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PS
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Permanent Link: http://ufdc.ufl.edu/UF00076787/00044
 Material Information
Title: PS
Series Title: <Mar. 1987-> TB
Uniform Title: PS (United States. Dept. of the Army)
Alternate title: Preventive maintenance monthly
Alternate Title: PS, the preventive maintenance monthly
Caption title: PS magazine
Abbreviated Title: PS (Wash. D. C.)
Physical Description: v. : ill. ; 18 cm.
Language: English
Creator: Eisner, Will
United States -- Dept. of the Army
Penny and Sol Davidson Collection
Publisher: Dept. of the Army
Supt. of Docs., U.S. G.P.O., distributor
Place of Publication: Lexington Ky
Washington D.C
Creation Date: 1969
Frequency: monthly
regular
 Subjects
Subjects / Keywords: Military supplies -- Maintenance and repair -- Periodicals   ( lcsh )
Genre: federal government publication   ( marcgt )
periodical   ( marcgt )
serial   ( sobekcm )
 Notes
Summary: The Preventive Maintenance Monthly is an official publication of the Army, providing information for all soldiers assigned to combat and combat duties. The magazine covers issues concerning maintenance, maintenance procedures and supply problems.
Summary: From 1951 until 1971, Will Eisner illustrated and co-wrote PS. Self-descriptive in purpose, featured a mix of illustrated articles, diagrams, and comics.
Additional Physical Form: Vols. for Dec. 1990-1991 distributed to depository libraries in microfiche.
General Note: No. 61-<74> are photocopies (positive) copyrighted by Will Eisner Productions.
General Note: Imprint varies: Lexington, Ky., <Aug. 1978>-19 ; Redstone Arsenal, AL, <Sept. 1997->
General Note: Not distributed to depository libraries in a physical form, Dec. 2000-
General Note: Description based on: Issue 309 (Aug. 1978); title from cover.
General Note: Sol Davidson Collection holds issues 36, 40, 44, 49, 85-6, 89, 108, 112, 142, 148-57, 164-71, 173-4, 177, 182-4, 186-96, 198-209.
 Record Information
Source Institution: University of Florida
Rights Management: All rights reserved by the source institution and holding location.
Resource Identifier: aleph - 001362266
oclc - 04507968
notis - AGM3698
lccn - 61040228
issn - 0475-2953
System ID: UF00076787:00044

Table of Contents
    Front Cover
        Front Cover
    Main
        Page 1
        Page 2-3
        Page 4-5
        Page 6
        Page 7
        Page 8
        Page 9
        Page 10
        Page 11
        Page 12-13
        Page 14
        Page 15
        Page 16
        Page 17
        Page 18
        Page 19
        Page 20-21
        Page 22
        Page 23
        Page 24-25
        Page 26
        Page 27
        Page 28
        Page 29
        Page 30
        Page 31
        Page 32-33
        Page 34
        Page 35
        Page 36
        Page 37
        Page 38-39
        Page 40
        Page 41
        Page 42
        Page 43
        Page 44-45
        Page 46
        Page 47
        Page 48-49
        Page 50
        Page 51
        Page 52
        Page 53
        Page 54-55
        Page 56-57
        Page 58
        Page 59
        Page 60
        Page 61
        Page 62
        Page 63
        Page 64
        Page 65
    Back Cover
        Page 66
Full Text












THIS 15 D 5. -
WHOSE BEEN MASHING' AN
OVER-TWISTIN' THEM COMMON
SET KNOBS... WOTCHA GOT
P. ,OWN THERE--
AN APE ?


.m


~de~


L ; :


0O


L L.
mf::







FWILER? SffW CW^

CLEAN'M or CW M
Except for you-the operator-just about lite nimol
important thing on a piece of equipment is the -
filter.
"How come?" you ask.
Look at it this way: That filter on our equip- -.
ment is there like a policeman to protect --
your equipment from its worst einemn -Dirl.
Dirt is the big, big equipment killer. It
gets inside, on and around everything ..-
and does its murderous work. A fe t
ounces inside a big engine like on a
tank or dozer, and that engine' AN
dead, shot.
Filters are put on your equipment
to stop this. You have air filters
to clean dirt from the air that
goes into things like engines
and electronic equipment.
You have fuel filters to keep
dirt, water and other goop
out of the delicate parts of en-
gines. And you have oil filters
to trap dirt that gets in engine
oils and hydraulic fluids.
Your job is to make sure tIhe l
filters do their job. It's real -ini-
ple: Clean them or change them- ju-t
like your tech manual says. The niore .
loose dirt there is around your area.
the more often you'll have to clean or
change.
Do it as often as need be to make i
sure your equipment stays ill Ihe fight.


sie PREVENTIVE MAINTENANCE MuNinrL
issue Ilo 19b 1969 Series
IN THIS ISSUE


S FIREPOWER 2-19
1 MIO.MIscSPHom.ar 214 M16A1 15-11


AIR MOBILITY 37-47
Helmet Tape 37 XM64 4
UH I 30-42 C147 44-47
ML-IOBjrometer 43 O-013 47


COMMUNICATIONS 48-54
Eulpmenl Contral IL 13A Piler Fn 52
Irque e4M9 IPII.Erlier l ,.p 52
H 189,GR Hedsel 50 AN GRC-106 53
1Xn.)n Seichlhhl 51 Cable RHil 53
AN PRC-2i 52 AN PPS5 54


Now*.,


-i;

ru





BE YOUR OWN INSPECTOR ON YOUR...


IN PS 195 WE
COVERED THE GENERAL
INSPECTION ON YOUR
MIO8 OR M109 HOWITZER.
NOW WE WILL CONTINUE WITH
CANNON CARE, FIRE CONTROL
ANP A LOT OF OTHER
6OOPIES...


M108-M10



HOWITZE
PARTAm MI


R


CANNON CARE
rirII:rI PIN If the tip of your firing
pin is mushroomed it possibly was
caused by snapping the firing mechan-
ism with the firing block in the open ~.
position. That way the tip of the pin hits
solid steel instead of open air of the
primer. So-o-o-o, cut it out already.


RIGHT. THAT WAY
WHEN A ROUND'S FIRED,
THE BACK PRESSURE
CAN'T TEAR UP THE GUN.


/WE GOTTA %\AKE
SURE THE BREECH
CLOSES CO.MPLETEL~.


The follower group of the firing
mechanism block can easily be damaged
or removed. If this happens, you can
fire the howitzer withoutt the breech
being completely closed.
The back pressure of a round fired
that vay could tear up the gun and
there's a good chance thar some crew-
men vould get hurt.
So this is the ,kas to make sure the
block is completely closed before you
fire-


P.,iii u ,h, l .' ,jl ,,ii n-. ,- ,r i u i11 oi.. b ic, ',h
1 1 b1 1 b1 l 1. 1 -... 1 1. tl u l .L > r l
d .. lI I I, P.k. ,. ,
, .. .:.,,, n, .. 1 l, ,rl i l .,p ,:,L II l ,,jI.
the breech is closed. MWO 9-2350-217-30/
13 (May 67) is your authority.


K>1 1 '..





The follower group works like an
interlock. It's good to have and should
be replaced if lost or broken.

GAS CHECK PAD Use only soap and
water to clean the pad and don't use
too much oil in the tube. Lubricant or
cleaning solvent will damage the pad.


... If you leave it unlatched, the handle
will be damaged when the breech closes.


BREECH RING -The lower interrupted
threads are getting cracked because
projectiles are being dropped on them
during hand loading Prevent this by us
ing the tray even when you hand load
II you absolutely have to load without
the tray, be careful not to hit the
k threads


I


-AN


(0 =O






TOO HOT TO CLEAN' If you can put
your hand on the tube without being
burned, the tube is cool enough to
clean with rifle bore cleaner




GI OR
CASTLE SOAP 4 GALS.
HOT
^ 4r |WATER


STILL

HOTV


NO BORE CLEANER? If you're fresh
out of rifle bore cleaner (RBC) you can
make up a soap solution from a pound
of soap (castile or GI) and 4 gallons of
water. For best results, both the water
and the tube should be hot. If this is
used the tube has to be rinsed, dried,
inspected and lubed, after each daily
cleaning.


FIRE CONTROL
LET'S TAKE -. LOOK
AT THE COMWFONENTS.'






M145 TELESCOPE

MOUNT


(NOTE: The nameplate will probably identify the
M145 as T208 but think nothing of it.)


M145 TELESCOPE MOUNT All 4
vials (Quadrant Crosslevel, Eleva-
tion Level, Pitch Level and Cross-
level) light up when toggle switch is
turned ON. Vials not broken, covers
turn easily, bubbles can be cen-
tered, red gradation lines easy to
read. All knobs and wheels present,
easy to turn. Glass over elevation
and correction counters not cracked
or dirty. Both pairs of correction
dials can turn through full range of
00 to 99. All electrical wiring in
good shape. (Replace any burned
out bulbs.) Linkage adjusted right,
not binding or sticking. Catch holds
M117 telescope securely. Name-
plate not painted over. Nitrogen
valve cap present


M117 FArllORAMi: TELESCOPE (T177)-
Rubber eyeshield not hardened, cut, or
torn. Eyepiece rotates within its arc of
movement without binding Nitrogen
valve cap in place. Reset knob moves
Ireely and stops by itself when the reset
counter reads 3200. Azimuth (deflec-
lion) counter latch and door in working
condition Azimuth knob turns Ireely
and moves azimuth counter numbers
without backlash or lost motion. Azi
mulh knob rotates the cap assembly as
the numbers in the azimuth (dellec-
tion) counter change Gunner's aid knob
turns easily and moves the numbers in
the gunner's aid counter windows
through lull range from 00 to 50 mils.
Bolh rheoslat knobs (bottom knob for
counter windows, top knob lor reticle)
work through their entire range.


Mill

PANORAMIC

TELESCOPE

(Ti77)


BOi;'EIHTIH I hl M] 7 You can ruin your MI 17 telescope
unless you know the right way to boresight it. To make the
adjustment push in the boresight adjusting shaft all the
way with a screwdriver and keep it pushed in as you turn
the shaft until you get a 3200-mil reading in your azimuth
counter Then you let it out .f


I






TH' -ROTTER
SSAYS WE'RE RIGHT E
ON TA"rGET.' GRCENT.
THOSE PA
CHORES Al
REALLY PA)
4A\. V OFF.,


M146 TELESCOPE I
KINGPIN
M146 TELESCOPE MOCril IData
plate may read T2061 Elevation
boresight knob and dellection la :
muth) knobs both turn without slip
ping. Kingpin metal lightly lutled,
Kingpin knob complete with chain
attached at both eni]s Eletcr cal
connector in good shape, wire not
frayed. Connector arm. vo:k.e a nd
elevation bracket not nirked or
burred.
AZIMUIH -


M118C ELBOW TELE
EITHER THE WHOLE M118C E
VEHICLE'S TILTED OR (M118 for
-OOMEONE'5 BEEN ber not bri
KNOCKIN' THEM lever mov
CANT BUBBLES OUTTA curely at
CORRECTION LEVEL limits of m
KNOBS
KNO correction
not broker
bubble car
I -BuBBLE I / mirror no
RELASE /3 Level vial
LEVER as light c
LE Reticle sel
icle into fi
ARM tions. (Not
RYESHIELD.-. i./ may read


/a '
l 1a .-


SCOPE

LBOW TELESCOPE -
the M108). Eyepiece rub-
ttle or torn. Arm release
es easily. Arm locks se-
any position within its
movement. The 2 red cant
(crosslevel) knobs turn,
n or cracked. Level vial
i be adjusted. Level vial
t cracked or clouded.
lamp brightens or dims
control knob is twisted.
election lever moves ret-
eld of view in both posi-
e: Data plate for M118C
T176E3.)






MI5 ELEVATION QUADRANT
M15 ELEVATION QUADRANT-Both QUADRANT SEAT
vials (crosslevel and elevation) light
up when control button is turned CORRECTION
ON, and bubbles can be centered DIALS
by moving elevation and crosslevel
knobs. Hand light works, wire not
frayed. Quadrant seat smooth,
without burrs or nicks. Numbers in
correction dials change smoothly
as correction knob is rotated. Glass
in all counter windows not cracked
or cloudy. Counter and vial lamp
covers complete with chains se- 'VIAls
cure at both ends.

M42 OFFSET PERISCOPE
COVER M42 OFFSET PERISCOPE (M109
only) Mounting screws tight,
window not cracked or dirty, quick
release pin and chain present and
S 1 secure. Cover can be moved easily
into open or closed position.


MI COLLIMATOR
Ml COLLIMATOR Level assem- a
bly in good shape, vial not scratch-
ed. Lamp and spare lamp both in THE W /HO'S
working condition. Optics clean, no BATTER S 1 EEEN KEEPIN'
moisture inside. (If there is mois- iEAD / IT HOOKED UP
ture, a nitrogen recharge is need- TO THE BATTERY
ed.) Sights, latches, straps and legs HEN NOT IN USEjz
OK. All adjustment and knobs easy
to move and lock securely in place.
Remote light control works. Switch
and rheostat do their job. Cable not
frayed. M9 battery power supply in
good shape. Batteries OK. (Con-
nect 'em up only when you plan to
use them.)
9






1MA SUNNMR'S QADRINT
GUNNER'S QUADRANT M1A1-Shoes smooth LEV
and without nicks or burrs. Figures easy to CENTERED?
read. (If necessary, gently clean the dirt out
of the numbers with a small brush.) Microm-
eter knob turns freely but without play. Level
bubble can be centered. Teeth not chipped or a
burred. Error, not more than 0.4 mil on end-
for-end test. (If the error is greater than this i
turn the quadrant in to support as soon as
possible.) M82 case in good shape with all W
cork gaskets and protective strips present TEETH
and secure. Latches not broken. OKAY?
M26 FUZE SETTER-All screws present and tight. Battery com-
partment in handle not corroded. The 2 BA-42 (C batteries) not
burned out. Bulb lights up when handle is in straight-up position and
handle button is pressed. (NOTE: It takes quite a bit of pressure to
seat the cap even when the threads are clean and unburred-which
they should be. Wing nut holds pointer securely at indicated number.
Both inner and outer scale numbers easy to read. (Clean 'em if they're
not.) Arrow showing direction of turn clear. Use only on left turn
fuzes.
M27 FUZE SETTER-No big cuts or nicks on WHO'S
inner bearing surface. Screwdriver end not BEEN USINGC-
broken or chipped. __ THIS TO LOOSEN


M63 FUZE SETTER-This is used with right turn fuzes M562, M563.
M564 and M565, and its stock number is FSN 1290-966-9318
(5800967). Until you get one you can use wrench M16. If you already
have one, check these points: Prongs on socket not troken off.
Recess on handle fits locking latch on socket securely without play.
Red night glass not cracked or broken. Night switch turns on light.


.r'~1, 01, I- T i ;. '-Paint OK in alternate white and red bands.
Bare metal lightly lubed. Pin not broken oft Spring strong enough
to hold post in position. Posts not bent (Roll 'em on a flat surface
or use a level to make sure they're straight.)






FOR YOUR MECHANIC


GREA'5. BUT
'.ou MAKE THI5
TEST ONL, IF
THE POWER PLANT
15 WEAK... IT'LL
"TELL 1Ou WHETHER
I' THINK THE EN61NE OR
I ,'UlG. TA THE TRANSMISSION
1. i AE 15 TO BLAME!
TEST!

After checking engine and
transmission oil levels, bring
engine up to normal operating
temperature (170 F).
t


With brakes locked and transmission
in high range, run engine at full throttle
for 15 seconds. Never run engine over
15 seconds or you'll overheat
the transmission oil.


full throttle is below ) If the engine speed is
1,800 RPM, the engine over 2,000 RPM there's clutch
is not up to par. Get slippage in the transmission. Check
your direct support to the shift control linkage adjust-
check it out. ment. If this is correct, have your
direct support check the engine.

After checking engine and transmission oil levels, bring
engine up to normal operating temperature.


With brakes locked, shift into You check reverse range the
low range and run engine at 43 some way.
full throttle. If the transmission
lip' ,h, ii h lnl, ,. udlii.ITt nl |ii,,,


MI 1,-


" i IIIM .. -
(b 2 1'.- i.P t1 Il m O


>1,






NO-LOAD TEST-With brakes set at maxi-
mum and shift in neutral, run engine until
normal operating temperature is reached.
Gradually press on the accelerator until its
limit is reached.

Engine speed will generally go over 2,450 RPM
for a second and then stabilize at 2,450. If the
governor repeatedly cuts in and out or surges at
this speed, get your support maintenance to make
adjustments. If the governor won't work, speed
could go out of control. Be prepared to shut down
so speed will not go over 2,450 RPM for more
than 2-3 seconds.


CAB RACE RING-Too much lube on the race
ring can cause vehicle deadline. Open the
inspection door and make sure it really needs
lube before you pull a pipe plug and tem-
porarily replace it with a grease tilting.


TH'GOVERNOR SHUT
DOESN'T WORK! DOWN il
iWS 5HUT
0OWN!!


-. .',4
^-^^^^


1^-


TRAVERSE MECHANISM-Grease and dirt
tend to pile up near the traverse mechanism
pinion gears. Open the access plates and
clean as needed.


FUEL -ArS CRACKED?-Your support can
repair 'em now the way it shows on pages
63-65 of TM 9-2350-217-34/1 (Jan 65). They'll
have the right repair kit-FSN 2910-078-
4065, on page 25 of the -25P/1 TM.

-ilh'wi.iii TUBES (M109 vehicles with
Serial No. 1123 and up)-With the new el-
evating cylinder the hydraulic tubes tend to
break. An MWO for a damper bracket is in THEY'F
the works but for now loosen all 4 tube NOT
clamps. After letting the tubes get in a relax- PASSEN'
ed position, retighten the clamps and wind STRAP'
several turns of green tape around the tubes
and the cylinder. These tubes are not sub-
way straps. No. 1 cannoneer, 'nuff said?


HYDPALUIi: F'OWEP PACK The retaining
clamp FSN 5340-0816707 can loosen which
will allow too much vibration which may rup-
ture the lines. Getting the clamp too tight
can be lust as bad. So ask your mechanic to
tighten the adjusting nut with a .002 feeler
gage under it so tight he can not pull the
feeler gage loose. Then he will back off
enough to get the gage out after which he
will retighten 1-'i to 1-'2 turns.


SLINGS AND THINGS
POWER PLANT SLING Get the right
one FSN 4910-084-0790 (10913779)
-and make sure MWO 9-2350-217-
20/5 (Nov 65) has been applied. The
MWO offsets the cross bars so they're
shorter on the left side.
(On some of the slings the hooks are
too large for the transmission lifting
brackets -so widen the holes, at the
bottom, not at the top, as this would
weaken the bracket.)


VEHICLE WASHING
wash your vehicle
careful not to ge
exhaust system
severe engine
steam or water
cab compartmen
haust deflector o
TB ORD 548 (J
wash the interi
With steam or w
you could damage
struments. Be
finder and perish
wash the outside
HOT WEATHER--In real hot weather
your vehicle needs more frequent and PARK IN
more careful inspection. Check your in- THE SHAPDE
struments and gages more frequently. WHEN Y'CA4N
Lube more often.


(G Clean but do not
e before inspection. Be
t any water inside the
because it will cause
damage. Never use a
hose in the engine or
t or around seals, ex-
r other openings.
an 54) tells you not to
or of hulls or turrets
water under pressure -
e your fire control in-
careful of the range
ope openings when you
e.


low, _

SB "RE>


I_-






COOLING SYSTEM If you have an M108 with serial 3 to 453 or M109 serial 5 to
454 make sure MWO 9-2350-217-20/4 (Aug 65) has been applied. It gives you a
better pressure relief valve for your coolant surge tank.
When adding water or anti-freeze, first make sure the crossover tube drain cock
is open. Fill the radiator, and when liquid flows in a steady stream from the drain
cock, close the cock. Keep on filling until the radiator is full. Run engine for 5 min-
utes with filler cap closed. Check level again and add coolant if you need it. On some
first-year vehicles there are 2 drain cocks, one on the crossover tube and one on the
surge tank.


FLOTATION EiOUIPMENT If your vehicle has it, check
the way it says on pages 107-111 of your -10 TM.


PAINTING Clean and paint bare or
worn spots on painted surfaces if there
is any danger of rusting or a reflection
from metal that could give your position
away.
LINFRAPED OPERATION Your M109
has lights, switches, and everything
else needed for IR operation except
there is no IR periscope. Keep this
equipment in good shape because IR
capability may be added later, if and as
needed.

DECALS, STENCILS-The word on all
decals, stencils and instruction plates:
If you can't read it, replace it.

ELECTRICAL COMPONENTS Check all
exposed electrical cables, boxes, ter-
minals and controls. Tighten things that
shouldn't be loose. Tape cables that are
frayed or have broken insulation.

P.LIPLI, TIi:rJ. -AII needed pubs up
H to date including changes?
- d. Lae i .. A I I JI I


SEALING COMPOUND-You
only get enough with your
kit for 2 flotation opera-
tions. If you need more ask
for Sealer fording, FSN
8030-056-0196, in your
-25P/1 TM.


SLA'ING IDEAL Reverse polarity dur-
ing slaving can ruin the diodes in your
regulator and rectifier. Decal FSN 7690-
912-3504 (P/N 10944793) tells how to
do it right. This decal should be stuck
on the wall near the slave receptacle,
which will be in the driver's compart-
ment (early vehicles) or the battery
compartment (late vehicle).


UNSAFE CONDITIONS--Check entire
vehicle for any unsafe condition which
could hurt a member of the crew. Safety
inspection includes brakes, steering and
shifting linkage and fire extinguishers.
Anything cracked with a sharp edge that
a crewman could fall against?


r~TI~


I





YOUR M16'S MAXI-SKIRT...

ALL THE WAY
WITH NEGLIG

SI TO LC' P U
THAT RIFLE
SUBSTITUTE FOR
REGULAR PM.



No, that )ou',e got a plastic coverall bag (FSN 1005-809-2190i to protect
. our M16AI ritle against dust. sand. mud, watrr and such, here's how to use it
in good health-yours and )our weapon's.
First, make sure your rifle's cleaned and lubed before you bag it. This cover's
an aid to PM, but it'll never replace the cleaning and lubing you'll always have
to do regularly. In fact, with a rubber band closing--not to mention rips and
tears- the bag's not guaranteed watertight, so-oo-o ...
Second, if you're gonna keep it bagged more than 24 hours, be sure you eye-
ball the weapon every day for signs of corrosion from any moisture or condensa-
tion that might form in the bag.












IN A FIREFIGHI
Comes a sudden opportunity to bag an enemy, here're 2 ways you can work it:
f-1


Natch, after "emergency" use, you'll need a new bag.
15


I Wilk Ihe bagr oR ,iih ri'r steady
prik Thr. bag II tome apart at ihu c oj*
I uk


i II abs.IuIiyr rirPEn'.ry ,au con Lirr riqhr
ttiruqh Th.!bog a ou cra opuiolt Ihi
sda.Irir IP,~r arid Trigger ea ..,rIh Ih,
boq on BUT rurtrarbir hi l, 1rcrd tat
will bi frujpprd ~n Ih- buil ound could (ouu-
i mallunror'.u aOftr r h' rfl~ round So 9iA
ir or a. quitk ,o VoUr 0,1





SOME STRAIGHT TALK
-, PULL UP A COUPLE STUMPS,
MEN, AND LET'S TACKLE THIS
SERIOUS PROBLEM.., WHAT
CAUSES IT AND WHAT YOU
CAN DO ABOUT IT_..


ON BLOWN-UP M16A1'S: 4


YOU'RE

'"T CURE!


s1' Y'know, it could be worth a life or limb or rifle to know all the angles on this
-. -whether you're where the action is or not.
First, however, let's get one thing clear: It's highly unlikely that it'll be the
rifle's or the ammo's fault if one blows up. It's usually the rifleman's--some-
thing you do or don't do. And you are the only guy who can prevent it. OK?
Now, why they blow up. Simple: If the bore gets clogged, too much pressure
builds up in the chamber and/or bore when you pull the trigger... and wham!
What-all could clog it up? You name it. It doesn't take much to clog a rifle
barrel, that's for sure.





















w -- ^ ---_- -* ----
Things like...
.. Swabs, cleaning rod sections, sticks-dopey stuff like that which you
could detect with ordinary heads-up inspection.
... Oil, grease, mud, corrosion-things you could prevent or get rid of by
doing a careful cleaning and lubing job. (Cleaning-run the brush and patch all
the way through the flash suppressor before pulling it back. Lubing the bore-
just a very, very thin film of LSA, remember?)
... Water in any form-rain, or water from fording or falling in a paddy. Ho-
Ho-Ho! HIO's usually your biggest problem!

HEH WHY WATER'S SO DANGEROUS
HEH i Water's the sneakiest villain for a number of reasons.
For one, there're several ways it can get in your bore
S. like when you slip while crossing a stream, or you
get caught in a heavy shower. For two, even if you know
7 it's in there ... like after fording or operating in a mon-
soon ... it's mighty hard to get out-especially if you've
( Agot a round chambered.
What happens is that the chambered cartridge forms
SIa seal that won't let the water drain out properly. If the
cartridge is in there long enough-a couple of hours, say
--corrosion starts to form, which makes it even worse.
B WATER iW
...-.......... CAN FORM
C A SEAL. A,


17 ,






St LI J T \ Even without a round chambered,
ME... JUST
POINTING THE water in the bore can give you the
MuZZLE DOWN', sweats. The small diameter of the bore
ISN'T THE keeps the moisture from draining
WHOLE ANSWER.'., .. easily. So, if you chamber a round while
S there's still too much water in there
that same-type of seal forms and .
bloody, when you fire!
Yessir, getting that water out of
there before firing is more important
than mail call.
S Only trouble is, just pointing the
muzzle down won't hack it. You have
d '' to break that seal by pulling back on
the charging handle to pull the round
-- r p l 'fJl part-way out of the chamber and then
S--shake the water out ...

SMART OPERATING PROCEDURE
So, OK, here're a couple of situation-type solutions for when you get water in
the bore from any cause--rain, fording, whatever.

When Round's Not Chambered like when you're heading out first thing in the
morning and your CO says you don't need to keep the chamber loaded.

1. Seat your loaded magazine, with the dust cover dosed. 2. Drain the bore often by
pointing the muzzle down
m I. and shaking the water out.


3. When you're ready to fire, charge your
rifle. It'll take a dean round into a
dean chamber... and you can fire with-
out sticking.






When Round Is Chambered ... like you're in combat-just forded a stream or came out
of a heavy rain ... and Charlie's maybe everywhere.
Be mighty sure you do these before pulling that trigger:

1. Point the muzzle down. 2. Pull the charging handle 3. Press the forward assis
back a ways so that air to make sure the round'
can break that "seal." seated in the chamber
Then shake the water out. and the bolt is locked.

% \ I


4. Fire!
4.1 i Ar, WAIT! REMOVE CAP FIRST!
One big thing, though: If you're using one of those plastic protective caps
(FSN 5340-880-7666) on your muzzle, be sure you take it off before you start
draining the bore.
Incidentally, this cap'll help keep water from entering the mouth of the bore,
but it won't stop seepage from the chamber end when your rifle gets dunked.


WATCH YOUR BUTT, TOO!


While we're gabbing about water.
let's hammer home the importance of
keeping it out of the lower receiver, too. i
This may not have anything directly ro
do with blowing up your shooter, but it
could keep it from firing-which is the (
next worst thing. CLEAR THE
Right, every time you clean your HOLE WITH
M16-and every time you drain water A PIPE
from the bore-take an extra second CLEANER
to make sure the drain hole in the butt
stock capscrew is open... and drain the it'll foul up the working parts ... cause
butt, too. corrosion and dampen your ammo.
A pipe cleaner's about the handiest So, remember, huh?
thing for keeping this hole clear. All of this boils down to one thing,
If water stays in the lower receiver, then: Your Prevention is the cure.
19




















A SMART OPERATOR LOOK AT THAT
GETS EXTRA MILEAGE SAG..DOES IT
FROM HIS TRACK RUBBER D0 ANY HARM??
BY POING LIKE THE
EXPERT S! ,Keep the track at the exact
SI Wtension called for by your ve-
hicle TM. Too tight is not
bright, and there is no excuse
for too loose. The experts keep
the tension exact, and their
track rubber wears longer.



TRACKS WEAR MORE ON TH '
INNERSIDE!

Cure: Switch the tracks, left
LT on right and right on left. That
way you'll even up the wear.
(Course, with some tracks there
is a left and a right type of
track which can't be switched.
Also, you don't want to wind
up with the V of chevron
grouser track pointing back-
ward.) You'll find the inner
road wheels wear faster than
the outer, so switch 'em when
necessary to equalize the wear.


S.-"- WITH YOUR TRACKS


STrack in storage loses a lot of its
snap back," bur if iou break it in right
much of the bounce comes back.

WHAT ARE
THE BEST SPEEDS
FOR BREAKING IN { HERE.!
NEW TRACK
BLOCKS?


~ --~ 2f"-- -
Break in new track pads on a paved
road or a smooth secondary road and
stop after each 15-mile phase and tight-
en up end connectors if they need it.
HDN WRIGHT,
S WRIGHTT!
IT'LL OND Y
ca~ TAKE A
MINUTE.
This expert break-in will add hun-
dreds of miles of life to the track rubber.
On tuther hand, if you run the rubber
fast without a break-in you lose those
hundreds of miles.


Dri\ing-aftir )ou break in sour
track like an experr, operate it like an
expert no piyot turns in rocky, rough
terrain and no sustained high-speed
operation. /
T- EASY
MAN.
161


Avoid going over 20 MPH for long
periods when the outside temperature is
above 85 F.
WHENEVER YOU CAN,-
STOP A. WHILE SO Y'R
TRACKS CAN COOL OFF!



--h-
Turn-in-The expert always takes
the good track off a tank before he turns
it in for rebuild. At the depot new track
is put on as part of the overhaul job, so
any kind ofjunky track is OK when you
turn in a tracked vehicle.
Follow these tips and you'll get more
good miles out of your track, and your
vehicle will behave better too.
See TM 9-2630-200-14 (Oct 62) and
Ch 7 (Dec 67) for poop on maintenance
and wear limits for all kinds of track
and track components.


~
8 ~L~- ~IE
_uFi ~-L~- ,sJ~c~






M88 VTR SOLENOID QUIZ

S P'DRAULIC'S SHOT-
SCOULP BE MY
GOLDAN-G SOLENOID!

HEIE'S THE
QUESTION :. I %

SWhat happens if the engine governor electric
S,4solenoid gets rusted?
Sl e The governor can't hold down the engine
speed as much as it should during winching so
the hydraulic system operates under higher pres-
sure than it was made for.
Result?
Torn up hydraulic pumps and broken hydrau-
lic lines.
But howcum the solenoid gets rusted?
Water condenses inside the housing or seeps











First take the solenoid off and dry it.
Next you gently get the rust off with a little fine sandpaper.
When you put the solenoid back, use the gasket but also seal around the
opening with a couple dabs of gasket shellac. FSN 8040-664-4134 gets you a
pint can.
You also rub a little insulating compound on the rubber of the electrical
connection. FSN 5970-159-1598 is good for an 8-oz tube.
This works fine for years but after several cleaning the solenoid gets too worn
down to do its job. Then you put on a new one. Governor solenoid repair kit
FSN 2990-893-5931 includes the solenoid and a new solenoid gasket.
When you put on a new solenoid you also adjust the governor the way it says
on page 149 of TM 9-2320-222-20 (Aug 66).
22






HOWITZER HAPPENING GETS NEW NAME...

When you see Item 13 in TM 9-1025-200-ESC/1 (Mar 68)
does it make you blink?

telescope.
So what do you do if you have an M12A7C telescope and
what is an M12A7Q anyhow?
The M12A7Q telescope is an MI2A7C, MI2A7F or
M12A7H telescope after MWO 9-1240-236-50/1 (Aug 67) ...AND
has been applied. This MWO, which by now should have RETICE
been done to all M 12A7-series telescopes, provides a different
reticle.
Regardless of what type of MI 2A7 telescope you have, give
it an ESC rating on DA Form 2404. The ESC rating standards
are the same for all versions of the Ml 2A7.
If your telescope has not been converted yet, have this done .
and ill out the Equipment Modification Record (DA Form
2408-5). Pages 4-24 to 4-28 of TM 38-750 (May 67) tell you
how.


BRUSH-OFF FOR ARCING

Burned up because you have elec- know the kind you get when you
trical brush contact burn-outs in the have aicing between the brush con-
power cupola for your M114A1 cor- tacts and contact ring.
mand and reconnaissance carrier? You Burn no more by getting rid of dirt,
oil and other unwanted junk from
Y'SURE around the brushes and ring. Please-
STHEM no steam or water.
HARE Instead, get yourself a piece of soft
ARE C dry cloth. A small arms cleaning swab
Swill do. Using a handy finger, hold the
S/ cloth against the contact ring-on
either side of the contact brush at the
Srear of the cupola. Then, with all elec-
trical switches OFF, manually traverse
the cupola as you hold the cloth against
the ring. Traverse the cupola at least
BRUSH CONTACTS one 360-degree turn to make sure you
don't miss anything.
23














A CLOGGED BREATHER IS
LEAKY SEALS AND COSTLY


CHECK YOUR BREATHER VALVES--
LIKE AROUND THE STEERING GEAR,
DIFFERENTIAL, TRANSFER ANPAXLE
HOUSING-- A PIRT- PLUGGED BREATHER
r CAN MEAN TROUBLE,


If the dirty valve is on the transfer
or steering gear housing, you may
find the shaft and control valve oil
seals bursting.
If it's the grimy one on the differen-
tial or axle housing, you'd better inspect
the brake drum for lubricant blown out
through the seals.
You may even suffer an outbreak of
failures if enough pressure has built up
from many paint-blocked breathers on
new and rebuilt trucks.


A ONE-WAY TICKET TO ALL SORTS OF TB ORD 625 (Jan 56) gives you
REPAIRS good pointers on cleaning ventilating
valves. --
GET TO valves. '.KE IT TELLS
KNOW US ...VWHERE \ WHEN TO INSPECT.
WE'RE AT...ANP FOR s
PM'S SAKES...
KEEP US C : -..
BREATHIN'!
-Y 'MEAN PAILY- RIGHT AFTER
A SNOWY OR MUPPY MISSION

Along with the TB, be sure you read
the TM of your own vehicle and replace
a valve according to the TM word.
SCheck your -20P for the breather you
need.
FFFF Keep in mind to clean the area
GAsF around the valve too. Otherwise, any
dirt there will'drop into the case when
you're removing the vent.- MA
You clean all ventilating valves by
soaking them in a drycleaning solvent
or in mineral spirits paint thinner.
After that, brush them with a stiff
brush.
The whole idea is to make certain
you've cleared the passages, and that
the valves move freely. .;'
If you have to, use a soft metal rod
to remove obstructions.
SThen, after you've dried the valves
I with compressed air (10 PSI or less),
you finish the job by lubricating them
sparingly with clean engine oil.
You'll see new life in your truck
after this small PM chore.
25


V,7-






G838-SIIES I/4-TON TRUCK...

BONE YARD BUMPERS
Dear Editor,
Rubber hood bumpers on our M 15A I /4-ton trucks don't stay too well in those square
holes in the top windshield frame.
Adding trouble to trouble, those bumpers are a non-stock item. And there're none to
be had at the cannibalization point, because everyone else has the same trouble.
But you can get replacements at the bone yard, anyway, if you know where to look.
Those brake and clutch pedal bumpers (FSN 5340-678-1431) in the M151A I seem to be
the same thing and fit just dandy.
SSG Chester E. Maupin
Indiana ARNG
/ HEY, HOW ABOUT
THESE BRAKE OR CLUTCH
PEPAL BUmPERS., (LU(H
BUMPER
MAKES
,-- GOOD






... WINDSHIllD
3P 7 BUMPER
OLJ WAZNNA Bu V
RUBBER HEEL HORSE
5HOE ...GOT PENIL-
ERASER OR... _/ (

(Ed Note-That's usin' the ol' bean-and it's in the spirit of that vehicle's
maintenance policy in TB 750-98-23 (Mar 68), Appendix B, and in TM 9-2320-
218-34 (Jul 68). One suggestion, though-dab some epoxy cement on those
hood bumpers before you install 'em and they'll stay better. Get adhesive,
paste-type, FSN 8040-847-6387, MIL-A-8623, listed in Fed Cat C8000-IL-A,
(Jan 68).


ADAPTER FOR M151
You'll have no more trouble getting to those U-joints of your M151 1/4-ton
truck if you use the 6-in grease gun coupling adapter, FSN 4930-204-2550, which
is found in your lubricating kit. This kit, FSN 4930-357-6301, is a part of your
No. 1 and No. 2 Common Tool Kits.












Yes, you can tote the M3A3 smoke
generator on the M151 or the M38 1/4-
ton trucks-or on the M100 or M416,
1/4-ton trailers. But first support has
to work over the generator's M2 mount
like it says in MWO 3-1040-202-45/1
(Apr 68).
With the MWO fix the generator can
be easily swapped from one truck or
trailer to the other and you can load and
unload the generator faster, too. And,
M33 by the way, the stock number for the
M3A3 in the MWO's para 5 is really
FSN 1040-587-3618.
The M3 mount for the oil drum needs
MWO 3-1040-255-45/2 (Apr 68), so
you can lug the oil in either one of the
trailers.


-M561 AND M792 ESC's





Better check with your pubs people to make sure they've ordered Equipment
Serviceability Criteria pubs for your M561 1 1/4-ton cargo truck or your M792
1 1/4-ton ambulance truck. There're write-in's on DA Form 12-38.


M131A5C TURN SIGNAL

Order under FSN 6220-903-6647 if you need a door-and-lens assembly for
that new type turn signal light on your M131A5C 5,000-gal fuel servicing tank
semi-trailer.

























This is selected lisr of reent pubs
of interest to orgonizational mointe-
nonce personnel. The list is compiled
from recent AG Ditribulion Centers
Buletlin. For complete details ee DA
Pom 310.4 (May 68). and Ch I (Jul 68),
TM', TB.s etc.; DA Por 3106 (Jul 68),
and Ch 1 (Ot 68). SC' and SM's; DA
Pom 310.7 (Od 68), MWO',.

TECHNICAL MANUALS
TM 3-1040-254-23P, Oct, M106 Port
450 CFM Disperser Riot Controt Agent.
TM 3-1040-257-12, Aug. M9E1-7 Port
Flame Thrower.
TM 3-1325-237-10, Sep. XM925 Bomb
Fuze and Bursler System.
TM 3-4240-237-15 C1. Oct, MS Pro.
tective Oulfit.
TM 5-1940-200-20P, Oct, Bridging
Boots.
TM 5-2805-203-24P, Oct. 10-20 HP
M.S. Goa Eng.
TM 5-2805-257-14, Sep, 3 HP Gas
Eng.
TM 5-3610-229-25P, Oct, Web Offset
Printing Press.
TM 5-3655-217-15, Oct, 150 Gal Skid
Mid Argon-Nitrogen-Oxygen Liquid
Storage Tank.
TM 5-3895-322-20P, Oct, Gradation
Control Unit Aggregate Trailer Mid
100-150 TPH Mdl KA-60.
TM 5-3910-209-20P, Oct, 100-150
TPH Aspholt Bucket Type Comp of
Mixing Plant Elervtor.
TM 5-4120-226-20P, Sep..18,000 BTU
Floor Mounting Air Conditioners.
TM 5-4120-259-25P, Sep. 36.000 BTU
Floor Mounting Air Conditioner-.
TM 5-4120-299-25P, Sep, 6,000 BTU
Air Conditioner...
TM 5-4310-222-20P, Oct, 125 CFM
Air Compressors.
TM 5-4310-225-15, Sep. 55 CFM
Compressors.


TM 9-1005-211-12, Sep, M1911AI
.45 Col Automatic Pistol.
TM 9-1005-224-25 C2, Nov, M60
7.62MM Machine Gun and M122
Mount.
TM 9-1005-231-25, Sep, M8S .50 Col
Machine Gun.
TM 9-1015-215-12 C3, Oct, M30 4.2
Inch Mortar on M24A1 Mount.
TM 9-1015-223-24P, Sep, M67
90-MM Recoillest Rifle.
TM 9-1055-201-12, Oct. M20A1
M2OAIBI 3.5 Inch Rocket Louncher.
TM 9-1430-250-15P/5/1, Oct.
Nike-Herc.
TM 9-1730B C1, Nov, M42, M42Al.
M41, M41A.1 M41A2, M8AI, MBA2,
M52, M52A1, M44AI, M75.
TM 9-2320-209-20 C3, Aug. 2V2 Ton
Trucks.
TM 10-3610-228-25P, Sep. 220 V 60
Cyc 3 Ph Web Offtst Printing Press.
TM 10-3930-252-20P, Oct. Elec Fork-
lilt Truck 4000 Lbs Cap.
TM 10-3930-408-20P, Sep. Wheeled
Warehouse Tractor Gas Pneumatic Tire,
4000 Lb Drawbar Pull.
TM 10-7310-217-14, Ocl, Heavy Duty
Oil Burning Range.
TM 10.7310-218-14, Oct, Heavy Duty
4 Burner Gas Range.
TM 10-7310-219-14. Oct. Gas Baking
and Roasting Oven.
TM 10-7310-220-14, Oct, Goa Deep
Fat Fryer.
TM 10-7310-222-14, Sep, Elec Deep
Fot Fryer.
TM 10-7320-205-14, Oct. Elec Food
Mixing Machine.
TM 11-5820-642-25P, Oct. R-903
(XE-3) /PRD Radio Receiver.
TM 11-5820-686-25P, Oct, R-1420/
URR Radio Receiver.
TM 11-6625-586-12, Oct, AN/URM-
103 Sig Gen.
TM 55-2330-207-10-2, No,.
M129AIC and M129A2C Semitrailers.


LUBRICATION ORDERS
LO 5-3655-207-12-1 and -2, Nov,
Acetylene Semitraller Mid Gen and
Charging Plant.
LO 5-3655-209-12-1 and -2, Nov,
Generating and Charging Plant Oxy-
gen and Nitrogen Semi-Trailer Mid.
LO 5-3805-201-15-1, Nov, Earth Mov.
ing Equip Leaders.
LO 5-3820-238-12-1, Oct, Go, Pow.
ored Percussion Well Drilling Machine.
LO 9-1450-585-12, Aug. XM730
Chaparral GME Carrier.
LO 9-2320-209-12, Oct. 21 Ton
Trucks.
LO 55-1905-217-12.1 and -2 and -3,
Oct, LCM-I500 Thru LCM-8519 74 F
Lg D&l Pwr Dnm Steel Mechanized
Landing Craft.

MISCELLANEOUS
AR 750-35, Dec, Alteration ol
Moterlel.
MWO 9-2320-211-30-12, Nov,
M61A2, M63A2, M54A2, M55A2,
M52A2. M543A2, M51A2 5-Ton
Trucks.
MWO 9-2320-244-20/1, Oct, M715
and M725 1 A-Ton Truck.
MWO 9-2350-217-20/13, Nov, M108
and M109 Howitzes.
SB 11-613, Oct, MK-693A Maint Kit.
SB 11-616, Oct. Control of irstn Gen
Night Vision Equip.
SC 3433-95-CL-A02, Oct, Ctting and
Welding Torch Outfit.
SC 3439-95.CL-A01, Oct. AC 115 V
Resistance Heating Soldering and
Brazing Ouft.
SC 4220-97-CL-A01, Oct. Loru I Per-
son 30 Ft Depth Diving Equip Set.
SC 5180-95.CL-A47, Sep, Chaparral
Guided Mis Org Maint Tool Kit.
SC 5180-99-CL-AO6, Nov, Elec Repair-
man'l Army Acft Tool Kit.
TB 9-1425-324-25, Oct, Sergeant.


THE DATE'S IMPORTANT!


Here's news for you M728 combat engineer vehicle cannoneers: There's a

new obturator pad (FSN 1025-072-6655 ... P/N 8769416) in supply for your

165-MM weapon. It's got a date-1-1968, for example-stamped on the inner

ring. Use it every time.

Here's the kicker: If the obturator pad you've got doesn't have the month

and year stamped on its ring, you must replace it with one of these new ones.

Whatever you do-don't fire off with the old-type pad in there!

28

















A SORROWFUL STORY!
SLICED FROM THE SEETHING(
SYSTEM OF SUPPLY...OR


IT BEGINS
AT A BATTALION
H.Q. WHICH HAS
JUST BEEN
ALERTED D
TO MOVE
UP AND
SUPPORT AN
ATTACK.




A READINESS
BRIEFING IS UNDER
WAY..THE LOGISTICS
READINESS OFFICER
SPEAKS...


A TRUE, TUlGID TALE
OF TROUBLED,
TIRED, TORTURED
GUN TUBES.



















THEY'VE ALL BEEN REMOVE J f(
ANP EVACUATE TO GENERAL 0
SUPPORT FOR REPAIR CALL 6 ,
OR REPLACEMENT! TELL 'EM TO ISH
THAT JOB
S THROUGH...
S WE'RE HURTIN.
^m.^^^


HELLO, HARRY,
ABOUT OUR HOWITZER
GUN TUBES... YEAH...
YEAH... YOU WOTF
... OH, REALLY??







...BUT WE DON'T HAVE A
TEST GAGE THAT WILL
REVEAL THE CONDITION OF
METAL FATIGUE WITHIN THE
TUBES... WE HAFTA CUT
"SLICES" OUTTA 'EM FOR
ANALYSIS WHICH WILL J
DESTROY THE TUBES... N


SO CONPEMN 'EM
AND DO IT i


...TOO HAZARDOUS, SIR...
THE SAFETY OF YOUR GUN
CREWS AND ANY BYSTANDER
WOULD BE IN DANGER WHEN
THEY'RE FIRED- WE DON'T
WWANT THAT... DO WE, s
I SIR! MA





Jat forms for your qun tube was planned
lt* For itfo that's sure in emanoL--
Correctly applied,
It COULD save your hiiCe...
h g By teUllin the facts as they stand!




/ A 4EP E-4
/ DA 40 8-A: 4


I)ETACHERp
,-il.
v'HREVER
SHEYG60 f


IF YOU WANT TO DISPLAY THIS CENTERPIECE ON YOUR BULLETIN BOARD, OPEN STAPLES, LIFT IT OUT AND PIN IT UP.


I II









m~g~






IES ..THE 2408-4 I1 THE
TUIBEIP RECORD OF FIRING
... IT'S LIKE YOUR SERVICE
I RECORD IS TO YOU!!


UNLESS SUPPORT.. OR THE
NEXT USER, KNOWS IT5 HISTORY
-THAT GUN COULD BE AS
DANEROUS TO THE USER AS
IT IS TO THE
ENEMY!







SO, YOU SHOULD BE
SURE TOTALS ARE
TRANSCRIBED TO
THE NEW FORM
WHEN THE OLD
ONE GOES TO
THE NMP!? j


PSSsTI YES... SURE...
GREAT.!






FLYING HELMET STRIPES


HERE'S HOW TO APPLY IT:


Clean your helmet with soap Then use another damp cloth T w
and a dampc doth to wipe off the soap. Then wpe dy.

Cut 2 strips 5 inches long, 1 strip 8-3/4 inches long, and 2 strips 7-1/2
inches long.
Remove the paper backing from the tape and press the tape on to the helmet.
Smooth it out and trim the extra tape from the center of the visor housing track
and housing edges.P: 1 PI
IN COLD CLIMATES... DO IT TP: 1 PIECE
FRONT: 2 PIECES INSIDE A BUILDING WHERE IT'S 2"x8%
2" x71/2" AT LEAST -f60*F. OR IT
WON'T HOLD, BACK
2 PIECES






37






























It took some doin' but the battle
against foreign object damage is being
won.
First, there was the sand and dust
separator that corralled dirt in the air
and kept it from causing erosion of the
engine compressor blades.
Now, along comes a screen that goes
outside of the separator on the UH-1B,
C, D, H and AH-1G models to keep out
nuts, bolts, cotter pins, safety wire, dzus
fasteners and other large objects.


1560-167-8113 is the screen you want. 3 a trapping sand and dirt to eliminate ero-
And Ch 1 (16 Aug 68) to MWO 55- y sion of the engine compressor blades.
1520-210-30/17 and Ch 5 (4 Sep 68) Blade erosion reduces efficiency-robs
to MWO 55-1520-211-30/35 on instal- an engine of power.
lation of the particle separator puts it .g The engine screen takes over where
on most models. An MWO to put the L /the screen leaves off to get rid of large
screen on the Huey(obra is in the mill. objects.
You get a maximum power loss of 1 (H But what about hardware even
per cent, but it makes your engine safe tools-left behind after maintenance
from FOD about 99 per cent of the time. is pulled with the separator and screen
It's that 1 per cent possibility you off? That's the rub.
crewchiefs and mechanics want to keep When you pull line maintenance try
in mind. these PM tips to help prevent engine
FOD.
MAKE SURE
YOUR BIRP
HAS A KEEP SEPARATOR CLEAN
L SCREEN.
Remember that during the dry season
dirt in the separator is going to build
up fast. Before you know it you've got
several inches collected in the box
assemblies.


The PMI checksheets call for clean-
..ing the separator. But if the dust is
really flying where you are it's a right-
a smart idea to clean it more often.
e job of Like-empty the dirt out of the


boxes on the Daily.







BE SURE
SEPARATOR
IS KEPT
CLEAN






For a thorough cleaning job wash
mud from the plastic boxes and foam
insert by using clean cold water. Shake
off the excess water. Let the boxes air-
dry or wipe them with a clean cloth.
Clean out any sand or water from
the well of the lower air filter. Wipe
the well with a clean cloth. If the filters
are in place be sure you don't puncture
the screen.
Take out the filters and shake out
any loose dirt. If they're really dirty,
wash them in clean water and scrub
with a soft-bristle brush. Shake off the
excess water. Let 'em air-dry or use a
cloth for drying.
That's all it takes to keep your
separator sparkling clean, man.

COUNT YOUR TOOLS
When you mount your bird leave the
tool box on the ground-or in the

WHERE'S
MY
WRENCH?






troop compartment in bad weather. It's
hard to' keep track of the tools you use
.if you lug the tool box up to the engine


deck or to the roof and work directly
out of it.
Take out only the tools you need and
count 'em. Then go to work on your
baby.

SEARCH OUT DROPPED, LOOSE HARDWARE
While you're making with the
wrenches keep track of the hardware -
nut, bolts, washers, cotter pins, safety
wire.


/7/-,-//

If you drop a part in the engine inlet
area, like under the separator which
doesn't have the new screen, dig-dig
-dig, man! Go in there and find it or
the stage will be set for engine FOD.
Loose cowling and inspection plate
fasteners are a real problem. If one
little dzus fastener comes out and hits
the fan, C-A-R-U-N-C-H!! It's umpteen
hours of down-time and much moola
for an engine change. During inspec-
tions of the engine inlet area be sure
those fasteners are secure.
Wind up your maintenance by count-
ing the tools as you put them back into
the tool box. r t


FOP ANP SANP EROSION THAT'S WHY ...ANP BE
CAUSE MORE THAN HALF YOU'VE GOT SURE
THE PREMATURE FAILURES TO ORPER THEY'RE <
OF ENGINES TAT GO FOR THE INSTALLED.
PEPOT REBUIL-P. SEPARATOR
SANP SCREEN--
VSOONEST...







TWIST 'ER I WAS JS' FEELING'
I W I EJ ( ^ [FOR LOOSENESS! /
EASY,
MISTER! ...


SWhen you birdmen handle Huey (UH-1) flight control
tubes for looseness or binding on a bearing check, go easy
on the muscle power.
Using too much twisting force on rubes with bearing,
P/N AN206DSP4, FSN 3110-198-0336, in'em can over-
load the bearing and pop out the bearing retaining clip...
exit the ball bearings.
Never use a screwdriver (or any other tool) in a clevis
SVE when twisting the tubes. Use hand pressure only, on the
THE tubes.
BEARINGS
If a clip does pop, tho, fire off an EIR (DA Form 2407)
to the Aviation Command, ATTN: AMSAV-R-EU, giv-
ing the manufacturer's part number, assembly number,
bird model and serial number plus the total hours on the
failed bearing.

PILOTS...USE THE SCAN LINE
The transmission oil pressure caution light on
your Huey (UH-1) can give you the cold clammy .
sometimes without any real reason for sweat.
The light switch can short out if water gets
into the housing, causing a short across the con-
tact points. The short causes the caution light to
glow -normally an indication of low transmis- -
sion oil pressure.
If the transmission light comes on in your
bird, look sharp! Run your peepers up to the
transmission oil pressure gage. If it's in the
green you've got a faulty light switch and you
can complete your mission. Be sure you write I'M
up the faulty switch. CHECKIN'
Remember that the purpose of all bird caution BOTH
lights is to get your attention. Scan your instru- EM
ments for the real status of your bird.




i



8


S.
WHAT "'
HAPPENED TO
THjE DOOR. '*


Now you see it- now you don't??
That's the way it is with the passenger doors on your Huey. Fly with a door
partly open, and the wind can yank it off.
More tail rotor blades get FOD that way than you can shake a wand at!!
No magic needed when you fly a doors-on bird, tho.
Just make sure the door is latched closed. If you want the door open be sure
it's all the way open and secured with the cotter pin. This goes for all Huey
doors, except on the "A" model, which can't be secured in the open position.








CLOSED-SECURE-OK OPEN-SECURE-OK PARRY OPEN-NO. 101

AIRBORNE SMOKE SCREEN




The XM52 smoke-generating subsystem used on the Huey (UH-1D)
needs a strainer in its fog-oil filling-line assembly. And, it needs it now.
The strainer will catch any scum that may form in the fog-oil drum.
Without the strainer the scummy stuff will get fed into the system and
it'll cause wear and damage in the pump and motor assembly.
The strainer (Part- No. U6697) is for free from your general support
outfit.
To install it you just remove the bulkhead quick-disconnect fitting from
the dip tube assembly, clean the dip tube and hose assemblies, insert the
strainer into the flared end of the dip tube and then replace the fitting on
the tube.
Then you can check the filling-line assembly at every filling and clean
it as needed with solvent.
42


It!






THE ML-102 BAROMETER

TO MEASURE THE PRESSURE




<- P.. : P-,_EN.IL




Take 'em outside!
Yessir, you aircraft control-tower types when it's time for a pressure
reading on your ML-102() barometer, be sure you take that reading outside your
shelter.
Thing is, ML-102 barometric pressure readings taken inside your AN/TSQ-
70A aircraft control central, or AN/TSQ-72 landing control central, can be
wrong because of the pressure-temperature differential between the inside and
outside of the shelter.
So when it comes to barometric pressure readings ... take 'em outside!


TAT's NOW XM64

You HuecyCobra armament guys,
* don't let it throw you if )ou read about
the Tactical Armament Turret (TAT)
system under the designation XM6-4.
It's the same old TAT-102A parading
under its new Army symbol, that's all.


WHAPPAY''A
KNOW IT
IS THE SAME! .' .
WHEW...


- ."~









The unusual is "the usual" in-
country, weather-wise.
You hase to fight dust and rain e\er)
inch of the way to keep )our ssorkhorse
in the blue.
With the Chinook (CH-47) main
rotor blades w shipping dirt into the elec-
tronic equipment compartment, the
AN/ARC-51X UHF receiver-transmit-
ter, for one, really takes it on the chin.
The blower filter gets packed with dirt
right-quick.


EVERY
DING DON

i: 1 A SPIT AKN'SHINOLA '
TE OI HETARTHE

MONSOONS HIT--OR
!, ., IT GETS DRY AND DUSTY
2W ,... WHAT KINPA TOUR
SDI. I DRAW ANYHOWF


MAN,


and loose dirt from your radio equip-
ment and shelves by using a clean, lint-
free cloth. Use cleaning compound to
remo e grease and ground-in dirt.

DIRT HERE
GRINDS
INTO
CONTACTS


CLEAN HYDRAULIC SYSTEM-A MUST
Crewchiefs-always keep a clean,
lint-free cloth in your tool box. It comes
in mighty handy for cleaning all the
actuator pistons and SAS links.
\\iping dirt and sand off the pistons
once in awhile gill keep grit from
cutting into the actuator seals, causing
ruined seals, leaks and a contaminated
hydraulic system.


.- ..10.1 I-


'Course, the periodic PM checks spelled out in TM 11-1520-209-20 (Nla. 65) Dirt gets under the co'er and grind,
call for radio-types to eye the filter for cleanliness every 200 hours. into the contacts as the drum turns
If the bird is operating in a dust bowl, tho, better move this chick up to the around can shorten the life of the
intermediate. The same goes for other set checks, depending on) our experience. control. A blast of compressed air
A little compressed air (low pressure) on the filters should get rid of the dirt should get rid of the dirt and grit.
and give you cool-running sets. Fact is. 3ou want to go all-out %ith
Don't forget the control panel, C-6287/ARC-51BX, on the lo\ cr console. the cleaning bit. Get rid of all moisture
44 45


KEEP DIRT
OFF PISTONS


FILTER
CLEAN?


c~





Of course you also want to wipe the top of oil and hydraulic cans before you
open them so you don't end up with a dirty bird-deadlined for a system
cleaning.
When you disconnect hydraulic and oil lines keep a container handy to catch
the run-off. Otherwise, this stuff will drain into the bilge makes removing
the floorboard and cleaning the bilge a real tough proposition.

KEEP COOL JUNK GOES THRU
SCREEN
Never overlook the transmission
fluid cooler, either. Straw will sail right
thru the screens on the clamshell doors
and lodge on the cooler radiators .
cut down on the cooling air flow.
Keep those radiators clean by brush- AND ENDS
ing out any debris. UP ON THE
RADIATOR
PROTECT MAIN ROTOR

REST THE Before you take the main rotor off your bird latch
S.HUB ON on to some old bird tires from the salvage yard. They
A TIRE make excellent shock absorbers for the hub and
blades ... much cleaner than placing the main rotor
on the bare ground.
To further protect the blades from vehicle and
foot traffic be sure you rope off the area.


AREA ROPED OFF SUPPORT THE BLADES
ON OIL TIRES




STOP RAMP FOD

The hydraulic pressure in your baby brings the
ramp up with a "womp!"
If there just happens to be a tool or part laying on
the edge of the ramp it won't make any difference,
as far as ramp closure is concerned. The actuators UATRS
ACTUATORS Will
will push the tool right thru the skin what a PUSH TOOL
revoltin' development! S f'4 THROUGH SKINI
Keep that ramp clear. m B 1 I






I^ ~~^ ^ KEEP REPAIR PARTS CLEAN N

The "keep clean" deal goes for all 4 '
your repair parts, also. Lea-e the parts
in the shipping containers and you'lll .r 4B
project them from the st irlm g dust and m 100 0
pounding rain. Uncover parts only
Aughen ou re ready to put rhem on oour
bSo, let's get those screens on. Protect your engines.
MIN




ONCE PUST








If your Chinook (CH-47) engines don't have an air inlet screen to protect them
from foreign object damage get T move-on, man. MWO 55-1520-209-20/59 (26
Aug 68) has the scoop for your bird. Before you can put the screen on some
models, tho, MWO 55-1520-209-30/67 (27 Jul 67) has to be applied.
So, let's get those screens on. Protect your engines.


NEW BIRD BELT HERE









Before you supply types request Sioux (OH-13) engine cooling fan belts, make
sure you eye Ch 1 (9 Feb 68) to TM 55-1520-204-20P. Only belt, P/N 47-661-
041-3, FSN 3030-879-6507, is authorized. Accept no substitutes.

























/ THIS GOES FOR ANY
EQUIPMENT WITH KNOBS,
PIALS, LEVERS OR SWITCHES!


1. Unlock first if there's a control locking
device. Pressure on a locked control may
put it in a shop for repair.


3 Stay home on the range Trying for lust
one notch more or less than the rated
range is lust asking for trouble. This type
of "fudging" for a little extra may soon
cause you to get nothing at all.


4. Never finger your way past a stop point.
The best you can get from this is fuzzy
operation and early breakdown. And your
arm could get twisted by a statement of
charges and a payless payday.






ON YOUR H-189/GR HEADSET...
THOSE SHAKY,

SHAKY PINS










The contact pins in your H-189/GR headset usually do what's expected-
make contact.
But slippage of the 2 pins in the earphone element-and microphone ele-
ment, too-can often cause a short with the metal shield covering the elements.
That, o' course, can knock out your element.
Trouble is, the contact pins aren't any too secure in their plastic mold, so-o-o-o,
rough handling' or incorrect installation in the headset can shake 'em up.
Then the pins can slip and come into contact with the metal shield on the
element.
Here's what you can do for a temporary fix:


USE EPOXY
PASTE TO
HOLD PINS
TIGHT


Use a fast-drying epoxy paste as a filler around the contact pins to hold 'em
tighter.
This'll cut down chances of a short caused by the pins touching the metal
shield.
To request the epoxy paste, use FSN 8040-847-6387, as listed on Pages 88-
89 of Fed Cat C8000-IL-A (Jan 68).
Nix on trying to repair failed elements. These should be discarded, and only
working elements should be given the epoxy treatment.
50











23-INCH XENON SEARCHLIGHT...

COOL AND CAPABLE
If there ever was a piece of equipment intended to keep its cool, that item's
your 23-in Xenon searchlight.
And you can help keep it that way by heeding this:



This means you don't install any tion sticKEEP YOUR

















IT i1N' T
TH
CLIMATE!










bunged up because of its exposed posi-
This means you don't install any tion stickin' out from the bottom sur-
aluminum bars or a protective shield-- face of the searchlight. You could
'cause they can cause the lamp to over- repair damaged screens by rewelding -
heat and give plenty of trouble, then keep them in shape with careful
What's more, a shield could get handling.
51






YOUR AN/PRC-25
RADIO SET...
IO SET...SAVE THE FRAME


Hold one, Sparks!
Take it a lirrleeasy when
vou shuck that AN
PRC-25 radio set from
off your achin' back. Y
That harness frame WHEw l
is aluminum alloy -
which means it's a heck I-
of a lot lighter than if it
were made out of steel.
It saves pounds on the
back at the cost of an
ounce or two of TLC.
So-o-o-o, please don't ... NOT TO
toss it around, drop it ENTION
from off your back ... -THE RADIO!
or otherwise bang it up.







DON'T BE SHOCKED, BUT...

That handy TL-13A pliers handle fix mentioned in PS 191,
Page 6 is no guarantee that you can go out and grab 10,000
volts. No, sir! Even with milk can rubber tubing, keep away TRST
from hot wires and possible shock sources. You get some THESE
insulation benefit from the tubing, but don't trust it all PANTS...
the way.


TELETYPEWRITER TIP
Take a listen, you teletypewriter types! If you yearn for the best and most
specific poop on lubing your machine, take a gander at TB 11-5800-204-20/1
(Feb 66). The TB also lists stock numbers so you can order the lubricants.
52






TOGETHER AND
LET'S SEE SLOW
NOV, BOTH IN
THE OPPOSITE
DIRECTION
OF THE ERROR!





You say you try to adjust the antenna tune and antenna load for your AN/
GRC-106 radio set like the chart says. But you just can't get the meter pointers
to center at the same time?
Before you send the set back to your support unit, give this deal a whirl:
Turn both knobs together in the opposite direction of the indicator error ... and
do the twisting real slow. It's almost a sure thing that the pointers will center
when you do your adjusting this way.

REEL TROUBLE-THAT'S WHAT








Those wooden reels holding' your multipair cables don't bear up any too well
in tropical climes.
Prolonged outside storage of the reels ... plus the climate .. plus rough han-
dling-all this'll weaken and break 'em.
But you can extend their usefulness by extra-careful handling.
Metal reels do better. They don't break and they can be re-used.
You do have to watch for corrosion on those big metal spools, though.
If your metal jobs have rusted and need emergency attention you can hit the
rust spots with some semi-gloss paint (MIL-P-13596): _
5-gal pail, FSN 8010-584-3157
u55-galdrum, FSN 8010-584-3158 C

Both are olive drab, and the color number is X24087. One caution: the paint
is not effective over spongy or scale-type rust, so do a little PM on the reel surface
before applying the pretty stuff.






ON YOUR AN/PPS-5 I L
RADAR SET ... J,


THERE'S NO
CONNECTION!


If you're coming' up with bent or broken pins in the
connector plugs of your Pipsy-5 CX-8666 cable
assembly, it might be high time to take a good look
at the situation also the pins.
Y'see, there's no guarantee of an exact matchin'-up
of the connector plugs before contact so you've gotta
be gentle and careful all the way.
If you cock your connector plugs during the
matching, you can bend or break the pins.
Or there can be damage when you forget and re-
verse the cable-and end up trying male to male
mating.
Take pains to line up the male plug to the
receiver-transmitter unit and the female plug to the
control-indicator unit.


You're missing a real good thing if you're
not tuned-in to the DX (Direct Exchange) sec-
) tion that supports your outfit.


The DX s stem is authorized by AR 711-16 (para 14-8), the bible for your sup-
ply support outfit Its stocks normally include the repair parts and assemblies
that're coded R (recoverable. repairable) in your maintenance supply manuals-
plus any other fas-.moving, high-density items that can be repaired by your main-
tenance support outfit.







MM ... 5UPPC
----91-~-TA-W ri3l A I T^ FOR


To let you know what items you can swap, the
DX section puts out a DX list. The list is up-
dated quarterly, or so, and it's up to you to keep
the current list handy. The list provides FSN,
item description info, etc.
To trade with DX all you do is fill in a DA Form 2 102.
SExchange Tag, for the unserviceable item, attach the tag
S to the item and deliver the works to DX. (The section is
,- ''-"- normally located close to, or part of, your maintenance
i 1 support outfit.)
TM 38-750 (May 67), para 3-2, gives the scoop on
| filling DA Form 2402.
S- The DX-types see to it that the unserviceable stuff you
bring in gets repaired and back on the DX shelves quick-
S like ... so it'll be ready and waiting next time you need
a replacement.
Your big job in the DX business is handling the un-
serviceable items with a fair measure of respect. That is,
making out the 2402's correctly, and packing, wrapping,
boxing or loading the unserviceable, repairable items so
._ they'll arrive safely at DX.
The better you treat your unserviceables, the quicker
(and cheaper) the maintenance-types can get the items
back on the DX shelves.

KEEPING TABS ON DX ITEMS
You needn't record DX swaps on your repair parts document
register. Just note 'em on your record of demands card (DA Form
3318). DX items may be authorized for PLL stockage when they
collect the required demand info.
When a DX item is out of stock you'll get a due-out claim check for
your unserviceable item (usually section 4 of DA Form 2402), and A ,
you'll get buzzed as soon's DX can rustle up a replacement for you.
And, incidentally, handling unserviceable items with care-so
they'll be easier to fix up-is one way to help stomp out due-out
delays.






INTERCHANGEABILITY SCOOP


Dear Half-Mast,
Change I (May 68), AR 735-35, para 6-4e(1)(e)2, calls for interchangeability data
on PLL items. Does that mean the FSN and description of any other repair part that can re-
place the item recorded on the title insert?
SSG O. J.


I P FR"K. ..2TM35,M49 U/I EA TM9-2300-223- MS .22 I
2P, INTERCH. W/SN 2920-335-4677
9O-953-97B4 RESULATOREN, GEN HQ63 4 58

Dear SSG O. J.,
Not just any other repair part.
A part's interchangeability info must come from a supply manual, or what-
ever publication authorizes the part recorded on the card.
Interchangeability of parts is decided by the people responsible for mainte-
nance and supply procedures for the equipment concerned not by the
equipment users.
In older supply pubs the optional item is listed along with the preferred
item. But, the newer repair parts and special tools lists (RP&STL's) list only the
preferred item.
58f-^t





PLL FOR SPACE HEATER
Here's how you read the allowance column for PLL items in TM 10-4520-
202-25P (Apr 63).











So, for now, don't sweat the initial allowance info in the TM's para 3b. It's
being revised to jibe with the allowance columns.

GAR WOOD M-22 CABLE SAVER
Boom cables on Gar Wood M-22 crane-shovels hit the sheave support spacer
bar on the mast assembly if the boom's raised to 65 degrees or over. A sloping
slot on a I-in radius cut out of the bar will let the cables clear ... and not weaken
the spacer to hurt anything.


(WHAT'S THE

FSN? _



`cp^-", .r- / -.---, ^ s

CO2 cartridges for inflating both the LPU-2-P life preservers and the new
LPU-10-P underarm type now come under FSN 6830-543-6693. You'll find it
in Ch 5 (Oct 68) to Fed Cat C6800-IL.





MIL-STANDARD
PUZZLE? TRY- NUMBER BLOCK
FPOR AIR CLEANERS
Air Cleaner stock numbers for 1-1/2 HP and 3 HP models of Military Stand-
ard engines can be confusing, but here's help.
Models 1A08-I and -II and 2A016-I and -II use oil-bath type air cleaners,
FSN 2940-865-6312, Mfrs code 88408, P/N ERF-4360.
Models 1A08-III and 2A016-III use the dry-core type, P/N 13211E8448,
FSN 2940-832-5673 code 97403.


DUCTS on




For oil-bath cleaners, use pipe-to-tube ELEMENT
elbow FSN 4730-263-4980; Packing, pre- For dry-type cleaners on 1A08-ll and 2
formed, air-cleaner cup FSN 5330-608-6432; A016-111, use Elbow, Air Cleaner Duc, FSN
clamp assembly FSN 4730-908-6292; and 2910-867-8730, code 97403, P/N 13214
duct, air cleaner FSN 2940-439-8081. E7052. Ducts come in Parts Kit duct, Air
On 1A08-1 and -II, elbow, air cleaner duct, Cleaner, FSN 2805-953-1563, code 97403,
is P/N ERF 439,code 88408; on the 2A016-1 P/N 13214E8187. Cores are Element, filter,
and -II models only the elbow is FSN 2940- air cleaner, FSN 2940-225-4842, code 97403,
972-7954, code 97403, P/N 9787E19-3. P/N 13211E8449.

LARC V FUEL FILTERS
Water, water everywhere, including in the fuel filters of
your LARC V. If you're in that warm, wet, and woozy climate
where you have water in your LARC whether you're in the
water or on land, then you have to drain those fuel filters
often.
When you take those fuel filter drain plugs out and put
them back so often, there's a chance you'll damage the threads
and filters.
To make those fuel filters easier to drain, remove the pres-
ent drain plugs, and use brass drain cocks, FSN 4820-275-
2224, in place of the plugs. You find the drain cock listed in
Fed Cat C-ML-A (Aug 68). USE BRASS
Don't replace those plugs for the drain cocks unless you DRAIN COCK
are in that wet climate. FSN 4820-275-2224






RUMOR 50- FACT 30


Dear Sergeant D. C.,
You and the LO's.
The only time you'd put OE-50 into these engines would be in an emergency.
It's too heavy to do a good lube job on these engines. H110/14t


FILTER ELEMENTS
LOW PRICE!
MAYBE NOT
OFFICIAL-- BUT
REASONABLE\
ACCURATE
FACSIMILE... ON
USING VERY )
FINE MESH AILI
FILTER, ITy r


The standard filter elements you use in your filter
separators have a 5-micron filter that'll filter particles
5 microns and larger in size. To give you an idea of the
size of a micron, a human hair is 100 microns in diameter.
So, if you have a filter separator, you'll want to make
sure you get the standard filter element, FSN 4330-983-
0998, that meets Specification MIL-F-52308 (ME). That
means it must come through your regular Army supply
channels and not direct from the manufacturer.
You know what can happen to your equipment when
it gets dirty fuel. Never take that chance, make sure you
get the right filter.






FOR SUPPLY AND
MAINTENANCE TRAINING

Could be you've missed 'em ... the 37 DA pamphlets in the 350-series. They
cover maintenance on the gear you work with. And, several cover unit supply.
You can find 'em listed in Ch 2 (Aug 68) to DA Pamphlet 310-1.
You can get training aids for a few of these pamphlets from your audio-visual
center. They are:

SLIDE NO USED WITH
T38-11-1 (49 slides DA Pam 350-21-1 Organizational Supply
T38-11-2 110 slides) DA Pam 350-22-1 DS Supply
T38-11-3 (28 slides) DA Pam 350-23 Commanders' Maintenance
T38-11-4 (7 slides) DA Pam 350-26-1 M151 Organizational Mechanic
T38-11-5 (S slides) DA Pam 350-32-1 M151 Driver

These come in the form of vellum reproducibles. Your audio-visual center
makes vu-graph transparencies from them. Or, you can use the vellums in
opaque projectors.

Dear Half-Most, WHO KEEPS THE LIST?
What's the score -is
an organizational unit re- SUPPORT M UST-
quired to keep a list of
S2407's on DA 2405 USING UNIT MAY
SSG 0. F. W.


WE KEEP A Dear Sergeant O. F. W.,
LIST ON VA 2405 ) Nope-but you may keep such a list, like TM 38-750
ONLY IF WE says.
WANTA / The requirement depends on whether a unit is on the
y "sending or the receiving end. Support units receive main-
. tenance requests (DA 2407's) and are required to list 'em
on DA 2405. Normally organizational units send DA
2407's only. They keep a list on DA 2405 only if they
find it useful-for control of DA 2407's used as job
orders within the unit or large numbers of DA 2407's
sent to support. W E
WE GOTTA LIST
ALL DA2407'S-
AND PA 24I'5-
SUPPORT ON DA 2405.

62







DOPE

So you want your wire rope and cable in shape?
First, get it clean. Wire-brush off old, caked lube and dirt, every inch-unless
support can steam-clean it for you.





WIRE OR
BRUSH...

WHAT'S NEXT... PEPENDS ON CLIMATE.
In dry, sandy country, just keep it clean and In wet tropics, you use Lubricating Oil,
dry. Using any kind of preservative grease Exposed Gear, Spec VV-L-751, 100 F pour
would just catch grit and grind up the wire point, Grade C, Type II. FSN 9150-234-5200
strands. is for 5 Ibs.; FSN 9150-264-2918 for 35 Ibs.
Heat it to apply, enough so it'll soak in good.
S SOON OIL







In CONUS or Europe, Grade B is summer standard-
800F.pour point, FSN 9150-246-3276 for 35 lbs. Grade
A goes in cool weather, 60F pourpoint,FSN 9150-261-
7891, also 35 lbs. Heat to apply either kind. The FSN's
are all in Fed Cat C9100-IL.
When VV-L-751 can't be had, you can use OE30 but
you'll have to give it more attention. But it's best to get
the right stuff when you can. VV-L-751 has anti-corrosive
in it, and OE30 doesn't. Whatever you use, the object is
to get lube down into the cable core and a coat thick
enough to stick.
You can wrap rolled-up cable to travel- but take off
covers from drums and winches when you get to your new
work point. Otherwise, condensation can collect inside
and rust will gnaw up your wire.






STARTER
SWITCHOUT
ON 2380
CRANE


TOPA ,... FE 1URN
OUT MII STARTER





1




Burning up starter armatures on your 2380 rough terrain crane?
The cure is in a new Repair Kit, P/N SP6029, for the solenoid clutch in the
starter switch.
You ought to install the kit even if you haven't had trouble because the
original-issue return spring is weak, and could hang up on you.
Order the kit from: U.S. Army Mobility Equipment Command, ATTN:
AMSME-MCC, 4300 Goodfellow Blvd, St. Louis, Mo. 63120. They come for
free-and will be available until 30 March 1969.






Dust and more dust ... one of the biggest equipment killers in the
Army. You can keep the dust out of your Model MS 300 Bruning
reproduction set, FSN 3610-753-2263, if you order the heavy-duty,
8 gage, dust cover, Mfr Code 09177, Part No. 20504. It costs $3.40.
CAREFUL: Be sure your machine has cooled before you cover it.


















Self-locking nuts used in aircraft are
precision-made so never try to restore
one with a locally-made tool, like the
one shown on page 55 of PS 194. Use
a new nut.


Die-Alco- MX
Yes you can winterize your multi-
fuel, diesel and gasoline fuel systems
with alcohol during freezing tempera-
tures. Use '/2 pint of Grade III, Spec 0-E-
760B denatured alcohol FSN 6810-543-
7415 (1 Gal can) to every 10 gallons of
fuel. Although some tech manuals
haven't been updated to reflect this new
poop, USATACOM Msg 1-23033 (23
Jan 68) says it's OK. Regardless of the
alcohol mix, be on constant guard
against water getting into your system.
Keep it water-free.




The bit in PS 192, page 19, about us-
ing 4 steel bolts andassociated hardware
in the HueyCobra main rotor trunnion
housing also goes for the Huey UH-1C
model. Dig up a copy and make a note.


Change 3 to your 155-MM towed
howitzer's TM 9-1025-200-12 says you
should jack up your M114A1 till the tires
are off the ground when you're putting
it in firing position. Fine. But watch this:
If you have to extend the firing jack
plunger all the way to get those tires air-
borne, slow down in your cranking when
you near the limit. Else you might hurt
the firing jack stop.



No need to play with fire because the
gasket on your gas can is lost or in bad
shape. You can replace it with a syn-
thetic rubber gasket, Type Ill, FSN 5330-
298-7165. TB 385-3 (Jun 68), Fire Pre-
vention and Protection, Military Gaso-
line Cans, gives you the authority.



Now, just a cotton-pickin' minute
there! Don't wrap a cleaning patch
around your brush when drying the bore
or chamber of small arms. It won't get it
any drier and it's likely to ruin the
brush. Use the swab holder section of
your cleaning rod that's what it's for.


Would You Stake Your LifeA on
the Condition of Your Equipment?




















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