PS

Issue 21

,9 Series

CHECK
MY WORK. 1 ~
W~HY

40~ E~

eCl

LIFE
I IssueN 1 l r
IN THIS ISSUE'
INSURANCE GEE
GENERAL .LY f-

About the most that life Pn 1c7 ., .
Insurance n.l do for a guy U ITrttacW rFh fANer'
Is give his larrmly some in.. 41e
money aher he S had .,; .
the course
For a soldier there's one ,A i .
thing lar better than insur "
dance" It's PM Preventve I U
Maintenance "-
PM will male sure that
your fighting equipment
will figh vhen you've gol .
1o fight Your own per 1...i
son.al Care and cleaning
and the right Iind of han
dling. operation and *dlul t
ing of ,our equipment is the
lrnd of PM that's needed {'-
Not only is PM real "liv
,ng insurance for y1ou. It's
real lhif insurance for cur
gear. toI II'll let your gear
do its job better and let II W -
till it rea-hes a ripe old
age, .., .
You can t beai that Il 4-5
so Iry your best PM It'lI
pay you now

U..a ofl la prjajti of tbb p~ ..l .
.i.ISTRISUTI1: Iii albzcrda wih re-
t quirementsa nJrnitl d pln DA Form 124.

FPS I Mo1a
6-0 Wd r~
401.21

GENERAL&SUPPLY

YOUR....L
yougl
13h, IL

SECTION sE.cTN
I M
A GENERAL LISTS THE FSN OR
INFORMATION '1 PART NUMBER OF
THE EQUIPMENT
.ISTS OTHER PUBS AFFECTED BY THE
RELATING TO MWO'S MWO., SHOWS THE
MWO SHOWS THE
...IT5 "SCOPESHOW5 PAGE NUMBER
HOW RECENT THIS PUB WHERE YOU'LL FIND
IS ..AND PARA 4n (OL 8) IT LISTED... LIIE...
MEANSS YOU'LL SEE FSN,
A SUPERSESSION PAE
NOTICE ONLY WHEI J 1005-0125O12 0 5
ONE MWO REPLACES 1005-07-5382
ANOTHER.

15 A NUMERICAL LISTING
OF CURRENT MWO'S...
LIKE...
MWO NO. DATE
9-IO15-249-20/1 1B OCT 67
9-1015-230-30/2 6OCT 67
CLASSIFIED MWO'5 HAVE
A CODE NEXT TO THE
NUMBER SUCH AS:
SRD (SECRET- RESTRICTED
DATA MWO)
C (CONFIDENTIAL)
FOUO (OFFICIAL USE ONLY).

THIS SECTION OF
YOUR INDEX 15 FOR
URGENT
SMWO's.

rsecTijo '

LIST ALL THE ARMY
MWO'5...ALSO IT
GIVES YOU THE INFO
FOUND IN THE OTHER
SECTIONS OF THIS
INDEX THAT APPLIES
TO A PARTICULAR
S PIECE OF
EQUIPMENT. A

wr-
r.4-

A

j

M odfrcoon
work order
Thlt ,lent \
he"" lnd in nned
i. there whi n
your equipment
glis hung
up
if your poor ,
I1 rqulpm ni t
ntrd c1n MWO
IN up o1 you
II:. oil n
DAPAM 310 .
Th,-US FOLLOW
Arm ME AND
Equrpmni I'LL TAKE
Irnd- of iOU ON A
f Id.iuiudlln -. LQUICKIE
J. ', Ord,.r TOUR
THROUGH
: IT.
4 ,. i
:I2, I

YL :.:"

HERE'S
WHAT
s z ZEN o m

LOOKS
LIKE.

Nori

07Z7701 IF SlanT DEPAERTK Q` THE AIM1 )OICATIOW MIX CK 5

ND SUPPORT VEHICLES
MAO

DATE PRI CAT N/H

5A0.3n, .. .. .. .. .

CrnUli FI rELu K7TOC ILM A"D Pal rruT K DEn. U orF

5oo-o0..73 l aa5-ei-a-9 31) 9 r2
5q 1061-b4a8-29 312 1 j
1005.60 311 1 e
1006 1102-1-8-79 311 h1410
1015-0 1104712-8-19 311 1%lu al
1015.3 6 1102.712-8-29 341 141u I.
5 A 0 1220-J5e44-657 9 1 PA R,.
Ior. 10 RbG
5. 5 1220-67b2182 9 1461 2%
2571- 312 1220-856-9453 9 1

Sor~2.71:-n.. 7 1220-856-v%5b' 9 4 a5
02S%-71-.1.6A 122 u-&7o-c27s 9 -593l 201

105-6F.?l-. 7 I-- 00-I715R6 1553
02b-9550- 59R0 7 1a.0o-aIL-,b9 9 I0O-0-I0187 lST
OoPs-qo-'.p7s 7 1l2.a-75-l9.3 10 I2O-F79-0300 2511

'LICABLE To

ALL MWO -
SECTION

CARRY "U"
PRIORITY-- NATCH !

/ AR 700-18 INTRODUCED NEW
MAINTENANCE COPES. THEY'RE
"C", F: AND E 'D'.
\ WATCH FOR 'E .

You can use your DA 310-7 to enter MWO's re-
BE SURE TO quired into your log book forms.
RACO DMN THEE If it is a support level MWO, they'll add the
L COLUMNIF THE MWO MWO title and kit number ... or give you the kit
A PPLIES TO YOUR number for entering it.
PIECE OF You can use 310-7 for ordering an MWO publi-
.I2zr 1oo0o50 EQUIPMENT cation but it's NOT the authority to requisition kits
SoNo 6026or applying the MWO.

RESCINDED MWO'S
You can keep track of rescinded MWO's b% checking your EIR Digests (TB
750-900-series) and your DA 310-series Circulars.
Once an MWO has been rescinded you're nor supposed ro apply it or remove
it from your equipment without going through command channels for approval
to Headquarters, Department of the Army, or the U.S. Army Security Agency
(whichever one applies).

r Ah Il! u a l. II.STl| .G
~-,~-0-fl.d CAL LISIlrI. OF CSI II.
..DE D TZ .
,- v'-P ,5-212-J/7 8 uEC 65 -L
1-jo o1'b-212-30/8 21 FF.B t b7
IB r -j 215-2-5 30/2 20 uCE 65
., v-1io0-202-30/1 25 JUL 67
-S v-11u0-2u0-2u/3 a 15 MAY 68
9-1100-200-40/14 09 JUN 04
U- -1100-23-21/1 28 JUL 67
v-11u0-218-2I/1 26 JUN 64
0 9-1100-1- 0 23 FEB 66
9-11u--218-40/2 14 SEP 66
v-1l1u0-218-40/3 13 DEC 67
--. v-11u'1-227-20/1 11 JUL 66
v-oI v-11u0-2-7-40/1 31 MAY b5
; -llu0-227-'0/3 15 FEB bb
-..5j- 11u0-247-40/4. 01 SEP o7
0-250 -2u1 01 .AT 6
-ic '?- 02-u -015 20 UEC 66-n-u

'-i0,,- -20 ... .6 30/ 23 SEP .- 5@-,

300000 TACTICAL A
TYPE. MODEL. SERIES fSN
OTHER TACTICAL AND SUPPORT VEHICLES
KIT-BOOM INSTALLATION 1450.710-1755 g

-i

4 '(1

I

o(Li

MATH, NAlCH

Read that V n V'belt for Vital.
It tells you the shape of the belt. but the shape the belts are in makes the dif.
ference between GO and NO-GO power.
Because they're hard-working and out of sight, they're often ignored while
the more glamorous parts of the equipment get all the PM attention. But if they
slip or break, the equipment they're serving is-for the time being-just a
piece of expensive junk.

S MISMATING
CAN LEAD 10TO
DISASTER!

Matched set bells have identical Part Num-
bers and Mold Numbers on each belt
The cure is easy-

Mismating ruins belts fast, and it's
as eas) to see as a pair of pants w ith one
leg longer'n the other.
An old belt may hase as much as an
inch stretch for even foot length. W5 th
matched sets \ou get 1/20th inch differ-
ence or less.
Bur team an old belt and a new one,
and the new belt gets the A hole load ...
which rears up the new belt and burns
the older one.
You can get the wrong belt from
supply belts can get switched in the
shop pulleys get switched or mis-
placed .. so doublecheck pullers and
belts.

POLICE THE LINEUP

Killer No. 1 is wrong alinement.
Canted pulleys can ruin new belts in no
time.
The best check-up tool is a straight-
edge, like a yardstick.
Pulleys too far ahead (or back) or
shafts keyed wrong are jobs for your
unit wrench wizard-the mechanic.
Before you call, also check the throats
on both your drive pulley set and driven
pulley set for wear in the wrong places.

TYPICAL MISAIJNEMENT

NEE iBU Oi EE

ARA>

A pulley wearing bright on the bot-
tom and little or none on the sides either SHINY
has a worn-out belt-or one misplaced BOTTOM
or too small. If one pulley gets a shiny
bottom and the next pulley shows shiny
sides, you have a pulley mismatch.

Undersized belts can overspeed the
items they drive by as much as 100 per
PROPER cent. Just remember: the slanted part,
RIDING the sides, do the work on a V-belt. If it
POSITION rubs the bottom or crowds the sheave
top, something's wrong! (Sheave is that
groove built into your pulley.)

DON'T LOSE FACE
Face does matter on pulleys .. cracks, dents, and chips there make sheaves
worse than worthless. Grit or oil and sand spilling over sheave faces dish them
out so badly no belt made will fit right.
Look for cracked bushings or bent shafts. They make sheaves wobble and
that can wreck the accessory being driven as well as ruin belts.

Check e'ern few da\s
to see ii Sour belt is living in
a good neighborhood. Oil
dripping on faces, overheating, bent guards, or fan blades beating your belts
bring on stretch, cuts, and uneven wear.

^Jj U 'A OIL AND
HEATE ANDSE
RUBBER'S
WORST
ENEMY!

New belts need special care-you can't just install 'em and forget 'em. They
have to get seated and adjusted.
Make sure you adjust at the end of the first hour's run. The next checkup is
made 8 running hours later. Then you check and adjust again every 200 hours -
or as much oftener, in rough service, as your SOP calls for.

TOO TOO
LOOSE TIGHT

Y2 INCH
JUST DEFLECTION
RIGHT... PER FOOT

Mostly you have to watch tension. Take a good hard push with your thumb
halfway between the pulleys. You ought to get 1/2-in or a hair more of deflection
for each foot of span. This works on vehicle accessory belts, small pumps, and
such, but for heavier engineer drives--rock crushers, conveyors, and stuff on
power takeoffs more'n 40 HP-use your TM recipe.

I THINK( WE V
BE T TER GO .
vI'- BY THE 'TM!!

:9-

9
9 E N D

FIREPOWER ,.
M60 MACHINE GUN
GENTLE ON YOUR MIND ,

HEY, WHAT'S 115 -4
A QUICK FIX FOR '
A BUSTED MAGAZINE
BRACKET?

first place. ground-lay 'em gently.
These guides stick out like rabbit ears GET
and bend easy if you're not careful. MAN.
-d-

When they bend, the magazine won't te it r t -E-N-T- haE n
seat right. Bad. Worse yet, when you

try to straighten 'em out, they're likely
to bust roxff another--lay.. and there goes the ball

game.

Simple. Do'If they do get bent, don't you or your

irst armorer try to straighten 'em out.
TsChances are you'll just bust 'em off.
(APFFtJ L If they ever get busted off, don't
Wn H THOSE either you or your armorer fuss with it
Ao bt of a-tal Bent or busted turn the

weapon in to DS right off.
10

Your M60 machine gun is a double-barreled shotgun which is a fact that
could save your hide.
You're issued 2 barrels for each M60 one on the gun, one spare.
You put on the spare barrel when the other overheats which it'll do fast
- every time you fire cyclic, or get off 200 rounds a minute for 10 minutes -
Or even when you burn 100 rounds a minute for 10 minutes.
So never, leave that case and barrel at base, or anyplace but right in your
pack -
You need a cool barrel the worst way when you do need one.
So keep it handy, along with the mitten you'll need to change a hot barrel.

NO, IT'S NOT 2-HANDEDD

YOU A

OR
'LEFrl/7

Y'say your .30-cal M37 MG stopped firing, after only 3 rounds? Quick, lift
the cover and see if maybe you've got the ejector and extractor positioned wrong
for the way your weapon's feeding. For right-hand feeding, the ejector's gotta
be to the left of the extractor. For left-hand feed, the ejector must be to the right
of the extractor. Para 20 of FM 23-55 (Jul 65) has all the scoop.
11

RESISTOR SAVERS... WATCH IT!

When the support types pull a
duplexer from your Nike-Herc MTR/
TTR antenna, be sure they also pull
the R16 resistor in the radio-frequency
monitor chassis.
An R16 is matched (to 1/100 of an
ohm) with the thermister mount used
on the basic MTR/TTR duplexer, and
with the probe used on the improved
TTR duplexer. It'll work only with its
matched component in any duplexer.
So, keep in mind- an R16 is actually

n_

a part of the thermister or the probe,
it's not a separate item, it doesn't have
an FSN... and, it must remain with its
matched component for life... and,
that includes going to salvage together.
Leaving an R16 behind cheats the
rebuild shop because the unserviceable
components can't be repaired without
a matched resistor... .and, a replace-
ment runs something like 198-bucks.
An odd R16 can also cause you grief,
if it should be installed in the radio-
frequency monitor by mistake.

So you read what ir sa)s in TB 746-92.1 (7 Dec
68) about painting and you figure you'd better do
something about the rocket motor cluster for your
Nike-Hercules missile.
Good thinking, but there's not that kind of rush.
Waiting until you have the round disassembled for
other maintenance is time enough.

QP=M-2 "- ___ .f

V~

,

I

PUBS ELEVEN ,
TM 9-1430 768 12/1 (Jun 64)
YOU SAY Y'R WORRIEP TM 9.1430-268.17/2 (Jun 641
ABOUT WHAT PUBS YOU TM 9.1430.268-12/3 (Jun 641
NEED TO GO WITH YOUR TM 9-1430.268.12/4 (Jun 64)
NIKE- HERCULES AN/MPQ TI TM 9-1430268-1SP/1 (Jul 68)
SIMULATOR STATION ? TM 9-1430-268 15P/2 (May 661
OKAY/" HERE'S A TM 9-2330-203-14 (Sep 661
L15T OF WHAT YOU NEED. TM 9-2330-246-14 (Sep 68)
TM 9-2330-246-14 (Sep 68)
STM 5-4120-222-15 (Jul 66)
TM 5-4120-272225P (May 66)1
10 9.2330-246121 (Apr 63)

."-- .- 18
.. .:.:.. ..% .

12

; I
., ..I
.i_

F -

W 1HUMIDISTAT
Dear Half-Mas, EMERGENCY ONLY EIT HUMIDITY AT 50o
Dear Half-Mast,
On the 60,000 BTU air conditioners for our Nike-Hercules BC and RC vans
there's a humidistat for controlling the humidity. What should it be set at?
Also, the van temperature meters are supposed to be set so that the buzzer
will sound when the mercury hits 140 F inside--like when the air conditioner
goes on the fritz. That's kinda high, no?
SFC C. A.
Dear Sergeant C. A.,
A temperature of about 75*F with a humidity reading in the neighbor-
hood of 50 percent is close to ideal. 'Course ... you also want to make
sure you hold the exhaust temperature in the equipment ventilating cab-
inet the way the instruction plate in the cabinet tells you.
You're right... 1400F is high. But as it says in para 96c of TM 9-1430-
250-10 (15 Dec 58), "Under these conditions with the damper and shutter
level set to the open position only emergency operation of the equipment
should be continued." S- A Hl 4

SAY AH-H-H-H

JUST BECAUSE N
LO 9-1430-250-20
DOESN'T TELL YOU
TO LOOK FOR
MOISTURE IN THE
PEDESTAL OF YOUR
ACQUISITION ANTENNA,
DOESN'T MEAN IT'S
NOT A GOOD IDEA.
5~
E I
0~"
T .

Ei~~- 9

Moisture and just plain water can
cause corrosion that'll ruin things like
gears and bearings.
The time to look for the stuff is when
you pull the quarterly service on the
spur gears .. and the tools to use are
a flashlight and the mouth-examining
mirror in your electronic assembler tool
kit. If you spot any moisture, get rid of
it... and then take bets that at least one
cover gasket is shot.
While you're at it, look to see if any
grease has been slopped around by the
gears ... or maybe is caked and diren.
If so, it's cleaning time.
4
^fif
a>JB^

1~

WELDED OR KEYED-
MOX NIX
ear Sergeant W. W.,
The older hoisting beams had their shackle pins spot welded, but cotter keys
e used on the later beams. Either way of holding the pin is OK. #/d4 "

STENCIL IT
Dear Half-Mast,
The "APS SERVICE DOOR" identification
has worn off some of our Nike-Hercules
missiles, a deal that got us some short-
comings during a recent CMMI. Who is sup-
posed to put the marking on the door ...
and what is used--a stencil or rubber
A, stamp?

Dear Mr. L. A.,
The Organizarion does it. using a
1/4-inch stencil. The right paint is
black lusterless enamel. A 1-gal can is
listed under FSN 8010-297-2122 on
page 42 of TM 9-1410-250-15P/1/1
(Jun 68). M 'Wa

STENCIL IT ON BACK

APS SERVICE DOOR

,0o 00
J I .

M llii~l iiiiiiiiii, il~ iliii,,~ liliiiili~ii,:,,

NEW AND OLD M134
BARREL CLAMP BOLTS...

I I

No matter if you'vee got the new or
the old rn pe barrel-clamp-retaining bolt
on $our MIl 3 High Rate Gun, make
sure you tighten it exactly right or
friend pilot or gunner's going to miss
what he's aiming at and lust might
shoot himself down.
Exactly right -not too loose and not
too tight.

Here's whv: If sou tighten [he bolt
too much i'll heal up and expand and
bust off % hen the barrel cluster re\s up.
Then the barrels will wobble around
Sand could tire into the chopper. Yeow!
If .ou tighten the new bolt too much,
Sit will also bust. It'Il just take more
torque and a little more time- but it
ten the hexhead bolt till could still bust!
clamp If y'ou get either the old or the new
bolt too oose, it'll pop out and the same
S, bbaobbl) degook foul-up ill happen.
0-o-.o.o. on 'your coei. ou 45i's.
About these bolts. The one appear-
ing on nel[-issued weapons goes by
FSN 5305-1 -3-2901 P/N 1169106.
It's much stringer and wears a ""' on
its head. You can order it out of sour
it an extra 1' turn subs) stem's parts pub hen the old one
no less gi'es out.
The old-tnpe bolt ( FSN 5306-921-
5i 51651 is eas) to spot b) the screvdriner
slot in its head.
Don't use any bolt that doesn't have
one of these FSN's. They're not strong
enough to take the beating
17

We started an aircraft daily inspection
on a fresh copy ofDA 2408-13, and en-
r' tered "Daily Inspection Due" in block 17 Q l)
with a red dash in block 16.
Then on the previous day's DA 2408-
13 we found an entry that said the engine
idle stop solenoid had been removed.
This entry was transcribed to block 17
l) of the current DA 2408- 13 with a red X
in block 16. There were no uncorrected
faults on DA 2408-14.
While the crew continued the inspection, the solenoid previously removed
was "Inspected OK" by the TI and reinstalled. The mechanic put his initial over
the red X in block 16.

m' I I -
Later-when the inspection was completed-the crew chief put his initial over
the red dash (for the inspection) in block 16.
That left no uncorrected faults on the aircraft-either on DA 2408-13 or DA
2408-14. The way we see it, no faults ,ow "exist" as spelled out in para 4-13c
(2)(j) of TM 38-750. So our crew chief put his last-name initial in box I of block
7 on the DA 2408-13.

did we go wrong?
SP5 A. M. R.

But it's logical to make the first status entry as soon as you find that the air-
craft has an uncorrected fault-or faults. When you've carried over an uncor-
rected fault from the previous day's DA 2408-13 -or found one on DA 2408-14
-this entry during the first step of your daily inspection (TB 55-1500-301-25
and sequence item 1.1 of the -20 PMD) starts the aircraft day as far as status is
concerned. So the first symbol in box 1 of block 7 should be the one for the most
serious uncorrected aircraft fault carried over from the previous day or the sym-
bol for the inspection due-if that's more serious than any carried-over fault.
If the status of the aircraft changes
as a result of (1) fault corrections dur-
ing the inspection or (2) discovery of an ,. ...
additional fault or faults during the in- 15JUN69 UH-IC
section then the new status symbol ST;TUSTODAY
should go in box 2 of block 7 at the same ..C... I T. ....
time the status symbol in block 16 is
changed as spelled out in para 4-13c(2) 2
(t)3 of TM 38-750. 3
And, during the day's operations, a FUEL GA .b-)
new symbol would be entered any time -
another fault which changes aircraft i-.oe .DDE : noe o.
status is found.
19

Which symbol represents
a condition or fault that
TO ENTER affects aircraft status
THE SYMBOLS (safety of flight)?
RIGHT IN BLOCK f
7, YOU HAVE Among the symbols which
represent conditions or
TESE TWONS faults that affect aircraft
status, which represents
the most serious condi-
S edition or fault?
C-

The degree of seriousness of the condition or fault represented by the 4-status
symbols is:

(Deficiency) Most serious. Never entered on DA 2408-14.

(Deficiency) Only a red X is more serious. This symbol is used
only for command-authorized one-time flight or restricted operation. Never
entered on DA 2408-14.

IfB- B(PM or inspection due) Even though this symbol is listed
last in para 4-2c(1) of TM 38-750, only a red X or a circled red X is more
serious. Normally used on DA 2408-13, but with command approval may be
transcribed to DA 2408-14 when it represents a component overdue for replace-
ment or when application of a Normal MWO is deferred beyond its specified
application date.

1 'l (Formerly called a shortcoming) Represents
less serious fault or condition than any of the other 3 status symbols. Used on
DA 2408-13 and, with command approval, on DA 2408-14.
20

Now, back ro the spe-. 01 0 O,
cifics of the problem you
described. Your frst sia-
rus symbol entry under
"Aircraft" in box I of
block 7 should have been
a red X for the uncor.
reacted deficiency carried I.
over from the previous
day's DA 2408-13.

1iJW'C6 9) /A STOP RENIOtED J OM. RUEAWV--
-PAIY/VtMPESCrc MPo Q.A.0 I COMPLETE /rSVU6q 6.A 8~aA..

DtaroaM ltll C I c 6 ..g.c. ,,o on ,a *..*c.. .. tulo I J-TSOl A&IRCRAFT INECTION AND AItNTENANCE IrECORD

Note that on initial entered alone in block 7 is used only to indicate that no
faults exist on the aircraft- as spelled out in para 4-13c(2)(lJ1. Subpara 3 of
the same paragraph tells you that a status symbol, once entered in block 7,
"will not be initialed over, erased, changed, or duplicated even if entered in
error.
That's the block 7 box score as it looks from here.
21

Control cable pulle)s on )our birds
are tough. They hold up under a lot of
tension!!
But pulleys wear. Take those smooth-
ies on your Raven (OH-23) for exam-
ple. Tension on tail rotor control cables
will groove the pulleys.
When are grooves bad enough to
warrant a pulley change? Come closer,
man!
Eyeball the pulley channel. Then
make the feel test.

If the cable twists, rotates or jumps
up and down like a jumping bean the
grooves are too deep and the pulley
needs changing.
'Tain't much you can do about a real
groovy pulley except change it.
When you find yourself changing

_\ C^s ABLE JUMPING
I V B CHANGE PUllEY.

-- -.--- .

pulleys often, tho, you can do some- ness or binding, some of the balls are
thing about it. Distribute the wear pat- shot-and so is the bearing.
terns by rotating the pulleys 90-degrees Let loose of the cable and make with
during inspections, an up-and-down and side-to-side motion
Also, make sure you use a tensiometer to make sure there is no play in the bear-
after every rigging chore to make sure ing. Any rust or lubricant leakage pres-
the cables are not too loose or too tight.==
Either condition will wear those babies I ANY UP
quick-like. AND DOWN
To check the pulley bearing, hold the MOVEMENT?
cable off the pulley and rotate the pul-
ley again. If you feel any bumps, rough-

/1 SMOOTHn I'

ent also means the bearing gets changed.
Yessir-e-e-e, those pulleys will stand
up to stress. Just give 'em the once-over
now and then.
23

Dear Mr. A. F. L., __
The engine will clue you when it starts acting up.
Some oil in the lower intake pipes and combustion chamber is not unusual
for radial engines that have been idle for 3 hours or more.
The amount of oil leakage is excessive when engine oil consumption is high
enough to limit the range of your bird or when oil in the induction system
regularly fouls the spark plugs.
Oil in the induction system can give you an improper fuel mixture which in-
creases the chances of detonation. You know what detonation can do to an engine
-overheat, fatigue the scrap heap! !

Oil leakage am be crmsed by worn valve guides
in which case oil drins into he lower intake pipes
when the engine's not operating.
Worn piston rings will also allow oil to flow
into the combustion chamber. 5 EASV/ TO
FIND 17.!

To find out if the seal is the culprit, ground run the engine for 10 minutes at
high power settings. Shutdown the engine and eye the intake pipes on cylinders
number 3 and 7 for oil.
The R1340-61 engine overhaul work specs have been revised to closer toler-
ances and more exacting clearances in the area of the impeller seal. So, leaking
impeller seals should give you less trouble in the future. J/

YES INDEED WE DO?
YUP.
Dear Windy, I
I came across an entry on the DA Form
2408-18 for our Seminole that has me
baffled!!
It seems that every third periodic we're
supposed to remove the engine generator REMOVE THE GENFRATOR
and eyeball the drive shaft splines for EYEBALL THE SPLINES
excessive wear which can lead to failure.
TB 750-931-1/1, Ch 1 (21 Nov 66) is
referenced on the form. A look at the Sem-
inole PMP checksheets calls for no such
check.
Do we pull the generator for inspection?
SP6 E. D. B.

Dear Specialist E. D. B.,
Yessir-e-e, eye the old 100-amp generator, P/N 30059-002, which is listed
in the technical bulletin.
The new 200-amp generator, P/N 30E20-11B, also gets the big look.

CYLINDERS A-OK
Dear Windy,
There's a difference of opinion-and
that's putting it mildly-about cylinder
seepage on our Bird Dog 0-470-11B
engine.
STAIN a We get what appears to be oil stains
HERE where the cylinder barrel is shrunk into
OK the cylinder head.
This seepage-does it or doesn't it call
KSOOL. IT. for a cylinder change? SP6 B. A.

Dear Specialist B. A.,
Relax! No cylinder change is needed unless there is a loss of compression or
some other serious fault.
The stain is actually lubricant applied at the factory when the cylinder barrel
is threaded into the head.
Very slight gas seepage forces the lubricant out. It usually stops when the
threads are plugged with carbon during engine operation.
The condition is not hazardous. Engine operation and performance are not
affected. / ).,/

PASS THE
DOUGHNUTS,
PLEASE!
B^^^ ^-f

It's true-Seminole (U-8) engine ex-
haust stacks are flat so that they mate
flush with the cylinders ... no gaskets
needed.
But, don't get steamed-up when a
stack mounting flange becomes warped
and starts to leak!
It's doughnuts-er-r-r-r gaskets, to
the rescue!
'Course the stack flange must be flat
.006-in maximum, for the gaskets to
make a complete seal.
Use 2 gaskets, P/N 73720, FSN
5330-069-9647.

Add gaskets at the other 2 exhaust
stacks on the same bank of cylinders.
The 6 gaskets will give you the right
stack alinement.
No need to use gaskets on the other
side of the engine unless there's a leak
there also. Then you'll need gaskets on
all cylinders.

THE FLAT SIDE GOES TOWARD THE
CYLINDER HEAD AND THE RAISED
BEAD SIDE TOWARD THE STACK
FLANGE... GASKET BEADS
INTERLOCKED!

Q

TIME-SAVING TAPERED TOOL

^ 11 //,

LAST

REF 1" SO.

REMOVE THIS PORTION '
OF SOCKET TO DIMENSIONS
AS SHOWN.

REF X6" WRENCH SIZE

rkil a called Aid o. rece prb of
amererr Ia orgaon..isonal mesnlurene
persnnet rha heLr rc.npdd from re
nrf AG DI.ulbrion Cenf rs I Bullh.i
For complete dfai.s e DA Pam 310-
IMar 68IJ. and Cb 5 IAp 69J. rM'. rs'l,
arl. DA Pam 710-6 Ilul 681. and Ch 3
lAps 691. SCl onad S I. DA Pano 107
rDec 681 MWO ,

TECHNICAL MANUALS
IM 5-331E. Feb. Ulilnellon oa Eng,
Coan. Eqip V.lume E Eng' Spec P.s
pose & Eipedl.e Eq.p.
TM S-3431-223-12, Mar, hailoe Mid
Weld.n. Shop
IM 5.3740-O06-25P. Fab. Pel Conarol
Intel.idde Spraye' Equip.
IM I-3805-237?OP. Fab DED Malor.
.led Rooa Grader
TM S-3810-20b-12. Jon. DFD '0 lao
2 C. Yd Clawer Mid Basic Unil Clane.
Shoelv
TM 5-3125-217.12, Ap. 900 Gal
GCmslty Feed Walei Collapubloe Tan
D.rhll.buu.
1M 5-2815-221-15 CS. Api Waler
D.. _bul .
IM 5-3195-281-15 C1. Apr. Bit.o
rfueale
TM i-41O-201-11 C3. Ap.. I1.000
IBU Floor MIg Air Codllloner
TM 5-4120-213.15, Feb 6.000 BIUI
SH Ele Molor DbIn Aa, Condil.n.ng

TM 5-4210-205-12 C2. Apt. Fre F.grh
.ag Equ.p.
TM 5-4210-221-20P. Feb. 125 CM
An Compaelons.
IM 5-4310-1236-12P C. Apr I1 CFM
Ar Copseonars
IM 5-4310-261-15 C2 Apr. 60 CIM
All Copnuaort
TM S-4110-278-SP. Feb. 60 CIM Aiu
Cap. sesrs
IM -42320-11.12 C2. Apr Pelioleum
C-prr.lugal Pump
IRM 54370-1702IS C3. Apr. Plolm.-
Cent.Igoli Puamps
IM 5-4320-733-15 C1 Apr. Ftloleum
Canilnlsqol Psmp
IM -3920-212.25P. Doe. Piromlem
DOilib Fuealr.q Sy AI Ironsportable
Hor Dw.den & Hose Assembiles
IM 1-4940-.20-TOp. Feb. IAk Mid
Conaio Manl Shop Fqulp
TM 5-6115-270-2OP. Feb. 3KW 60
Cr Eng Drvn Geo Sell.
IM 5-6115 271 1 CS. Apt. 3rW 400
Css 3KW 60 Cyc & ]C DC 1tg Drsn
GC. Saes

TM 5-6115-276-20P, Feb, 2KW 15V
Eng Drvn Gen Sels.
TM 5-6115-290-15 C3, Apr, 4KW &
Under Eng Drvn Gen Set.
TM 5-6115-295-20P, Jon, 3KW DC
28V Skid Mtd Gas Eng Gen Sa.
TM 5-6115-296-20P, Jan, 10KW 60
Cyc Eng Dtrv Gen Sets.
TM 5-6115-323-15 C3, Mar. 1.5KW
60 Cyc Eng Drvn Gen Seos.
TM 5-6675-225-15P C2, Apr, Survey-
ing Equip.
TM 9-1015-215-20P, Mar, 4.2 Inch
M30 Mortar on M24AI Mount.
TM 9-1100-205-12, Apr, ADC XM129
(SADM).
TM 9-1100-226-12 C3, Apr. MADM.
TM 9-1100-250-12 C7, Mar, Nike-
Here.
TM 9-1410-585-14, Mar, Chaparral.
TM 9-1430-378-20P, Mar'.Peshing
Guided Missile XM78 AImuth Laying
Set.
TM 9-1440-250-15P/1/1 Cl, Mar.
Nike-Herc & Imp Nike-Herc.
TM 9-1440-585-20P, Feb. XM54
Chaparral Guided Mil Sys Intercepl-
Aerial.
TM 9-1450-375-14 C10, Mar,
Pershing.
TM 9-2300-216-20, Jan. M107 Gun,
Ml 10 Howitzer.
TM 9-4910-487-10, Feb. Cylinder
Head Grinding Machine.
TM 9-4935-303-12 C3, Mor, Sergeant.
TM 9-4935-587-20P, Feb. Chaparral
AN/TSM-95 Guided MIl Sys & AN/
D5M-79 Guided Mal Test Set Shop
Equip.
TM 10-4940-201-10 C2, Apr.
Petroleum Distrib.
TM 10-5410-221-24P, Feb. Rigid Const
Expand Shelter Tents w/Airlock.
TM 11-5805-448-15, Mar. Lenkur:
Elec Co Type 5216A Transformer Panel.
TM 11-5820-546-15, Mar. AN/TRC-
11 I Radio Reapalr Sel.
TM 11-5840-296-12/4, Jan, AN/
FPA-15, AN/FPS-69.
TM 11-5895-262-10 C10, Mar. AN/
MSO-15.
TM 11-5895-264-25 C3. Mar, AN/
MSG-4.
TM 11-6625-1530-15, Apr. Lab Types
7010 & 7011 Coaxial Noise-Generalor
Airborne instruments.
TM 11-6625-1725-15, Apr, E. F. E.
Laboratories Meter Panel
TO50-29N003.
TM 11-6625-1842-12, Mar, AN/USM-
264 Sig Gen.

TM 11-6720-244-12, Feb. Still Picture
KS-15(4) Camera Set.
TM 55-1905-201-12P CS, Apr. Marine
Equip.
MODIFICATION WORK ORDERS
9-1005-262-30/1. Apr. M24 7 .62-
MM Mach Gun Sublys Helicopter
Armament.
9-1220-221-30/4, Mar, MIS Gun
Direction Computer.
9-1240-346-30/1, Apr. M21A1 Tele-
scope Mount, M101/MIO1AI 105-MM
Towed Howitzer.
9-2330-212-20/10, Mar, Nike-Hera
Imp Nike-Herc M406 M406A1 M406E1
M406E2 Antenna Mount Low Bed
Trailer.
9-4940-254-30/1/3, Mar. Imp Nike-
Here Simulator Test Set Group
10167770.
55-1500-210-30/16, Mar, CH-47.
55-1510-204-30/13, Mar. OV-1.
55-1510-210-30/9, Apr. CH-47.
55-1520-214-30/28. Apr. OH-6.
55-1520-221-20/12, Apr, AH-IG.

SUPPLY CATALOGS
SC 1080-97-CL-E07, Feb, AAA Gun
Comoufloag Net Set.
SC 2230-97-CL-E01, Mar, RR Track
Moint & Rehab Equip RR Canst Set.
SC 3820-97-CL-EO3, Mar. Rock Drill-
ing Equip for Placement of Explosives.
SC 3820-97-CL-E09, Mar. 250 CFM
Troller Mtd Pneum Tool & Compressor
Outfit.
SC 5430-97-CL-E01, Mor. 10,000 Gal
Collapsible Fabric Petroleum Tank Assy.
SC 6210-97-CL-E02, Mar, Airfield
Runway Aircraft Operational Area
Light Set Supplementary Equip.
SC 6230-97-CL-E02, Mar. tSKW Gen
Iloum. Light Set.

MISCELLANEOUS
AR 715-22, Mar, High Dollar Spare
PartI Breakout Program.
DA CIr 600-63, May, Conversion to
SSAN for Personnel Identification.
DA CIr 750-29, May, Changes to
TAERS.
DA Cir 750-30, May, Modification
Work Order Control.
DA Form 2715, Apr, Unit Readiness
Report.
FT 105-AS-2 C2, Feb, MI08 105-MM
Howitzer.
TB 10-1600-200-20/1, Mar, Fixed/
Rolor Wing & Aerial Delit Equip for
Parachute Pers.

ATPAY'S ENPW 4
HIT THE SACK ANP
PREAM7 HIS
FAVoRrr' DREAM )

5 eat it
.T- TIS miGHT WAS 1aquelW"
DIFFERENT....

Woo A ou? Actffyo HAFF
SKEWERED
UPTtE PEAL' '
mA iI,

US FLY-TYPES PEPENDP
ON YOU MAINTENANCE
TYPES... NEIN ODPERJA?

ABERYOU SKEWER UP
BY LEAVING LOOSE BOLTS
UND SHLOPPY WORK. VE
HAF ACCIDENTS!

PUMBKOPFF, You Bur
ARE PEALING MIT THERE'RE
MILITARYSHTUFF ALWAYS
.-VERRRY VERY EASY WAYS
KOMPLI-kATIP. TO. OANY
MAINTENANCE
JOB!

AAH... FEH, VOT'5 YOUR
TM'S FARSHTOONKIN
S1 A INSTINCT COMPARED TO
PRAG, THE ACCUMULATED
I YEARS OF KNOW- HOW
KNOW BY TECHNICIANS, PILOTS
IT ALL AND MECHANIC S-
INSTINCTIVELY/ VITCH MAKES UP
THE MAINTENANCE
PROCEDURES%!?

30

rFWAPPYA MEAN, MAN.,,.'M A
NATURAL BORN MECHANIC,,,YOU'RE
TALKING' TO THE HOTTEST PRAGSTER.
IN PASADENA.,, I CAN FIX(
ANYTHING!

V _s

7,AN4 -7VA7AINT.
VARLING I AIN'T FINISHED
YET.. HoLT UT
A-j&- uLNCE!

THIS 15YOU WORKING ON AN
AIRCRAFT... FOR INSTANCE. NEINt

HERE'S A E BUT,
NUT ANP I HOTCHKIS,
GOT A PIECE DOES THE
OF RADIO NUT FIT
WIRE... THEY'LL EXACTLY...
Vo... ./AND IS THE
WIRE THE
RIGHT KINP??
MIGHT BE
A DIFFERENT
METAL! A

WHAT ARE YOU... WELL, NO,
SOME KINPA APOLOGIST UT BACK
FOR THE ESTABLISHMENT? AT SCHOOL
THEY TAUGHT
US TO FOLLOW
THE PUBLISHED
MAINTENANCE
DOCTRINE!

The peculiar thing about flight--
it seldom forgives oversight!
Do the job by the book--
Have the inspector look--
And your bird'll stay up--
and uptight!

lf~

WM~~

II^L

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

WHAT PDUNNO, rI FEELS BUT WHEN THE THIS PUB
TORQUE ABOUT RIGHT...THIS PUB SPECIFICALLY DOESN'T
YOU USIN; IS GOOD ENOUGH! SAYS "INSTALL HAVE ANY
JUNkER7 NUTS" IT MEANS sucH
TIGHTEN NUTS TABLE!
TO A GIVEN TORQUE
VALUE IN THE.
STANDARD TORQUE
TABLE!

Sso,
HOW ABOUT
TM 55-405-6
("CHANGE I) OR NOTE
iA NO TIME
"TM &5-4Q5-2 TO LOOK
AND THE HSE T UP!!
CLAMP FITTING
NUTS IN
TM 55-405-7.

WE'P BETTER GET
A TECH INSPECTOR
TO GO OVER IT AND
"CHOP'OFF THE JOB...
THAT'S A RED X CONDITION
YOU'VE CORRECTED SO...
WE'P BETTER GET HIM TO
JOB LOOK OVER YOUR WORK
FINISHEP.D AND SIGN THE PA FORM
2408-13... THAT'S
QUALITY CONTROL...

HELLO,
SARGE.
C'MON
OVER,
WLL YA?

WHO NEEDS HMMMMM..,
ANYONE TO LOOK
OVER. WHAT I
DID... THIS IS 1 SHHH..
A MATTER OF HERE
PRIDE WITH COMES
ME! THE
SARGE
T'CHECK
OUT!

! IT MAY I
LOOK GOOP-o
BUT THE FIRST
JOLT AND SHELL
WIGGLE LOOSE!

PIP YOU TORQUE
THESE PROPERLY?
THEY LOOK TOO I
TIGHT,.. THE PLATE
SHOULD HAVE A
LITTLE PLAY...

WHERE'P YOU BUT, SARGE,
GET THIS NUT... IT LOOKS
IITS THE WRONG OKAY...DON'T
TYPE FOR THIS / GET SO
FITTING? NIT PICKY!

r AND THIS 4
LOCK WIRE.,,
LOOK A COUPLE
OF BENDS AND-P

r A Br OF BUMPIPN
IN TURBULENCE AND
THE BOLTS WILL SHEAR
OFF ON YA'/ ,

'/YOU'VE GOT TO FOLLOW THE RIGHT TM
ON WHAT HARDWARE TO USE AND
PROPER TORQUE VALUES. I

SO LONG, HOTCHKJS
SEE YOU LATER.

BUT, SARGE, YOU'LL GET M/
WILL YA CHOP- CHOP... AFTER
OFF ON MY YOU'VE DONE THE
2408 13 .HERE JOB RjIHT!
IN BLOCK IS!
77 'li:~

l ->- -~

THIS IS A HECK OF A TIME
TO GET ME TO INSPECT A
JOB... WHEN PID YOU
GET 50 GUNG HO!! !

r LISTEN,
r SARGE, VOU
CAN'T BE TOO
CAREFUL AROUND
AIRCRAFT.. THESE
FLY-TYPES DEPENP
ON THE MAINTENANCE
1 DO... ER, BESIDES
I GOTTA GET
BACK TO
SLEEP...

Q'A
I &ug#xg C

YOUR PRR-9
QUIT PURRING?

i PON'T
THINK
It'S
THE
3AITERY!

Next time your AN/PRR-9 squad friendly ol' rushin' noise when you turn
radio receiver stops purring at you it up the volume, try a new horn.
may be the clue to check out your re- More on sound: When you connect
ceiver horn as well as the battery. the earphone, push the plug straight
Into the receiver jack. Wiggling it into

... TROUBLE COULD BE WITH
THE RECEIVER HORN ELEMENT
The clue is heat: summertime, SEA,
or whatever. Heat swells the glue in the
receiver horn element. When the gook
swells, it reduces sound or gives you ...
nothing.
So, when you're low, the temp's high,
and a good battery fails to give you that

place bends the connector spring...
which can put the zap on your receiver.
An occasional check on the setscrews
of your volume control can keep you
in business. The screws work loose, and
the sound doesn't get with you. Keep
em tight!

CONTROL '"
SET SCREWS
1.; -

-I

I

Your AN/GRC-50(V) radio set'll hit
the communications high-spots and give
dependable service-but it'll make out
even better if the AT-903/G antenna is
properly alined.
Naturally, what you're after with
antenna alinement is the best possible
results. So-o-o-o-
Before starting the alinement, dis-
connect the patches at the repeaters, to
arrange a multi-hop system as single
hops.
When you're using PCM multiplex-
ers as terminal equipment, turn off the
multiplexers during antenna alinement.
When you've got the mast and an-
tenna installed (instructions in TM 11-
5820-538-12 Jun 67) and your single-
hop system is set up, then rotate the
antenna toward the target station. For
this, you can use info from a topograph-
ical map. Establish communication over
the order wire circuit.
Next, you extend the remote order
wire circuit from receiver R-1148(P)/ e
GRC or R-1331(P)/GRC, or the order
wire binding posts on the outside of the
shelter wall, to the base of the antenna
mast, using the TA-312 telephone set.
Connect your H-91 headset (if it's
available) to the TA-312 to free both
hands for mast rotation while you're
communicating.
Don't crank your TA-312 for signal- r
ing unless the TA-182 telephone con- n
verter is installed in the circuit. r
You can use the following methods
for peaking the signal level:
For a reading of 25 or under on the l
REC SIGNAL meter, rotate the mast t
in one direction until the noise level of o
the order wire circuit increases sharply; I
38

-Where )ou'%e got a REC SIGNAL
record the position of the antenna by meter reading of 25 and up, rotate the
parking the location of the yellow ar- uST TOE ORDER
ow on the base plate. REC IKC o 1R.
Rotate the mast back through the FC
maximum signal level until the noise O %W
evel increases sharply. You can record. u .
his position by marking the location nsiri -
f the yellow arrow on the base plate.
ock the mast in this position. HECK THE REC SIGNAL METER FOR PROPER SETTINGS

mast in one direction until you get a
reading of 15 on the R-1148(P)/GRC
receiver or the R-1331(P)/GRC multi-
meter.

SRecord the position of the mast by a
marking the location of the yellow ar-
row on the base plate. Rotate the mast
through the maximum signal level until
you get a 15 reading on the meter.
Mark the position of the yellow ar-
row on the base plate, then rotate the
mast to a point midway between the
marks on the base plate.
When you've completed the antenna
alinement, lock the mast in position,
reconnect the repeater patches, and start
your electrical system alinement.

NIGHT VISION NOTES
Tonight, or any other night you plan to use your night vision sight AN/TVS-
2 (Varo Models 9927 or 9927A), is the perfect time to apply a basic PM pointer
or 2 which'll keep it, and you, in action.

Resist the urge to pry the
reticle power cable loose. That
hard rubber shield is intention-
ally glued to the chassis...
for several very good reasons.
Think about 'em, and resist.
Otherwise, you're setting your
sight up for a repair job.

The sight's hood screws gotta
be in place and snug but
make sure you have the right
screw. You need FSN 5305-914-
5902. A substitute might be too
long ... which means it could
damage the objective lens.

forgt Ithe hiavy horded
I hlhniquL ri il\ r.il( rid|uol
m nrl knub F...rltq 'r p I 1is
lrup ran Iau ihe inside wirrd
lhacr nnd :Gp your inqht

'18

- -

TERMINAL
STRIP
DRIP A

Moisture can make a drip of the terminal strip in your MK-1039/G head-
set-microphone kit (used on CVC helmets with AN/VRC-12 series radio sets).
In heavy rains water can seep onto the terminals of the CX-10453/G cord
assembly and short 'em out. You can cure it, so hang in there while you get
some clues.
If a drippy strip happens to you, you'll get a loud, continuing squeal in all
3 switch positions of the MK-1039 while it's connected to the C-2298/VRC
intercom control. Further, the radio set will stay keyed. You can't transmit,
and you can't use intercom.
You organization repairmen can put the fix on it like so: Take the headset-
mike off the helmet. Eyeball the 4-screw terminal strip that's giving you the
trouble (see page 1-3 of TM 11-5965-282-15).

THIS STRIP!./ /

Dry the strip and spray the screw connector and other exposed metal there
with MFP varnish FSN 5970-683-4297 or 5970-548-9520. That's quart-size
... and do what it says on the container.
When you remount the MK-1039, be sure you don't scratch the varnish.
41

Dear Editor, I/
To discourage personnel working around the AN/TPN-8 and -18 radar sets from
mangling a hand while the "cocktail shaker" (elevation actuator arm) is operating,
we came up with an 8- by 8-in aluminum safety plate.
The plate attaches to the frame around the radar set and keeps the operator from
using the frame as a hand rest. With a I-in clearance between frame and arm, using
the frame as a rest can result in a serious injury from the moving cocktail shaker.
Any kind of guard or safety plate would be satisfactory, just so it doesn't interfere
with operation of the arm.

42

(V.154816 B E- G O

YR TIP'N' RINC... which could beneirtdoc
&IPN'RING!

Is R-5 resistor ruination plaguing the
18A3B panel of your CV-1548/G tele-
phone signal converter?
Reversed polarity of the tip and ring
wires can heat up the R-5 causing
visible scorching of the panel.
This can be caused by problems in
your MTC-I or MTC-9 switchboard,

ir or miles down

Thing to do is: Contact the operator
of the swithboard and tell him the tip
and ring wires seem to be reversed.
The operator should then call his
maintenance man to check into reverse
polarity of the tip and ring assembly.

HERE'S A GASSER FOR YOU

Nitrogen gas that's just a scope hair off required purity can
put the $12,000.00 compressor of your AN/AAS-14A Infra-
red Detector Set in the salvage yard. Naturally, that knocks
out a No. 1 tactical device.
The gas must be 99.95 per cent pure. No less. There are
only 2 FSN's that'll get you the purity you need: 6830-656-
1596 and 6830-782-2643.When you use this number 2643
specify "no substitute." The only difference is in the size
PURE of the container.You can't use any other without tearing up
T6E the compressor. A substitute gas (even 99.5 per cent pure)
Splugs up the adsorber in the compressor-refrigerator in
lJ ess than 100 hours operation.
FSN 6830-656-1596 gets you a 200-cubic-ft container. The
only other one you should accept is FSN 6830-782-2643,
which gets you a 184-cubic-ft container of the same purity
nitrogen gas. Accept no substitute.
You should spell out the only acceptable substitute on your
requisition form.

KEEP THAT KLYSTRON

HOLD

NEWT!

Keep that V1501 (MKK-24) klystron tube in your AN/MPQ-4A radar set, at
least until you check it out.
Even if it fails to oscillate, it may still be good.
Y'see, the jumper connecting the heater cathode DC ground return is
missing from the plug on all klystrons procured on Contract DAAB-05-67-
C-1116.
Have your support shop measure the resistance between pins A and C on the
plug. If the measurement indicates an open circuit, the klystron won't oscillate.
Be sure to install the klystron like it says in TM 11-5840-208-20. Set the kly-
stron tuning screw and klystron drive assembly to the extreme clockwise position.
Adjust the klystron as per para 29A through 29D of TM 11-5840-208-20. If
you run into any problems, call for help from support.

T-302 HOT HEADS
Are you burning out V1 HV rectifier
tubes in the PP-685A of your T-302
transmitter?
Most likely, the bad guy is wrong
screen voltage adjustment on the trans-
mitter tuning heads. That kinda trouble
can put your AN/TRC-24 radio set
down.
'i' To head off downtime and save a few
V I (Type 836) tubes, check and adjust
the screen voltage during your periodic
PM and whenever else you've got a few
i minutes to use up.
Para 3-5j, page 3-28 of TM 11-5820-
287-12 (Apr 67) tells you how to adjust
voltage on the tuning heads.

THE GUARD TAKES IT HARD

J TIPPED
IT!

Hold one!
You vehicular communications r) pes
gotta take it easy when you're handling
that AN/VRC-12 series of radio set out-
side its regular vehicle installation.
You could botch the guards on the
components.
Tipping the RT or receiver over on
either of these guards can tear 'em out WATCH THESE GUARDS!
of the front panel.

ai 4*

Ho%'d you like to tackle a forced march %ith %our gas mask inler fouled up?
You wouldn't get far-you'd be fighting' for air, you'd get weak, your legs
would buckle and you'd drop in your tracks for sure.
That's about what happens to your multifuel engine truck when its air cleaner
gets plugged with dirt...
... like when you don't clean the filter element more often in dusty opera-
tions ...
... or you don't do a good job of cleaning when you finally get around to the
job.
< HOW EVERY DAY'S
OFTEN NOT TOOOFTEtN
DO 1 CLEAN WHEN THE DUST
THEM 15 I THICK AND
S FILTERS. HEAVY.

Figure it this na3): .. ..
If you get all dirty ridin' up in the cab, your engine air cleaner is gerrin' it
worse-suckin' in gobs of that dusty air, at about 410 CFM as a matter of fact.

BREATHE EASY
Take a look at your air filter indicator once in awhile. If it shows red, your
filter's plugged up and your engine's fighting' for air. So you hop out, just as soon
as you can, and give your filter element the ol' emergency treatment.

Black exhaust smoke or poor engine power usually means your air cleaner's in a bad way -
even if your air restriction indicator doesn't tell you- so keep an ear 'n' an eye out for those
signals to clean your air filter.

Under real dusty conditions, you might have to go through this routine several
times a day to keep your truck breathing' easy.

BLOW IT OUT...

Back at the motor pool, before you worry about getting yourself clean, haul
out that air filter element for a better cleaning.

77 VEHICULAR
AIR SUPPLY

Dig out the air hose in your truck's .
OEM. You'd better hook it up to some-
body else's truck for an air supply-
you don't wanr to run yourengine with
no filter.

Now blo, th Th,.n gv. II n
dirt our oF your blown ,vei onc.
d:lier mel~mrn, fi h out,.d, and --
trst from IthE ftii h up ,rh
nid toward ohll thilr blo,, r .-'-
oui l Ade from the ind. Td
BLOW AIR INSIDE

BATH TIME

At least every 1,000 miles, you change
your filter element.
But you don't throw your old one
away. It may still be good and can be
used again after it's'washed and dried:
Before washing the filter element,
you give it the complete air hose treat-
ment. Then, if your inspection shows no
sign of damage, you wash the element,
like so:

1. Use detergent and cool, or lukewarm,
I water in a dean tub or bucket. Never use
gasoline or other solvent to clean the
filter element.

SOAPY
WATER
11111-

2. Let the filter element soak for 5-10 min-
utes to loosen the dirt.

3. Then slosh it around to wash off the dirt. ... THEN CLEAN
WATER
4. Rinse the element in clean water.
5. Shake it good to get most of the water
out and maybe some more dirt at the
same time.

6. Look the element over good for holes or SHAKE
other damage you might have missed OUT
before. ,, WATER

another round.

DRY... DRY... DRY
A washed air filter element must be thoroughly dry before it's put back into
service (drying may take as much as 3 days in real damp weather). There's a
terrific suction through your air filter, and your engine can pull water right out
of it-maybe setting up a hydrostatic lock condition in the cylinders.

4]!V W611

Dear Half-Most,
We hove oil bath air cleaners on some of our vehicles and also on some of our
generators and earth-moving and load-lifting engineer equipment.
Oil in the air cleaner reservoir sometimes needs changing in between the intervals
called for by the LO.
Two questions:
How dirty is dirty when deciding whether the oil needs changing?
Is used engine oil suitable for use in the reservoir (as some LO's specify)?
COL S. A. R.

Dear Colonel S. A. R.,
There was a time when 1/4 inch of
sludge in the bottom of the reservoir
was the most allowable.
Now, though, any sludge or grit
sitting on the bottom of the reservoir
is too much. If a finger, rubbed across

the bottom, brings up sludge, it's time
to change oil. Rubbing some oil be-
tween the fingers may show there's dirt
"suspended," or floating, in the oil, but
this by itself is not enough reason to
change the oil.
Dirt settles to the bottom of the reser-
voir when the oil becomes so loaded
with light, airborne dirt that it can't
hold any more. Then the oil doesn't do
the job it's supposed to. Dirt carried
on into the engine cuts its efficiency-
and life.
Saving on oil at the expense of an
engine-or a mission-is a losing
game.
For the same reason, used engine oil
in the air cleaner reservoir is out. Older
LO's that call for used engine oil will
be changed to specify new engine oil.
0

3 PAIRS
WIN /

2-(LAMP, FSN 4730-782-5458
No such thing? Not in poker, but 3 RIC 824 UNTIL 9060, THEN RIC 59C
pairs is the winning combination when
it comes to clamps for the air intake
system on your 5-ton multifuel truck. BONDED
These're the clamps between your air CONNECTIONS
cleaner and turbocharger. You've prob- 2 (LAMP FSN 4730 950 6134
ably got only 4 clamps now, but you'll RIC S9(
need 2 more if the 2 bonded hookups
come loose, like it says in Article 76,
page 39, TB 750-981-3 (Jul 68). You'll
be seeing' new-production vehicles com-
in' out with all 6 clamps-2 each of
the 3 types.

2 CLAMP, FSN 4730-782-5459
RIC B24

FSN FOR HOSE

I L

Wonderin' how to get your hands on the preformed hose running from the
water pump to the thermostat housing on the 283 cubic inch engine in your
M114/M114A1 Scout? Use FSN 2930-570-9659, routing identifier code S9C.
51

TACTICAL WHEELED VEHICLES...

EXTRA PROTECTION
Dear Half-Mast,
Highway warning kits and fire extinguishers are authorized for our vehicles under
certain conditions given in AR 385-55 w/Ch I (Oct 66), para 19h and para 23.
Where do we get 'erm?
I TRIED CWO W. s. B.
THE LOCAL
ECONOMY,
SARGE

Dear Mr. W. S. B.,
Usually, a vehicle's -10 TM lists fire extinguishers in the OEM (BIIL, OVE,
etc.) when applicable to that vehicle.
But if you need more, or different, extinguishers to meet your needs under AR
authorization, you'll find the full range in TB 5-4200-200-10 (Jun 66), Hand
Portable Fire Extinguishers Approved for Army Users.
Of the several extinguishers offered, the one recommended.for "general pur-
pose vehicles" is the 2 3/4-lb job that comes under FSN 4210-555-8837 (often
called the "freon" or "CF3BR" extinguisher). It comes with a mounting bracket.
And you can get replacement cylinders under FSN 4210-708-0031. These items
are in Fed Cat C4210-IL-A (Feb 68).
NEED TA, r;,,ll, I
YOU CAN
iGET 'M.

A highway warning kit, like's normally carried on the M543 5-ton wrecker,
comes under FSN 9905-534-8376 (with mounting bracket) or FSN 9905-563-
7284 (without bracket), listed in Fed Cat C9900-IL-A (Jun 69). /
,2I /

SOGGY CYLINDERS

Dear Mr. R. S. L.,
Before a newly-installed air-hydrau-
lic cylinder is condemned as a bad one,
it'd be best to check 'n' see that it was
bled-per paras 180b(6) and 177c in
TM 9-2320-211-20 w/Ch 1, 2. 3 & -
(Nov 68).

ELEDER VALVES

BLEEDING THE SYSTEM 1'uFii'
INSTALLATION IS CRITICAL!

Some "bad" cylinders have been
found to be perfectly OK-just a case
of the mechanic forgetting to go through
that critical bleeding procedure during
installation.
Since you're keeping your cylinders
well lubed, their short life in service
may come from water allowed to build
up in the air reservoir tanks. ;-,9 ..
So the hint here is:
Drain air tanks more often--even
every couple hours if condensation is DRAIN THE AIR RESERVOIR TANKS
building up that fast.
,qd _if 53

HINGE PIN
HINT I

Your sturdy 5-ton dump truck will
leave you flat someday, if you don't lube
the hinge pin regularly.
When a hinge pin on an MS1 or
M51A2 rusts, it freezes to the sub-
frame bearing, cracking the welds.
Coaxin' or cussin' won't help you
then. What you'll need is a rewelding
job on the sub-frame bearing-and
it'll have to be according to TM 9-237
(Nov 67).
Save the labor. Keep the hinge pin
well lubed, and you'll see everything
will be jim-dandy. LUBE THE HINGE PINS
will be jim-dandy.

TOOL BOX TIP
Water getting into the tool box of your M127A1C
or other G750-series 12-ton semitrailer? Don't wait
until it rusts away your tool box innards and dam-
ages your tarp and chains.
Drill a hole in the rear of the tool box, like it says
in Article 97, TB 750-981-3 (Jul 68) and put in a
drain tube. I

MULTIFUEL ENGINE TRUCK...

DIESEL SLOBBER

Like underarm wetness, "diesel slob-
ber" only looks bad.
So, maybe you've got trouble and -
maybe you don't when you spot what
seems to be oil leaking out of the ex-
haust manifold joints on your multifuel
engine. Before you holler for help, find
out if it's only a case of diesel slobber.
Give your vehicle a good road run.
Get your engine up to normal operating
temperature. Keep 'er there for a few
minutes. Then stop and check your HEK
exhaust manifold again. FOR I
Still leaking? You may have a sick
engine-get help.
No wetness? It was diesel slobber-
unburned fuel and condensation, most
likely to happen when humidity's high
and temperature's low. No problem.

TANK TRUCK 'N' TRAIER... FUEL CHANGES

Dependin' on what kind of fuel
you're goin' to haul next, your M49C-
series 2 1/2-ton tank truck or M131-
series 12-ton tank semitrailer may need
cleaning, flushing and a change of filter
elements.
Or you may only have to drain out
the old type and load up with the new
type.
Get the straight dope in FM 10-67
(Oct 68), Petroleum Supply in Theaters
of Operations. In Appendix H, you'll
find 2 charts telling what you do when
switching from one kind of fuel to an-
other. Chart A is for uncoated tanks.
Chart B is for coated tanks.
55

, Ir

'THAT BANPAGE
SMELLS OF
` PERFUME.

4^

Your life, or the life of your buddy,
may depend upon your first aid kit, and
that's why it's so important to know
how to take care of it.
S-T-E-R-I-L-E is the clue you're look-
ing for. \
You have a first aid pouch in which
you carry a first aid dressing and a
packet of sodium chloride-sodium bicar-
bonate mixture.
FIRST AID DRESSING
The first aid dressing is just a gauze
pad and two gauze strips. It may be the
tie-on type, FSN 6510-201-7455, or the
pin-on type (2 safety pins), FSN 6510-
935-7084. The pad's placed over the
wound to stop the loss of blood and
body fluids, and it also keeps dirt out
of the wound.
The dressing may be packaged in a
plastic bag or it may be wrapped in
aluminum foil, then it's put in a card-
board outer wrapper. Check that outer --_
wrapper to see if it's in good condition.
If it's been damaged, check the inner --i BE
wrapper to make sure it's air tight.
If you have the dressing that's in the THE FIRST AID
plastic bag, just squeeze it gently to see PRESSIE BAG
if there is an air leak. The air should I S
move to one end of the package (like
56

INSTRUCTIONS FOR BuR CASES
EMPTY THE CONTENTS OF
ONE () ENVELOPE INTO CANTEEN
FULL OF WATER (I QUART). SHAKE
WELL. DRINK ENTIRE CONTENTS
SUOWLI OVER ONE (1) HOUR
PERIOD.

%v hen you're pressing the end of a bal-
loon that has some air in it). But easy
does it, so you won't cause a leak in
tht wrapper.

If you have the dressing that has the
aluminum foil wrapper, eagle-eye it
closely to make sure there are no breaks
in it.

bonate mixture, FSN 6505-663-2636.
It's used for injury caused by third de-
gree burns. You get two packets.
You'll have no trouble knowing
whether those packets are good or not.
Hold 'em up to your ear and shake. If
they don't rattle like sand in the pack-
age, you'll know there's a leak in the
package and it's not good. It should be
replaced.
57

SI

You won't let
your buddy down
if you
eagle-eye
those litters
to make sure
they'll do the
job in case they're
needed.
Here're the
things you want
to be on
the lookout for:

YOUR LITTERS IUP TO SNUFF?

'MAY I 5U66EST THAT YOUR
PM PROGRAM ON LITTERS
SHOULD INCLUDE TESTING OF
CANVAS WEAKENED FABRIC! /

REPAIR PARTS

It doesn't matter whether you
have the folding pole folding litter,
FSN 6530.783-7205, or the rigid
pole folding litter, FSN 6530-783-
7905, you can get repair parts for
both.

Here's what you ask for:

Handle, Litter(wood,9 FSN 6530-784-201~fl

LITTER Er lIFlFrI :..TRAP -
buckle or slide loop miss.
ing; webbing frayed; dirty.

SAs a field expedient you can test the canvas by
having the heaviest man in your outfit put his full
weight on one knee on the canvas. If it rips or tears
it should be replaced.
You can repair small holes in the litter cover by
patching it with the material you find in the tentage
repair kit, FSN 8340-262-5767. If there's any doubt
as to whether the canvas is strong enough to hold a
250-lb load, don't take a chance, replace the cover.

290M TRACTOR
BRACKET FIX

TRANSMISSION! /
4

Transmission support brackets crack-
ing on your 290M? Then it's time to get
your soft-hearted support mechanics to
put on reinforcements.

You do it with 2 strips of Type 1020 hot
rolled steel. Make the twin reinforcing pieces
this way: Y

Y2 a R TT Y -- e y" nT
4" R. TYP 2Y2"
X17%2"

VIEW BEFORE BENDING %" TYP

Then the braces go on the rear side of each
bracket, welded with a good, solid seam, like
this: I

HOUGH LOADER ANTI-HUI
Hey, Operator-change hydraulic
oil and filter on Hough 90M, 90CM,
and H60M Loaders every 250 hours M
now, not every 1,000 ... and clean the -
oil tank and honeycomb sediment trap
when you do. If you have to repair or o
replace major hydraulic parts, like a
cylinder or packing, and dirt or pieces
of packing may have gotten into the
system, drain out all the oil and replace
the filter before you refill. The word
is in the EIR Digest from USA Mobility
Equipment Command for October 1968.
See TB 750-971-4, page 20, chapter 3,
para 46 for authorization, as well as in
upcoming changes to the 3 lubrication
orders.

NEW ADAPTER FOR OLD

FF DOPE

Bff

[i~Ei~1

BE SURE TO
ClEAN
TRAP, TOO.

,RILLS

Impossible to use reverse-buttress
1 1/2-in tools on rope-threaded crawler
drills?
No more. Those older Type 60 bits,
striker bars, drill steels and such can
work now.
Just order Adapter Coupling, 1 1/2-
in rope thread to 1 1/2-in reverse but-
tress thread, code 30760, P/N JRA-32,
FSN 3820-129-2571. The new piece
comes from U. S. Army Mobility Equip-
ment Command to fit all Army 225-lb
class crawler rigs.

LUBE THE MITE RIGHT

When you use the M106 portable
disperser (Mity Mite), be sure to check
the gear-box lube daily, or else you'll
soon be minus your handy disperser.
The gear-box-blower assembly will
konk out on iou.

The Mite, in fact, is authorized a
warning decal, FSN 7690-800-0687 to
help you remember the daily lube check.
Order it using RIC B54.

In case you've missed it, the oil filler
plug is on the side of the gear box, just
under the muffler flange, and you have
to use the Mite's socket key to remove
the plug. The disperser takes Lubricat-
ing Oil, general purpose, corrosion re-
sistant, symbol LO(FSN9150 252 -
6174) and when it's sitting up its cor-
rect oil level is just under the filler plug.
To fill the gear box you have to tilt
the disperser on its side, but take care
you don't overfill it, so you'll not have
overflow problems. And, be sure to wipe
up any spilled oil before you operate
the disperser.

N~

< MITYY MITE ,
FUEL

The correct fuel mix for the engine on the M106 (Mity Mite) disperser is:
1/2 pint of oil (OE 30) to 1 gallon of gas. But, some goofed-up gas-tank caps
call for only 1/4 pint of oil. That kind of mix will damage the Mite's 2-cycle
engine. So, check your disperser's gas cap soonest and chuck it if it doesn't read
right. Replace it with the spare cap, FSN 2910-560-0119, authorized in the
disperser's BIIL. See page 50, TM 3-1040-254-13 (Apr 68).

M2 COMPASS CARRY-CLIP

THIS I'M SURE
PON'T LOOK I HAD MY
LIKE PELTA COMPASS
COUNTRY WHEN
TO ME! WE STARTED oE TO
OUT. B ANGKOK

There's a new hold-on for M2 Compasses now- hooks
the case loop to suspenders or pistol belt. It's FSN 5340-
753-5580, Keeper, W/Slide. Take your compass out of
the case, pry up rear loop, slip keeper thru it with jaws
open, snap the catch 'n' replace compass-and you'll
drop fewer M2's in the mud.

-PACKAGE HEX'.

If you're hexed by a part or component that was damaged because the ship-
ping package wasn't put together right, lay your hands on DA Pam 700-3
(Feb 69). It tells you all about filling in DD Form 6 on faults in packaging for
shipment.

LONG POCKETS

Dear Half-Mast,
What's the FSN for the 8x8-in visible index pockets that'll take the new DA Form
3318, Record of Demands Title Insert card?
CW3 C. E. R.
Dear Mr. C. E. R.,
For now, the longer pockets are available only through local purchase (AR
715-30). Where local merchants aren't handy, though, some units get local OK
to trim the new card to fit the 8x5-in pockets.

The title insert is placed over the record of demands card when it's placed
in the pocket.
If you can buy 'em locally, be sure to provide complete identification on your
filing equipment so you'll get pockets with the proper attaching hardware.
63 V4l

Dear Half-Mast,
TM 3-4240-202-14.(Nov 68), in the PM
check list for the M 17 mask, says inlet valve
caps with worn flocking are OK-except
in the Arctic. But here in VN where it's
sandy and dusty, worn flocking lets the
sand and dirt get under the valve and
keeps the valve from seating right. That
allows breath moisture td get trapped in
the elements, which makes them unser-
viceable.
A full growth of flocking is needed here,

CW2 J. R. U.

*De MS. ). U. ...... .. .
ca dariy c the wether, sand o. grit.
can dimage the filter elemnents in any
wa, y .can replace cap having wdrn
flcidduThe OK Ls right there in tt;f
T l1-6h(2) It says the inlkt

. The TM gives the CO the OK to d

needed. See para 3-if.
^.S^M-i^t

INLET
VALVE CAP

UNDER UNUSUAL
OPERATING CONDITIONS,
YOU CAN REPLACE CAPS
THAT HAVE WORN FLOCKING.

No more GAA for that air-hydraulic
cylinder in your G742-series 21/2-ton
truck. That's the word in US Army Tank-
Automotive Command TWX 1-11816 (28
Jan 69). So forget Note 20 in LO 9-2320-
209-12 (Oct 68). The TWX gives instruc-
tions for direct support to clean and
service your brake system if your air-
hydraulic cylinder has been lubed with
GAA.

tnt On e '7 oo e...
... and dangerous, too. This's the steer-
ing wheel shaft nut on some M715 11/-
ton trucks and M725 ambulances. Some
loose nuts have cropped up, so it's in the
interest of your own life and limb to have
yours checked. This nut should be
torqued to 45 to 60 Ibs-ft.

Rd"t9q 4944
Have y'got a need-and author-
ization-for a rotating amber light on
your wrecker truck? FSN 6220-947-7570
is the 24-volt job for most military-design
wreckers. For 12-volt commercial design
wreckers, get FSN 6220-947-7535.
Need blue? FSN 6220-947-7621 is 24-
volt, and FSN 6220-947-7572 is 12-volt.
RIC is S9G.

Would You Stake
the Condition of

Welders note-Don't miss out on the
new MIG welding training film. It's TF 9-
3973, Metal Inert Gas Welding. It's in
black and white and 26 minutes long.
Check with the nearest audio-visual com-
munications center for a copy of the TF.

Next time your CMMI team drops in
it'll be using the new inspection guide-
lines in DA Pam 750-10 (Jan 69). Scan
through it first chance you get and stay
on top-'stead of behind-the AR 750-
8 ball.

(&"Uewtiow (^eutaf
You can keep up to date with the
latest word on calibration if you get hold
of Change 1 (Feb 69) to TB 750-236 (Sep
68), Calibration Requirements for the
Maintenance of Army Materiel.

Operator's Record
Better get hold of Ch 1 (Oct 68) to TM
21-300 (Jul 67), Driver Selection and
Training (Wheeled Vehicles), if it's your
job to fill out DA Form 348, Equipment
Operator's Qualification Record. It gives
a sample of a 348 filled out, along with
other info about the form.

Your Life yon
Your Equipment?

we Neoure NO Mi We/dci Move

1 \--! -- \ kM'WIi I (TcBci11YQ

DA."'.' .*'-." '* ".q, Pam hle 31 i you ?I nd"
to M ic on, WLork O

: to Modification Work Orders
,- : .

AJ. .: :. ..: ..... ..... .

i ;... :.-,.. : ." ..- : : ". .
,4.M ..e.7 ..=, ,.=., .. :, :,.,..1 .: ,- .I;": ..+, "" .r :

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