PS

Issue 190

L1 8 Series
THEn

"Mainfenar
If's survivva

st ,k,-c ;# h
calkb~~

EKI)ll

MAIN riCE 4

nce is more than a way of life.
. Compete on

rness ma go communicating, the maintenance youennce.

I.eet of nine ?"f maintenance means survival in
trun ar wth must business to an outfit that hauls logs, just

what your '' be kept ready by maintenance done by
acks hun- imagine what it means to a guy who
naoe s ia a.. P not only hauls but has to fight, too!"
78,000 lb in Connie's right. No matter whether
rougherthan you're hauling, shooting, scooting or
quimentess isgrow- communicating, the maintenance you
nessis tuow- -i 4' .
gingtrueks why -.do, especially the preventive mainte-
1. "How can nance, means survival. Your equipment
tenant pro ..t must be ready to do the job. It can only
cos, if you be kept ready by maintenance done by
r what your W-1 .;.rJ"'
in intelligent the man who operates it and by the unit
ntb.. -' w\! mechanic or technician who backs him
Sarii ner. 7, up. ^ Z

AIR MOBILITY 2-17
Cargo Sling 24 AH-G 12.13
LOH To, 10.11 T41B 1417
Saeminole 10.11

COMMUNICATIONS 18-27
AN/PRC..-9.10 18-21 AN/TRiCO 24
BA-505/U Baityl 22 RT.246..524 25
H150/PT Handset 2223 Xenon Searchlihlt 25 '
AN/PRI4.AN/PRR.9 23 AN/GSS 2
AN/PR47 24 SeurilyLamp 27
AIYRVac-12,AN/IIP-26 27

M6DMG 37 M14 30
179 37.38 "Basebalr Grmead 4
MIB-ADAC 38 M1 Subsyr m 4
MI Collimator 3 Rine Branmal 41

GROUND MOBILITY 42-49
U-Ton Truck 42.43 M274 46
%-Ton lruck 44.45 M3542 47
Welding TM 45 Outside Mirror 4
M416 Iraller 46 Norllp Painl 46
MII3MM113Al 49

GENERAL AND SUPPLY
Office Machlnes 505 Cooking Tips 60-61
Grader Filter PM 54-5 M2 Burner Tools 62
IN 38-750 57 Space Heater 82
Hot 011 Heater 57 Generators 63
Eectr'arn's Tool KI 5851 New Publlcation 28
Supply 3.5.9.15.16.23.25.27,
37, 38.41.42.43 and 16
Use o! funds for prinllr.l ol this puolca-
lion has been approved by Headquarters.
Department of Ihe Army. 26 February 1968.
DISTRIBUTION. In accordance with ie
quiremenhs submitted on DA Form 124.

s ,A I
P-- ,"-- [;
0/,2 / ]

raE PREVENTIVE MAInNTCE MorniLv
I Iue N 190 196B Serie
IN THIS ISSUE

SUNG LOAOS...

NEW SLING LIMITS FOR CHOPPERS
There's nothing more embarrassing
after lift-off than having one leg of a
sling snap, followed by a second -
third fourth .. ca-runch! !

S" ---"---;==n
That's the theme song of troopers
speeding equipment and supplies into
the fracas. 'Tis mighty sweet music
when those choppers make the scene.
Air delivery means getting there fast-
est with the mostest and proper load
rigging plus regular sling PM is a
"must" if supplies are going to reach
the ground in one piece

AMX

FSN
1670-753-3789
1670-753-3790
1670-753-3791
1670-753-3792
1670-753-3793
1670-753-3794

Length, Feet
8
9
11
12
16
20

The safety margin for these 1-3/4-in, 3-loop nylon
webbing slings has been increased by lowering the
lifting capacity from 20,000 lbs to 10,000 Ibs:

FSN
1610-753-3188
1670-753-3630
1670-753.3631
1670-823.5040
1670 823-5041
1670 823-5042
1670-823-5043

TM 55-450-8 (20 May 66) on ex-
ternal-transport procedures will clue
you on rigging rolling liquid transport-
ers, CONEX containers, trucks, 105-
MM howitzers, ammunition, chow -
you name it! TM 55-450-11 (21 Jun 68)
on helicopter external loads rigged with
aerial delivery equipment will g i e s ou
standardized procedures for rigging
"type loads" with slings, clevises, straps
and containers.

Length, Feet
3
8
9
11
12
16
20

If you wound up with the short end of the stick when these slings were passed
out, run ) our peepers over Army SC 1600-IL (11 Aug 67) and place your order,
man!
B, doubling the slings you can gain 75 percent of the original rated strength
of those slings, however. "
For c sample, with a leg using a 3-loop sling and a 3-ft sling (ring) add another
sling and ring and you can safely lift 17,500 lbs. You can get the same ratio
increase a ith 2-loop slings. Each 3-ft, 1-3/4-in wide ring, FSN 1670-753-3788,
has a 10,000-lb lifting capacity.

ORE
^'^^^^j^J^ .^^^e"

I `I

^
w

rr

BY DOUBLING THE
SLINGS YOU CAN

BYLCARRYING ATH
GET 75 PERCENT MORE
CARRYING CAPACITY!

HEY,

RIGGING TIPS
Rigging and maintaining your slings
go hand in hand, just like the words and
melody of a hit tune.
For example, nylon webbing rub-
bing against a load generates friction
and heat weakens the fibers ... the
sling can snap just like it had dry rot! !
So, latch onto some scrap canvas and
masking tape.
Wrap the canvas around the sling
where it makes rubbing contact with
the equipment being hauled. Use mask-
ing tape to hold this padding in place.

If you don't
hove canvas,
an old towel
or rag will
do the trick.

Then, for example, when you rote an
MI51 or 500-gal bladder of JP-4 )our
slings won't take it on the chin.

S -_ -,- ___-. -
._-.- C^ ^* iZ

4

Comes the time when a Chinook picks up supplies the load has to be rigged
and ready to go, with the load weight accurately estimated.
'Course you know the lifting capacity of your workhorse. No doubt your
little green book has a lot of mighty important figures in it like typical load
weights and the weights of various pieces of equipment. Keep it up to date!

JUST RIGHT
Take the 1-1/2 ton, FOR TRANSPORTIN'
G754-series, 400-gal OUR MEAD
water trailer, for one. It SUPPLY!
weighs 5,615 lbs full.
One 2-loop, 12-ft sling,
Sro 2-loop. I l-ft slings
and one apexing ring r
will handle this baba. p'

That's the kind of info you want at your finger tips because it will clue you
on the sling to use. You also want to pass the weight figure along to the chopper
crew.
Most equipment to be air lifted will have the weight stenciled on it. If not,
there's always the specifications in the TM, right?

When using the A-22 cargo bag, FSN E(K .
1670-242-9169, for hauling ammo, WEIGHS
chow, water cans and such you'll have IN THE
to make with a pencil and paper. You TM
don't need to compose a song or any- ---
thing like that. A little simple math
should give you the load weight. TWO$77/
TON
ONCE YOU AYE
GET THE WEIGHT TANK
ON THE TYPE OF LOAD
YOU'RE HANDLING-- LEG -
HERE'S HOW TO LEG-. YOU USE .'. UI
FIGURE THE T' HE LONGEST
SLING LENGTH! LEG DISTANCE
TWIXT THE
LEGS TO
GET THE
PROPER ,
SLING
ALWAYS USE LENGTH
4 LEGS
5- fMn

USE 2 DOUGHNUTS -* 7v
If you use the 10-in, 1-3/4-in wide nylon endless sling, 10,000-lb capacity,
FSN 3940-675-5001 don't use one. Use 'em in pairs to be on the safe side.
When you actually make your hook-up, be sure the link assembly on the ring
is positioned away from the chopper cargo hook... 90 degrees from the hook
is about right.

Once the chopper swings in for the load, brace yourself for
high winds. Goggles and a helmet will come in handy to pro-
tect against flying debris. Keeping the hook-up site policed
up will protect your baby blues and help prevent FOD to
the bird.

If you have the time use a static discharge probe to get rid of the static elec-
tricity. In dry weather it's not much of a problem. Just grab the doughnuts and
insert them in the chopper lifting hook without touching the metal hook and
you won't be seeing stardust!!

OOH
MY ACHING'

CREWCHIEFS CLEAN HOUSE!

The CH-47A has plenty of power so it can lift over the 33,000-lb max gross.
The problem here is that going over the gross weight shortens the life of bird
components and that means more maintenance.
Bird weight plus crew, fuel, tool boxes, armor plate, survival kits, guns,
ammo, rations and troopers with their gear mean your brute could gross 24,000
-maybe 25,000-lbs without an external load.
Try to leave extra gear behind-protect the components!

__// MORE

SAVE THE SUNGS
-When a chopper swings into your
LEIF! pad for a delivery it's going to be on the
LEiP scene only long enough to disconnect
E t,- he load, especially if rounds are "in-
KNIFE! coming."
Still, treat the equipment right so it
can be used again 'no cutting,
please! I
U EL. Take care of the slings and be sure
11 IT, LORII
SVE GOTTA they get back to your supply for use
USE IT again.
AGAIN!

PM A MUST O

-, O'ct o1 o

IL v o

Pulling regular preventive maintenance before and after use will keep 'em
in shape.
Say, for example, you have some of those A-7A, A-21 or A-22 cargo bags.
TM 10-1670-238-20 (17 Nov 65) has all the PM services spelled out for you.
The sling gets checked for dirty, worn, cut, frayed or torn webbing and cloth,
loose or broken stitching and for broken, burred or corroded rings and adapters.
Don't use damaged equipment. Get it repaired -pronto.
Strike up the band for troopers who / HE HOW LONG
keep equipment ocean and stored in a ,OU BEEN 5UNNIN
ventilated, dry place.THE NET5 '
When nets have been caught in the .. .. rt5 -
rain, spread them out to dry before stor-
ing them. You'll be singing the blues
if you leave them out longer than neces- P/Z/ fA/
sary because direct sun light weakens
fibers.

~CC~L-

Make a simple "A" frame for your slings and hang 'em up to dry out of the
direct sun light. This baby will give you good air circulation and cut down on
mildew which ruins slings.
Hold down on the cleaning bit cause vigorous brushing can weaken the
material. Clean only the soiled areas by shaking and brushing.
When shaking and dry-brushing won't fill the bill, spot-clean cotton compo-
nents by gently brushing or rubbing the soiled areas with a soft-bristle brush or
clean cloth dampened with dry-cleaning solvent, tetrachloroethylene, Spec Fed
O-T-236. FSN 6810-819-1128 will get you a 5-gal pail. Rinse the area with
solvent and let the material air dry.
SPOT CLEAN NYLON AND RAYON RINSE THE WEBBING
THE SAME WAY. USE EITHER WITH CLEAN WATER AND
LET IT AIR DRY.
I.Al LGAO GIVE METAL, PLASTIC
OR .WAR + AND WOOD THE SAME
WAR TREATMENT.
i /UP

Rough spots, burrs, rust and corrosion on metal and wood that won't clean
off can be removed by using a metal file or by buffing with crocus cloth. Sand-
paper will come in handy on wood items.
If you can't identify the material spilled on the slings, sing out to your sup-
port. You might be dealing with acid, fertilizer or some other destructive stuff
that will mean condemning the sling.
If at all in doubt- don't use the sling. 7 .

S-OTHER PUBS

As you know, some of your cargo bags and other sling-load equipment is
Also used by parachute riggers on air-drop operations. So, if you've got some
time on your hands, rock 'n' roll your way thru these pubs for additional info:
TM 10-500 (7 May 65) Airdrop Supplies and Equipment, General.
TM 10-1670-240-20 (25 Apr 66) Miscellaneous Airdrop Canvas and Webbing.
TM 10-1670-201-25 (3 Dec 65) Maintenance of Parachutes and Other Air-
drop Equipment.
FM 10-8 (22 Oct 64) Air Delivery of Supplies and Equipment in the Field
Army.
Rigging your sling loads does not call for a parachute rigger MOS although
you may get some help from them if you're new in country. Once you get a
little OJT under your belt, tho, you'll be in harmony with the old pros.
END

MWAY WE GO...WITH

i 'i

Dear Editor,
Ground handling the Cayuse (OH-6A) can tie up 4 men and a heap of time. Like
maybe when the defueling area is some distance from your maintenance tent or shop.
This bump and grind, rut vs gut routine can stir up a mess of maintenance mayhem
for man and machine.
We've cut manpower and time needed for push-pulling the LOH almost in half with
a quack-disconnect attachment added to the towing bar (FSN 1730-967-9556).
With skids resting on stirrups the tail boom rides on a steady keel no dropping
down to sink the stinger; no skin punctures, no mashed mechanics.
Our support welding shop made this rig in jig time. All you need is a couple of
bolts/nuts, 2 quick-disconnect pins, safety wire or clamps, old water hose or rubber
tire, and some scrop iron.
Now 2 men and tug do the.job safer, easier.
SP4 J. L. Lyons
Ft Knox, Ky

EYE THE DIPSTICK
"Easy does it" when filling the hydraulic
brake reservoir on your F-model Seminole.
Pour in MIL-H-5606 to the point of overflow-
ing, and that red stuff will drip down on the
Omni AN/ARN-30D, seep inside the cover and
short out the works. HE
To keep the direction finder set out of the HE FLUID
avionics shop for a thorough cleaning, add NEVER
hydraulic fluid to within 1 inch of the reservoir OVER FIL
top... that'll do the trick.

MOn0 TOW

(Ed Note Looks great. Just tow it slow! 'Specially over rough ground. You
don't want to bend a skid tube by hitting a bump at high speed! This should be
a big help in snow, rain, cold weather.)

KEEP A CLEAN SCREEN
To keep the fuel injector pump And remember the screen gets
of your F model Seminole lubed, cleaned every 3rd PMP according
be sure you eye the fuel-injector oil to the poop in para 5-336 of TM
screen for contamination every 55-1510-201-20 (29 Apr 66).
PMI.
You want clean oil for the oil- FUEL
operated servo which is part of the
fuel injector. A dirty screen will
give you faulty fuel delivery a
rough running engine.

t3i

PMD COBRA BOGIE WHEELS...

If the fangbird's wheel prangs, it sets down hard and part of the weapons
system-like maybe the XM18 mini-gun-takes a knockout punch in its bread-
basket. Not to mention the possibility of getting a spraddle-legged Cobrabird!
P .- 1, -

A Huey Cobra (AH-1G), the Army's scoot 'n shoot fastback
fling-wing, can be red X'd before it gets a chance to bare its
fangs unless mechanics snub the bogie wheels tight onto the
skids.
First thing you do on THIS BANE
a mission rollout is eyeball FUNNY LOOKING
the landing skid eyebolts. s NEW HAMMER.
Be sure they're not benr, THO
worn or chipped
. 'specially where -
the wheel assembly ;
is attached.

The forward eyebolt is the important one, so check it c-a-r-e-f-u--l-y on your
walk-around. If the wheel assembly doesn't fit snugly against it, the holding pin'll
slip out real easy, too, if you hit a bump while towing the bird.
Next, check the mounting pins on the wheels. Be sure they're straight, not
chipped, cracked, broken. You'll probably find the fixed rear mounting pin in
A-1 condition, but that spring-loaded front pin gets a real Sherlock Holmes exam.
When you add the wheels to the AH-1G, check the space between the pump
cradle assembly and the forward eyebolt. Too much space allows the pin to slip
out 'specially if you're towing over rough terrain.
12

N So-o-o-o, slip a
washer-or t o- E\YEBOLI
on te pin to ill up tde space.
Make sure the wheel assembly -
and e)ebolt are as close as a couple
going steady.
One more tip, Podner. When removing
the wheels, lower both sides at the same
time. Saves a heap of strain on those cross tubes!
True, not every attack helicopter mission calls
for a wheels-on-rollout, but when it does don't FIL UP SPA(E
sandbag your Cobra Cong killer with lousy bogie WITH WASHERS
wheel latch-on.
13

AM- E0t0 MoI

PY YUMPIN' WOTAN
AY TANK SHE NEVER
REPLACE 24-OAR
LONG BOAT. YAH!

FUEL DRAIN DANDY
This little $1.26 gem saves mess-
making when )ou make the fuel con-
tamination check. Replace the twist-to-
open drain wirh a poppet type drain
plug. Like mai be an 0-1 Bird Dog fuel

REPLACE
THE TWIST. .
TO-OPEN
DRAIN...

WITH A
POPPET
TYPE
DRAIN

drain valve assembly, FSN 2915-532-
7404, P/N BJ1000AS1M. No drilling
or routing called for. Just take out ole
plug ... put in new one.
A push-to-open poppet type drain
cock keeps hands, gloves, clothes dry.
Fuel doesn't create a dangerous fire haz-
ard to person or plane, or slippery spots
if dripped on hard surfaces.
Hold on, tho, before you close the
door after adding the new drain. It's a
mite longer than the Cessna deal, so

SRLE OTF
I J^ DOOR TOP

you'll have to make a couple of passes
with a file to the top of the door. File off
a spot about one-sixteenth inch deep,
one-half inch long.
If you don't have the Bird Dog drain
valves, Cessna has a fuel drain kit, P/N
05626001-4, that comes with two fuel
drain valves and a cup to catch fuel
overflow.
Using either of these substitute drain
systems will make your fuel sample job
cleaner, safer.
5

ENGINE MOUNT HEAT SHIELD
A red hot Continental engine manifold radiates
much heat during takeoff or while full boring thru
the blue. The aft rubber engine mount-about 4
inches to port of the manifold-takes a real beating
from the heat. A simple fix cuts downtime and saves
parts. Could keep your engine from being a dropout.
Adding an asbestos backing to the shield helps a
heap.
MOUNT TAKES BEATING

HEAT SHIELD
20o IN PLACE

ATTACH SHIELD WITH
10-32 x1/ BOLT
*/ USING EXISTING HOLES .
S IN ENGINE MOUNT.

TIRE TIP
That beating the tires get on takeoff, touchdown, roll-out doesn't add up to
long tire life. When you need a replacement, try using a heavy-duty tire. You
can't do better than Cessna's 4-ply with 6-ply rated tire, P/NC-26003-0204, or
one of"these from Army supply system: FSN 2620-542-0127 (6.00x6) or FSN
2620-269-7553 (7.00x6).
Any of these tires will last longer- save you much tire changing downtime
-and they're not so likely to pop on touchdown when a heavy-handed birdman
lands the Mescalero.

WINDOW LATCH, SEAL
Pilots have to lock the window before takeoff, and some heavy-handed types
put too much muscle on the handle. Result: Broken roll pins, P'N NAS561P3-
3, chewed rubber seal, and a window handle that windmills. A cockpit full of
flying debris rakes a pilot's mind off flying for sure.
16

Make a new stainless steel striker
plate to fit over the rubber seal. Spot
weld a 3/8-in wide, 1-in long metal tab
- one end rolled up 1/2 inch to the
striker plate to keep the handle from
turning 360 degrees.
You might want to add a legend to
each window that shows which way the
handle turns: Clockwise for right win-
dow counterclockwise for left win-
dow. Arrow-shaped pressure sensitive
tape with legend written with felt-
tipped pen should do a good job.

PI/ STRIKER
/-PLATE PROTECTS
SEAL

Weld the tab to right of center on the striker plate for left-hand windows
... left of center for right-hand ones.

LEFT-HAND WINDOWS...

WELD TAB RIGHT OF CENTER

RIGHT-HAND WINDOWS...

WELD TAB LEFT OF (ENTER

Remember .you only have a manufacturer's manual on this Armybird
and these maintenance tid-bits won't show up as MWO's or TB's. Pro-type air-
craft repairmen will dig into their experiences to help them keep the new bird
airborne and mission ready.

The Mescalero is an off-the-shelf job so there won't be any TM 55-series
pubs. Hold on to the manufacturer's pubs and follow them to the letter.
Supply of parts and materials is strictly a local purchase deal with no mili-
tary specs and FSN's assigned.
Take the engine oil, for example.
The oil must meet Continental Motors Corp Spec MHS-24A. At least 9 brands
have oil that meets this spec.

k_.

F WITH A I
LITTLE PM
AND LOT5 OF
ATTENTION
YOU'LL
HAVE
LITTLE
SWEAT./

BE YOUR OWN INSPECTOR ...

MA

RT-174(), RT-175(), RT-176() P
RECEIVER-TRANSMITTER

BATTERY CASE RUNNERS
(LEGS. Bent, loose, miss-

BATTERY CABLE i
v frayed, loose.

BATTERY PLUG Pin bent,
r dirty, corroded, pull-ring
bent or missing.

BATTERY CASE (CY 744()/PRC
- Rusty, bent, corroded.

-

SPRING CLAMPS Bent,
loose, fail to make tight con-
0nection.

CASE Bent,
corroded, rusty.

ANTENNA INSULATOR Dirty,
broken, painted.

f

Li

i-

CONTROLS (tuning, volume
sQuelch, power switch) -
Binding, scraping, too loose,
fail to function.
I -

Ft
ilr

r
"~~' ~ il.- 1; 14.lrI

~ h~=h ~)
131 IP"/7~~

W

BA-279/U BATTERY

BATERY Leaking, weak,
cracked, left in set when not
in use.

TERMINAL

mutilated,

H-33()/PT HANDSET

CABLE Torn, ex.
wvre, frayed, mildew.
broken. SWITCH -
Fails to make
Contact, rubber
boot torn.

AVOID
c ) LOW HANGING
TREES.

HANDSET Dirt, moisture,
SlC cracked, broken; belt-clip
rn, missing or damaged.
ing.
ANTENNAS

AT-272(1
()/PRC (long)-Cracked, /' IPRC (shori)
rusted, corroded, loose Cracked, kinked.
nt peeling. rusted, corroded,
Loose fit, paint
peeling

20

HARNESS ST-120()/PR. LOOP'
SLIDE, SUSPENDERS belt and
shoulder), BAG CW-216l I/PR-
Dirt, moisture, torn, frayed,
mildewed.

AMPLIFIER-POWER SUPPLY -
Connectors cracked or broken,
improper fusing
MOUNTING MT.159/PRC -
Bent, warped.

ACCESSORY CASE CY.]2]l/ U
- Bent, dented.

FA~iJes^-

HARDWARE (screws, nuts,
washers) Damaged, miss-
ing.
POWER CABLE CX-2031/U -
Exposed wire, frayed, kinked.

Just a reminder: Press that push-to-talk switch on your handset only when
you're ready for conversation. Transmiting hits the battery about 10 times as
hard as receiving.
Here're some pubs you'll find helpful in keeping your Perk humming and
happy:
TM I 1-5820-292-10 (Sep 61) Changes 2, 3.
TM 11-5055 (May 54) Changes 1, 2, 3, 5, 6.
21

IT

HERE'S HOVV
'OU DO IT!

RETAINER
WPS

Be sure to insert insulating This'll keep the battery from
tape, a thin 0-ring or insulated shortin' out when the metal
Spread the retainer dips to spacer between the battery plug sleeve makes contact with the
accommodate the BA-505/U and the radio connector before positive pin of the radio re-
easily. seating the battery. ceiving set.

With the new BA-505/U battery, no sweat. It has a self-contained insulator
to prevent shorts.

Tape's a mighty sticky subject, right? 5~10tr? "?
Well, maybe not always-so sticky. Those two strips of
security-lettered pressure tape you may have stuck on the back
of your H-60/PT handset (for your TA-43/PT and TA- S
31'2/PT telephone sets) had a bad habit of getting itself gi SI
scratched off. ini
Naturally, it's no good to anybody scratched off .. so,

PETITE TEAMS' PM

FOR REAL SQUAD
S TOGETHERNESSTEAMA UP PM
O ON YOUR AN/PRT-4
S( TRANSMITTING AND AM/PRR-9
P RECEIVING SET.

It's a good idea to make sure
your PRR-9 receiver control-panel
gasket's in place between the
chassis and receiver case.
If this gasket's lost or defective,
moisture seepage could plague the
S receiver's innards. GASKE.

When you have mike miseries, take off
the transmitter microphone and dean the
microphone element (FSN 5965-995-2242) of
dirt or mud.
If the element's not clogged but faulty, get
another one put in like it says in para 5-10,
TM 11-5820-549-12 (Oct 66).

Incidentally, be careful not to hold
the antenna so close it touches your hel-
met or all your talking' will just go
to your head 'cause that grounds 'er too.

WELL, MAYBE

what you need is metal-foil decal FSN 7690-877-6865, cover-
ing the CAUTION label, and decal FSN 7690-877-6864,
covering the SECURITY WARNING.
These'll hold better.
The ready-made decals are authorized by TB 750-911-1
(Oct 67) on page 47, but your local command decides whether
you use 'em or not.

In operotin' your PRT-4, have your trans-
mitter's antenna fully extended. Otherwise,
the antenna base can be grounded to the
battery-case clamp.

DERK-47
POWER
IZZ-A-Z-Z

C 5A' AGAIN
K 5A4 AAIN! r

You say you're having capacitors
going kaput in your AN/PRC-47 radio
set when it's tied in with the AN/TRC-
90A, -90B, -129 or -132 radio terminal
set.
Don't sweat it.
You're getting the go-ahead to put
35-35 ufd capacitors (FSN 5910-954-
3038) in place of the CH-474 chassis'
C19-A/B and C20-A/B filter capacitors
(FSN 5910-889-4566). TB 750-911-3
(Apr 68) has the authority for this.
You might also keep an eye out for
this in an addition to TM 11-5820-509-
12P.
The gremlin botchin' up the C19-
A/B and C20-A/B 400 vdc capacitors
is DC surges brought on by variations

in batteries, battery chargers or vehi-
cular generator/regulator systems.
This'll destroy the filter capacitors
which in turn knock the fail-safe saver
off the Q1 and Q2 power oscillator tran-
sistors (FSN 5960-960-7315), and out
they go.
So, to save the day in your portable
Perk, the voltage rating is upped from
400 vdc to 450-525 vdc by the change
in pluck-out capacitors.

WHY SIDETRACK YOUR TRACK?
If you want to get there fastest with the mostest
. .. then take the long way around when you give TM 11-5820-519-12
your AN/TRC-90(), -129(), or -132 radio terminal
set its initial tuning control settings.
That's right. You go the whole route you
follow the book.
No shaky shortcuts like tuning the power ampli-
fier through the receiver frequency. That can burn
out the SHF pre-amplifier tunnel diode amplifier -
which spells factory-repair down time.
Just stick with all the steps it shows in para 125
(a and b), Page 83, TM 11-5820-519-12 (Jun 64), I
and be sure you double-heed the warning about not AN/T -9O
tuning either receiver converter preselector to within
100 mc of the selected transmission frequency. GO BY THE BOOK

SNUT NIPS
T' KNOCKING

JUST
ORDER A
S NEW ONE VIA
FSN 5935-
) 760-3219

A bent, banged or botched-up antenna connector is like a vehicle with a leaky
gas tank 'cause you can't get much mileage out of either of 'em.
Like, f'rinstance, the J301 connector on your RT-246 or -524 receiver-trans-
mitter when it gets kicked or knocked, leaving it looking like it had been attacked
by a mad alligator.
Your best bet's to protect it with a 3/4-in retainer bushing nut (FSN 5935-
760-3219). You'll find it on Page 6 in Change 5 to TM 11-5820-401-20 (Dec 61).
0' course, you have to make sure the nut's set so the CG-1773/U radio fre-
quency cable assembly's UG-913/U connector clears it.
When putting on this protector-type nut and you find it won't work right,
just ream 'er with a reamer or sharp knife. If this doesn't do the job, get another
nut.

SHINE ON...AND, ON ...AND ON

keeping the light on the subject is must when it
. .th0 you iNf/VSS-1 Xenon searchlig ht .. .
-'.-;:* t's why iteks.mighcy important the rubber gaskets
:and seals ar up to nuff,... nor cracked, p~illd loose OC6

Like, when you re eyeing for tr&ible during PM
period yon should take a good look at the rubber silicone SEAUNG
sealing comi'pound in the lamp housing assembly. COMPOUND
If the compound has given up to that'Xenon lamp's
hot heat, get 'cr to your support maintenance for an up-
lifting with an upgraded sealing compound (FSN 8040-
941-9984).
This'll keep that lamp in the pink and off the blink.
25

YAWN! HEY, LEIF...
VEN YEW LAST CHECK
ANTI-INTRUSION
ALARM ?

KEEPS YOU FROM HARM
Have you ever wound and set your alarm clock, but were late anyway 'cause
you forgot to test the dinger to see if it was dinging?
So you were late to the job and got a chewin' or a dockin' .
If you'd been so casual with your AN/GSS-9 anti-intrusion alarm set you
might not even get a chance to wake up late... you might not even wake up.
If you haven't done it already your best bet's to get a safe-check equipment
decal and put it on the GSS-9.

NO sWEAT GETTING
DECALS... ALL UNIT
WITH ALARM SETS ce
ARE ISSUED SomeE/ C.:".

R-dc bcn

Be sure to push out air pockets between box and decal.
Replace alarm box cover.
Most important thing about the decal is to follow the safe-
check steps down to the last word. 'Cause that somebody
you'ree alerting might be you.
26

If iou want to ktrp stnsiri-e infor
mation away from unauthorized ear-
drums, you'll appreciate the off-hook
security lamp (FSN 5805-789-3843) for
the TA-43/PT and TA-312/PT tele-
phone sets. a

HANG AP NU OUR
PHONE 61.1
This lamp'll be a shining wonder in
letting you know when the transmitter
is open and transmitting.
Remove the panel screw next to the
hook-switch end of the retaining cradle.
Use the panel screw to buckle down
the lamp assembly. LAMP

BATTERY POSTS
Run the 2 leads from the lamp as-
sembly around the cradle to the BAT
binding posts and secure 'em.

SON WITH EASE

Puttin' an audio connector on your Remember to
AN/VRC-12 series or AN/PRC-25 'Cause a little g
series radio set can be aggravatin' when gucking it on
the connector's O-ring is hard or dry. catcher.
Yep! But, before you spit on 'er By wetting t
to make the U-182/U or U-229/U con- using the compote
nector slip on easier, give a look. for the connector
Squeeze a little silicone compound your common eql
(FSN 5970-159-1598) out on your fin- mates and freeze
gers, thin it by rubbing your fingers to-
gether, then rub it on the O-ring.
While you're at it rub it around the
connector on the RT-246, -524, or -505
receiver-transmitter.
This'll keep the O-ring or moisture
seal from rolling out of the cable con-
nector.

keep the coat light.
goes a long way, and
will build up a dust

he O-ring instead of
nd, there is a tendency
to corrode or short out
uipment in warm cli-
up in cold ones.
SILICONE
COMPOUND
HERE...
AND HERE
h.-,

MIRt

'tP7ARtr
L qu -10 'Z_ "

This a elected E of ncar peub
al In.lfm ro orwidoealaill amaled
manc perionlel Th. ad I. camonphd
ron recent AG Ddbnicrao Cnlrn
Bulletins. For rampf defdh s DA
Pa. ,l14. CT 5 0Feb 68), rMs, TyIr
r;.. DA Pm 310-6, Ch 3 (Apr 68), SC
and SMl; DA pa. 310-7 (Ap 68).
MWO's
TECHNICAL MANUALS
IM 3-4240-269-12. Apr. XM21E4 rol
Cotrnol Agent MImk.
TM 5-1450-203-20P, Mor, Pnering
TM 5-2410-229-12, Apr. Aid
Droppable hFull Trd DED Tractor
TM 5-4431-208-15 CI May. Welding
q.ulp
TM 5-2431-219-15 CI. May. Welding
Equip flo Welding SlI AIRC
TM 5-3105-211-10 CI. May. Gaders.
IM 5-3105-244-2S. Apr. DED 41l 20
Ion Dump Trea.
TM 5-4110-221-25P, Apr. 5,000 BTU
Cap Panel lypa field Po.lnhbl Mach
ILing Urll.
TM 5-4120-212-15 Cl. May. 36.000
BTU Skid Mid Air Condlione"r.
TM 5-4120-232-15 Apr. Hork Air
Cooadlioer.
TM -41120-234-1 CI, May. 36.000
BTU Skid Mid Alr Condiloaenr
TM 5-421D-200-25P, Ap. Fin r ghling
Truck.
IM 5-4110-202 20 C7, May., ire
Fghling Equlpmenr Trck.
TM 5-4310-205-25P. Apr. A.
Cnmpramori 80 CFM.
TM 54310-206-10 C1, May. Al
CGopraeslr 600 CIM
IM 5-4310-216-15 C4. May. Ali
Coapresorn 5 CIM
IM 5-4310-727-25P CI. May. I1
CFM Air Compralson.
TM 5-6115-345-?1, Apr. DED Gen Sel
IS KW 60 Cyc.
TM 5-6111-424-12. Mar. Gen Sen
Eng Dn 6 60 K" 6Cyc.
IM -611S-421-15. May, 100 KW Dil
Eng Ga. Ilr
IM S- 611 -4 0-15 Mae. Gen Sar Eng
Div 10 IDW 400 C .
IM 5-6675-20-1 S CS. May, Mapping
and Survying Equip.
TM 9-1005-162-15. Feb. XM123
XM24, X541 Aramner. Sulbsysell.
IM 9-1410-375-12P/1. Apr, FPrhing
TM 9-1430-250-15P'8/ and
ISP/12. May Nike.Hrc.
TM 9-1430-250-1P/9/1, ApI. Nike

TM 9-1440-250-15P/l/1l. May. Nkle.
Her.

TM 11-5895-463-15, Apr. AN/
MSC-31A Operaolon Center
Communications.
TM 11-5895-550-12, Mar, AN/
TRC-146 Radio Set.
TM 11-598S-295-15, Apr, Extended
Range Antenna Kit Anltenna Group
OE-IS/TRC-24.
TM 11-6625-200-15, Mar,
ME-26d )/U Mullimeltrs.
TM 11-6625-801-15, Mar, RO-189/G
Oscillograph.
TM 11-6625-1635-12, Mar,
MK-1004/ARC Maint Kit Electron
Equip.
TM 11-6625-1676-15, May. Mdl
175A Oicilliacope.
TM 55-2320-211-10-1, Apr. M51
M51A2 5-Ion Dump Truck.

TM ESC'S
TM 5-4600-200-ES C1, Apr. Water
Purilcaloion Unit.
TM 5-6100-201-ESC, Apr. Eng Driven
5 KW 60 Cyc Gen Set>.
TM 9-2300-216-ESC/1 Cl, Mar. M 10
Howitoer.
TM 9-2300-257-ESC/1, Apr. M113A1
Corrier.
TM 9-2300-257-ESC/2, Apr, M577A1
Command Post.
TM 9-2300-257-ESC/3, Apr, M107/
M107A1 Morlor Carriers.
TM 9-2300-257-ESC/4, Apr,
MI32Al Flame Thrownr.
TM 9-2320-208-ESC/1 Cl, Apr.
M38A1 I-ton Truck.
TM 9-2320-208-ESC/2 C1, Apr,
M38A1C M38AID 1-ton Truck.
TM 9-2320-208-ESC/3 C1, Apr, M170
'-lton Ambulonce.
TM 9-2320-209-ESC/1 Cl, Mar, M34
M35 M36 M36C 2-teon Truck.
TM 9-2320-209-E5C/3 Cl. Mar, M49
M49C 2h-ton Tank Truck.
TM 9-2320-209-ESC/5 C1, Mor,
Repair Shop Trk Mid 2% Ton M185
MI185A Von Expansiblt M292 Van
M109 109A1.
TM 9-2320-209-ESC/9 Cl, Mar,
M49AIC 2'1-ton Tonk Truck.
TM 9-2320-209-ESC/1 C1, May,
MIO9A1 2% Ton Repair Shop and
M292A1 2% Ton Expansible Van.
TM 9-2320-211-ESC/2 C1, Mar, M62
M543 S-ion Wrecker.
TM 9-2320-212-ESC C2, Apr,
M37/M37B1 14-ton Truck.
TM 9-2320-212-ESC/1 Cl, May, M43
M43B1 '-ton Ambulance.
TM 9-2320-218-ESC C1, Mar, M151/
MI 1Al U-ton Truck.

LUBRICATION OIDIRS
LO 5-2410-229-12-1. Mar. DED full
Tracked Trarclr Calerplllar Mdl Dal
WIEng Colerpillar Mdl D333
LO 5-3105-224-12, Apr. To.ed Earth
Moving Scrape
10 5-8IO05-29-12.1 and -2, Apr.
DID Scoop Type IoadeI Aiii-Chalmer.
Mdl 643M / lll Cnalmter Eng Mdl
3500.
LO .310S-243-12.1I cd -2. Apr.
DED Scoop ype Loade 10.500 Lb Cap
Earnn Yale & Taon rolan Mdl 3000M
a/Eng Cummiln Mdl C.160 CI.
LO 5-310S1-45.12.1 and -2. Mar.
DED 4 Wheel Scoop Type Loader ArII.
Ch:alers Mdl TL-6AS wEingine Alns-.
Chalmter Mal 1200
LO 5-31J0-206-12-3 -4 and .5, Mar.
Crane.Shorl 40 Ton Crawler Mid
Bosi Unll Harmlnlschege Mdl 85590
LO 5-3810-29.-12-1, May. 12% Ton
Cooler Mid DD rane.-Shoval
LO 9-2220224.12 C3. May.
M114 'M 14A Carrier.
LO 9-2350-201-12 C1, May Serile
lanki
LO 55-1930-205-12-1. May. Lighler
Amphib IiARK V SP Diesel
LO 15-1930-205-12-2. May. Lighle,
Amphil ILARC V

MODIFICATION WORK ORDERS
9-1005-219-30/3 C1, May. M48A3
lanL.
9-1100-200-20/3. May. honels John
9-2300.216-0/17. May. Inslal ol
Imp Eng and rransmlssion Deal
M107 Gun MI IO Ho,,rIe
9-2300-16-30/20. May. Replacimenl
ol Eleoaling Dire Column MI07 Gun '
Ml 1D Howrler
9.7300-216-40/2, Ma. Inslollallon
ol Spade SIru RleloircIng Bai MI07
GODn MPl 0 Hoaill
9.2300-216-40/3. May. Rlplacemenl
el T.rral .Bup Blocks M107 Gun
M 110 Ho-lur

MISCELLANEOUS
SC 1375-94.CL-P02, Apr. Demollllon
Equlp Sel
SC 51R0-97-CL-127, Apr. Welders Tool
Kin.
SC 5180-99-CL-AOI, sp,. Aniarll
Mechanlc 5 Genelral Teo KI
rT 9.1430-254-12 2, Mar. Hipal Sys
Iroubleshoollng Indicalor Ip Nike.
harp Air Defense Gulled .A'iit SIy
and Nile Heas Anti Tallcal RBllitisc
Mti Sys
TB 11-6661 204.r Mal, TS.714
Radiac Colibrolor.

THE
COMMUNICATOR I -

SMAN,
WOT A HANG-
UP... THEIR
COMMON NET'S
DOWN AND THEY
GOT ME ON
COURIER DETAIL
ROUND- THE-
6 CLOCK.

r I THOUGHT
YOU CARRIER
PIGEONS WENT
OUT WITH WORLP
WAR I !

Y

THIS IS rTGER
ONE HOW DC
I OU HEAR ME

, 7

I WAS DOIN' FINE HOW GUYS BEGAN GOOFIN-OFF ON
IN RETIREMENT CUM AIR FILTERS... PAYING' LITTLE
WHEN THEY ET OR NO ATTENTION To'EM!

Y'SEE, FILTERS TsK!TSK! BUT WHEN THEY GET
ARE EASY TO CLO&6EP HEAT BUILSP
OVER-LOOK 'CAUSE UP IISIPE THE EQUIPMENT
THEY JUST SET ... WHICH I9 WHAT HAPPENED
THEREQUIETLY HERE .. HEAT BURNT OUT
EBREATHIN'! VFIT PARTS AND..,
AREES TNO COMMO...

SO, NOW THEY, U SAY, MAYBE E'OU .THI
GOT ME SHUTTLIN' BACK OUGHTA TELL CONNIE IS
'N' FORTH... WHEW, THE ROPD ABOUT IT. TIGAN
WAY CHARLIE'S ANTIAIRCRAFT'S ONE,
BEEN GOIN.. Io AIN'T COME
GONNA LAST 'TILL MY IN TOP
REPLACEMENT GETS CAT!
HERE.A!

3.

R-E-A L-L- y?
L-7?

Your electronic and radio gear
SNeeds air to send-and-to hear:
S' l B Keep their filters quite clean
MY Free of dirt in their screen.
TU1BRES Keep 'em cool--and LIou've
BURNIN' nothing to fear!
OUT...

IF YOU WANT TO DISPLAYTHIS CENTERPIECE ON YOUR BULLETIN BOARD, OPEN STAPLES, LIFT IT OUT AND PN IT UP.

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

CLEANING SHOULD BE PERIODIC
DEPENDING ON EQUIPMENT... LIKE- WAPPYA MEAN
DAILY, WEEKLY OR HOURLY... CON ENVIRONMENT ?
AIRCRAFT IT'S LIKE, EVERY 100 OR
200 HOURS) OR AS ITS
ENVIRONMENT DICTATES!

LIKE. IF IT'S YERY HOT, CLOSE IN, BOYS AND I 'LL
DUSTY OR EXTRA WET DEMONSTRATE...
AND MUDDY YOU CLEAN
AIR FILTERS MORE OFTEN
THAN THE TM SAYS!

~~VVL O I Il~y Yln
~---"c

EASY OR THE WIRE.. NO
ROUGH SCRUBBING.. JUST
SOAK 'EM LONG ENOUGH TO
LOOSEN PIRT..SLOSH 'EM
AROUND A BIT!

MP SOON YOU MEAN MY
REPLACEMENT'5 YEAH,
COME ? YOU BEEN
EVERYTHING'S REPLACE
GUNG HO AGAIN, BY CLEAN
CONNIE! AIR
FILTERS.

HEY WHERE ON R-R...
YOU GOIN, PIGEON? I'M A VERY
SHORT- TIMER
NOW.'!

LAZY FOX
THIS IS TIGER
ONE-- HOW 00
YOU HEAR ME,
OVER? 'N
CLEAR!

36

LOCK, # E
STOCK Twa
YA! THINGS ,
AND LIKE THIS MAHE
ME SEE REP! ,
BUTT ...
Ever hear of an M60 machine gun butt stock falling off? It can happen if
you don't put it on right in the first place.
That means lining up the guide grooves in the stock with the receiver
guide rails and then pushing forward until the stock seats itself. And you
know the stock is seated when you hear
a click that tells you the butt stock latch
has gone in the groove on the buffer
assembly cap.
To make sure the stock's locked, give
it a yank or two. Could save you a blush
and bill or three later on. X .i

B '^'^' 4-WMM glwde iht'her e` -tll *irflook-
i^ge142 5: I SA Catalog (O&c)or'
^/e^^' o IedCalt-e8000-IL-A (1 J 68).
SFN 8010-61.-9143 is correct for a. -pt
Spray can ... MIL-E-5556B. Other stock
numbers: FSN 8010-687-3636, I-qt can;
FSN 8010-597-7859, 1-gal can; FSN 8010-
664-7656, 5-gal can. The IL lists all but the
.5-gal can.

FOR SEA ONLY...
LSA FOR M79? SURE...!

Sure, your M79 grenade launcher BEAR
normally gets PL Special as a regular GREASE,
lube but if it's more convenient to use SEA OIL,
LSA (Lube oil, semi-fluid, MIL-L- FISH WAX...
46000A. go right ahead and use it. CHICKEN FAT
But. remember this: Use LSA onl AND...
nhcre .ou'd use PL Special and use it ,
exactly the same was. following the ,/
poop in paras 31 and 32 of TM 9-1010- l
205-12 (Fcb 61i with changes.
LSA comes in hands sizes, including ,
2.oz (FSN 9150-935-659"' and --oz
(FSN 9150.589.35221 plastic bottles.

THREE TIMELY

GET THE PICTURE?

INITIAL AUNEMENT

RIGHT DISPLACEMENT

COME CLEAN... AND
UNDAMAGED

HE'S TRYING TO THE ARMORER
SPOUNP OUT A AND HE GOT
JAMMED CLEANING INTO A HASSLE
ROD IN HIG OVER HOW TO
M...!! Y EXTRACT IT!

AW ^do

To head off this embarrassing situation, always clean the bore the way it says
in TM 9-1005-223-20 (May 67) and FM 23-8 (May 65). And that includes using
the right swabs the 2-1/2-in square jobs listed in the TM.
39

LEFT DISPLACEMENT I

THE "BASEBALL" GRENADES
Hold 'em right. Toss 'er right. Carry 'em right.
That's vital safety SOP for handling the M25A1 and the M25A2 "baseball"
grenades.
Spelled out the safety scoop reads like this:

SURE-FIRE AMMO GAGE
Dear Editor, f
We find the best and simplest gage for detecting faulty rounds to keep 'em from
gagging up our M21 subsystem's machine guns is the ammo box tray cover itself.
You have to take it off anyway for loading, so why not put it to use?
The way we do it, one man holds the cover upside down and the other pulls the
linked ammo through. Any round that's too long won't go through. And, if you don't
pull the ammo through too fast, you can easily spot rounds that're too dirty or gritty.
CPT Harold B. Smith
TAKE OFF C Trp, 17th Air Cav
COVeR

(Ed Note Good! It's always there when you need it, too!)
40

GI DRIVER INSURANCE

No matter what size truck you pilot
where the action is-any where from
a 1/4-ton M151 to a 10-ton M123-
make sure it's equipped with a bracket
to hold your (and your side-kick's)
M16A1 or M14 rifles.
If you jockey one of those new 1-1/4-
ton M715's or M725's, no sweat.
They come equipped with a single rifle
bracket mounted on the left side of the
panel behind the driver's seat.
But, on all other trucks, you install

VEHICLE
RIFLE
HOLDERS

a pair of brackets right up front. The
M151 gets one to the left of the driver
and the other to the right of the passen-
ger. The others get 2 located just to the
right of the driver.
Anyway, the item you want goes
by the moniker: Kit, Mounting, Rifle
Bracket, and answers to FSN 2590-045-
9611. The bracket will handle either
the M16A1 or the M14, though you
may have to do a little maneuvering to
get the M16 to fit the way you want it.

Here's where to look for installation and parts poop for the various vehicles:
TB 9-2300-209-20 ( Feb 67) for 3/4-, 2-1/2-, 5- and 10-ton trucks.
TM 9-2320-218-20 (Apr 63) with Change 2 (Nov 65) and Change 3 (Jan
66) for the M151 1/4-tonners.

GROUND /4-TON IRUCK -
OBILITY PICKING' A PART HOW DO
'YOU GET
NEW UPR\GWTS
IN THI5
OUTFIT?

It could happen. Your G741-series 3/4-ton cargo truck could sideswipe a
tree. Some of those metal uprights for the cab and cargo body paulins could be
mangled beyond repair. How do you get new ones?
Take Item 5 on page 72 in TM 9-
2320-212-20P (Feb 60). It's support,
w/plate, reinforcements and retainer,
FSN 2510-700-5406. The arrow for 5
in Figure 61 should point to the right REAR CAB
rear of the cab. SUPPORT
If you need the left rear cab support,
it's FSN 2510-700-5405-in Fed Cat
C-2510-IL-A (Apr68).

Left front, FSN 2510-734.7505 Right front, FSN 2510 734-7504 / METAL
n F------ UPRIGHTS
in Fed Cat C2510-IL-A (Apr 68) ON THE

r ~TOO MUCH OIL
If you try to squeeze a whole quart
of oil in the winch drum and shaft case
of your 3/4-ton truck you may have
too much.
The oil will run into the drum and
leak out where the cable end goes in,
making you think you've got a bad leak.
But you'lll get exactly the right
amount in hbi king the plug out of
rhe check holc first and then pouring
l in the fill hole until it starts to run
our the chetk hole.
The % inch & orm case will take about
a quart, but use the check hole there too.

4-TON TRUCK PART

Ne.w better brackcrs for front lifting
shackl-, on sour G'-l-scrles 3/-i4on
truck %ou need 'em if \our truck a3%
made in 1962 or before. Bracket. FSN
2510-9"3-4188. replaces Bracket. FSN
2510-'"0-5"9. rhat's in TM 9-2320(
212-2iP (Feb 600. Make sure \ou'se
got the heavier new job.
Here's some differences (old in pa.
rentheses): cast steel (cast iron); base
thickness, 1/2 inch (3/8 inch); from
center of mounting hole to outer edge.
5/8 inch (1/2 inch); overall width.
5-1/4 inches (5 inches).

t^^

M38A1 1/4-TON TRUCK...

RJNG-A-DJNG MUFFLER

S 1 1 niber and the
e raskingre the serial nut er 4

Note 9 i n LO 9-2320-218-12 (Nov 66) referies 14- o
Maybe personnel" seri you enne'
Seationl mntnn. ord-built Nehi c
truck? Yes aod no. ~dgiastl.ion number te same.
the seria umber M1 has a registration

aiser- P -rentrom te serial ,nbe
number d X e leu,

VENT VALVE SERVICE
Note 9 in LO 9-2320-218-12 (Nov 66) refers
to "ordnance personnel" servicing your engine's
crankcase ventilator metering valve. Surprise!
Surprise! That means you! It's a job for organ- V
izational maintenance. 'ET
TM 9-2320-218-20 (Apr 63) gives you all VALVE
the dope on servicing the metering valve. This
goes for the M151 1/4-ton truck and all other
members of the G838-series family.

CUT I1 HER ...
... TO AVOID
THIS BANGING
Nope, your tailpipe's not supposed to tickle your right rear lifting shackle.
If you get a ringing noise when cruisin' along in your M38A1 1/4-ton truck,
that's probably the trouble. The problem's with the muffler there's a batch
of 'em that've got the front flange out o' kilter.
If you've got a ring-a-ding muffler that's in good shape otherwise, you can
rework it so the tailpipe will be turned down away from the lifting shackle.
Just hacksaw the front flange from the muffler pipe. Give the flange piece
about a 30-degree turn counterclockwise. Tack weld it back on. Now hook the
muffler and tailpipe back on the exhaust pipe. If the tailpipe clears the lifting
shackle, finish the welding job.
30

WELDING TM "
The new TM 9-237 (Nov 67), Operator's Manual Welding Theory and Appli-
cation, is loaded with step-by-step welding instructions, scoop on welding equip-
meit, provides a trouble shooting chart, and supply info on welding materials.

M416 1/4-TON TRAILER...

(w ) FITTINGS AWOL?

Zerk fittings on some M416 1/4-ton
trailer spring shackle bushings are
pressed from the outside in. If you use
a high-pressure grease gun on 'em, they
may pop out. So use a low-pressure OUTSIDE FLANGE INSIDE FLANGE
grease gun instead.
But if you do pop one of these fit-
tings, replace it with one that's pressed -al p
from the inside out. It's got a flange on
the inside end.
REPLACE
There's no FSN for it yet, so you WITHR
order it from USATACOM under Part / FITTING
No. 127762 (ML21.110). Use an "ex- / / HAVING
ception data" type request. RIC is B24. / ANGE
DIC for overseas is A05 for CONUS / ON INSIDE
it's AOE. Write your justification on END. I
the back of your order card. __

M274AI'S DIFFERENT...
SO'S HOs1

Differences between the M274 and M274A1 1/2-ton trucks include the air
cleaner-to-carburetor hose. Hose, Preformed, FSN 2910-678-4661, in TM 9-
2320-213-20P (Aug 63) is for the M274 only. The M274A1 uses FSN 2940-999-
6391.

U-JOINT PARTS.KIT... 2/2-TON WE DON'T HAVE
A KIT FOR IT!/

FOR TURNING "
SHARP CURVES.

You can't get a universal-joint parts kit to repair the
transfer-to-forward-rear-axle prop-shaft and transmis-
sion-to-transfer on your M35A2 2-1/2-ton multifuel
truck. You can't if your vehicle comes under Contract
No. DA-20-113-AMC-07241 (T) and has a USA number
in this series: 4J5353-9998, 4K0001-4199, 4L4424-9999
or 4M0001-4610.
Seems that these trucks have oddball universal joints
on these shafts they have an internal snap-ring to hold
the journal in place. Parts Kit FSN 2520-752-1960 listed
on page 110 of TM 9-2320-209-20P (Jan 65) won't
match the parts.
So ... if you need U-Joint parts--and until a repair
kit comes on the scene ask for the entire prop-shaft,
FSN 2520-752-1013, which is also on page 110 of the
-20P.
The universal-joint parts kit now in the -20P will work
with all other M35A2's, plus the replacement prop-shaft.
The U-joints for these have external snap-rings or a cover
plate with two cap screws. z k

NOT SO
UNIVERSAL

U-JOINT FOR
TRANSMISSION TO TRANSFER
* i"""i^"fl^Mf""""""a" i

NEW OUTSIDE MIRROR

Now an 8-1/2x5-1/2-in rectangular I I
mirror for the 2-1/2-ton truck comes
when you order that Mirror Assy, rear
view, FSN 2540-952-7035, listed on
page 252 in TM 9-2320-209-20P (Jan
65). not the round-type pictured
there. (Fed Cat C2540-ML-A (Jul 67)
shows FSN 2540-840-0022 supersedes
the FSN listed in the -20P for this
mirror.)
You can get the mirror, 2 arms and
mounting hardware all under FSN 6
2540-832-7336. This FSN's not yet in
the -20P, but it is in Fed Cat C2540-IL- muin
A (Jan 68). This mirror setup will go on ( -IB
either the right or left side of your
truck.

ANTI-FRACTURE RECIPE
Wet weather, boots slick with oil, water or mud make
a tricky walkway surface on your equipment that's the
recipe for a pain.
It gives with cracked elbows, skinned knees, and rear-
area bruises. Here's a new paint to cut down such
casualries... FLASH...
JUST
OUT TO CUT
N 5 ges DOWN SLIPPING
S .. ON SLICK SPOTS
SglFlight Deck
Compound,
nonslip,
Stype 2,
This stuff is oil resistant. MIL-D-23003.
FSN 5610-"82-5556 gets a gallon of OD.
FSN 5610-857-2450 gets a gallon of white.
Your supply people can get the OD paint thru regular
MILSTRIP supply procedure, using routing identifier
code (RIC) B24. White is available using S9C.
48

I'M WORRIED ABOUT BE
THE POSITION OF THE SURE TlE
TORSION BARS ON ARROW
MY A1113/M 3AI IN
M M3/MIIYAI OFTHE RIGHT
S VEHICLES. POSITION!

---- -----

Well, your worries are over, whether your particular vehicle belongs to the
gas or diesel side of the family.
Notes on both page 199 of your TM 9-2300-224-20 (Dec 61) and on page 201
of Cb 2 to your TM 9-2300-224-20/2/1 (Nov 64) tell you to position the bars
on both sides so the arrow on the outboard end of each torsion bar is...

AT THE TOP OF THE BAR AND POINTING
TOWARD THE FRONT Of THE VEHICLE /
WMFN vnnAl CTART S a LJOIWFlFR.

This is the way it should be when you start. However, before you can push
the bar into the torsion bar anchor, the blind splines in the inboard end of the
bar have to be lined up with the blind splines in the torsion bar anchor.
When you move the bar around to line up the splines the arrow may not wind
up at the top and pointing toward the front of the vehicle. When you finally seat
the bar in the torsion bar anchor, the arrow may be in any position around the
circle, (even at the bottom and pointing toward the rear of the vehicle). Mox nix!
There is just one other thing that might foul you up. Page 168 of TM 9-2300-
224-20P/3 PART ONE has the torsion bars for all members of the MI 13/
Ml 13A family except the XM474E2 missile carrier. The bars for it are listed
on page 502 PART FIVE of the same manual. Make sure you order your tor-
sion bars from the right manual and the right part of the manual.
Cl 1
iI '9

EPM HELP FOR OFFICE MA
SUCCESS.. F v -~ O

INm$

So you ne'er figured maintenance on
lhat adding machine. rypen rirer, calcu-
lator or such did much for combat readi-
ness, eh?
You've got the wrong elevation and
the w wrong target there, friend. Records
and supply won't work with a string of
misprints and mistakes. Clear print and
straight figures are hat fighting outirs
have to have, right?
Right. So %our set of kes has to sta.
in shape. Here's hovw.
CLEANING
ROLLER Wipe dean with a soft, damp
doth. If your typewriter platen Ithe big roller
for the paper) comes out easily, remove it.
then wipe and replace Take out no toilers and
remove no knobs on adding or calculating
machines

CARRIAGE A dry brush to remove dust
and a soft cloth to clean rolls and rails are all
you need. Use no oil.

7 Q- d

RIBBONS AND CARBON STRIPS

c e r o i wl k s t e w s r d b

~"*)'cs-t* m

SPECIAL PURPOSE MACHINES

On duplicators, spirit-printers, mimeographs and so on, watch:

ELECTRIC DRIVES If you are lucky enough to have power-
driven machines, remember electricity can be dangerous. Keep
eyes open for frayed wire, broken plugs, and cords kinked or
tangled. Turn off switches when you leave.
l -% .. A

_____.- .Typewriter carriages
DAILY CARE- aren't handles. The right
Hammering keyboards way to carry a typewriter
and jerking knobs and is with both hands, under i O-
levers will destroy office the bottom, between the E -i
machines. front and rear feet.

( souDo Y -- I

READING MATTER Happy Hunting
If you're stuck for parts or maintenance TM's and DA with those
Pam 310-4 lists none, there may be a way out. To get front fingers.
a m TM 10-7400-
manufacturers' pubs, send a request- giving make, 201-10 (Apr64)
serial number, model, and FSN of machine to U.S. gives you
Army Mobility Equipment Command, 4300 Goodfellow good dope.
Boulevard, St. Louis, Mo. 63120. Mark the request
ATTN: AMSME-STL-E.
53 Q.
END

CiAIILUPr~K
:E t~i z
n i-%6L111
'\ I y ^^^B-^R B ^^&^

Then you take loose the 4 wing nuts
on the midsection. That lets you take
down the primary element or stage

careful it s heavy, and you don
want to drop it and damage the bottom
cones. It'll likely be dirty, too
Now you're ready for the sleight of
hand Out of sight up behind the flange
are 3 more wing nuts, and standing
by the filter without ever looking under,
you might never see them.

You can quit squinting at that brass
plate on your Model 12 Caterpillar
Grader trying to read air firer cleaning
instructions. There'll be new word our
as soon as the pubs can be changed ...
and like you probably know, the dope
is not in the LO or TM 5-3805-209-15
anyway.
But what could set you up is the
whole new recipe including time-
table.
For that, you watch the clock and the
calendar. The primary filter element
gets cleaned every 125 hours ordinarily,
quarterly at least, and lots oftener in
rough going. Check?
Then the secondary filter element
gets cleaned every 1000 hours, or
changed once a year. Got that?
Sounds simple, but there's a trick or
two you need to know.

w A

Like you'd suspect, you take off those
2 bottom wing nuts and drop down the
catch tray. If there's more than a hand.
ful or so of dirt there, you've waited
plenty long enough.

I VE
WAITED
LONG
ENOUGH! H

NUTS
/tYOUT DON'T NEED TC
TAKE THE WHOLE FILTE
BOPY OFF TO FINISH
THE JOB... )

Just take off the 3 wing
nuls, put 'em where you can find 'em
again, and the secondary element will
come right out with almost no coaxing.

P
3%'

THE REST IS EASY
From then on, no sweat, the air hose 6 or 8 inches away, get it
If you found a coat of dust over that good all around, in and out, and then
top filter element, you may be able to turn it over. Blow it off good upside
blow it off with compressed air. Hold down.
USE COMPRESSED AIR As long as you have the primary ele.
,f ament off, give that a good airing our.
too. Then clean out, and wipe out, the
catch tray or bottom cup and the case
that's bolted to the engine air intake.
Make sure you don't leave lint or strings
loose in the case.
IN HEAVY DIRT
If you've been working in heavy dirt and the elements are badly choked,
you may need to wash them out instead of using air.

DON'T BANG IT TO DON'T PUT IT BACK AND WATCH OUT
SHAKE DIRT LOOSE.. TO WORK SOGGY OR... FOR THOSE CONES.

Four wash-out jobs is about all that top element can stand. And if it gets rust
and guck-loaded, change it anyway. Just let nobody ever put oil in that catch
tray, or cup. And no benzine, gasoline, or dry-cleaning solvent on those cores:
who wants a fire on his hands?

REPORT

CHANGE A

Dear Half-Mast,
Our construction unit has scads of equipment items that are commercial models-
but still reportable under TM 38-750.
Problems pop up when recording replacement of parts and components on mainte-
nance records for these. Some of the parts and components don't have FSN's. Some
don't even have serial or part numbers.
How should these be recorded on DA 2408-3 or DA 2407?

SP6 B. T. E.

Dear Specialist B. T. E.,
Every part or component replacement (except common hardware) must be
recorded.
If there's no FSN, enter part number or part serial number in the FSN space
on the DA 2408-3 or DA 2407.
Even if there's no number at all, enter the noun nomenclature of the item
replaced-to let the NMP know what parts or components are wearing out,
breaking or otherwise going to pot. Then enter "UNK" in the FSN space on
these forms. 7 /

Mi 11, Typ Iin theI .
M, l- 1 0i".b; ~,....O.,. ... "-'_ -.

surge tankand-reservoir and expansion
cank, and you'll need 232 gallons.
You can get a 55-gallon container by
asking for Lubricating Oil, Aircraft Pis-
ton Engine, FSN 9150-965-2305, and TM 5-3895-264-15 (Sep 65) covers
FSN 9150-965-2303 will get you a 5- your Hopkins hot oil hearer and asphalt
gallonbcoh.tainr. melter.

BAG, TOOL, SAICHEL: cotton duck

BLADE, HAND HACKSAW: 12-in Ig

I i 12 ]
CHISEL, COLD. HAND: -in width of cut

E, HAND half round,in Ig
FILE, HAND: half round, 8-in Ig

FILE, HAND: round, 12-in Ig

^^ ^

FRAME, HAND, HACKSAW: adjustable:
10, 12-in blade Ig

HAMMER, HAND: carpenters 1-lb

HANDLE, FILE, WOOD: 4-V-in Ig

I I' 2 i
INDICATOR, LINE, VOLTAGE: general
purpose (Mil-1-16105, Type A,
Part 61-007)

~-

INSULATION TAPE, ELECTRICAL: SCREWDRIVER flat lip, blade 3-in Ig
%-in wide

KNIFE, POCKET: 2-9/16-in blade Ig

^-----------
PLIERS, SLIP JOINT: 6-in size

RULE, MULTIPLE FOLDING: 72-in Ig

SCREWDRIVER: flat lip, blade 6-in Ig

WRENCH, OPEN END ADJUSTABLE:
8-in Ig

WRENCH, PIPE: 10-in Ig

I FSE 665-84024l

I

1

le

a ,l'^^mml

i

I

1

I

I I .::

Your M2 burner unit, FSN 7310-842-9247, can do a first rate job of cooking ,
whether it's used in the M1937 or the M59 cabinet. But you should always
heed these safety precautions when you're using it.

Take the burner out of the mess hall or tent
when you're going to refuel. Make sure there's
metal-to-metal contact between the nozzle on
the fuel container and the fuel tank to head
off static electricity.

Always be sure the burner is turned off and
cool before you refill the tank. NO SMOKING
means just that when you're filling the fuel
tank. And make sure there's no fuel or other
inflammable material on or near the burner
unit.
Wipe up spilled gasoline pronto. Keep the
fuel tank and fuel container caps tight at all
times. Never store the fuel containers near
heat or open flame.

wBHHI1

W ?FwyJA mr wwwrla
You always pressure Ihe fuel lank with the inflaling pump. FSN 4320 85? 9036 that
comes with your ac(,:r.ory outfit and don't, lke NEVER, substitute Ihe air hoie liram a truck
You pump until Ihe prersuir gage shows from 10 to 20 PSI Ihola Ihe latlrl word ip IM 10.
7360 204.12 IFeb 681

LIKE THIS..

If the pressure goes into the red area on the
gage when the unit's burning, turn the flame
down about half what it was, and keep an
eye on it. If it stays in the red area, shut the
unit down and let it cool.
Never release any air pressure while the
burner is lighted or while the unit is still hot.

Your generator should operate 450 to 500 hours, depending upon the grades of fuel you use.
When you replace the generator, always inspect the replacement for cracks or any type of
defects. Never bend the tubes or force the generator into position.
When you're operating your burner unit, make sure there's plenty ventilation so you won't be
overcome with carbon monoxide. And, have your fire extinguisher, FSN 4210-270-4512, handy.

With a little care and caution you can master the burner unit... and once you
get the hang of it you won't get the bang of it!

FIELD oO GOTTA BE KIPDING...
SINCE WHEN DO Th' MINNESOTA
RANGE VIKINGS TELL US TO USE TOOLS?'
e /T C 0 HI

Dear Half-Mast,
We have an M2 burner unit in our M59 field range,
what tools are we supposed to use on it?

Dear Sergeant H. K.H.,
Here are the tools you use on that burner unit:

Wrench, adjustable, Wrench, combination, Screwdriver, flat tip,
8" long, FSN 5120-303-7737 8" blade length,
FSN 5120-240-5328 FSN 5120-180-0725
.. ..- .

You'll see these listed in TM 10-7360-204-12 (Feb 68).

H/1- AW

SPACE HEATER FLAME SPREADER

Dear Half-Mast,
Is there an FSN for the flame spreader
that goes inside the burner assembly, FSN
4520-153-4602, of our 45,000-BTU space
heater?
SSG H. C. C.
Dear Sergeant H. C. C.,
No. You have to order the vaporiz- TO GET TiE
ing pot oil burner, FSN4530-277-3247, FLAME SPREADER
and it includes the flame spreader. That YOU HAVE TO
FSN is in the latest TM 10-4520-202- ORDER THE
25P. E.- J 62 BURNER!
62

30,45, 60KW GENERATORS...

Second guessing the guys who de-
signed your generator set by disconnect-
ing part of the cooling system never
pays. In the long run it means extra
sweat and elbow grease for you and
your support .. more down time for
maintenance.
Talkin' about the radiator shutter
controls and thermostat, like those on
your Hol-Gar Model CE-301-AC/WK1
generator set.
DON'T
SHUTTER DISCONNECT

It takes a few minutes for a newly-
started engine to warm up to operating
temperatures. Meanwhile, those wide

open shutters feed a rich fuel mixture
into the cylinders and build up excess
carbon on the spark plugs, valves and
pistons.
The same over-rich mixture is fed
to your baby on light loads more
carbon build up.
Before long somebody puts a big
load on your rig and wha hoppen? ?
The engine is so carboned up she can't
handle the load! !
'Course leaving the shutter controls
and thermostat connected means that
the set will put out all the juice you
need. During warm-up and low load
periods the shutters will be partially
closed and you'll get the right fuel-air
mixture. When the engine reaches the
proper operating temperatures,the ther-
mostat will open those shutters as wide
as you please.
If you suspect your baby is running
a little on the hot side, tho, check out
the thermostat.
TM 5-6115-321-12 (Mar 64) para
107, tells you how to test your Hol-Gar
30KW thermostat. Replacement parts
are listed right in the -20P.

fort t4i Vacw!
Here's the new address for your DA
Form 2028's and other suggestions or
questions on TM 38-750, TM 38-750-1,
TM 38-750-2, AR 711-16 and AR 735-
35. Send 'em through command chan-
nels to: U. S. Army Logistics Doctrine,
Systems and Readiness Agency, New
Cumberland Army Depot, P. O. Box
2947, Harrisburg, Pa. 17105. You can
make a note about this change in your
pubs till you get revisions.

Need some 4-in wide yellow reflec-
torizing tape to mark your flight-line
ground support equipment? FSN 9390-
057-4543 gets a 50-yd roll that meets
Fed Spec LS300 and costs $49.10. FSN
9390-057-4545 will get a 3-in wide,
50-yd roll for $36.80. Ch 1 (19 Dec 67)
to TM 55-405-8 requires use of this tape.
Requisition from AVCOM, RIC B17.

Supply types, hear this -
If you're keeping your records by
fiscal year carry on. AR 345-215
(Nov 67), para 4-3a(5), OK's cutoff by
fiscal or calendar year whatever
suits your operation. That info in the
AR's Appendix C provides examples
only.

You say you're trying to latch onto a
CX-2583/U power cable assembly like
the one under FSN 5995-349-4844 in
TM 11-5820-295-10 (Jun 63), but you
keep getting a CX-1852/U special pur-
pose electrical cable assembly instead.
Cheer up and use FSN 5995-752-
1282 as listed on Page 4.6 in Fed Cat
C5995-IL-A (Aug 67). This'll get you that
CX-2583/U.

Regardless of what you may read-
on the data plates or elsewhere-electric
drive motors are sealed for life and get
no lubing on Champion Air Compressors,
Models HR5-8MI, HR7-8MI, 60CAW20-
HM1 and 60CAW20HM2, as well as
Model OEH-458-DSA-1. Just follow the
LO's.

Seutnote Prop VDA
The next time you make a Seminole
(U-8) prop control check at 2600 RPM
remember you're allowed only a 200-
250 RPM drop as called for in page
3-10, item 21 of TM 55-1510-201-20
(Apr 66). The 200-400 RPM figure given
in para 3-25g(1) of the operator's pub
is being changed.

First thing you do when you get in a
new supply of Sulfuric Acid, Electrolyte,
FSN 6810-249-9354, is open up the ship-
ping cartons and check for leaks. Make
sure the plastic jugs aren't punctured.
Take off the cap and see that the seal
in the neck is secure. Then get the cap
screwed on snug.

mr# WUe 725t
The Mity Mite is now covered by TM 3-
1040-254-13 (Apr 68), titled: Disperser,
Riot Control Agent, Portable, 450 CFM,
M106. The -P manual for the Mite is still
in the works, though.

P^ Ree abl s4
Got your copy of Ch 5 (Mar 68)
to TM 9-2300-223-20P? That's your
COASL. It gives new scoop on PLL re-
coverable items.

S^ YOUR COUNTRY^
!NEEPS YOUR

Too BESURE
TO SeND IN YoU
SMi RY T
^_.^ BALUT/^$

ACTUALLY,
YOU
HAVE A
- I PREVENTIVE
MAINTENANCE
PROBLEM!

Gettin' a couple of silent oglers, like
the AN/PPS-5 and AN/MPQ-4A radar
sets, too close together can make a pair
of enemies of 'em. 'Cause when they're
operation' in the same area in the same
frequency band they fight each other's
radio frequency, and can have you
swearin' at false images. So, keep 'em
apart-say, 50 meters or more. Also,
don't let 'em look at each other.

7Water &n Geast <
You can get goo for gluing the gasket
to the closure assembly of your water
can if you'll ask for Adhesive: non-toxic,
Mil Spec MIL-A-1154, FSN 8040-273-
8717 (1 pt). You'll find it listed in Fed
Cat C8000-1L-A. And if you need the
gasket, ask for Washer, Nonmetallic,
cork, closure (gasket), FSN 5330-254-
6534. You'll find it listed in Fed Cat
C5330-IL-A.

Would You Stake Your Life on the Condition of Your Equipment9

NEELDJ

RP~ATh2

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