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P- BUT, V
>. SARUE, -
THE FUSE I
'4~'1: ;~~-"'`'"-"" "'""1`~~"'~"--
To the needs of your "custom-
ers" and equipment always
keep your supplies of parts and
materials equal to the demands of
THE PEIEUITIVE MIUrIAICE MwTLra
isuen No. 192 1968 Series
IN THIS ISSUE
comes out friend in need-n- .Jr ~ ei
deed. You're the fronl-line support of every
shooting' type there is-ankle. vehicle or chopper bot
We salute you!!
When inspecting, servicing, fixing
ELIABLE or record-keeping, do the most
An ounce of sweat now saves a
I ND D ton of trouble later.
A place for everything, every-
thing in its place-lubes, cleaners,
DERl Y tools, parts, pubs, PM records,
R IIERLY iforms... everything!
You react... quickly and
Q D l n E IV E surely!!Have a sixth sense
L U II VL for trouble- shooting.
You know your stuff because...
PERT you're always learning-and always
X R L I ready to learn.
This is your middle name stamped
Y n in big letters on every battle-bound
*A u T weapon your outfit owns!
Add 'em all together and they spell
Without you, your outfit might scoot
and communicate, but could flub when
L it's time to shoot.
Fuses. 210 ANPR25 -77 12
Cable/Conrctor Care II APIPRC-74B 1
A/BIGC.I5 i ANIIPP.4 14
AIR MOBILITY 15-24
Dt Pltes I U-IC, DH 1d
01M23G 15 CH47 2M0-1.22
04 13 PMThe Frnet 21
UH-I 17-11 U-SA 2
All-10 II Shleeer Lj&h 24
GENERAL AND SUPPLY
E9 acon n DA Foem 207 27
TM9-500 2 Clearin Machln Inflo
M11E199 N. 2 AtrplnAi 2dm j
Delner Wheel a Ne Puilcations 37
Supply ,7,.1,110.13,14. 117,11,21.22,21.
M.4A, 21, .44.4,4 1.5 s457,s, I.L
GROUND MOBILITY 38-50
Load Classficatllo 3241 M151 44
7449--eeer 423 T Eines 41.
W .Med4o4s A0 48.9
FIREPOWER 51-64 1'
Boe aCner 51 MOBSP 5617
MIS hG 54 ma so
MoI Tik 5 M14 Plasbc Slock 5
MUulopie 5 DA Forms 407, 02 57
ln of finds for printing of tis pibllu
i ho bn approvd by Hladlutersn.
Delhtmln mI Utn km 26 Farmfr 19Mt
DISTRIBUTION. In accordlace Itk re-
quirments submitted on DA Frm 12-4.
i I REALLY THINK YOU I
GUYS ARE OVER-LOAPING
ANP UNTIL YOU REGROUP
SI'M CUTTING YOU OFF
A fuse the best friend your communication or electronic equipment has!
That's right, 'cause a fuse sacrifices itself when a wayward electrical current
attacks your equipment or electrical circuit. Thus a lot of expensive cables, tubes,
circuits, wiring, transformers, resistors, and the like, are saved from massive
damage by a little ol' fuse.
Coming in all shapes and sizes, it serves silently, guarding against electrical
current surges or overloads, grounding and short circuits.
And, you take the fuse for granted until it's time to do its duty, then it fades
out or kicks up a fuss in the form of a pow, a pssft or an alarming noise.
FUST SHORT CIRCUIT
WE FEEL IN THAR--
DOWN THE WORKS.,
GOT FUSE BLUES? *
Now you say you know what a fuse is to do, but they come in so many
sizes with a lot of gobbledegook lettering your problem's knowing which one
to use as a replacement?
Well, back off and let the fairy tale be unfolded on the confusion of fuses.
First off, there are 4 basic types or families of fuses:
The fuse not only
guards the circuits but it
also acts as a fault indica-
When the fuse blows or
goes, you should replace
'er with an identical one.
If she goes again, it means
you have trouble along the
line or within the drcuit
and this takes some look-
ing into. Maybe higher
level maintenance on the
equipment is needed.
" In the makeup of fuses,
the most important rating
is current flow or amper-
age since that's the reason
for a fuse in the first place.
So, when your equip-
ment calls for a specific
amp fuse, that's the one to
Never use a fuse with
an amperage rate higher
than the equipment calls
The cartridge is probably the most discussed and
cussed because of its multiple uses and sizes and varia-
tions in shape.
Basically, the cartridge is tubular in shape, made of
glass, plastic, wood, ceramic or the like, with an inclosed
fuse link core attached to 2 ferrule or cap ends.
It measures 1 to 10 inches long and has an ampere
rating of .001 to 60 amps.
OFTEN TE THE LINK FUSE
ALARM TYPE The link-type, which includes the in-
USE IS USEP dicator-alarm, is a simple wire, ribbon
0 ANNOUNCE or flat sections with connecting necks
SPLIT CU T. making up the fuse metal.
The indicator-alarm-type is usually
found in telephone circuitry systems
I where a buzzer, noisemaker or signal
S lights lets you know the fuse has gone
The most common is the plain old house fuse, or plug-
type, which is used in 110-volt AC branch circuit. The
threaded plug, often called the Edison-base type, has a
mica or glass window to let you see the condition of the
The metal thread-type has a buddy, the ceramic-
threaded Fustat fuse that requires an adapter to round
South its fuse duties.
You may find the plug-type in circuits of from 0.3 to 30
amps and 125-volt ratings.
TTHE KNIFE- BLADE FUSE
p Last, but not least is the knife-blade fuse which likes
to play the role of tough guy 'cause it can take currents
ranging from 60 to 600 amperes. That's why it's usually
found in main fuse boxes and electrical power plants
FUSE TYPE TAUI
To help cut confusion on fuses, a type designation is being stamped on 'em as
required by Military Spec MIL-F-15160D. Heavy emphasis is on the cartridge
fuse, because of its multiple uses, sizes, etc.
CO course, the stamping looks like a lotta Greek, like, frinstance:
... But, when you separate the whole by its parts... then it makes sense.
The letter A gives the fuse's The 250V (volts) is merely
blowing time characteristic. the voltage rating.
S S stands for silver-plated
F03 A 250 2-1/2A S contacts. Not all fuses have
-silver so when the S doesn't
appear there is no silver. Even
The 2-1/2A (amperes) though silver-plated fuses are
The first 3 letter and num- is the amount of constant cur- sometimes called for, non-sil-
bers combination F03 .. rent the fuse will carry without ver-plated are preferred since
tells you the style or kind of blowing, silver tends to tarnish and cor-
fuse and its size. rode.
Fuse blowing characteristics are noted by the letters A, B, or C. These symbols
A Normal (normal interrupt- Time lag (delay or slo- ^ Normal (very high inter-
ing capacity) blo) C erupting capacity)
OLD C TYPE FUSES
To tie in the C-type with the new D-type of military standard for fuses,
MIL-F-15160 specification, just follow this conversion.
Like, for the C-type it'll be identified as FO1AR001A.
The F01 is the same as for the D-type fuse; the first A is 32 volts; R001 is 0.001
amps with the R as a decimal point, and the last A is blowing time characteristic,
which is also the same as the D-type.
Here're a couple tables that'll show the C-type setup.
A =32 volts H= 500 RO01 to R009 = 0.001 to 0.009
B=52 J= 1,000 R010 to R099 =.010 to.099
C=90 L 2,500 RI00 to R999 =.100 to .999
D = 125 N = 5,000 1RO0 to 9R99 = 1.00 to 9.99
G = 250 P= 10,000 10RO to 99R9= 10.0 to 99.9
100R to 999R = 100. to 999.
(uj)rren Rtig Amerg
L tae Rtin
With the many, many fuses used by the armed forces, the Army has brought" The link-type, including F51 for indicator-alarms, is covered by F36, F37,
the number of stock-numbered circuits savers for electronic equipment down to F38, F39, F40, F50, F52.
a minimum that covers most of this type of equipment. To help get the fuse you need for your communication, or electronic equipment
S All cartridge fuses are designated by style sizes F01, F02, FO3, F07, F09, or electrical circuit, here are styles, specifications and dimensions:
Fll, F15, F16, F27, F29, F30, F60. (Note: Many of these can be duplicated with
Plug types are covered by F14. similar, commercial fuses which may use a differ-
Knife-blade types carry styles F19, F20, F21, F22. CA R TRI D ent identification system.)
FUSE S L
Blow FSN Blow FSN FSN Blow / FSN
TBl Vohw g e t 590 Type Vohltoge Current 5920 / Type Volage Current 5920 Type voltag Current 5920
'Type Curr en5920 5920
\F lsA 125 20 -557-6057 A 32 30 -050-4962
1FO-tle measures 1 in by .250 in A 50 6 -548-3126 A 125 30 -539-6920 B 125 1 -142-4816
S 250 1/500 280-5046 A 32 10 -011-7142 B 250 1/100 -655-3806 B 125 2 -142-4802
A 250 1/200 -976-5740 A 32 15 COM- -012 0151 B 250 1/32 -504-8375 B 125 3 -686-9546
A 250 1/100 -951-3824 A 32 20 FUSED? -131-9915 B 250 1/16 -538-3719 B 32 5 581-6125
A 250 1/32 -232-3703 8 250 1/100 THIS -837-2633 B 250 1/8 -503-2203 B 32 10 -280-315
A 250 1/16 -232-3675 B 250 1/32 CHART -681-5722 B 250 15/100 -661-0530 B 32 15 -503-2880
A 250 1/8 -050-4965 B 250 1/16 SHOULD -229-1312 8 250 3/16 -754-8895 B 32 20 -686-9547
A 250 1/4 -235-8358 B 250 1/8 HELP! -284-9455 B 250 1/4 -683-6567 B 32 30 -280-3177
A 250 3/8 -240-7957 B 250 1/4 -504-8634 B 250 3/8 -687-1812 e measure 1-1/2 in y .40 in
A 250 1/2 -581-6504 B 250 3/8 -229-1317 B 250 1/2 -808-8342 A 20 1 -280-9326
A 125 3/4 -280-5024 B 250 1/2 1 -199-9498 50 3/4 -6884086 A 250 2 -243-9331
A 125 1 -050-0598 B 250 3/4 -755-3235 B 250 1 -636-0963 A 250 3 -263-0626
A 250 1163 -05-0939A 250 3 -263-0626
A 125 1-1/2 -050-0599 B 250 1 -284-9220 B 125 3 -583-8486 A 250 3-1/2 -280-4444
A 125 681-4396 8 125 1-1/2 -280-9328 B 32 5 -284-6796 A 250 5 -549-0032
Style measures 1 1/4 in by.25 in B 125 2 -228-7882 B 32 8 -636-0964 A 250 6 -878-7178
A 250 1/100 -519-9722 8 125 3 -681-0918 B 32 10 -727-1452 A 250 6-1/4 -280-4439
B 32 10 -727-1452 A 250 6-1/4 -
A 250 1/32 -280-5029 B 32 5 -851-9476 8 32 12 -142-7374 A 250 7 -548-9143
A 250 1/16 -221-4528 B 32 10 -284-6795 8 32 1 -892-9341 A 250 8 -8380302
A 250 1/8 -142-4838 8 32 15 -581-6504 B 32 20 -284-9219 A 250 10 -686-9548
A 250 1/4 -043-2641 B .32 20 -142-7380 B 3 30 -755-3656 A 250 15 -686-9549
A 250 3/8 -518-1790 FO rmeares 1-1/4 i .20 i st by .406 A 250 20 -686-9514
A 250 1/2 -280-8344 A 250 1 -665-2881 A 250 -686-9513 A 250 25 -280-9325
A 250 3/4 -296-0446 A 250 3 -296-1517 A 250 2 -686-9545 A 250 30 -230-9097
A 250 1 -280.8342 A 250 5 -296-0679 A 250 3 -636-3046 B 250 1/10 -199-3997
A 250 1-1/2 -050-4953 A 250 8 -284-7732 A 32 5 -280-3469 B 250 15/100 -199-3998
A 250 2 -280-4960 A 250 10 -280-5002 32 10 -28 250 (1/5) 199-3999
A 250 3 -010-6652 A 250 12 -254-7724 A 32 15 -280-168 B 250 2/10 -280-3176
A 250 A 250 1A 32 15 -280-3168 B 250 3/10 -280-3176
A 250 4 -557-2647 A 250 15 -199-9502 A 32 20 -280-44" B 250 4/10(2/5) -199-4001
ype Voltage urgent 5920 Type Vollge Current 5920
B 250 1/2 -199-4002 B 250 6-1/4 -538-3102
B 250 6/1013/5) -199-4003 B 250 8 -538-2990
8 250 8/10(4/5) -199-4004 B 250 10 -577-8735
B 250 1 -557-9119 B 250 12 -6464584
B 250 1-1/4 -199-4007 B 250 15 -280-5003
B 250 1-6/10 -280-3175 B 250 20 -057-2963
B 250 2 -6869515 B 250 25 -199-4038
B 250 2-1/2 -188-7373 B 250 30 -518-3208
I 250 3-2/10 -571-3242 F6st le measures 3 in b .812 in
B 250 4 -199-4016 250 35 -252-2022
B 250 5 -841-2337 A 250 40 -050-0541
B 250 6-1/4 1994019 A 250 45 -252-2027
B 250 8 -199-4022 A 250 50 -050-4961
B 250 10 -688-4085 A 250 0 0 -050-4972
8 125 15 -078-8659 8 250 35 -686-2664
8 32 20 -078-8660 B 250 40 -281-0161
B 32 25 -142-4808 B 250 45 -281-0158
B 32 30 -281-0203 B 250 50 -281-0159
Flle measures 1-1/2 in by.406 in B 250 60 -280-3181
A 25 1 -519-8118 F27-style measures 3 nb .406 in
A 250 2 -243-9331 A 000 3/8 -280-4005
A 250 3 -071-2764 A 1000 1/2 -131-9910
A 250 5 -2844131 A 1000 3/4 -280-4006
A 32 10 -071-2765 A 1000 1 -686-2665
A 32 15 -142-7396 A 1000 1-1/2 -2844128
A 32 20 -071-2766 A 1000 2 -284-4154
A 32 25 -296-1112 F28-Ey measure 4 /2 in by .406 in
A 32 30 -686-9517 TA 2500 1/2 -229-1243
F15-stle measures 2 in .562 i A 2500 3/4 -229-1244
A 250 1 -252-2013 A 2500 1 -852-2401
A 250 3 -050-0544 A 2500 1 1/2 -229-1246
A 250 6 -252-2018 A 2500 2 -280-3544
A 250 10 -548-3125 F29-sle measures in b.812 in
A 250 15 5430673 A 5000 1 -188-7313
A 250 20 -0504968 A 5000 1/8 -188-7314
A 250 25 -280-3550 A 5000 1/4 -190-3215
A 250 30 -050-4970 A 5000 3/8 -243-3779
B 250 1 -057-3152 A 5000 1/2 -131-9908
B 250 1-6/10 -280-3160 A 5000 3/4 -231-3574
B 250 2 0572955 A 5000 1 -687-1928
B 250 2-1/2 -2403874 A 5000 1-1/2 -190-3216
B 250 3-2/10 -281-021 A 5000 2 -543-3734
B 250 4 -636-3756 A 5000 3 -686-2666
B 250 5 -280-4013
Iow FSN Blow FSN
Type Vohoge Current 5920 Type ota Curren 5920
30tyle meau 10 in by.812 in B 125 1-4/10 -228-4498
A 10000 2 -243-5085 B 125 1-6/10 -564-3537
A 1 000 3 -892-9561 B 125 1-8/10 -058-6938
F60sty e measure 1-1/2 in by.406 in B 125 2 -843-2285
500 -681-4998 B 125 2-1/4 -058-6939
C 500 1/4 -725-6710 B 125 2-1/2 -356-2196
C 500 1/2 -924-3937 B 125 2-8/10 -356-2197
C 500 3/4 -945-9912 B 125 3-2/10 -552-1556
C 500 1 -636-0957 B 125 3-1/2 -564-3540
C 500 3 -548-9956 B 125 4 -142-6862
C 500 6 -553-6957 8 125 4-1/2 -564-3541
C 500 10 -296-0454 8 125 5 -683-5515
C 500 15 -686-0301 B 125 6-1/4 -845-3389
C 500 20 -686-0025 B 125 7 -564-3544
C 500 25 -538-5472 B 125 8 -224-4331
C 500 30 -825-2572 B 125 9 -564-3545
B 125 10 296 0482
B 125 12 -611-2323
P L-B 125 14 -564-3547
P U B 125 15 -538-4951
B 125 20 -636-3052
FUSES B 125 25 -6884084
SB 125 30 -280-9315
_____ _____ ____ P
F14-ty e measures 1-9/32 in by 1-9/32 in
A 125 1 -280-3179
A 125 3 -228-4463
A 125 5 -284-7126
A 125 6 -228-4465
A 125 8 -519-9049
A 125 10 -240 4114
A 125 15 -296-4884
A 125 20 -296-4885
A 12525 5 -2284482
A 125 30 -296-4886
B 125 3/10 -564-3530
B 125 4/10 -228-4498
B 125 1/2 -295-9680
B 125 6/10 -228-4505
B 125 8/10 -2284506
B 125 1 -838-9997
B 125 1-1/8 -564-3534
9-style measures 5-7/8 i
A 250 10
A 250 8 0
A 250 90
A 250 100
B 250 70
B 250 80
B 250 90
B 250 100
F20sty e measures 7-1/8 i
A 1250 110
A 250 125
A 250 150
A 250 175
n by 1.312 in
n by 875in
,Blow^ FSN Blow FSN
p Type Voltage Current 1 5920 Type Voltage Current 5920
F37-slyle measures 2-1/2inby9/16in
A 250 200 -252-2010 A 125 20 -853-2778
8 250 110 -199-4044 A 125 25 -853-2779
B 250 125 I -581-6096 B 125 20 -142-7342
B 250 150 -581-3282 B 125 25 -686-0023
8 250 175 -199-4046 B 125 30 -00-8839
8 250 200 686.0195 F38-style measures 3 in by136
F21 me sures 8-5/8 in by 2 406 in 125 40 -843-2286
A 250- 225 -243-3756 A 125 50 -883-8631
A 250 250 -243-3757 B 125 35 -131-9778
A 250 300 -243-3714 B 125 50 1319784
A 250 350 -721-0721 B 125 60 -131-9850
A 250 400 -190-7293 -stle measures 3.1/2 in by 1.1/16 n
B 250 225 -281-0169 A 125 120 -131-9846
B 250 250 -281-0170 8 125 70 I131-982
B 250 300 -281-0167 B 125 80 -686-9704
B 250 350 -281-0168 B 125 100 -131-9844
B 250 400 -281-0166 B 125 120 -686-2667
F22-stylemeasures 10-3/8 in by 2.906 in F4stle measures 1-3/4 in by 15/16
A 250 450- -243-5082 A 32 40 -686-2668
A 250 500 -243-3764 A 32 50 -686-2669
A 250 600 -243-3766 A 32 60 -131-9760
B 250 450 -889-9358 A 32 70 -686-2670
8 250 500 -190-7473 A 32 75 -683-5514
B 250 600 -583-8674 A 32 80 -845-1679
A 32 100 -686-2671
A 32 125 -131-9755
A 32 150 -131-9754
8 32 40 -552-1310
S1 B 32 50 -280-9348
1S B 32 60 -583-7989
B 32 70 -131-9763
B 32 75 -686-2672
B 32 80 -131-9765
B8 32 100 -581 3801
B 32 125 -131-9767
F36.style measures 2 1/2 in by 9/16 in B 32 150 -131.9770
A 125 -10 -881-9364 F50s yl measures 1-13/32 in y 13/32 in
A 125 15 -221-4531 A 90 1 2 -280-8626
B 125 1 -131-9781 A 90 1-1/ -280-8625
B 125 2 -131-9779 90 2 055
B 125 3 .142-1341 F51-style I(diralto-alarm) measures 1-43/64 in
B 125 5 -583-2451 by 13/3in
9 125 10 -131-9776 ~90 -280-8582
B 125 15 -131-9777 A 90 2 -681-3738
W W Like with the CX-9994/U, -9995/U
KEEP OUT or -9996/U on the AN/GRC-46()
radio teletypewriter set's J-2498 inter-
ABLE K K connecting box.
Your best bet's to grab
Waking up with your head screwed USE the connector by one hand,
around can sure put a kink in your BOTH and with the other, gently
neck and can be mighty aggravatin'. HANDS YOU'5 iR
That's the kinda kink your cable MAKINGT AR
can get into and put a twist on cor- CONNECTIONS!
screw the connector collar
-when removing it or putting
D iEt on.
Otherwise, you'll wind
up with the wires twisted
loose from the connector
eand rCa r.s 5 Kwsfe-... your
communications hurting .
DODGE THAT DOWNTIME
SuPPORT! X NE'FE 00T
THE *HAFT E CF BUSiNESS
When you cast a long, thoughtful
eyeball toward your AN/GRC-106
radio set, you may spot a new long-
handled primary power switch on your
AM-3349 power amplifier.
Careful with it. If you push it down
too hard you might break the plastic NEW PRIMARY
shaft and put the whole power ampli- POWER SWITCH
fier on downtime.
...AND DRY !
Trying to keep your back-pack 1
portable radio set dry in wet, ert
weather is nigh on impossible.
SLike with the AN/PRC-25
-Qr AN/PRC-77 when you're on
a boonie tour and haven't much
time to take time out to wipe
the set dry.
or the CY-2562
will tell you
to ger the rubber
(FSN 5820-9" .3960)
YOU'RE KEEPING ,
THAT PRC .. '
-i DRY. < .
When you've been trippin' through salt water and the radio set's had a
dowsin', clean 'er good and see to it no seepage is inside.
Salt water not only corrodes the set fast, but will also short out the circuitry.
A LITTLE PULL
CANNf 7 UN TE4NSTAL7 -
i SEE GI DO IT "E5TE~'PA'.
HE NE'rER TOUCH Wi1RE!
Tuggin' by the wiring to loosen the battery connector in that CY-6314 battery
box (FSN 5820-935-0382) on your AN/PRC-74B radio set can poop the power
in the pack.
Sure .. it'll put a kink in your fingers grabbing the tight connector to free
the BA-386/U or BA-4386/U battery but don't lose your cool.
Pull up a stump, sit and read on ..
To disconnect the connector Place your thumbs through Then, push the retainer down,
release the battery retainer's 4 the retainer hole nearest the and the connector is left up high
wing nuts to the stops or cap- connector, and push down. enough to get a grip on to free
tive pins. At the same time pull up on the battery.
the retainer with your fingers.
Replace the dead batteries with good ones and you're back in business.
And, remember to do a little patient jiggling to install the first battery
to mate the battery box connector with the battery. Forcing it'll crack or dam-
age the battery socket.
A POSITION TO BE IN HOLD IT
WA THHOTSHOT... YOU'RE
WHAT GONNA BURN ME
So you have a hot-to-track AN/PPS-4( ) radar set and all that's needed is a
hookup with a power-packed BB-422 ( )/U nickel-cadmium battery.
But, hold one, Hank.
Before you make that power cable connection, roll an eyeball around the
control panel switches.
Make sure the POWER switch is in the OFF position and the VOLTAGE ADJ
switch is in the lowest position .. No. 1.
If you leave your radar set's power on and the VOLTAGE ADJ switch on
the highest mark, the Q801 and Q802 transistors will be burned up. This'll
leave that enemy movement locator limp and silent.
IT'S GOT A PATA
PLATE ON IT AND I
JUST WANNA BE
The manufacturer's data plate on an
Army aircraft is important and has got
to be on the bird at all times. It carries
the airframe serial number--the bird's
identification--from assembly line to
deep six time.
No matter where you find the plate
attached you never tamper with it ex-
cept at salvage time. O'course, you or
your support unit may have to remove
it during repairs, but make sure it gets
put back on. Anytime you find the data
plate missing let your CO know ..
If the data plate takes an enemy slug
or is badly mutilated in an accident,
turn in whatever is left to your main-
tenance officer. He'll send it by regis-
tered mail thru command channels to
the U.S. Army Aviation Materiel Com-
mand, ATTN: AMSAV-F, St. Louis,
Mo. 63166, with a letter request for a
GET BETTER BRACKETS
nd cracked, broken rudder
pedal brackets on your next Bird Dog
.(O-1) PE, don't replace 'em with P/N
/0613007-102. You want a sure-fire
Here's what you'reso get your support unitfor:
Cop assembly FSH 1560-076-6043 P/N 436 2 CHAIN
Chain assembly FSN 1560-076-6044 P/N 417.20.9
Adapter, cap FSN 1560-167-8264 P/N 436-12
GET BETTER BRACKETS
If you find cracked, broken rudder
pedal brackets on your next Bird Dog
(0-1) PE, don't replace 'em with P/N
0613007-102. You want a sure-fire
bird stopper, so get your support unit
to put on new design brackets, P/N
BRACKES 0600520-15LH and P/N 0600520-
UH-1 T/R DRIVE SHAFT... YOU BETTER CHECK YoUR
DASH 20 AGAIN...
BE A AAA'/B
I UMAYS B THE
CLAMP W PZNE
Every fling-wing knucklebuster has battled his temper boo-coo times while lin-
ing up and torquing down the clamp assemblies holding the Huey's tail rotor
A few PM tips will turn your sizzle to simmer and make you the champion
clamp assembly man in your outfit. The pilot'll appreciate it, too!
Some clamps are steel, some aluminum, so start with metal-matching clamp
assemblies. Now take a close look at the assembly. If one of the halves is busted,
banged up, scarred, or cracked, get a complete clamp. Never use un-matched
." _. -- -------- -_ '
You might get a substitute nut, P/N H22-4, from supply. If so, just don't use
it on the same clamp with the 52Z1835-48 nut. No mocky-nicky nut/bolt deal
allowed on any clamp, anytime, Podner.
With a copy of the -20 in your mitts, start working at the 90 tail rotor gear
box and work toward the transmission. Starting on the tail rotor end means that
the main rotor blades don't turn every time you put torque on the clamps ... or
when you turn the shaft 90 to add another clamp assembly.
t Space clamps 90 degrees apart
- like it says on drive shah rover
& Insert the 4 bolts with bolt
heads pointing in direction of
shat loltation (Right here you
could give birth to a Murph if
you put bolts in bassackwaids )
Now wrench tighten the nuls All 4 get the same smooth,
even-Stephen treatment with your torque wrench
6 Keep your feeler gage
handy to make sure the damp
gap stays the same.
Like as not Tiger, you II gel some le
distance before the nut/bolt is sealed
and/or mated. So-o-o-o, during the nut-
tightening sequence, top the clamp with
a rubber mallet to keep the clamp
"'- THE AMOUNT
I OF TORQUE
NEE 'EP TO
THREAD THE FULL
After tapping, set your torque wrench on 30 in-lbs
plus friction torque, and turn the nut to the torque
value. Use your feeler gage to keep the clamp
halves spaced evenly apart as you draw the assembly
halves closer together.
When minimum torque is reached-tap around
outer edge of clamps for a good seal job and retorque
1 Before you install any new
bolts and nuts. make sure the
threads are free from nicks
burrs paint gieasc or oil
(lean threads will assure cor
red torque value
That's right, HueyCobra wrenchbenders. Take a close
look at the 4 main rotor trunnion housing retaining
bolts. Some heads of these NAS bolts have sheared-and
disappeared! 'Course a kaput bolt's not likely to come
out while your bird's chasing Cong, but the trunnion
housing tension will be gone!
So-o-o-o, on your next PMD, check the bolts. If they're
P/N NAS1306-21 or 1306-23, replace 'em with internal
wrenching, high-strength steel bolt, P/N MS20006-20,
FSN 5306-639-7587. SHEARED BOLT HEAD.
REPLACE WITH BOLT
Don't forget that 8 washers P/N MS20006-20
and 4 nuts get changed, too. FSN 5306-639-7587
You want to add a new washer,
P/N MS20002C6 or P/N 140-
007-25-20C4, under each bolt
head and under the nut, P/N
Hold one, tho, Podner.
Before you torque the new
trunnion cap bolt to 160-190
in-lbs be sure you have the IF BOI IS P/N NAS1306.21
washer's countersunkside next OR NAS1306 2 R[PLAE(
to the bolt head. Now twist 'er, WillH P/N MS uu0000-
Mister! FSN 5306-639-7587
SNO 5'LI C' NG
The ARC-54 whip antenna on your Huey (UH-IC, D, H) has a habit of
flexing into the tail rotor blades. So, make sure your bird has a wedge-type
spacer between the antenna base and fin. The spacer tilts the antenna away from
the blades no baloney!! MWO 55-1500-200-20/6 (2 May 68) has the scoop.
For the combining transmission oil diup-out we add about 7 feet of 1'-in ID neoprene
hose, FSN 4720-278-1096, to the drain, and run it along the bulkhead-station 534-fo
the left side former BL 251 then aft to station 594 Here we connerr the hose to the
APUI AGB motor pump drain tee line P/ N 114H3104 Safety wire holds it in place -
and the oil stays off the ramp.
Oil backup from our Chinook's engine
overboard drains and the combining trans-
mission oil drain used to keep the fuselages
in a mess. It created a hazard to crew mem-
bers and troops, too, because oil ran and
dripped down onto the ramp area. A mis-
step and somebody became a fall guy!
We've come up with a couple of ideas
that keep the aft section clean and dry. We
tape 6 to 8-in long scrap flex hose to each
engine drain outlet with green tape. F'ris-
tance, a used 20-in oil sample tube, FSN
4710-933-4416, cut into 3 pieces, works
fine on the V'-in drains. Takes 10 tubes-
6 for right hand engine, 4 for left. Tying
each set of tubes together in a couple of
places with .032-in double twist safety wire
makes 'em stronger and easier to handle.
Our crews don't get on oil bath when pulling engine run-ups, and the Chinook's rear
end and ramp stays clean and dry for our mechanics pulling maintenance and for troops
getting on and off.
154th Avn Co
Fort Sill, Okla.
(Ed Note Looks like you've saved a heap of clean-up and re-painting time plus
a batch of busted backsides!)
MAINTAIN THE FLOATS
Anytime you receive floats to take the place of aircraft tied up for extended
DS or GS maintenance remember those borrowed birds need regular preventive
maintenance... the same PM you give .our own.
_ __ II~
TRY THIS MEASURING TOOL
TO HAVE A SET Dear Editor,
OF NATURAL There's a bit of a measuring problem when in-
GAGE TESTERS! stalling the forward synchronizing drive shafts in
Installing and torquing bolt, P/N AN5H30, in
* .rj S resilient mount, P/N 107D3146-6, calls for 7/64-
Sto-I 1/64 inch of the bolt to show thru the attach-
It's almost impossible to fit a ruler or fine incre-
ment scale in there in order to come up with an
S o, here's a little measuring tool I had whipped
up in the machine shop.
SThe tool works like a charm in determining
how.many washers should be added under the nut
i to get the right measurement.
Wallace B. Crawford
New Cumberland Army Depot
2_ _-ETCH OR ENGRAVE ---_2
14I .l 1, 1
X6 THICK STEEL STOCK
(Ed Note-Good going! Looks like a real handy tool for close quarters.)
NO CRACKS, PLEASE!
SWHEN' Chinook tenders be sure you make with the
WE LAST eddy current tester P/N 114GS226-1, on your CH-47
C HECK OUR Able Model, P/N 114R1002-series rotor blades every
ROTOR intermediate and periodic. See the checklists for de-
BLADES ? tails a cracked spar can really let you down!!
EYE THIS BOOT FOR SIZE
takeit nte c e A
------- 9 -
F SPRN' H HN
Dear Editor, --- ~
Your air mobile shelter, FSN 4920-900-8378 sure gets moved about in the field.
Result: Busted fluorescent tubes that jar loose.
Here's a fix for keeping your tubes in place to save Uncle some moola and head
off the broken glass hazard. Broken fluorescent tubes are real dangerous.
Just add two springs, P/N V-46, FSN 5340-682-1642, under tension, below the
two tubes and you've got it made.
- 4" K- DRILL )h" HOLE AND INSERT X4" X Y" COTTER PIN
i SPRING V-46
L T T -
Granite City Army Depot, III.
(Ed Note-Outstanding! Newer shelters will have this problem solved but this
fix can be used on all shelters now in the field.)
That's right, bird wranglers. Never use the T-41B parking brake to hobble or
stop a moving Mescalero. Hobbling the bird with the parking brake breaks or
pulls the cable loose where it swages into the cable assembly. No adjustments are
allowed on the system so a busted or stretched cable means a Mescalero red X'd
for cable replacement.
FOR THE M9, TRUCK-MOUNTEP PECON
COMPLETE DRAINING'S A MUST.
ESPECIALLY IN COLD WEATHER...
OTHERWISE THE PUMP HOUSING
AND PIPES WILL CRACK!
And. without a pump, the rig is
headlined, natch. So. always open the
pump drain valve, and then check
under the truck to be sure all the water 3
drains out of the pump.
The draining poop is spelled out in i ".-.
TM 3-4230-203-12 (Mar 65). 0 ''
EQUIPM ENT TM 9-500 (Sep 62), Ordnance Corps
SCOOP o Equipment Data Sheets, makes a heavy
SOT package, but it's really worth lugging
around. The book is loaded with info
I l on equipment and components identi-
-y Ification, specifications, capabilities, ca-
Spacities, supply info, pubs references
and pictures. It even tells you where to
look for the equipment's BIIL.
The fat, loose-leaf type TM has 4
-6 j changes.
Better run an eyeball right now over
the slae cylinder arm assembly of your
10,000-lb Model NMHE 199 Pertibone-
Mulliken rough terrain forklift.
Cracks or separations are showing
up in this assembly. and the sooner you
catch 'em the easier they'll be to repair.
So check the assembly now and after
esery 40 hours of operation.
If you see cracks or separations, then
a "stitch in time" can save )our rig.
Your support can repair it in no time
flat by grinding out the old weld and
rewelding with a low hydrogen elec-
' \"~ '~ .*
DELOUSER WHEEL DEAL
To make sure your Model 252 QM Johnson de-
lousing equipment, FSN 4230-889-2315, will do its
job, replace the aluminum blower wheel with a new
steel one. The aluminum wheel just won't hack it.
Your support unit can get the steel wheels under
FSN 4230-014-0410 from: Commanding General,
U.S. Army Mobility Equipment Command, ATTN:
Mil-Strip A12, 4300 Goodfellow Boulevard, St.
Louis, Missouri 63120.
Para 3-57 of your TM 10-4230-202-15 (Jan 67)
gives you the scoop on removing and replacing the
OF TIPS FOR
a -i. -ault tjllIaLIm V lIU 1I .1 tll _'
regulator instead of the 40-amp
jobs listed in TM 10-3930-243-
20P. Here's the dope to order 'em:
They're the same as those used
on the 10,000-lb Clark Models
SMHE 179 (TM 10-3930-241-20P)
and MHE 173 (TM 10-3930-223-
NOX NPl;i! USE MIL
PON'T LET THEM
GENERATOR SETS FOOL- DESIGN
IN BLOCK 5 OF YOUR NUMBER
PA 2z07 AND IN ANY
LOGS CALLING FOR
"MOPEL". PON'T USE
--, MOPEL NUMBER! R /.'r -f
bI%1DC Your 10,000-Ib Model MH E 199
O S Pertibone-Mulliken rough terrain
TOO forklift. FSN 3930-903-0899, has
3C n At a l .
WOES WITH PUMP HOSE?
You say you can't get those fuel cans
and drums cleaned because the hoses MALE QUICK FEMALE QUICK
for your Model QM 2-28002 Barnes DISCONNECT DISCONNECTS ON
pump, FSN 4320-913-7131, won't fit ON SUCTION HOSE EACH DISCHARGE HOSE
on to the cleaning machine, FSN 4940-
Well, order one male quick discon-
nect coupling half, FSN 4730-360-
0592, MS 27021-9, to go on the pump
end of the suction hose, and two female
quick disconnect coupling halves, FSN
4730-360-0591, MS 27025-9, to go on
the pump end of the discharge hoses.
Don't let the color arrangement throw you.
All FSN 6505-823-8041 and FSN 6505-926-9083, atropine injectors, regard-
less of color white tube with red safety cap and blue trigger cap, or green tube
with yellow safety cap and green trigger cap have the same amount of atropine.
And, they all work like it says in para 14d.1, Ch 2 (Apr 63) to FM 21-11 and para
20, TM 8-285,(Jan 68).
PROTECT YOUR ATROPINE
Are you losing or damaging your atropine injectors every time you drag the
shoulder strap out of the pocket in your M17 mask carrier? You can save 'em
easy like! Just attach the strap for good to its D-ring. That'll keep the strap handy
for you and the injectors safe in a roomy pocket.
THE OUTFIT LAY REAPY TO SPRING... POISEP LIKE E ME SLEEK JUNGLE
ANIMAL... THE AIR WAS STILL... AND THE JUNGLE OUT BEYOND THE CLEARED
FIELDS-OF-FIRE WAITED- SULLEN UNDER THE DELTA SUN...IT WAS HIGH
NOON AT BOKU!
YEAH... LIKE IT'S BEEN PUNNO-
HIGH NOON FOR THREE DPENDSON
WEEKS NOW! WHEN'RE W THE ENEM)
GONNA JUMP OFF'? IGUE SS
..~k~,~~"~c~"~la';: *~ ;Irr.
U -up..To I-ON
*4 'j 'I PATE..:j IY0UWR
ONE OUTFrT SHAME!'
WITH NUMBER \SHI A
L10 EQUI :PME NTV)
TO BE AT FIGHTING
MUST KEEP HIS EQUIPMENT
AS MUCH A PART OF RIGHT!
...ANP THAT MEANS
HE MUST LAY ON
.) PRONTO! A
I No matter how small or how big,
An improvement on your fighting rig
Will keep your stuff right-
Save your neck in a fight-
MWO's are ORDERS-you o dig"
^ i (%\
IF YOU WANT TO DISPLAY THIS CENTERPIECE ON YOUR BULLETIN BOARD, OPEN STAPLES, LIFT IT OUT AND PIN IT UP.
LISSEN, o IT'S YOUR EQUIPMENT.
CONNIE, I'M JOU MUST KEEP ON
JUST AN TOP OF IT.. IT'S
OPERATOR YOUR JOB TO
1 DON'T /"f THEMWO'S!
HOW ] FIRST, KEEP AN EYE ON
DO I \ THE WEEKLY BULLETINS
FIND OUT FROM THE ST. LOUIS A6
ABOUT .PUBLCATONS CENTER,
BUT DON'T STAKE YOUR
WE'VE SKIN ON IT... JUST KEEP
GOT A WATCHING THE BULLETINS
PINPOINT AN DIG6ESTS... AND
ACCOUNT! DA PAM 310-7.
SO WE SHOULD
PAM 510-7 LISTS ALL CURRENT
MWO'S ANPGIVES YOU THE
WHICH AND VMAt- -WITH FSN'S.
SEE PA PAMH 310-10 ON HOWA
'TO GET 'EMYAL.50 THE:
310- SERIES DA CIRCbLA4RS LL-JI
THE RESCINPEP MWO'S.
SET UP A NEW PA 2408-5 FOR THE
END ITEM OR COMPONENT THAT THE
Mwo APPLIES TO!!
I I OT TO
IF THE MWO IS FOR ORGANIZATIONAL
MECHANICS TO APPLY... IT'LL HAVE A
-20 (OR SOMETHING LESS THAN
30)AT THE END OF THE NUMBER...
IN THIS CASE YOUR OUTFIT GETS
THE KIT ANP APPLIES IT!.'
THE MWO IWILL
IF IT SAYS,
ON TOP, IT MEANS
THAT ITEM I REP,
URGENT MWO'5 ARE
AIMEP AT FIXING THOSE
THINGS THAT COULD
KILL YOU OR YOUR
EQUIPMENT IF THEY'RE
NOT FIXED. EVEN
IF IT'S NOT URGENT
GET IT APPLIED AS
SOON AS POSSIBLE.
THE BIT ON A
PA FORM 407./
SUPPOSE THE MWO ACTION
RESULTS IN AN ENP ITEM'S
CHANGE OF FSN, WHAT DOI DOF
N A DA 2407.
THEN THE NUMBER ON THE
UPPER RIGHT WILL BE -30 OR
HICHER...BUT YOU STILL
RECORD THE NEEP FOR IT
ON THE MODIFICATION
SIDE OF THE 2408-5
OR 2409! .
AT PAWN, A WEEK LATER-THE WHISTLE BLEW ANP THE
OUTFIT MOVE OUT... SNAKING ACROSS THE PAPPIES AND
INTO THE BOONIES BEYOND.
WELL, CONNIE, Y'SURE
PID IT... EVERYTHING
WE HAVE THAT FLYS, ROLLS,
SHOOTS OR COMMUNICATES
IS IN THE GREEN.WE'LL
S- -. 00 OKAY ON THIS
TM 5-3805-209-15 C3, Jul, Earth
Moving Equip Graders.
S'M 5-3805-224-25P Cl, Jul, Earth
Moving Equip Scrapers.
TM 5-3895-230-20P C3, Jul,
TM 5-3895-323-25P Jul, Aggregate
TM 5-4110.208-24P, Jul, 10,000 BTU
TM 5-4120-210-15 CI, Jul, 50,000
BTU Air Conditioners.
TM 5-4120-225-15 C., Jul, 6,000 BTU
TM 5-4120-228-15 Cl, Jul, 9,000 BTU
TM 5-4120-300-15, Jun, 36,000 BTU
Skid Mid Air Conditioners.
TM 5-4210-213-12, May, Fire Fighting
TM 5-4310-200-15 C3, Jul, 15 CFM
TM 5-4310-220-20P C2, Jul, 210 CFM
TM 5-4310-227-15 C1, Jul, 15 CFM
TM 5-4310-252-15 C2, Jul, Under 5
CFM Air Compressors.
TM 5-4310-277-15, Jun, 15 CFM Air
TM 5-4310-201-15, Jul, 5 CFM Air
TM 5-4520-200-12 C4, Jul, 400,000
BTU Space Heaters.
TM 5-4520-200-25P, Jul, 400,000 BTU
Gasoline Portable Duct Type Heater.
TM 5-5420-207-ESC, May, M48A2 and
M60A1 Launcher Tank Chassis
TM 5-6115-255-10 C4, Jul, 3 KW 60
Cyc Eng Dirn Gen Sets.
TM 5-6115-275-12 Cl, Jul, 10 KW 60
Cyc Gen Sets.
TM 5-6115-275-20P C2, Jul, 10 KW
60 Cyc Gen Sets.
TM 5-6115-292-25P Cl, Jul, 150 KW
& Up Elec Gen Sets.
TM 5-6115-319-15 C4, Jul, 150 KW
& Up Eng DOn Gen Sets.
TM 5-6115-329-15, Jun, 0.5 KW AC
0.5 KW 28V DC GED Gen Sets.
TM 5-6115-332-25P, Jule, CW 60
Cyc Gen Set.
s'llf TM 5-6115-351-15, May. GEl Gen
Set ATr Cooled 7.5 &W 28 V DC.
TM 5-6115-440-15, Jun, 7.5 KW DC
TM 5-6665-203-12 Cl, Jtul. Land Mine
TM 5-6675-220-15P C2, Jul, Sureying
This is seleded lid of recent pube Equip.
of interest to oa onectrlot n-ife. TM 9-1005-224-25 Cl., Jul,. M60
nance personnel. The fist is compiled 7.62-MM MG and MI22 Mount.
from recent AG Didribution Conters TM 9-1010-205-24P, Jun, M79 40-MM
Bulletins. For complete details see DA Grenade Launcher.
Pan, 310-4, Ch 5 (Feb 68), TM's, TS', TM 9-1055-217-ESC, Jun, 2.75-1nch
etc., DA Pam 310-6, Ch 3 (Apr 68), XM3 Rocket Launcher.
SC's and SM'; DA Poam 310-7 (Apr 68), TM 9-2320-218-ESC/1 C2, Jun, MIS1
MWO'. %, Ton Utility Truck.
TM 9-2330-251-14P C4, Jul, M569
TECHNICAL MANUALS MS6981 M416 M416B t % Ton Trailers
and M762 A Ton Flatbed Trailer.
TM 3-1040-256-20P, Jul, XM45E1 Trkd TM 9-2350-224-20 C4, Jun, M48A3
Veh Mid Flamethrawer Service Unit. Tank.
TM 3-4240-202-20P, Jul, CBR Mask: TM 10-1670-219-23P Cl, Jul,
ABC-M17 Field, Personnel Parachute.
TM 5-3431-202-10 CI, Jul, Welding TM 10-5410-222-23, Jun. inflatable
Equip. Shelter W/Airlock Airesearch Mfg Co.
Mdl S1 W2.
TM 11-1520-211-20 CI, May,
UH-1A-IB Electronic Equip
TM 11-5820-222-10 C9, Jul,
AN/VRC-24 and AN/TRC-68 Radio
TM 11-5895-367-15 C., Jul,
TM 11-5895-506-25P, Jul,
AN/GRA-95 Antenna Group.
TM 11-5985-296-15, Jun, AN/TRC-91
and AN/TRC-146 Radio Sets, Antenna
Group AN/GRA 105.
TM 11-6720-237-15, Jun, Still Picture
XL-75 Canera System.
TM 55-1510-201-20PMI & -20PMP,
TM 55-1510-202-20P Cl, Aug, 0-1.
TM 55-1510-203-20, C7, Jul, U-6.
TM 55-1510-204-20P, Jul, OV-1.
TM 55-1510-204-20PMD & -20PMI,
TM 55-1510-205-20 C7, Jul, U-1.
TM 55-1510-209-20 C3, Jul, U-21.
.TM 55-1510-209-20P, Jul, U.21A.
TM 55-1520.201-20 CI1, Jul, UH-19.
TM 55-1520-204-20 C7, Jun, OH-13.
TM 55-1520-204-20 C9, Aug. OH-13.
TM 55-1520-204-20PMP, Jun. OH-13.
TM 55-1520-205-20 C1O, Jul, CH-21.
TM 55-1520-206-20 C 1, Jul, OH-23.
TM 55-1520-209-20-1, May, CH.47.
TM 55-1520-209-20-2 Cl, Jul, CH-47.
TM 55-1520-209-20P-1 C6, Jul,
TM 55-1520-209-20PMD -20PMI &
-20PMP, Jun, CH-47.
TM 55-1520-210-20PMP, Jun, UH-1D.
TM 55-1520-217-20 C4, Jun, CH-54A.
TM 55-1520-217-20 C6, Jul, CH-54A.
TM 55-1520-218-20 C4, Aug.
TM 55-1520-219-20 C6, Aug.
TM 55-1520-220-20 C6, Aug. UH-IC.
TM 55-1520-221-20 Ct, Jun, AH-.G.
TM 55-1520-221-20 C2, Jul, AH-1G.
TM 55-1520-221-20P, Jun, AH-IG.
TM 55-1520-227-20 C3, Jun, CH-47.
LO 3-1040-256-12, Jul. XM4SEI Trkd
Veh Mtd Flane Throer Service Unit.
LO 5-2805-259-12, Jun. Goas Eng 20
HP Mil Std Mdll.
LO 5-3610-229-12-1, May, Webb-Fed
Motor Drn Offset Printing Press.
LO 5-3895-321-12-2, Jun, Dust
Collecting Machine Paving Material.
LO 5-4210-213-12, Jun, Fire Fighting
LO 5-4310-277-12, Jun, 15 CFM Air
LO 10-3610-200-12, May. Offset
LO 10-3610-228-12, Jun, Printing and
MWO 5-6100-201-20/1, Jul, 10 KW
60 Cyc Gen Sets.
MWO 9-1240-273-40/1 Cl, Jul,
M108 and M109 Howitzers.
TB 750-992-2 C4, Aug, All Rotor Wing.
HE' CONNIE, HOWL
CO WE GET THE FULL
STORY ON THIS
5' STEM ?
AR 746.5 w/(h 1 (Jun 66)
TB 74693-1 w/(hl
(Aug 651 and Ch 7 Iul 66)
FM 5.36 w/Ch 1 (Apt 66)
Thr FM change genes )ou tht load clas- number for )our schicle. It has
tables for tracked vehicles, half-tracked vehicles, wheeled vehicles, towed
vehicles, construction equipment and standard combination vehicles (prime mover
If your vehicle or combination vehicle is not listed in these tables, Para IV-1
Appendix IV, of the FM change tells you how to get the right dope from
WELL IT'S "lII!
THE DRIVER 'S
RESPONSIBILITY' / TRUCK ALONE The basic load classi-
ficarion number is painted on the right
door of the truck. This's based on the
normal design pa) load 2-1/2-tons.
You use the number in the Class C col-
umn of Table IV'-3. This number is 8.
YOU NEERE k _uF 5-_IN,:
WHEN NrOU PUIT THE
ON THAT NEHICLEFC
Then, on the changeable-number sign
on the front of sour truck, you carry
IhP .mep niimher
Ihighway operaiitIn allows a bigger pay-
load, up to 5 tons for the M35 2'/2-ton truck,
as you see in Weight Column II in Table IV-3.
But this doesn't change your load class num-
ber. You use the class H number only if there's
no class C number listed. If no H number
either, you use the Class E number.)
the Combat Development Command
Engineer Agency And there are data
charts showing exactly what info
CDCEA has to have to figure lour se-
hicle's load classification number.
WHAT WHERE' WHEN7
E en when their %chicles are listed
in those tables, some guys ha'e a little
trouble figuring out v which number goes
where on the vehicle, especially when
the''sc got a combination schicle-
like a truck and trailer.
So let's see how it's done using an
M35 2-1/2-ton cargo truck and an
M104 1-1/2-ton cargo trailer for ex-
amples, first as separate vehicles and
then as a combination vehicle.
TRAILER ALONE Go to Table IV-4,
Class Column C. Paint the number 4
on the right side of your M104 trailer.
That's all there is to it for the trailer.
COMBINATION VEHICLE For your M35
truck towing an M104 trailer, check
Table IV-7. Here again you use the
number in the class C column. So you
change your front number to 10. And,
since this's for a combination vehicle,
you show the red letter C above the
ADD THE "C" FOR
If you've got any kind of setup that's not listed in the tables in Ch 1 to FM
5-36, go to CDCEA with all the info they call for to pinpoint the load classi-
fication numbers for your single vehicle or combination vehicle.
FOR TACTICAL OPERATIONS LOCAL SOP
SYSTEM IS DIFFERENT.
WHERE BRIDGES ARE 0 7
POSTED WITH MILITARY '
LOAD CLASS NUMBERS!
OTHERWISE YOU CAN
LEAVE THE CHANGEABLE-
NUMBER SIGN BLANK
NUMBERS 'N' TRUCKS
Afe-on vrif nmltr odcasiiainfrsadr eilsi M53
Dear Sergeant N. B. O.,
All of your trucks with a gross weight (vehicle plus load) of 3 tons or more
carry the load class on the front. But you use the changeable number kit only if
that load class is likely to be changed, like for switching from a single vehicle to
a prime mover in a "combination vehicle."
If your truck (gross weight 3 tons or more) normally pulls a trailer with a
rated payload of more than 1-1/2 tons (or lighter, if trailer has load class listed),
you paint the iruck's basic load classification figure on the right door of the truck.
This does not apply to a truck unless it has a trailer normally assigned to it,
even though the truck has a towing pintle. ,
G749-SERIES 21/2-TON TRUCKS...
BLOCK & CHAIN WITH WINCH
The BIlL in Ch 7 (Feb 65) to TM 9-
8024 sounds like all G749-series 2h-
ton trucks get Block, Snatch, FSN 4730-
833-7019, and Chain, Tow, FSN 4010-
047-3902. But I suspect these 2 items
are meant only for the trucks with
front-mounted winches. Am I right?
ISG J. W. M.
Dear Sergeant J. W. M.,
You suspect right-only trucks with front-mounted winches get the snatch
block and tow chain.
But, that FSN for the snatch block should be FSN 3940-625-6289. Even with
that FSN you may get Block, Snatch, FSN 3940-609-8026. This's the block for
G742-series 2-1/2-ton trucks with front winches, but it's OK for your G749-
Block, Snatch, FSN 3940-625-6289, isn't in TM 9-8024 yet, but you'll find
it in Fed Cat C3940-IL-A (Mar 68). 41
AA4 5 ET
WHY THE FLAP? T
THE HOOP'-PON'T [W T BUT
NEEP MUCH TIN
HE HO THERE'S A LOT
TENDING! O/ F THINGS
AND DOING IN
ORDER TO KEEP
The turbocharger is lubed by the
engine's oil. When the engine stops,
the oil flow halts. But and here's the
clinker the turbo is free-spinning. So
when you shut down the engine, the
turbocharger is still going around -at
35,000 to 50,000 RPM but not much
oil is being fed to it. That's rough on
the turbocharger bearings. And the tur-
bine blades also get real hot. All that
heat can work its way down the shaft
to the seals and shorten their life. A
sudden shutdown can also cool the
blades so fast that they'll warp.
What you want to do is let the engine
run idle a few minutes before you shut
it down. This brings the speed of the
turbine down enough so that when you
stop the engine the blades won't cool
off too fast and the bearings won't miss
the oil. JZQ 1 ,,hi
Starting right is just as important as
stopping right. So give the oil a chance
to reach the turbocharger and lube the
bearings by running the engine at idle
for 3 to 5 minutes before you roar
down the pike. /30 "
Overspeeding the turbo can also
mess up the bearings or maybe tear up
the turbo. You get overspeed by lug-
ging the engine with little or no let-up
- unless your turbo has a waste gate
to hold down the RPM's. A dirty air
cleaner can also cause overspeeding as
the turbo fights for air.
WEST COAST MIRRORS
Dear Half-Mast, / HAS THERE
We've got command authorization (un- BEEN A SWICH WE
der AR 385-55) to outfit our G744-series GET THE MIRRORS
5-ton trucks with those big West Coast- WITH THE BRACKETS
type mirrors like are standard equipment
for 10-ton trucks.
Several years ago I got some of these as shown in PS 145:
Mirror w/mounting bracket, right side, FSN 2540-575-8391
Mirror w/mounting bracket, left side, FSN 2540-575-8392
Now we're getting only the mounting brackets under those FSN's.
SSG J. A. H.
Dear Sergeant J. A. H.,
There were mirrors w/mounting brackets packaged under those FSN's at one
time (and they're still cropping up from older stocks), but they should come sep-
arately, like so:
16 x 6-in, FSN 2540-788-5637
Bracket, right side, Brcket, left side,
FSN 2540-575-8391 FN 2540-575-8392
This mirror goes with either bracket so you'll need 2 of 'em for both
sides of the truck.
The mirror and brackets are listed in Fed Cat C2540-IL-A (Jan 68).
There is a special mirror-with-bracket being designed for 5-ton trucks. It'll
be similar to that setup for 10-ton trucks. 9
LUBE CHART NEEDLE
Those needle bearing U joints in your 1/4-ton M151 can rust out faster than
you can say, "not lubed", Which is a pretty good reason why you want to give
the lubrication chart the once-over when you make with the grease gun. You
wouldn't want to miss any of those ump-teen fittings and without the LO in hand
they're harder to find than a needle in a haystack.
G742-SERIES 21/2-TON TRUCK...
THE CLUTCH KILLER
Look out for the clutch-rod butcher!
He's the guy who hacksaws a hunk
off the clutch-control rod on a G742-
series 2-1/2-ton truck. He's a well-
meaning guy he thinks he's saving (
Uncle a buck by getting just a little
more mileage out of the clutch facing.
But he's wrong. Know why? You
guessed it when that last bit of facing
gives out, the metal clutch plate comes l
smack dab against the metal flywheel.
Talk about hot! It's curtains for a good
part of the clutch assembly and prob-
ably the flywheel, too.
It's a pretty expensive way to save a buck.
So if you see a guy holding' a hacksaw and eyeballin' the clutch-control rod,
here's what you tell him:
When the rod's been adjusted so far that the end touches the clutch throw-
out shaft lever, it's time to replace the clutch disk assembly.
Trying to get more adjustment by cutting some off the rod will only make
big trouble out of little trouble.
HAS THE BUTCHER
STRUCK?? HERE'S HOW
YOU TELL: IF THE
THREADED END OF ROD
IS RAGGED OR RUSTY -
But, to be sure, measure the rod not by follow-
ing the curves, though. Measure in a straight line
- from the threaded end to the center of the holes
in the fixed yoke. Your rod must be 13 inches RIGHT WAY
right on the button. TO MEASURE
If your rod's shorter than 13 inches, get rid of LENGTH
it get a new one: Rod, control, w/yoke, assy,
FSN 2540-752-0977. It's in your TM 9-2320-209-
20P (Jan 65).
And keep a sharp eye out for the clutch-rod
PACKING You can have a leak unless
there's packing at both ends of the U-
hose. If it's not there, order it. When
installing, keep it flush.
HOSE ASSEMBLY (air cleaner to turbo-
charger) No leaks. If you think there
might be a leak, have your mechanic
give it the soapsuds test. If it has any CLAMPS- Present and tight. If you
holes, replace it. need one, order it.
After you're sure %our air intake s stem is OK. chtck our generator blower,
which can be another problem.
/ Hold a piece of cloth or paper in front of the air-intake screen the %aa it says
in your vehicle -10 TM. With the engine running the blower should suck the
material against the screen. If not, stop your engine and call your mechanic.
Make this test every time you start your engine.
This way you'll find out in time if the generator blower is not working and
you can save your generator from overheating and burning out.
THE BLOWER S
WORKING CONNECTOR DUCT
It might be that the blower motor is working even when there's no suction on
the air-intake screen. This could happen if the mechanic forgot to reconnect the
flexible connector of the generator duct after a power pack was replaced.
With the duct not connected the blower will draw in dirt and dust. Then it'll
overheat and fail, and the generator will likely burn up too.
So, always test for suction on the generator air-intake screen and call for a
mechanic if it's not there. This could save your generator.
The engine should not be operated with any defective or improperly
mounted air intake parts.
The M60 tanks serial number 5 through 1249, should have the new genera-
tor air intake screen as outlined in MWO 9-2350-215-20/17.
BAFFLING MYSTERY SOLVED
What causes the air filter baffles in our M60 tanks to sometimes get burned
=h' 'MSG HS s- T.
.- -. ...--I-L.
Dear Sergeanr H. S. T.,
Thi c n h nrnn u hen a mr m....: ,-..
pp n -mpress o
TO HEAD ignition (diesel) engine runs back arc
OFF PAMAGE, Air goes through the engine in a r
YOU NEVER verse direction in at the exhausts at
WANT TO out through the air cleaners. The he
LEI YOUR of the exhaust can warp and burn t]
IENGINE RUN A diesel engine can start up and r
BACKWARIP5. f backwards if you let the vehicle coa
back down a hill in gear after the engil
has conked out.
AIR WARM ERR- -'
FOR THE M60, M60AI & M728 CEV
Repair parts support has changed a bit for the M3 electric air heater, FSN
4240-807-6856 used with the gas-particulate filter unit in your tank.
In a nutshell there's a newer and better M3
ASK FOR THE NEW HEATER
heater now in the supply system, and it's cheaper to
replace the heater than it is to replace its controller
or heater assemblies. So, from now on, when those
assemblies conk out, you ask for a new heater and
turn in the old one to your support unit.
Also, the controller and heater assemblies for the
old M3 heater won't work with those assemblies
for the new heater. And, the only repair parts you're
authorized at organizational level for the heater are
attaching and minor parts like screws, washers, wire, REPLACE WITH FSN 4240-807-6856
indicator lamp and control knob. WHEN NEEDED
TM 3-4240-240-25P is being changed, but for .
now the new supply scoop is in TB 750-942-2
M114A1 CARRIER... IF IT'S AN M114 YOU'RE
JOCKEYING THRU THE
ET RING BOONIES... HERE'S A
S COUPOLA (XMZ6) THINGS
U -YOU SHOULD KNOW/
If you've got an M114A1 carrier (Serial 625 through 2519) with the XM26
cupola, burn spots on the brush holders and contact rings may be your hang-up.
Use a fresh, dry (no oil) rag and
clean the brushes real gentle like you
were dusting off a butterfly.
Move your rag the long way of the
RINGS brushes. If you scrub up and down the
little jokers will break for sure.
Check the circuit with a voltmeter like a real pro. Testing a circuit by any
other means can cause burns either on you or on the rings.
Water on terminal boards and contact brushes can cause electrical shorts
which can pit brushes, boards or both. Besides, water makes the wiring wear
So-o-o-o, no water-even low pressure water-for cleaning the electrical
Check on the alinement of board and brushes. If the brushes are not making
contact right, have your support fix 'em.
The screws that hold the terminal board to the support assembly might get
loose or slip. To make this less likely your support will apply sealant FSN 8030-
081-2335 to the screws when they are assembled or adjusted.
To keep em healthy clean fioide!s
and rings at each 0 service and when
ever else you get a build-up Of dfr! ao
or metal filings I
Listen up on this if you have an M60 or M60A1 tank or bridge launcher, an
M48A3 or M103A2 tank or an M728 CEV with a serial number below 106.
Mud and goop in the external fire extinguisher housing can rust the cables
and pulleys so they won't work in an emergency.
To keep them in good shape get your cheerful company mechanic to do this
every "Q" service:
1. Loosen the 3 screws and 2. Clean the pulleys, the cables 3. Make sure the pulleys turn
take ff the ver and the de of the vern the and
take off the cover. and the inside of the rnvpr ".. d
STAY CLEAR OF BRAND HEX CLEANERS FOR YOUR M16A1
YOU'D BETTER BELIEVE IT!
WADPYA PON'T BE
THINK A SUCKER...STAY
SBUPHIK CLEAR... WE KW
I l,, Uf? AUTHORIZED c
If it's not authorized, you just can't
be sure. Why risk your neck?
Right. When your TM says to use
bore cleaner or P-C-111B carbon re-
moving compound or SD dry cleaning
solvent you can bet your bottom piaster
it'll not only do the best job it'll do
it without hurting any part of your
weapon. Uncle has a lot of sharp sci-
entists working like ants to make sure
On t'other hand, if you use some off-
the-shelf unauthorized solutions, you
might get what looks like a good clean-
job, sure, but they might damage your
rifle. Like .. some of 'em contain in-
gredients that'll remove all lubricant
from the springs and detents. And these
springs and detents can't be lubed thor-
oughly without taking the rifle apart.
If you don't have time or authority to
do this welcome trouble.
Some of the other unauthorized solu-
tions contain chemicals that's damage
the aluminum and plastic parts of your
So, stick to the tried and true au-
thorized stuff every time.
Here they are:
THE ONLY CLEANER
US ZAPA1EN SHOULD
E\ER uSE FOR
Carbon Removing Compound, P.C-l11B-
FSN 6850-965-2332 ... 5-gal can.
You riflemen use this stuff for tough
carbon cases only under the guidance
of your armorer.
Dry Cleaning Solvent (SD) FSN 6850-281-
1985 ... 1-galcan.
This SD is strictly for you armorers.
Use it as a rinse after P-C-111B to pre-
pare metal surfaces prior to touch up.
Normally you'd use it only when the
MI6Al's completely disassembled. But
if you use it on an assembled rifle, be
mighty careful to keep this solvent away
from springs and detents.
MACHINEGUN C ATTE
If you fire the M85 machinegun when
its barrel is unlocked you could blow
up the gun and maybe hurt yourself.
Not much chance of this happening JuST HOW
because it takes two separate goofs be- MAAY GOOFS
fore there's any danger. GUNNES
Still, it's something you want to AUTHORIZE
know about if you make your living AU Z ,-
. firing M85 machineguns.'
Like you learned back in Basic, the
interlock is a safety to keep the 185
from firing unless the barrel is in the
So, if that safety is missing or broken.
you have no protection if } ou make the,
Course you can't
even do this unless
you've already Jw'
made the first
'S goof. (There's
no danger with
Sa missing or
^- 'broken interlock
J. Sif you have the barrel
securely locked during firing i
STo check the interlock, remove the
barrel extension and pull the bolt back
S out of the wa.s. Now )ou can finger the
If the "hanging dow n parr" is bro-
ken off you can tell right an what
causes this damage to the interlock is
letting the bolt slam into it.
To present that
all sou hae to
do is make sure
the barrel is full\
locked in place
before .ou ease
the boll forward.
The interlock % ill then
be rucked back out of
the sa) and won't get
Check the interlock spring by press-
ing on the interlock and then letting go.
If the spring won't make the interlock
snap back into its "hanging down" po-
sition, have your armorer get a new
Likewise with the springs on the bar-
rel latch and the barrel latch lock if
they're missing or weak, tell your arm-
orer. If the barrel latch is working
right, you should hear a CLICK when
the latch snaps into the barrel groove.
(Don't be fooled by the bolt slamming
home, because it also makes a loud
So check the springs on the interlock.
the barrel latch and the barrel lock ..
and you'll hale no worries about the
barrel getting unlocked at the wrong
The retaining pin can drop out and
get lost when you remove the barrel
group from the barrel extension. Hold
the bolt group upright and the pin
won't slip out.
If you lose this pin and put the gun
back together without it, the bolt block
can move too far forward on the bolt
slide. This will let the 2 cartridge case
retainer pins line up with the holes in
the bolt slide. One or both of these pins
might slip through the holes and jam
the gun so it'll stop firing.
If you've already lost your bolt re-
tainer pin, use your spare bolt and get
your armorer to order a retaining pin for
your old bolt. It's FSN 5315-591-2082.
If the barrel latch lock is working
right its spring will shove it into the
locked position when you let go of the
latch and lock and the barrel latch
snaps into the barrel groove.
SHAKE... BUT DON'T BREAK
A little shaking up might do a lot of
good for your Polan or Varo model I
metascope assemblies like when
you're removing' the scope from its car-
rying case. AWW
With the Polan model, first remove i \1 CUT IT OUT,
the light source from its pocket in the THE RATTLII'
carrying case. ATTL Y'HEAR, 1
Then, with both models, hold the 'HE PS
bottom of the carrying case, turn it up- TEETH
side down with one hand at the open- '
ing, and shake the case real easy like '
'till the scope hangs down about an -
inch. Grip the scope between your
fingers, and slide it out.
Some troops ha e been knov n to
A GIVE IE grab the rubber eyeshield of the scope
SHAKE, to pull it from the case. The usually
THEN GRIP end up with a piece of the eyeshield
IT FIRMLY in one hand.
AND SLIDE In cold weather, when the rubber's
IT OUT. brittle, they end up with a piece of the
shield about 95 out of 100 times.
There's a lot more profit in shakin'
up the scope a little.
Hold one there, )ou M108 SP 105-
MM howitzer crewmen!
If you've been living out of Change 2
to LO 9-2350-217-12 (Nov 64) and got
the habit of leaving a coat of CR clean-
ing solvent compound on the breech
and firing mechanisms after daily firing
like it says on page 2, get ready to
CR is not repeat NOT a lube.
It offers no protection whatever for
bare metal, especially moving parts like
the cocking lever and such. Result:
Rust... corrosion... parts failure.
COCKING LEVER CAM PATH
So, from now on do it thisaway. After
daily firing, remove the breech com-
ponents and firing mechanisms, take
'em apart and clean every part that
comes into contact with powder gases
real good with CR. But don't stop there.
After the CR does its stuff, wipe the
parts real dry and then get this! -
put a light coat of PL general purpose
lube oil on all the surfaces, including
the cocking lever and including the cam
path in the breechblock and breechring.
Light coat: Soak a clean rag with PL,
wring it out good and then wipe the
O'course, when you don't expect to
fire daily, give your M108 the standard
3-day CR treatment, followed by coat-
ing with PL.
This poop is in the latest change to
WHERE THE GG GOES
WHAT PO LO 9-2350-208-12 (May 63) lists graphite grease
WHAT P on the M48A2C tank for use over 32 degrees but
dI doesn't show where. What's the scoop?
S WITH LT F. C. A.
SDear Lieutenant F. C. A.,
The graphite grease (GG) goes on the bore
Sevacuator threads of your M48-series tank or
. other weapon with a bore evacuator after
firing, quarterly, or at inspection time.
A big thing, though, is that you now use GG
when the temperature is above zero degrees and
GAA when it's below zero. The very latest LO's
tell about this.
PLASTIC STOCK HARDWARE
If your support guys say they're having trouble getting the hardware to go
along with the plastic stock for your M14 rifle, tell 'em to try these: Screw, FSN
5305-999-1875; Nut, FSN 5310-999-1891; Nut, Retainer, FSN 5340-999-1864.
When you find things that are wrong or bad or won't work, the form's the
thing for you to fling. Fill out DA Form 2407 (EIR) on equipment or DA Form
2028 on publications and send it in. Now... today. Don't delay.
F/,'/ S'iaOfw O
^,) ^^2f^ 8/y 9y9^
IF THE FAIRINGS
ON YOUR HAWK
STOP, LOOK AND HASTEN
Take action .. that's what you want to do if you're in
a Hawk firing battery and all's not right with your war-
head handling fixture.
The welding's needed to keep from dropping a warhead.
YOU HAVE AN
TRAPE IT IN ON
A NEW ONE!!|
SIT'S WELDED HERE
OUT THEY COME
What do you think about using col-
loidal graphite on the different screws
used in our Hawk missile? Some of
them really put up a battle when you
try to take them out.
SSG H. R.
Dear Sergeant H. R., L
Forget the colloidal graphite.
Seems the stuff can help bring on
YOU CAN USE
Hold one, though. The grease is
not for using on the wing bolts. As
it says on page 156 of TM 9-1410-
500-12 (Jul 62), you want to use
a mixture of molybdenum disulfide
and castor oil on the bolts.
ADO PREFORMED PACKING There's preformed packing that you
should use with the front fairings. It's
FOR TIGHTER F G listed under FSN 5330-684-3275 on
page 6 of TM 9-1410-500-15P/2/1
And your support unit has the scoop
on repairing the screw holes in the
S. front and rear fairings when the holes
get big. Your DSU will use epoxy and
FRONT FAIRING SCREW a washer to do a job on those holes.
At ease no sweat if the cover
pulls away from the outboard edge of
your Hawk missile wings. This kind
of separation doesn't make the bird non-
Keep using the wings in this shape
. and think about getting them to
your support unit for repair when the
job won't put the kibosh on )our (acti-
/ Dear Half-Mast,
'... // I've been with a Hawk unit for a long
C) time and I've never been able to get an
answer to what seems like a simple ques-
Sc tion. That is, how many track pads are
there on each side of the loader-
SFC J. B. NO MORE
Dear Sergeant J. B., AFTER THIS
You can look through all the TM's you want to, but you
won't track down the answer to that one-at least notsin so .
many numbers. Here it is, tho: there're 43 on the right track
and 44 on the left track. Page195 of TM 9-1450-500-25P
(Aug 66) gives you a clue by saying there are 87 connecting
track links on the loader (43 + 44).
Vehicles with a torsion bar suspension system usually have
more track pads on one side than on the other.
When you're no longer able to adjust tension on the tracks, you might get
back some of the adjustment by reversing the sprockets. The driving face of
the sprockets can wear enough to put lots of slack in the tracks.
Same thing with end connectors. New ones might be the answer.
If reversing the sprockets and getting new end connectors won't do it, then
you want to get rid of all bum track blocks. Change 7 (Dec 67) to TM 9-2630-
200-14 tells you about track block wear limits. And don't be surprised if you
wind up needing enough blocks to give you a complete track-so you adjust
for the tension you need. H1L-ft
ON THE LEVEL
If you hear or see anything different from what the LO's say about checking
the transmission oil level for your Hawk XM501E2 or E3 loader-transporter,
CHECK TRANSMISSION WITH... don't you believe it.
As both LO 9-1450-500-12/1 (Jun
2 ~68) for the E2 and LO 9-1450-500-12/2
s 5 30- (Jun 68) for the E3 spell out, you check
35: the level with the engine idling and
the drive selector in neutral. The same
scoop's in TM 9-1450-500-10 (Jun 66)
tEGINE I 1 for the two vehicles.
IDLING ... IN NEUTRAL Any other way of doing it is wrong.
You're right .. the scoop that tells you about taking care of the filters in the
liquid cooler for your Hawk AN/MPQ-35 is in TM 9-1430-502-12/3(Mar67).
3 with what it says on page 3-4 about re-
placing the two filters in the Eastern
Industries-made cooler every 500 hours
of operation-or cleaning the filter AF
housing and cartridge every 500 hours 500
of operation if your cooler was made by HOURS
A clogged filter can give you the sort
of cooling troubles that mean burned-
out electron tubes and transformers. REPLACE THIS ONE... CLEAN THIS ONE!
DOWN THE DRAIN
Sure has been a heap of pump motor troubles with the
Eastern Industries liquid cooler used in your Hawk AN/
MPO-35 oulse acquisition radar. And there's a good
OUT A /
chance that it's a case of the OS-45 coolant getting by
the pump seal and washing the grease from the motor
Try this: take the plug out of the bottom of the pump
seal housing on both pumps. That'll give the coolant a
way to get out. Hold on to the plug and put it back in if
you're going to ford.
Remember take out the bottom plug, not any of
the other three.
'A question on the M390
and 390C trailers that are
used in the Hawk missile
S Are the inner tubes
Sin the leveling support jacks HALF MAST
and the retractable support BU5 SY
assembly supposed I'M
to be pained ,- TELEPHONING
SFC F H li a
Dear Sergeant F. H..
Not on your life.
The inner tubes in the leveling support jacks are cadmium-plated. And while
this plating is gray and looks a mite like the start of corrosion, you want to
keep your distance with sandpaper or emery cloth.
The inner tube for the retractable support assembly is coated with phosphate,
which is also gray. It doesn't get sanded off, either.
If you have paint on any of the inner tubes, get it taken off with paint
Then put a light coat of oil on the tubes. Use Lubricating Oil, General Pur-
pose, Corrosion and Salt and Spray Resistant. It's listed on page 4.30 of Fed Cat
C9100-IL (Sep 67). You'll find that FSN 9150-231-2361 is worth a quart
and FSN 9150-231-2356 gets you 5 gallons.
If you want to put on a fresh coat of oil, first remove the old stuff with a solv-
ent that has a petroleum base. Dry cleaning solvent (SD) works fine.
PAINT O' DUCT'S BACK
Not on your life there's not supposed to be NO PAINT HERE, EITHER
any paint on the extension duct that's part of the'
missile-cooling duct on your Hawk launcher.
Instead of paint, which makes like insulation, .
you want the duct to be clean so you'll have a path
for electrical grounding between it and the outer
Things will be in good shape if nothing covers
the chromating on the extension duct. In other
words just keep it clean.
Hold one... here's the latest scoop you want
to use along with LO 9-4935-500-12 (Nov 67)
on your Hawk AN/MSM-43 organizational
maintenance shop equipment.
Note 2 to the LO talks about replacing the
filters every so often. What you should do in-
stead is change filter elements. That means low-
pressure filter element, FSN 4935-959-1026,
gets replaced after 36 missiles, or after 3 months.
Missile pressure hose filter element, FSN 4935-
066-1643, gets changed after you've tested 72 IANGE
missiles, or after 6 months. I TE
No sweat with the high-pressure filter ele- ELE
ment, FSN 4935-761-8892, seeing's how note 2
tells you to replace it not the filter.
TM 9-4935-500-15P/1 (Oct 67) lists the ele- La
ments on page 17. One thing, though, the high-
and low-pressure elements are called filters in
the -15P/1 and the missile pressure hose filter
element is called element.
Maybe it's happened to you when you put the 14KV
power supply in the tactical control console for your
Hawk battery control central. That is, the mounting
terminal for the C5 capacitor gets clobbered by the head
of one of the TCC floor mounting bolts.
It's a good way to come acropper of electrical troubles
. .. and a busted mounting terminal.
So take it easy when you put in the power supply.
Also take the washer out from under the head of
the bolt and cover the head with some electrical in-
sulating tape. This moves the bolt head a little more out
of the way and cuts down on the chances of arcing.
COVER WITH TAPE
IT'S TRUE, JACK
HOLD THE a It's there in bold print the caution
RETAINING PIN about lowering the leveling jack pads
OUT UNTIl on your Hawk AN/MPQ-34 CW
THE PAD acquisition radar and AN/MPQ-37
Is range-only radar.
DOWN Para 102a of TM 9-1400-500-12/1
(Aug 65) tells you to hold the spring-
loaded retaining pin out until the pad
is all the way down. If you don't, you
can wind up with a busted jack arm.
Just ask the man who has one. -
-a1N-- -:3s rB~d
e g *@
New-20 P 57 N151A1
Better'n aspirin for some of your
supply parts headaches, it's the new
TM 9-2320-218-20P (Apr 68) for your
G838-series vehicles. There's some new
dope in this revised -20P. And remind
your support that there's a new -34P -
also April 1968 for the M151A1 and
other 1/-tonners in this family.
616...I e Zi"ing et6o
If you've got an interesting career
with the M16A1 rifle, you ought to take
a look at DA Pamphlet 750-30 (Jun 68),
The M16A1 Rifle Operation and Pre-
ventive Maintenance. It's in living color
with Connie, some of you good guys
and a few of those bad-uns. Order
copies from the Baltimore, Md., pubs
center on DA Form 17.
Stc" y W7pc 7
Which -20P do you use when stocking
MS (minimum stockage) items for tank-
automotive equipment? Good question.
You use the TM 9-2300-223-20P, the
consolidated parts list for tank-automo-
tive equipment, unless you have received
a new parts manual with the PLA (pre-
scribed load allowance) list in it.
In that case, use that particular vehi-
cle's -20P PLA list for your MS, not the
consolidated 20P. TM 9-2320-218-20P
has the PLA, so you use it for your
appe's Own m6 Pub
Hey, you M16A1 sharpshooters, be
sure you latch on to TM 9-1005-249-12
(2 Aug 68). That's right "-12." It re-
places all the operator-organizational
dope in the -14 TM with all of its changes.
S IF YOU NEEP MORE COPIES F THE
LATEST PS MAGAZINE INPEX COVERING
ISSUES 182-187, WRITE TO MSG HALF-MAST;
PS MAGAZINE, FORT KNOX, KY, 40121.
HE HAS PLENTY.
Would You Stake Your Life on
the Condition of Your Equipment?
LIKE, IT'S THE
BIG TRIP MAN
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