PS Magazine Issue 130 1963 Series [130 ed.]

Citation preview

WITH WHAT YOU'VE

COT

hasi s because it need s cons tant emp This is an old story , but it. ve belie to se refu le too man y peop syste m from the n OlJr main tena nce ge in W e need to stren gthe ease in budg et, no chan incr No . back on l user leve thin k of is othe r chan ge that I can orga niza tion , and no

tena nce burd en. goin g to ease the main mor e com plex . equi pme nt will get such that As we mod erni ze, OUf of mod erni zatio n is rate the , time e At the sam er than we'd like. have to he used long .o ld equi pme nt will time . This all nt is goin g up all the The cost of equi pme tena nce at all ent for incr ease d main irem requ the to adds oach our main tethat we have to appr leve ls , and it mea ns ht. Mor e imusia sm and ne w insig nanc e with new enth dem ands of get bett er resn Its. The to have we ant. port se. perm it no othe r cour com bat effec tiven ess -

G. WHE ELE R GEN ERA L EAK LE

y Chief of Stall , U.S. A,m

KEEP IT READY!

FIREPOWER M?3MacltineGu1l

~

2-16 2·12

U.~::~;

GROUND MOBILITY

17-28

WHEELS

TRACKS

25

" """ "

MOO

M1I3

" .24

AIR MOBILITY

37-46

.." 31

"

COMMUNICATIONS

This is an old story l but it needs constant empbasis because too many people refuse to believe it. We need to strengthen our maintenance system {rom the user level on back. No increase in bud get, no chan ge in organization, and no other change that I can think of is going to ease the maintenance burden. As we modernize, our equipment will get more complex:. At the same time, the rate of modernization is such that old equipment will have to be used longer than we'd like. The cost of equipment is going up all the time. This all adds to the requirement for increased maintenance at all levels , ami it means that we have to approach our maintenance with new enthusiasm and new insight. More important, we have to get better results. The demands 01 combat effectiveness permit no other course. -G£NERAL EARLE

G.

WHEELER

Chief of Staff, U.S. Army

KEEP IT READYl

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~'~~C-6 RlI·39(J

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AN/GAM

53

48-55

T-195/GRC-19 54 AN/MMQ.J (J 54 ANfMP5-23 54

GENERAL AND SUPPLY

~s wants lour l~e3S an~ conlllbutlDn~ an~ IS ~Iad 10 ans wer your QuesllOns Names an~ addre~su are kepi In conMtnte jusl Wille to

fl.Of2f

IN TJIIS ISSUE ARTICLES

FIREPOWER

2-16

M73MxhilltGuo 2·12 Hike 13,14,1' 14,15

IfIwk

GROUND MOBILITY

17-28

WHEELS

TRACKS

25

" """ "

11,24

AIR MOBILITY

.." " ..

MOO

MlI3 GENERAL

C1lains

T,Jilen TorqueVllues

37-46 Oil Coolers

31

40,41

Sfla!!Rings 42,43,44 £ng!I\tClamll$ BulietinBoud

COMMUNICATIONS

45 41

48-55

50

"""

.."

GENERAL AND SUPPLY TenUgeR~irKil

CarbonMonoxicitMasb Pui)liution$

51..3 II oil

Use Dllunds fOf pri~li.. 9' this ,ulliintiu fin hen approved by Hudqnrlers, Oep~ftllleni of the ,-rmy." April 1961. DISTRIBU·

TlON - 10 K(orduct ",jib re quirements submitted on OA form 12·4

/101:21

BE YOUR OWN

but it sure comes of age pronto when it comes to putting the anti in antipersonnel fire. Yessir-the co-axial, 7.62-mm M73 machine gun's a real Swinging Richard when it comes to chopping up the opposition or picking off troublemakers. But get sloppy with your PM habits and when you need it most the only thing you' 11 be chopping is your gums. Here's a trouble-shooting Be-YourOwn-Inspector guide that'll pave the way to giving you instant firepower at the touch of a button. Those items in bold type are the ones that rate on-the-double attention. But all the points should be given a careful eye-balling. Take care of all the items in your echelon and get on the horn for support action on the rest. Among the main defects to look for are rust, improper lubrication (check thac LO decal regularly), wrong assembly, dirt, grease and pitting.

M71

BE YOUR OWN

It may be the baby of the firepower family on your M60 Mainliner tank, but it sure comes of age pronto when it comes to putting the anti in antipersonnel fire. Yessir-the co-axial, 7.62-mm M73 machine gun's a real Swinging Richard when it comes to chopping up the opposition or picking off troublemakers. But get sloppy with your PM habits and when you need it most the only thing you'll be chopping is your gums. Here's a trouble-shooting Be-YourOwn-Inspector guide that'll pave the way to giving you instant firepower at the touch of a button. Those items ,in bold type are the ones that rate on-the-double attention. But all the points should be given a careful eye-balling. Take care of all the items in your echelon and get on the horn for support action on the rest. Among the main defects to look for are rust, improper lubrication (check that LO decal regularly), wrong assembly, dirt, grease and pitting.

M71 MACHINE GUN

I

CD Cover Group} (D reed Tray Group ... PAGE 4

CD Receiver Assembly

... PAGE 5 CD Barrel and Barrel .Jacket ... PAGE 6 CD Back Plate Assembly ... PAGE 8 ~ CD Barrel Extension Group ... PAGE 10 3

MACHINE GUN

I

CD Covel' GI'OUP} CD Feed Tl'ay GI'OUP ... PAGE 4 CD ReceiveI' Assembly ... PAGE 5 CD BGI'l'el and Bal'l'el ,Jacket -CD Back Plate Assembly ~..::::... CD BGI'l'el Extension GI'OUp 3

.. .PAGE 6 ... PAGE 8 .. .PAGE 10

1. Cover Group

~~ ~ ~ ~-&rr ~~ ~-~ ~ . ~ .~ ~

~~==~~~~

rough, worn, busted. missing. Check for sliding action when assembled in the cover. The retainer should slide freely, but the plunger should hold it in the center position.

2.. Feed Tray Group

-'

FEEOTRAYASSEMBLY Spot welds broken. loose; tracks split. cracked; latches split open, too tight, burred; rivets worn, bent. loose, missing.

EEl (j

-

...... 0

-4

The M73 in the M60 tank, remember, ;, left· hand fed. So double ched< !hat 011the park of the ,o..r and feed tray ..sembly ore put together with the T." lined up together. Her,'. some1bing, " you have the feed troy as· sembled for right.hand feed and then put the feed troy .. badtwanfs (meaning with the I.... and R's-/o the ....,. yo. could load the weopon and dos. the roy... BUT the weopon won'! cbamber and fir. berause the w·HI.. port of the feed troy dot would then be to the rear. Brand Ihis CMI y"!lr brain, The wide port of the feed troy dol-jud lik. the I.Hers-must be toward the Iron! of the mo· chile 9\IA.

rs-t·.

4. Barrel anti

N.w hear this, Flash hider 7792830, ba.ster 7792872 and barrel he.ring 7792829, .11 .f whichare applied through MWO 9-1005-233-30/ 1 (8 Apr 63) are not interchangeable with the pom they replace.

A word. to the wise: Never dean the rings on the mume end of the borrel with on abrasive like crocus doth, emery d.th, steel w••I.r the like. This'd ruin the seH-deaning adion of the cutting edges on the rings. When you wont to deon .em, use bore deaner and rogs-ond nothing eke, hear? And prated those ring~. dragging .r bumping-they have t. he almost razor-sharp to do their job.

Waf'" Itris bcrby. " you I... the Ra.h hider, you'll I... the boo