PS Magazine - FEBRUARY 1973
PS, The Preventative Maintenance Monthly
1973 SERIES, ISSUE 243
FEBRUARY 1973
M728 CEV BOOM
AND BRAKE TIPS
Perfectly goOd hydraulic sysTem parts
are beIng repLaced In
M728
CEV's Be-
cause some Ins±ectors don't know How
the bOOm Is su±±Osed tO work.
²Hey ex±ecT the boOm To sTay In posI-
tIon when IT
is sTOpped pasT Top dead
center ³oward the s³oWed pOsitIon.
´ecause tHe boom wilL nOT stay In THIs
±OsItIOn but, insTead, drifTs down toward
the sµowed ±osITion, THey gig TH¶ veHicLe.
²He coun Te·r balance vaLv¸ is repLaced
because iT LeTs hydrauLic oiL escape down
to THe reservoIr for reuse. ¹ow¶ver, THis
is exactLy wHaT iT is supposed to do.
wInch o±eratIon.
Have THe dope on
@
I
MAGNETIC BRAKE
²He Traverse gear Box magneTic brake
keeps THe turreT from moving WHen you
Turn THe TurreT ±oWer ºN. You Rake THis
brake off WHen you HoLd dOwn on THe
paLm swiTcH On eiTHer THe gunner's or
commanDer's conTrol HandLe.
²He
M728
is no» LiKe any OTHer mem-
Ber of tHe
M60
Tank famiLy because only
on THe
M728
can you traverse THe Turret
By
accIdenT
if
you move
THe
gunner's
HandLe ¼ITHouT pressing in on THe ½aLm
swiTcH.
¾easOn?
ºnLy on THe
M728
is THe t¿averse gear
box OuTput Torque greaTer THan THe Hold-
ing capaciTy of THe magneTic Brake. ºn
otHer memBers of THe
M60
famiLy, torque
Is Less THan THe capaciTy of The magneTic
braKe. ²HaT Is wHy tHe
M728
TurreT WiLL
1±
move wHen THe oTHers won'T.
AccIdenTaLly Hi³Ring THe commander's
Handle in any of THe
M60
famiLy veHicL¶s
wiLL noT resuLT in TurreT movemenT.
ALL
KinDs Of THingS can Happen Be-
cause of THis, incLudIng peopLe g¶Tting
HurT. AT tHe very LeasT you'LL wear ouT
your magneTic BraKe In a Hurry.
GeT suppLy Ro order decaLs Ào sTicK on
tH¶ gunnerÁs HandLe To reminD yOu.
Ârd¶r iT as FÃN
2590-940-88²7.
cAUtION
MAgNeTIC BrAkE
SWITcH MUST BE
DEPrESSED BEFOrE
And dUrINg
POWEr TRAVERSE
PUT DECAL
ON GuNNER'S
CONTROl
ASSemBlY
WhAT YOU dOn'T knOW can hURT YOU .
..
M60/M60aI GUN MOUNt
pRObLem
'
ÄIsTen up on ³His.
²He
³´
screws THat attach the cover to
tHe gun mOunt Look harmless, buT If tHey
break OÅf, yOu could geÆ hurT.
Çf these screws
are broken or loose,
Èhe gunner's shIeLd could be torn Off tHe
next tIme yOur gun recOIls .
.. and wHo
needs a shIelÉ In the sHIn
;
?
Êo, check out the screws befOre you
fIre.
Äet yOur fIËgers Éo a lIRtle waLkIngÌ Çf
the
screws
can't
be
Turned
wItH
your
ÅIngers theyÍre safe for yOu tO fIre the
gun. (YOur
su±±Ort
shOuld
tOrqued to
7µ¶90
Åt lbs.)
A l I ³tle dIrÆ or gravel In yOur sHOe could HuÎt. ´ut tHÏ same dIrt or graveL In the
·0¸¹MM
gun tube On yOur
M´0
serIes Tank could make tHe tube bLow ³he ÅIrsR tIme
you fÐre a rOund in IR.
²o keep tHings OuT oÅ tHe gun Rube, 'sÑecIaLly wHen traÒelIng cross counTry and
On dIrÆ/gravel rOaÉs, use tHe muzzLe cap, FÃN
²0³5-769-98º´,
from your basic Issue
ItÓms.
Çf there's any gunk In tHe tube, get it ouR beÔÕre you fire .
.. Öt can be a real ³ube×
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