PS Magazine - SEPTEMBER 1983
PS, The Preventative Maintenance Monthly
ISSUE 370
SEPTEMBER 1983
Replace
when
grouser
begins
to mark
road
•
Check
for
missing
or
worn
track
pads on Tl42 track. No
need
to
repLace
pads
±
For
chunking.
Rep²ace
'em
onLy
when
the
grouser
begins
to
mark a pavEd road.
SECOND ±HECK
•
Keep
the
front
ground
guide
And driver in tHe same positions
as in the first check.
•
The
No.
3
and
4
men
each
observe a front idLer. THey both
watcH the center guides as they
pass between the compensating
idLer and
the
No.
I
roadwheeL
wHiLe the driver moves tHe tank
forward.
•
Check
for
missing,
bent,
broken, cracked, worn or Loose
center
guides.
If
either
inspec³or
fi´ds
any,
signaL
the
ground guide to Have tHe driver
stop the tank. Mark the center
g u i d e
a n d
o u t b o
µ
a rd
e n d
connector for repair reference.
•
¶fter you·ve finished up, check
the
worn
center
guides
again.
RepLace
any
guide
worn
Less
than
one-haLf
inch
tHick
(measured
I
i´cH From the toP)¸
Measure
here.
1 Inch
d²wn
fro³ top
TH´µD ±¶ECK
Lower than tHe shoes next to it¹
Dead shoes are caused By worn
Bushings or broken shoe pins.
•
If yoU find shoes tHat Look dead
bUt youºre not sure» get the
track bushing wear gage your
mechanic made For you.
I
-4 21/32"±
-
²·³´µ.¶¸
¹ºo
}f
·¸¹BAº V»¼½¾L»¿ ÀÁÁ
Grounding FoRget-Me±Not
-±²
ÂÃ
!
WAiT»¼½
¾
¿
ÄUÅÆ
"ÇÈ
PÉÊË'Ì ÍÎÏGÐÑ
Ò
0ÓÔÕÖJ×?
ÀÁÂ Ã
·
Just
dropped
tHe
powerpack
i´to your co¼b½t vehicLe?
¾id You
rememBer to ¿ook up the grou´d straps or ÀaBLes?
¶ missi´g or uncon´ected ground strap or cabLe ca´ reaLLy mess up your
eLectricaL syste¼, especiaLLy your generator.
Most co¼bat vehicLes have at Least o´e grou´d strap run´i´g from the
pack to the huLL. ¶ few, Áike M60-series tanks, Have 2 grou´d cabLesÂat tHe
generator
and
starter.
THey
are
co´nected
to the powerpack quick
disconnect, but Have no grou´d strap connected to the huLL.
So iF your vehicLe is ¼issi´g a cabLe or strap, order it. The´, keep aLL of'em
tight at both e´ds.
Ãou·LL aLso Have eLectricaL probLe¼s if your Batteries are in Bad shape.
CHeck 'em out against TM 9-61Ä0-200-1Ä for Lead-acid batteries.
Åe sure youÆve got a matched set witH not more than 25 specific gravity
points or 0.5 voLt difference between batteries.
Pa²kI³´ BµaKE ma¶³T·³a³c·
•
The driver and the front ground
guide keep their same positions
for
this
cHeck.
The
inspectors
move to tHe rear of the tank near
the
drive
Ç
sprockets. They both
watcH the track as it passes over
the
support
roLLers.
Check
for
dead shoes as the driver moves the
tank forward. ¶ dead shoe rides
unevenLyÈ
Ä
end or both e´ds are
-ØÙÚÚ
NeeÉ heLp repLacing the parÊing braÊe cabLe oË yoÌr ÍÎ8/ Í6ÏÐseriÑs
tanÊÒ Got other probLems WitH tHe ParÊiËg braÊe sÓstem aËd its
ÔaintenanceÒ Õheck out ÖÅ 9-23ÏÏ-Î2Ï×2ÏÐ1Ø ÙtÚs ÛÌLL oÛ gooÉ inÛO tÜat caË
save you tÝme anÉ Ôoney.
Ûhis point at
the cÜa mÝ er oF
pin and b²re
Þhis point
touches end
connector pin
10
ÅÆ8Ç
steel
or
staÈnLess steel
¸
7
ÞLace
Ä
point oF the gage on
the chamfßr at the end of tàe Pin
in the suspect sHoe and the other
point on the other shoe pin¸ áhen
the gage wonÆt Fit on the pin and
stay inside the end connector pin
bore, the busHings are badâ
repLace the shoe.
É
¹a³k AOºp U»DaT·
Remove the oiL sampLing vaLve From aLL M48 ã Í6Ï×series tank engiËes
before you turn them in For rebuiLd. äHe vaLves are oÌt oF stock» so tàe
engine you receive From depot probabLy wonÆt have a vaLve instaLLed. åse tÜe
ones you removed to get your engines back on the program¸ æePots wiLL add
the vaLve during rebÌiLd when vaLves becoÔe avaiLabLe.
11
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