PS Magazine - SEPTEMBER 1983
PS, The Preventative Maintenance Monthly
ISSUE 370
SEPTEMBER 1983
.
Replacing worN parts and keeping
the right tension will go a long way
toward ke
.
eping your trAcks
tracking±
²fter you've marked dEfective
parts for repair or replacement,
make sure you break track the right
wAy, do thE worK right and put
everything back together again so
it'Ll last±
Move thE tank uNtil the bad part is
betweeN the compensating idler and
the ³o±
I
roadwheel±
´oosEn the lockInG screw on the
Loosen
locking
screw
track tensµon adjusting link± WitH
thE track link adjusting wrEnch,
loosEn track tension±
(³ote: You don't need to break-
disconnect¶track to replace an end
coNnector, but you must use the
trAck fixtures± You don't have
loosen or remove end connEctors
just to replace a center guide±)
REmove the end connector
·
bolt
and wedge±
Use the mechanical end connector
puller, ³S³ 5120¸01¸040¸9318¹ ºt's
Use mechanical pu±ler .
..
part of your tank's basic issue itEms±
Pull out the end connectors on each
side about
I
inch± Don't pulL it oF
completely! The ceNter guide will be
all
that's
hol»ing
the
track
together¼aNd it might not hold±
ºf
you
get
a
stubborn
End
conNector, borrow your mechanic's
hydraulic
End
pullEr,
³S³ 5120½01¾052¸5642¿ ÀÁ'saspecial
tool
Â
Authorized in yoÃr tank's Ä20P
TM±
Put one track Åixture on each side
of the track± Make sure the jaws are
Ælush against the hoe± Tighten the
fixtures until the jaws are firmly
clampEd on the track shoe pins±
Tighten Each fixture alteÇnately
Y
to
y
turn until the End
connectors can be removed± Èf you
tighten one side too much, Éou put a
Lot of stress on the shoe pins± They'lL
biNd iÊ tHE end connEctor making it
hard to get oF±
³ext you take off the centEr guide
nut and the ceNter guide±
-
.±² "³-T
"
´oosen the fixtures aLtErnately
until tHe track is Loose± Support the
trËck witH the tanker's bar± TAKe oÌÆ
the fixtures and ÍowEr the track to
the ground±
Track shoes come in sections of 8
sHoEs¼and that's the way some
crewmen put Îem on± This wastes
track± REplAce onLy the defective
shoes± ²nd don't toss out good End
connectors, wedges, pAds or centEr
guIdes± You can use Ïem again±
Whe
you replace track Ðshoes,
make sure the rubber pads oN the 2
shoes on either side arE about tHE
same height± Èf they're not, the new
pa»s will get chEwed up right away±
When you replace pads, always
put them on in sets of 2 ±±± on the
same shoe± Try to match the pads so
you end up with about 4 or 5 shoes iN
a row with pads all about the same
Height± You may have to Juggle some
pads around to make it come out
right± Èf you tAnkErs take along some
new pads and some used pads, itÑll
help keep things evened out±
Track Drive Sprockets
Take a look at the outboard drive
sprockets± ºf they have builtÒin wear
iNdicatorsÓ see if the undercut is
worn away± There are undercuts on 2
adjoining teeth± ºf aN undercut is
worn on one tooth, both drive
sprockets on that si»e of thE tank
13
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