PS Magazine - FEBRUARY 1979
PS, The Preventative Maintenance Monthly
ISSUE 315
FEBRUARY 1979
1
T130·t±3²E³
´rack GAge
No more guessing
shoe bushing wear.
ThEre's a new special tool being added to youR
Bii
for M113·series
vehicles. It±llgagedrivesprocket²ooth wear, track shoe bushing wear anD
track tension³
You use it like so:
´rive the vehicle forward onto a
hard surface anD let it roll to a stop-
withoUt using the brakes.
µemove the track shrOuD¶ Cl¸an ¹ut
the Dirt anD crud froº the track sho¸
Pin holes on the outboard siDe.
Measure tHe trAck tension»for alL
vehicles except the M548 and M730»
by
putting
the
gage
between
the
second roadwheel and ¼he track. ½f t¾e
gage wil¿ fit, the tension is
OK.
½f the
gage wonÀt go, the track is too loosÁ.
Checking
M548
±
and
M730
track· teNsioN
Track tension for
M730 is measuÂeD By holDing the gage
against the track Ãt the centerline of
the
s¸conD
roaDwh¸el.
The
ÄoÃD
surface of the roaDwhe¸l must show in
the ÅÆin hole. ½f it doesnÇt, th¸ track is
too loÈse.
M¸asure track shoe Bushing Wear
on the stÄaight
i
inÉ of the track. ´o
not try Êto m¸asËr¸ th¸ shoes going
ÌrounD the DÄive sprocket.
If you can put the Dowel pins ofÍthe
gage in the bushing bore from shoe to
shoe, the bushings are
OK±
µeplace
shoes that ÎonÇt pass this test.
Measure tÏe sprocket wheel tootÏ
wear by resting the gage on
2
screws
with the point alineD with the tooth.
The width of the tooth must exce¸D
Ð
tÏe
²
Dth of the
G
ag¸
_
.Ñ
±²
G
!a³g
´µ
i N
¶
g
¸¹
d
º
Riv
=e».'
rocKet tooth¼ War
7
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