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4.5.3.3 Check and fasten track bolt.
If operating machine with bolts loosened,
there is hazard that the bolts will rupture. Therefore
the loosened bolts should be fastened.
Tightening method
Track shoe
1) Tighten at torque 490 ± 49 N m (50 ± 5 kgf m,
360 ± 36 lbft), then check to make sure that
nuts contact with track link surfaces securely.
2) After checking, retighten 120° ± 10°.
Rubber block ( if mounted)
1) Tighten at torque: 549 ± 59 N m (56 ± 6 kgf
m, 405 ± 43 lbft).
2) After tightening, check to ensure that nut and
track link contact surface contact against each
other securely. .
Tighten sequence
Tighten bolts in the sequence given in right
fig.
With bolts tightened, check bolts and track
link mating face to ensure they contact
securely.
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