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MAINTENANCE
WHEN REMOVING TRACK
Depending on the situation, the operation to remove the track may be extremely dangerous.
Before removing the track, if the procedure "WHEN LOOSENING TENSION (PAGE 4-32)" does not loosen the track tension, ask
your Komatsu distributor for repairs.
CHECK AND TIGHTEN TRACK SHOE BOLTS
If the machine is used with track shoe bolts being loose, they will break, so tighten any loose bolts immediately.
METHOD OF TIGHTENING SHOE BOLT
1. First tighten to a tightening torque of 785 ± 78.5 Nm (80 ± 8 kgm, 579 ± 57.9 lbft) and then check that the link
contact surfaces are in colse contact.
2. After checking, tighten a further 180 deg. ± 10 deg.
METHOD OF TIGHTENING MASTER LINK CONNECTING BOLT
1. Tighten first to a tightening torque of 980 ± 98 Nm (100 ± 10 kgm, 723.3 ± 72.3 lbft), then check that the link
mating surface is in close contact.
2. After checking, tighten a further 180 deg. ± 10 deg.
ORDER FOR TIGHTENING
Tighten the bolts in the order shown in the diagram on the right.
WARNING
SERVICE PROCEDURE
4 - 33
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