Check And Tighten Track Shoe Bolts - Komatsu PC308USLC-3E0 Operation & Maintenance Manual

MAINTENANCE

CHECK AND TIGHTEN TRACK SHOE BOLTS

If the machine is used with track shoe bolts (1) loose, they will
break, so tighten any loose bolts immediately.
Tightening
1. First tighten to a tightening torque of 392 ± 39.2 Nm (40 ± 4 kgm , 290 ± 30 lbft) then check that the nut and shoe
are in close contact with the link contact surface.
2. After checking, tighten a further 120° ± 10°.
Order for Tightening
Tighten the bolts in the order shown in the diagram on the right.
After tightening, check that the nut and shoe are in close contact
with the link mating surface.
MAINTENANCE PROCEDURE
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