Check And Tighten Track Shoe Bolts - Komatsu ecot3 Operation And 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
Triple shoe, swamp shoe, flat shoe, rubber pad shoe
1. First tighten to a tightening torque of 490 ± 49 Nm (50 ± 5 kgm, 360 ± 36 lbft) then check that the nut and shoe
are in close contact with the link contact surface.
2. After checking, tighten a further 120 degrees ± 10 degrees.
Road liner
Tighten to a tightening torque of 550 ± 60 Nm (56 ± 6 kgm , 405.0 ± 43.4 ibft).
After tightening, check that the nut and shoe are in close contact with the link contact surface.
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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