Track Shoe Bolts - Check/Tighten - Komatsu PC78US-6 Operation & Maintenance Manual

MAINTENANCE

Track Shoe Bolts - Check/Tighten

(Machine equipped with steel shoes, road liners)
If the machine is used with track shoe bolts (1) loose, they will
break, so tighten any loose bolts immediately
Method for further tightening of road liner
Tighten to a tightening torque of 196
144.7 14.5 lbft) then check that the nut and shoe are in close
contact with the link contact surface.
Method for further tightening of steel shoe
1. First tighten to a tightening torque of 118 19.6 N m (12 2 kgf
m, 86.8 14.5 lbft) then check that the nut and shoe are in
close contact with the link contact surface.
2. After checking, tighten a further 90
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.
19.6 N m (20 2 kgf m,
10 .
MAINTENANCE PROCEDURE
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