MAINTENANCE PROCEDURE MAINTENANCE
4-30
16. Open the rear engine hood, drain the water from sub-tank
(8), wash the inside of the sub-tank, then add water to a
point between the FULL and LOW marks.
q If the sub-tank is extremely dirty and it is difficult to
clean, replace it with a new part.
17. Stop the engine, wait for approx. 3 minutes, add city water
up to near the mouth of the filler port, then tighten radiator
cap (3).
18. Install cover (2).
19. Close the engine hood.
CHECK AND TIGHTEN TRACK SHOE BOLTS 4
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), then check that the nut and shoe are in tight
contact with the link mating 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.
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