5-27
MAINTENANCE
EVERY 50 HOURS
3. Inspect the gap (A) between the bottom
surface of the frame at the center of the
crawler frame and the top surface of the
crawler.
The gap (A) must be within the following
range:
(A) Rubber crawler
55 to 60 mm (2.2 to 2.4 in.)
Adjustment
Increasing the tension
1. Remove the cover (1).
2. Inject grease through the grease fitting (3)
of the grease discharge valve (2) with a
grease gun.
3. Inspect the crawler tension.
Decreasing the tension
1. Remove the cover (1).
2. Slowly loosen (one turn) the grease
discharge valve (2) with a spanner to
discharge grease. If grease does not
come out well, move the machine back-
and-forth.
3. Tighten the grease discharge valve (2).
· Tightening torque:
59 to 88 N·m (43.5 to 64.9 ft-lb.)
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