U20-3, U25-3 WSM Hydraulic system (Service section)
IV-S-98
f. Traveling motor
[1] Mounting and dismounting the wheel motor
1) Mounting and dismounting the wheel
motor
1. Loosen the tension cylinder and remove the
crawler
CAUTION:
If you work together with a person to remove the
crawler, pay attention to the positions of your and
the person’s feet and hands.
2. Remove the motor cover and then remove the
high-pressure hose and drain hose, using a
vacuum pump.
3. Remove the wheel motor mounting bolt and
remove the wheel motor from the track frame.
• Tightening torque of motor (track frame,
sprocket):
166.7~196.1 Nâ‹…m (17.0~20.0 kgfâ‹…m)
Apply screw LOCTITE. (LOCTITE No. 271)
2) Reassembling procedure
1. When installing the wheel motor on the track
frame, face the port side to the front.
2. Face the motor drain hose upward and the
plug downward.
3. The hoses connected between the motor and
swivel joint should not be twisted or crossed
unduly in the track frame.
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