U20-3, U25-3 WSM Hydraulic system (Service section)
IV-S-78
d. Swivel motor
[1] Mounting and dismounting the swivel motor
1) Dismounting the swivel motor
1. Let out the hydraulic oil.
2. Remove the steps.
3. Remove the related wire harnesses for
dismounting the seat stand.
4. Dismount the left pilot valve from the operation
panel.
5. Dismount the left operation panel together with
the seat stand.
6. Be careful not to bend the pilot hose.
7. Disconnect the panel related wire harnesses
and cables.
8. Remove the bolts which fix the right operation
panel and seat stand. Tilt the seat stand
forward, paying attention not to bend the pilot
hose. Confirm the safety.
9. Dismount the seat stand.
10. Disconnect the return hose and return pipe
running between the swivel and the control
valve.
11. Remove the hose guide fixing bolts. (Make the
guide free beforehand.)
12. Disconnect the brake release hose.
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