U20-3, U25-3 WSM Hydraulic system (Service section)
IV-S-43
D.Disassembling and Assembling
a. Pump
[1] Pump coupling
1) Disassembling the pump
1. Bring the attachments down to the ground and
stop the engine.
2. Open the bonnet, remove the bonnet left cover
and dismount the muffler.
3. Mount a vacuum pump and disconnect the
hydraulic hose and suction hose from the
pump.
4. Remove the two pump mounting bolts.
Tightening torque of bolt:
77.5 ~ 90.2Nâ‹…m (7.9~9.2kgfâ‹…m)
5. Pull the pump assembly toward the
counterweight, separate it from the pump
coupling and dismount it.
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