U20-3, U25-3 WSM Hydraulic system (Service section)
IV-S-120
23. Fit the steel ball, spring, piston subassembly
and swash plate to the flange holder.
• Apply hydraulic oil to the sliding surface of
the swash plate.
(1) Swash plate
24. Attach the collar, spring and washer to the
cylinder block and fit the snap ring using the
mounting jig (see the figure below).
25. Apply grease to the pins and fit them into the
three holes in the cylinder block.
(1) Pin
26. Fit the retainer holder, retainer plate and piston
subassembly.
• Apply hydraulic oil to the nine holes in the
cylinder block.
(1) Retainer plate
(2) Retainer holder
(3) Piston assembly
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