Installation Of Hydraulic Cylinder Assembly - Komatsu PC58UU-3 Shop Manual

DISASSEMBLY AND ASSEMBLY
12

INSTALLATION OF HYDRAULIC CYLINDER ASSEMBLY

Apply engine oil to the sliding surface of each
part. Take care not to damage the packing,
dust seal or O-ring.
Do not forcibly insert the backup ring. Heat
the backup ring in hot water approximately
(50 to 60°C), then insert it.
1. Press fit bushing (14) into the cylinder head
using tool U4.
2. Install dust seal (12) using tool U5.
3. Secure dust seal (12) using snap ring (11).
Install rod packing (13), then install O-ring
(10) and backup ring/O-ring (9).
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2
INSTALLATION OF HYDRAULIC CYLINDER ASSEMBLY
4. Set piston ring (8) on tool U6 and widen it by
turning the handle 8 to 10 times.
5. Retract piston ring (8) using tool U7.
Tool and cylinder combination
U7: boom/blade cylinder
U9: arm/offset cylinder
U10: bucket cylinder
(U8: for second boom cylinder)
6. Install wear ring (7).
Take care not to widen the abutment joint
of the ring too much.
PC58UU-3