DISASSEMBLY AND ASSEMBLY INSTALLATION OF HYDRAULIC CYLINDER ASSEMBLY
30-56
PC58UU-3
2
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).
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.
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