Komatsu PC200-8M0 Shop Manual page 1105

500 Hydraulic system
Disassembly and assembly of work equipment cylinder
Assembly of cylinder head
1. Using tool U5, press fit bushing (20).
2. Install snap ring (30).
3. Install buffer ring (19) and rod packing (18).
4. Install dust seal (17) using tool U6, and install
snap ring (16).
5. Install backup ring (15) and the O-ring.
PC200, 200LC, 220, 220LC-8M0
Assembly of piston
1. Set piston ring (13) on tool U3. Expand piston
ring (13) by turning the handle 8 to 10 turns.
2. Remove piston ring (13) from tool U3. Install
the ring to the piston.
3. Using tool U4, compress piston ring (13).
4. Install two backup rings (14) and the O-ring.
a Install the backup rings and O-ring as
shown in the figure below.
5. Install wear rings (12) (2 pieces).
6. Install wear rings (11) (2 pieces).
a Be careful not to open the end gap of the
ring too wide.
SEN06146-00
31
50-500