Komatsu PC200-8M0 Shop Manual page 1089

500 Hydraulic system
Disassembly and assembly of control valve
4. Repeat the same process to install another
seal (6). Place tool T3 on the same end of pis-
ton (2). Slowly push seal (6) down in such a
way that it expands evenly to install it in posi-
tion.
a Put the seal on the tool and push it down
to the flat part of the tool. Then you may
install the tool to the piston to push in the
seal further.
5. Install settling tool T4 on piston (2) and keep it
installed for approximately one minute so that
seals (5) and (6) fit in.
a Check that there is no extrusion or cut on
the seal.
6. Fit plug (3) and spring (4) to piston (2), then
install pressure compensation valve (1).
PC200, 200LC, 220, 220LC-8M0
a After the installation, push piston (2) by
hand and check that the piston returns
with the spring force alone.
SEN06146-00
15
50-500