Installation; Control Valve - Komatsu PC20R-8 Shop Manual

REMOVAL AND INSTALLATION
6 - Put a sling around the control valve group (10) and
connect it to some hoisting tackle.
7 - Take out the screws (11) and remove the control
valve group complete with its support.
Accompany the command cable.
H Mark the cable to avoid exchanging them during
re-assembly.
Control valve group: 31 kg
INSTALLATION OF THE

CONTROL VALVE

To install, reverse the removal procedure.
.
1 - Fill the tank with hydraulic oil up to the maximum le-
vel.
Hydraulic oil: approx. 29
2 - Start the engine at low idling to circulate the oil
throughout the system.
3 - Pressurise the tank and bleed air from all circuits.
(For details, see «20. CONTROLS AND ADJUST-
MENTS»).
H Adjust the travel control lever, blade control lever
and boom swing control pedal stroke.
(For detail, see 20. CONTROLS AND ADJUST-
MENTS).
PC20R-8 PC27R-8
,
CONTROL VALVE
11
10
RKPA3080
30-35