Published 08-25-09, Control # 077-04 2-41
RT9130E SERVICE MANUAL HYDRAULIC SYSTEM
HYDRAULIC REMOTE CONTROL VALVE
Description
The crane has four single axis hydraulic remote control
valves (Figure 2-24). Each crane function has a control lever
for the operator’s use.
The four hydraulic remote control valves are single function
type valves. Moving the control lever forward or back
operates the selected function. Two valves are located in
each armrest. The valves in the right armrest control the
main hoist and boom lift. The valves in the left armrest
control swing and auxiliary hoist.
The telescope function is controlled by a pedal operated
single function control valve. The pedal is on the cab floor.
The control valve is mounted on the left rear underside of the
cab and is connected to the pedal by linkage.
When the armrests are up, the crane function switch is off, or
the operator leaves his seat, the controller lockout valve is
de-energized and the functions are disabled.
Maintenance
Armrest Control Valve Removal
1. Gain access to the base of the control valve by raising
the armrest and removing the plastic cover screwed
onto the bottom of the armrest.
2. Tag and disconnect the hydraulic lines to the control
valve. Cap or plug the lines and ports.
3. Remove the bolts securing the control valve to the
armrest. Remove the control valve.
Armrest Control Valve Installation
1. Place the valve on the armrest. Secure the valve to the
armrest with the attaching bolts.
2. Connect the hydraulic lines to the valve as tagged during
removal.
3. Install the plastic cover on the bottom of the armrest.
Secure it with screws, washers and nuts.
Armrest Control Valve Functional Check
1. Start the engine and run it at normal speed.
2. Move each control lever to operate the function
controlled by the corresponding control valve. Verify
proper operation of the hoist motor, swing motors, lift
cylinder, and telescope cylinder.
3. Check valve and lines for leakage. Make repairs as
needed.
Telescope Pedal Control Valve Removal.
1. Disconnect the pedal linkage from the control valve by
removing the pin and cotter pin.
2. Tag and disconnect the hydraulic lines from the control
valve. Cap or plug the lines and ports.
3. Remove the four bolts and washers securing the control
valve to the mounting bracket. Remove the valve.
Telescope Pedal Control Valve Installation
1. Place the valve on the mounting bracket and secure in
place with the bolts and washers.
2. Connect the hydraulic lines to the valve as tagged during
removal.
3. Connect the pedal linkage to the control valve with the
pin and cotter pin.
Telescope Pedal Control Valve Functional Check
1. Start the engine and run it at normal speed.
2. Telescope the boom the whole way out and then the
whole way back in. Verify proper telescoping.
3. Check valve and lines for leakage. Make repairs as
needed.
To Next Page
Loading...
