2-44 Published 11-22-2016, Control # 345-12
HYDRAULIC SYSTEM RT9130E-2 SERVICE MANUAL
HYDRAULIC REMOTE CONTROL VALVE
Single Axis Control Valves
The crane has four single axis hydraulic remote control
valves Figure 2-25. 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 telescope or optional auxiliary hoist.
If equipped with optional 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, if
the operator leaves the seat, the controller lockout valve is
de-energized and the functions are disabled.
Dual Axis Control Valves (Optional)
The two hydraulic remote control valves are dual function
type valves. Moving the control lever forward or back
operates the selected function, moving the lever side to side
operates another function. One valve is located in each
armrest. The valve in the right armrest controls the main
hoist and boom lift.
If the crane doesn’t have an auxiliary hoist, the valve in the
left armrest controls swing and boom telescope.
If the crane has an auxiliary hoist, the valve in the left armrest
controls 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, if
the operator leaves the 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 fully out and then the fully back
in. Verify proper telescoping.
3. Check valve and lines for leakage. Make repairs as
needed.
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