Manitowoc Grove RT770E - Page 79

2-39
GROVE
RT770E HYDRAULIC SYSTEM
2
Published 11/26/2014, Control # 447-05
Telescope Pedal Control Valve Removal (With
Auxiliary Hoist Option)
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 (With
Auxiliary Hoist Option)
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
(With Auxiliary Hoist Option)
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.