Grove Published 01-29-2015, Control # 512-01 2-29
TMS700E SERVICE MANUAL HYDRAULIC SYSTEM
center directional valve. It is plumbed in parallel with the
boom lift/telescope/hoist directional control valve. The inlet
section contains a load sense relief valve set at 103.43 bar
(1500 psi) protecting all four working sections.
The auxiliary water jacket cooler directional valve is a
solenoid operated two position, two-way valve. It is plumbed
in parallel with the auxiliary water jacket cooler motor. When
it is in the normal (de-energized) position, the valve is closed
forcing all of the oil flow to run through the auxiliary water
jacket cooler motor. When the valve is energized, oil can flow
through the valve allowing it to bypass the motor. Energizing
of the valve is controlled by the engine ECM.
Maintenance
Swing Valve Bank Removal
1. Tag and disconnect the hydraulic lines from the valves.
Cap or plug the lines and ports.
2. Remove the three bolts, flatwashers, and spring
lockwashers securing the valve bank and remove the
valve bank.
Swing Valve Bank Installation
1. Place the valve bank on the turntable upright and secure
it with the bolts, flatwashers, and spring lockwashers.
2. Connect the hydraulic lines to the valves as tagged
during removal.
Hoist/Lift/Telescope Valve Bank Removal
1. Tag and disconnect the hydraulic lines from the valves.
Cap or plug the lines and ports.
2. Tag and disconnect electrical connectors from the valve.
3. Remove the three bolts, flatwashers, and spring
lockwashers securing the valve bank and remove the
valve bank.
Hoist/Lift/Telescope Valve Bank Installation
1. Place the valve bank on the turntable upright and fasten
it with the bolts, flatwashers, and spring lockwashers.
2. Connect the electrical connectors to the valve as tagged
during removal.
3. Connect the hydraulic lines to the valves as tagged
during removal.
Counterweight Removal Valve Bank
Removal
1. Tag and disconnect the hydraulic lines from the valves.
Cap or plug the lines and ports.
2. Tag and disconnect the wires from the valves.
3. Remove the three bolts and nuts securing the valve
bank to the mounting bracket and remove the valve
bank.
Counterweight Removal Valve Bank
Installation
1. Position the valve bank on the mounting bracket and
secure with the three bolts and nuts.
2. Connect the wires to the valves as tagged during
removal.
3. Connect the hydraulic lines to the valves as tagged
during removal.
Functional Check (All Valve Banks)
1. Start the engine and run it at normal speed.
2. Operate the control panel. Check for smooth operation
of cylinders and motors.
3. Check the valve bank(s) and lines for leakage. Make
repairs as needed.
Functional Check (RCL Lockout Valves)
1. Remove circuit breaker CB11 from the circuit breaker
panel in the superstructure cab. This cuts off power to
the RCL.
2. Start the engine.
3. Try to telescope the boom out, lower the boom, hoist up
the main hoist, and hoist the auxiliary hoist up (if
installed). Verify none of these functions work.
4. Shut down the engine. Reinstall CB11.
5. Telescope the boom out, lower the boom, hoist up the
main hoist, and hoist the auxiliary hoist up (if installed).
Verify all of these functions work.
6. Check for leaks. Make repairs as needed.
Reference Only