General Information; Traction Unit Operator's Manual; Relieving Pressure From The Hydraulic System - Toro Greensmaster 3120 Service Manual

General Information

Traction Unit Operator's Manual

Relieving Pressure from the Hydraulic System

Hydraulic System: General Information
The traction unit and cutting unit Operator's Manuals provide information
regarding the operation, general maintenance and maintenance intervals for
the Greensmaster 3120 machine. Refer to these publications for additional
information when servicing the machine.
Release all the pressure in the hydraulic system before performing any work on
the hydraulic system.
Note: If you park the machine on an incline or slope, the pressure in the traction
circuit does not release.
1. Move the machine to a level surface.
2. Lower the cutting units fully.
3. Engage the parking brake.
4. Turn the key switch to the OFF position and allow the engine to stop.
5. Make sure all electrically operated control valves are actuated by setting the
key switch to the RUN position but Do Not start the engine.
6. Press the traction pedal to the full FORWARD and the full REVERSE
positions.
7. Move the joystick to the RAISE and LOWER positions
8. Turn the steering wheel in both the LEFT and the RIGHT directions.
9. Turn the key switch to the OFF position.
Note: Turning the steering wheel with the engine off may unseat the relief valve
in the steering control valve. If the steering or the lift circuits appear sluggish or
inoperative after the machine is returned to service, repeat relieving the hydraulic
system pressure procedure.
Page 4–4 Greensmaster 3120
17230SL Rev C