Troubleshooting - Toro Greensmaster 3200 Service Manual

Troubleshooting

The charts that follow contain information to assist in
troubleshooting. There may possibly be more than one
cause for a machine malfunction.
Problem
Hydraulic oil leaks from system.
Hydraulic fluid foams.
Hydraulic system operates hot.
Neutral is difficult to find, or unit op-
erates in one direction only.
Traction response is sluggish.
No traction exists in either direction.
Wheel motor will not turn.
Greensmaster 3200/3200–D
Refer to the Testing section of this Chapter for precau -
tions and specific test procedures.
Possible Cause
Fitting(s), hose(s), or tube(s) are loose or damaged.
O–ring(s) or seal(s) are missing or damaged.
Oil level in reservoir is low.
Hydraulic system has wrong type of oil.
One of the pump suction lines has an air leak.
Transmission pressure is high due to load or brakes applied.
Oil level in reservoir is low, or inlet filter is loose or clogged.
Oil is contaminated or too light.
Heat exchanger (when installed) is damaged or plugged. By–pass
relief is stuck open or air flow is obstructed.
Charge pressure is low.
Towing by–pass valve is open or defective.
Wheel motor(s) or reel motor(s) are worn or damaged.
Traction pump is worn or damaged.
External control linkage is misadjusted, disconnected, binding, or
damaged.
Traction pump is worn or damaged.
Charge pressure is low. Hydraulic oil is very cold.
Towing by–pass valve is open or worn. Brake is not released.
Traction pump or wheel motor(s) are worn or damaged.
Brake is not released.
Oil level in reservoir is low.
Towing by–pass valve is open.
Charge pressure is low.
Traction pump or wheel motor(s) are worn or damaged.
Internal parts in wheel motor are damaged.
Brakes are binding.
Key on wheel motor shaft is sheared or missing.
Page 5 – 17 Hydraulic System