Troubleshooting; Troubleshooting; General Hydraulic System Problems - Toro Greensmaster TriFlex 3300 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.

General Hydraulic System Problems

Problem
Hydraulic oil leaks from system.
Hydraulic fluid foams.
Hydraulic system operates hot.
Hydraulic System
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.
The pump suction line has an air leak.
Oil level in reservoir is low or inlet filter is loose or clogged.
Oil is contaminated or too light.
Parking brake is applied or incorrectly adjusted.
Piston pump by--pass valve is open or defective.
Working load of machine may require use of oil cooler.
Oil cooler (if installed) is damaged or plugged.
Oil cooler (if installed) by--pass relief is stuck open or air flow is ob-
structed.
Charge pressure is low.
Wheel motor(s) or reel motor(s) are worn or damaged.
Piston pump is worn or damaged (see Piston (Traction) Pump Flow
Test in the Testing section of this chapter).
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