Greensmaster 3250--D Hydraulic SystemPage 4 -- 2 3
Troubleshooting
The charts that follow contain information to assist in
troubleshooting. There may possibly be more than one
cause for a machine malfunction.
Refer to the Testing section of this Chapter for precau-
tions and specific test procedures.
General Hydraulic System Problems
Problem Possible Cause
Hydraulic oil leaks from system. Fitting(s), hose(s) or tube(s) are loose or damaged.
O--ring(s) or seal(s) are missing or damaged.
Hydraulic fluid foams. Oil level in reservoir is low.
Hydraulic system has wrong type of oil.
Pump suction line has an air leak.
Hydraulic system operates hot. Oil level in reservoir is low.
Suction screen in reservoir is loose or clogged.
Oil is contaminated or too light.
Brakes are binding or are incorrectly adjusted.
Piston pump by--pass valve is open or defective.
Oil cooler (if installed) is damaged or plugged. By--pass relief is
stuck open or air flow is obstructed.
Working load of machine (e.g. high ambient temperatures, use of
verticutter) may require use of oil cooler.
Charge pressure is low (see Charge Pressure Relief Valve Pres-
sure Test).
Wheel motor(s) or reel motor(s) are worn or damaged (see Wheel
Motor Efficiency and Reel Motor Case Drain Flow Tests).
Piston (traction) pump is worn or damaged (see Piston (Traction)
Pump Flow Te st).
Hydraulic
System
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