Procedure for Reel Motor Case Drain Check: 1. Make sure hydraulic oil is at normal operating temperature by operating the machine for approximately 10 minutes. Make sure the hydraulic tank is full. 2. Make sure machine is parked on a level surface with the cutting units lowered. Make sure engine is off and the parking brake is engaged. 3. Read Precautions for Hydraulic Testing. 4. For the suspected bad motor, disconnect return hose from motor that is used for mowing operation. 5. Install tester in series with the motor, and disconnected return hose. Make sure the flow control valve is fully open. 6. If a back lap kit is installed, make sure backlap knob on the valve block is in the mow position and reel speed is set to maximum. 7. Disconnect hose from case drain at the bulkhead fitting.
CAUTION Keep away from reels during test to prevent personal injury from the rotating reel blades. 9. Engage reels by positioning the functional control lever to MOW position. While watching pressure gauges, slowly close flow control valve until a pressure of 1000 PSI is obtained. 10. Collect hydraulic fluid for 15 seconds by putting the case drain hose into a 1 quart container graduated in ounces (1 liter container graduated in milliliters). 11. Disengage cutting units by positioning functional control lever to NEUTRAL position. Stop the engine. 12. Measure the amount of oil collected in the container. Divide the number of ounces collected by 32 to get gallons per minute. (Divide the number of milliliters collected by 250 to get liters per minute). 13. Disconnect tester from motor and hose. Reconnect hose to the pump.
B. Put case drain hose into suitable container for collecting case drain leakage.
14. Remove plug from manifold fitting. Reconnect case drain hose to the bulkhead fitting.
8. One person should sit on the seat and operate the machine while another person reads the tester and measures case drain leakage. Make sure functional control lever is in NEUTRAL. Start engine and move the throttle to full speed.
15. If flow was greater than 0.5 GPM (1.9 LPM), repair or replace the reel motor as necessary.
Hydraulic System
A. Plug the bulkhead port.
A. Units with a diesel engine (3025 " 50 RPM). B. Units with a gasoline engine (2800 " 28 RPM).
Greensmaster 3200/3200–D
Page 5 – 35 Rev. A
Hydraulic System