Toro 04384 Service Manual

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Contents

Greensmaster 3250--D Hydraulic SystemPage 4 -- 47Procedure for Reel Motor Case Drain Flow Test1. Make sure hydraulic oil is at normal operating tem-perature by operating the machine for approximately ten(10) minutes. Make sure the hydraulic tank is full.2. Park machine on a level surface with the cutting unitslowered. Make sure engine is off and the parking brakeis engaged.CAUTIONBefore continuing further, read and become fa-miliar with Precautions for Hydraulic Testing.3. For the suspected faulty cutting reel motor, discon-nect return hose from motor. The return hose is con-nected to the rear fitting on the reel motor.4. Install tester with pressure gauge and flow meter inseries with the reel motor and the disconnected returnhose. Make sure the flow control valve on the testeris fully open.5. Make sure that reel speed is set to highest speed set-ting (fully open) and that backlap knob on the hydraulicmanifold is in the mow position.6. Disconnect hose from case drain of the motor to betested at the bulkhead fitting.A. Plug the bulkhead port.B. Leave the case drain hose from the motor openand place open end of disconnected hose into adrain pan.7. One person should sit on the seat and operate themachine while a second person measures case drainleakage. Make sure functional control lever is in NEU-TRAL. Start engine and move the throttle to high idlespeed (2710 + 50 RPM).CAUTIONKeep away from reels during test to prevent per-sonal injury from the rotating reel blades.8. Move the functional control lever to MOW positionand then engage reels with joystick. While watchingpressure gauge, slowly close flow control valve on thetester until a pressure of 1000 PSI (69 bar) is obtained.9. After achieving 1000 PSI (69 bar), place discon-nected motor case drain hose into a container gra-duated in ounces or milliliters (e.g. Toro #TOR4077) andcollect hydraulic fluid for fifteen (15) seconds. After fif-teen (15) seconds, remove hose end from container.10.Disengage cutting units, open control valve on testerand then stop the engine.11. Identify amount of oil collected in the container. Re-cord test results.12.If flow was greater than 16.0 ounces (473 millili-ters) (0.5 GPM/1.9 LPM), repair or replace the reel mo-tor as necessary.13.When testing is complete, disconnect tester fromcutting reel motor and return hose. Reconnect hose tothe motor.14.Remove plug from bulkhead fitting. Reconnect casedrain hose to the bulkhead fitting.15.Test other cutting reel motors as needed.Figure 27HydraulicSystem