Toro Groundsmaster 3500 30807 Service Manual page 102

NOTE: The relief valve setting is 3500 PSI (241
Bar). An additional 100 to 150 PSI (6.9 to10.3 Bar)
is necessary to overcome system charge pressure
before the relief valve opens.
E. Release traction pedal, open flow control valve
fully, move throttle to low speed and turn the engine
off.
14.If relief pressure can not be met or is greater than
specified, the traction relief valve is faulty and should be
replaced.
Hydraulic System
15.The Under Load test flow reading (step 12.) should
not drop more than 12% when compared to the No
Load test flow reading (step 11.). A difference of more
than 12% may indicate:
A. The traction belt is worn and/or slipping.
B. The piston pump/hydrostat (P3) is worn and
should be repaired or replaced.
16.Disconnect tester and reconnect hose to pump.
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