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ImplementReliefPressureTest(UsingPressureGauge)(Machine

SerialNumbersbelow316000000)

g230803

Figure61

1.Seatbaseopening

3.Pipeplug

2.Checkvalve4.Implementreliefvalve

g230804

Figure62

1.Reliefvalve

Theimplementreliefpressuretestshouldbedoneifaproblemissuspected

withtheimplementreliefvalve.

Note:WhenconductingtheImplementReliefPressureT est,usea34,500kPa

(5,000psi)PressureGauge.

1.Performsteps1through8oftheChargePressureT est(UsingPressure

Gauge)(MachineSerialNumbersbelow316000000)(page5–49).Ensure

tousea34,500kPa(5,000psi)PressureGauge.

2.Withtheenginerunningat3,200rpm,movetheliftcontrollevertotheRAISE

positionandallowthecuttingunit(orimplement)tofullyraise.Continueto

holdtheleverintheRAISEpositionandobservethepressuregauge.The

pressurereadingshouldbefrom4,820to6,900kPa(700to1,000psi)asthe

implementreliefvalvelifts.

3.MovetheliftcontrollevertotheLOWERpositiontolowerthecuttingdeck(or

implement)totheground.Shutofftheengine.Recordtestresults.

Groundsmaster

3280-D/3320

Page5–51

HydraulicSystem:TestingtheHydraulicSystem

05138SLRevB

Toro 30403 Service Manual

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