Toro 08743 - Page 100

TestProcedure(continued)
A.Thepiston(traction)pumpchargereliefvalveisdamaged.Replaceor
repairthepumpchargereliefvalve;refertoServicingthePiston(traction)
Pump(page5–74).
B.Thein-linecheckvalve/tting(nearthepistonpumpsuctionport)isfaulty.
C.Thepiston(traction)pumpimplement/chargepump(P2)isfaulty(reduced
liftcircuitperformance(andsteeringcircuitperformanceonmodel08745
machines)willalsobeaffected.T esttheimplement/chargepump(P2)
ow;refertoTestingtheLiftandSteeringCircuit–Implement/Charge
Pump(P2)FlowandCircuitRelief(page5–40).
16.Sitintheoperator’sseat,releasetheparkingbrake,andapplyaloadtothe
tractionpumpbyslowlydepressingtheforwardtractionpedaluntil6200to
8275kPa(900to1200PSI)isreachedontheowmeterpressuregauge.
17.Recordreadingonpressuregaugeattheuidcooler(notthepressure
gaugeontheowmeter).
18.Releasethetractionpedal,movethethrottletolowspeedandsetthekey
switchtotheOFFposition.
19.Chargepressure(underload)shouldnotdropmorethan20%when
comparedtochargepressure(withoutload)recordedinstep15.
Ifspecicationsarenotmet,leavethetestequipmentinstalledandperform
thePiston(traction)Pump(P1)FlowandReliefPressureT estasdescribed
inT estingtheTractionCircuit–TractionPump(P1)FlowandReliefPressure
(page5–36).
20.Aftertesting:
A.Removethehydraulictesterandhosesthenreconnectthehydraulic
hoseandtubeabovethefrontwheelmotor.
B.Removethepressuregaugeandteethenreconnectthehydraulichose
attheuidcooler.
C.Checkandadjustthelevelofthehydraulicuidinthehydraulicreservoir;
refertothetractionunitOperator’sManual.
D.Starttheengineandcheckforanyhydraulicuidleaks.Repairhydraulic
leaksifnecessarybeforereturningthemachinetoservice.
HydraulicSystem:TestingtheHydraulicSystem
Page5–30
SandPro
®
3040and5040
20251SLRevA