Toro 08743 - Attachment Lift;Lower Problems

AttachmentLift/LowerProblems
Problem
PossibleCauseCorrectiveAction
Enginespeedistoolow.Increaseenginespeed.
Liftarmsarebinding,wornordamaged.Inspectliftcomponentsandrepairor
replaceifnecessary.
Thehydraulicuidlevelinthehydraulic
tankislow(otherhydrauliccircuit
performanceisaffectedaswell).
Adjustthehydraulicuidlevel.
Therearliftcylinderreliefvalve(model
08743only)isfaulty.
Verifytherearliftcylinderreliefvalve
operation;refertoTestingtheSteering
andLiftCircuit–RearLiftCylinder
ReliefValveintheHydraulicSystem
chapterofthismanual.
Thesteeringreliefvalve(inthesteering
controlvalve–model08745only)is
faulty.
Verifythesteeringreliefvalveoperation;
refertoT estingtheSteeringandLift
Circuit–SteeringandLiftCircuitRelief
ValveintheHydraulicSystemchapter
ofthismanual.
Liftcylindercircuitpressureislow
(tractionchargeisaffectedandsteering
circuitformodel08745machinesis
affectedalso).
Verifychargepressure;refertoT esting
theTractionCircuit–ChargePressure
intheHydraulicSystemchapterofthis
manual.
Verifychargepumpperformance;refer
toTestingtheSteeringandLiftCircuit
–ChargePumpFlowandCircuitRelief
ValveintheHydraulicSystemchapter
ofthismanual.
Theliftcylinderisleakinginternally.T estandrepairorreplacethelift
cylinderifnecessary.
Liftcylinderswillnotraiseorraise
slowly.
Theliftvalveiswornordamaged.
Disassemble,clean,inspectandrepair
orreplacetheliftvalve.
Aliftcylinderisleakinginternally.Testandrepairorreplacethelift
cylinderifnecessary.
Liftcylindersraisebutwillnotstayup.
NOTE:Liftcylinderscannotprovidean
absolutelyperfectseal.Theliftarms
willeventuallylowerifleftsupporting
anattachmentintheraisedposition
duringstorage.
Theliftvalveiswornordamaged.
Disassemble,clean,inspectandrepair
orreplacetheliftvalve.
SandPro
®
3040and5040
Page3–9
Troubleshooting:AttachmentLift/LowerProblems
20251SLRevA