Toro Groundsmaster 360 - Steering and Lift;Lower Circuit Problems

SteeringandLift/LowerCircuitProblems
Problem
PossibleCauses
Thegearpumpisnoisy(cavitation).•Thehydraulic-uidlevelinthehydraulictankislow.
•Thehydraulicuidisverycold.
•Thesuctionlineisrestricted.
•Thereisanairleakinthesuctionline.
Steeringissluggishordoesnotoperate.•Thesteeringcomponents(e.g.,steeringforks,steering
arms,tierods,steeringcylinderends)arebindingandneed
tobegreased.
•Thesteeringcomponents(e.g.,steeringforks,steering
arms,tierods,steeringcylinderends)arewornordamaged.
•Thesteeringcylinderisbinding(e.g.,bentrodonthe
steeringcylinder).
•Thehydraulic-uidlevelinthehydraulicreservoirislow
(otherhydraulicsystemsareaffectedaswell).
•Theimplementreliefvalveinthegearpumpisstuckor
damaged.
•Thesteeringcylinderisleakinginternally.
•Thesteeringcylinderinternalre-phasingvalveisstuck,
worn,ordamaged.
•Thesteeringcontrolvalveiswornordamaged.
•Thegearpumpiswornordamaged.
Note:Awornordamagedgearpumpwillalsoaffectthe
lift/lowercircuit
Thecuttingdeckdoesnotliftorliftsslowly.
•Theenginespeedistoolow.
•Thecuttingdeckbeingraisedduringsteeringinput(steering
haspriority).
•Theliftcylinderlinkageisbindingorbroken.
•Theliftarmbushingsarebinding.
•Thehydraulic-uidlevelinthehydraulictankislow.
•Theimplement-reliefvalve(inthegearpump)isstuckor
damaged.
•Theliftcylinderisleakinginternally.
•Thedeckliftmanifoldvalvesarewornordamaged.
•Thegearpumpiswornordamaged.
Note:Awornordamagedgearpumpwillalsoaffectthe
steeringcircuit.
Thecuttingdeckraises,butdoesnotstayup.
Note:TheliftcylinderandsolenoidvalveS1inthedecklift
manifoldcannotprovideanabsolutelyperfectseal.The
cuttingdeckwilleventuallylowerifleftintheraisedposition.
•Theliftcylinderisleakinginternally.
•SolenoidvalveS1inthedeckliftmanifoldisleaking.
HydraulicSystem:Troubleshooting
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Groundsmaster360
16225SLRevC