Toro Greensmaster 3120 - Steering Circuit Problems

SteeringCircuitProblems
Problem
PossibleCauses
Oilsupplytothesteeringcontrolvalveis
insufcient(tractionchargeandliftcircuits
affectedaswell).
Steeringwheelishardtoturn.
Emergencysteeringballinsteeringcontrol
valveismissingordamaged.
Leafspringsinsteeringcontrolvalveareworn
orbroken.
Gearwheelsetinsteeringcontrolvalveis
worn.
Drivinginastraightlineisdifcult.
Steeringcylinderisseizedoritspistonseals
areworn.
Steeringwheelwillnotreturntotheneutral
position.
Spoolandsleevearestickingtosteering
controlhousingassembly.
Leafspringsinsteeringcontrolvalveare
brokenorstuck.
Steeringwheelcanturnonitsown.
Spoolandsleevearestickingtosteering
controlhousingassembly.
Cardanshaftforkiswornorbroken.
Backlashresultswhenturningsteeringwheel.
Leafspringsinsteeringcontrolvalveareworn
orbroken.
Airistrappedinthesteeringcylinder. Rearwheelshimmieswhenthesteeringwheel
isturned.
Mechanicalconnectionstothewheelorwheel
bearingareworn.
Thesteeringcylinderisworn. Thesteeringwheelcanbeturnedwithoutthe
rearwheelturning.
Thegearsetinthesteeringcontrolvalveis
worn.
Steeringresponseistooslowandheavywhen
tryingtoturnquickly.
Oilsupplytothesteeringcontrolvalveis
insufcient(tractionchargeandliftcircuits
affectedaswell).
Turningsteeringwheelturnsmachineinthe
oppositedirection.
Hosestothesteeringcylinderarereversed.
Hydraulicowtosteeringcontrolvalveislow
(tractionchargeandliftcircuitsaffectedas
well).
Steeringforce(possiblytoonesideonly)is
insufcient.
Reliefvalveinsteeringcontrolvalveisleaking
ordamaged.
HydraulicSystem:Troubleshooting
Page4–34
Greensmaster3120
17230SLRevC