Toro CT2120 30655 - Troubleshooting Hydraulic and Cylinder Issues; Hydraulic System Noise and Power Loss; Cylinder Rotation and Lifting Problems

Problem
PossibleCauseCorrectiveAction
1.Faultypump
1.Identifynoisypumpandserviceor
replace
2.Faultymotor
2.Identifynoisymotorandserviceor
replace
3.Airleakingintosystem
3.Tightenorreplacehydraulicttings
particularlyinsuctionlines
4.Suctionstrainerblockedordamaged4.Cleanandreplacesuctionstraineror
renewasnecessary
5.Excessiveoilviscosityduetocold
conditions
5.Allowsystemtowarmup
6.Lowreliefvalvesetting6.Havereliefvalvecleanedandpressure
checked.Consultyourauthorised
dealer
Excessivenoiseinhydraulicsystem
7.Lowhydraulicoillevel7.Fillhydraulicoilreservoirtocorrect
level
1.Wornpumpormotor1.Replaceasnecessary
2.Lowhydraulicoillevel2.Fillhydraulicoiltanktocorrectlevel
3.Incorrectoilviscosity3.Renewoilinhydraulictankwith
correctviscositygradeoil,referto
SPECIFICATIONS
4.Oillterelementblocked4.Changelterelement
5.Faultypressurereliefvalve5.Havereliefvalvecleanedandpressure
checked.Consultyourauthorised
dealer
6.Overheating6.Checkcylindertobottomblade
adjustment.Reduceworkratei.e.
increaseheightofcutorreduceforward
speed
Afterinitialsatisfactoryoperationmachine
losespower
7.Leaksonsuctionhose
7.Checkandtightenttings.Replace
hoseifnecessary.
1.Highspotoncylinderorbottomblade
duetocontactwithforeignobject
1.Removehighspotwithastoneand
backlaptorestorecuttingedges.
Seriousdamagewillrequireregrinding
Cylinder‘knocks’whilerotating
2.Worncylinderbearings2.Replaceasnecessary
1.Cuttingcylinderbearingseized
1.Replaceasnecessary
2.Incorrectrotationmotortted2.Checkmotorandreplaceifnecessary
3.Motorintegralcheckvalvejammed
open
3.Havecheckvalvecleanedandchecked
4.Cuttingcylindertightonthebottom
blade
4.Readjustsetting
Onecylinderrotatesslowly
5.Motorworn5.Replacemotor
1.Liftcylindersealfailure
1.Replaceseals
2.Pressurereliefvalvejammedopenor
wronglyset
2.Havereliefvalvecleanedandpressure
checked.Consultyourauthorised
dealer
3.Defectivecontrolvalve3.Overhaulcontrolvalve
Cutterheadfailstoliftoutofwork
4.Mechanicalblockage4.Removeblockage
1.Incorrecthoseroutingorincorrect
orientationofhydraulicttings
1.Movecutterheadsthroughoutextremes
ofmovementandobserveany
tightnessinthehoses.Correctly
routehosesandorientatettingsas
necessary
2.Tightnessinpivots2.Releaseandgreaseasnecessary
3.Moweroperatedin‘hold’position3.Movepositioncontrolswitchto‘down/
oat’positio
Cutterheadsdonotfollowgroundcontours
4.Weighttransfersettoohigh4.Reduceweighttransfer
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