Toro Greensmaster 3120 - Controls System Maintenance; Adjusting the Cutting Unit Lift;Drop; Adjusting the Lift Cylinders

ControlsSystem
Maintenance
AdjustingtheCuttingUnit
Lift/Drop
Thecuttingunitlift/dropcircuitcomeswitha
ow-controlvalve(Figure47).Thisvalveispreset
atthefactoryatapproximately3turnsopen,butyou
mayneedtoadjustittocompensatefordifferencesin
hydraulicuidtemperatures,mowingspeeds,etc.
Note:Allowthehydraulicuidtoreachfulloperating
temperaturebeforeadjustingtheow-controlvalve.
1.Locatetheow-controlvalvebelowtheseat
(Figure47).
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g033382
Figure47
1.Flow-controlvalve
2.Loosenthejamnutattheadjustingknobonthe
owcontrolvalve.
3.Adjusttheowcontrolvalveasfollows:
•Rotatetheknobcounterclockwiseifthe
centercuttingunitisdroppingtoolateor
•Rotatetheknobclockwiseifthecenter
cuttingunitisdroppingtooearly.
Note:Youshouldnotneedtorotateitmore
than1/32to1/16ofaturn.
4.Testtheadjustmentandrepeatstep3as
needed;whennished,tightenthejamnut.
AdjustingtheLiftCylinders
Toregulatetheheightofthefrontcuttingunitswhen
intheraised(transport)position,youcanadjustthe
front-liftcylinders.
1.Lowerthecuttingunitstotheground.
2.Removetheboltsthatsecurethecoverplateof
theliftcylinderthatyouareadjustingfromthe
supportbracketsofthechassis(Figure48).
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Figure48
1.Bolt
3.Leftcoverplate
2.Rightcoverplate
3.Loosenthejamnutsecuringtheclevisttingto
thecylinderofthecutting-unitthatneedstobe
adjusted(Figure49).
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Figure49
1.Cuttingunit-liftarm3.Clevistting
2.Retainingpin
4.Clevispin
4.Removetheretainingpinandclevispin(Figure
49)
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