Toro Groundsmaster 3280-D - Page 157

TestProcedure
Note:Whenperformingtheliftcylinderinternalleakagetest,thecuttingdeck
shouldbeattachedtotheliftarms.
g225791
Figure74
1.Cylinderbarrelendtting
3.Hydraulichose
2.Hydraulichose
4.Liftcylinder
1.ParkthemachineonalevelsurfacewiththePTOswitchoff,shutoffthe
engine,andsettheparkingbrake.
2.Fortheliftcylinderthatistobetested,useajacktoraisetheliftarmslightly.
Thisremovestheloadfromtheliftcylinderandreleasestheliftcylinder
hydraulicpressure.
3.Supporttheliftarmwithjackstandstopreventitfromlowering.
4.Cleantheareaaroundthehydraulichosesendatthebarrelendofthelift
cylinder.Disconnectthehydraulichosesfromtheliftcylinderbarrelend
tting(Figure74).
IMPORTANT
Whencappingtheliftcylinderttingandhydraulichoseend,use
asteelcapandplugtoensurethatthereisnouidleakage.The
plasticplugscannotholdthehydraulicpressurethatisdeveloped
duringthistestprocedure.
5.Installasteelcapontheopenliftcylinderttingtosealtheliftcylinder.Also,
installasteelplugintheopenendofthedisconnectedhosetoprevent
leakageorcontamination.
6.Raisetheliftarmslightlywithajackandremovethejackstand,thenlower
andremovethejack.
7.Thecappedliftcylindershouldbeabletosupportthecuttingdecklong
enoughforthemachinetomovefromonecuttingareatoanotherduring
operation.
8.Iftheliftcylinderallowsthecuttingdecktolowertooquickly,replaceorrepair
theliftcylinder;refertotheLiftCylinder(page5–110).
9.Oncetheliftcylinderconditionisdetermined,useajacktoraisetheliftarm
slightlywhichremovestheloadfromtheliftcylinder.
10.Supporttheliftarmwithjackstandstopreventitfromlowering.
Groundsmaster
®
3280-D/3320
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HydraulicSystem:TestingtheHydraulicSystem
05138SLRevB