Service Manual

MowCircuitProblems
Problem
PossibleCauses
Allthe3frontcuttingreelmotorsdonotoperatebutrear
cuttingreelmotorsoperate.
•ThesolenoidvalveMSV2/SP2onthemowcontrolmanifold
isdamaged.
Note:ThesolenoidvalvesMSV1/SP1andMSV2/SP2are
identicalandcanbereversedfortestingpurposes.
•Themow/backlapleverforthefrontcuttingunits(MR2/MV2)
isnotrotatedfully.
•AnelectricalproblemexiststhatpreventsMSV2/SP2
solenoidcoilonthemowcontrolmanifoldfrombeing
energized(refertoTroubleshooting(page7–26)orthe
ElectricalSchematicandWireHarnessDrawings/Diagrams
inAppendixA(pageA–1)).
•Thefrontcuttingreel(s)is(are)binding.
•Thegearpumpsection(P2)iswornordamaged.
Bothrearcuttingreelmotorsdonotoperatebutfrontcutting
reelmotorsoperate.
•ThesolenoidvalveMSV1/SP1onthemowcontrolmanifold
isdamaged.
Note:ThesolenoidvalvesMSV1/SP1andMSV2/SP2are
identicalandcanbereversedfortestingpurposes.
•Themow/backlapleverfortherearcuttingunits(MR1/MV1)
isnotrotatedfully.
•AnelectricalproblemexiststhatpreventsMSV1/SP1
solenoidcoilonthemowcontrolmanifoldfrombeing
energized(refertoTroubleshooting(page7–26)orthe
ElectricalSchematicandWireHarnessDrawings/Diagrams
inAppendixA(pageA–1)).
•Therearcuttingreel(s)is(are)binding.
•Thegearpumpsection(P1)iswornordamaged.
Asinglecuttingreelmotordoesnotoperate,rotatesslowly,
orstopsunderload.
•Thereliefvalveinthemowcontrolmanifoldisbypassing.
•Tractionspeedandcuttingconditions(e.g.,verytallorwet
grass)exceedcuttingunitcapacity.
•Thecross-overreliefvalveinthecuttingreelmotoris
stuckordamaged.(Reelmaster5510/5510-D/5610/5610-D
machines)
•Thecuttingreelmotoriswornordamaged.
•Thecuttingreelmotorhasinternalleakage(bypassinguid).
•Thegearpumpsection(P2orP3)iswornordamaged.
Note:Ifappropriate,transferasuspecteddamagedmotor
toanothercuttingreel.Ifproblemfollowsthemotor,motor
needstoberepairorreplacement.
Reelmaster
®
5410/5510/5610Series
Page6–53
HydraulicSystem:Troubleshooting
15216SLRevD