Toro Reelmaster 5510-D - Page 169

TractionCircuitProblems
Problem
PossibleCauses
Thetractionresponseissluggish.
•Thepiston(traction)pumpbypassvalveisopenor
damaged.
•Thebrakeisdraggingorbinding.
•Thechargepressureislow.
•Thehydraulicuidisverycold.
•Thepiston(traction)pumpcheckvalve,reliefvalve,and/or
ushingvalveisleaking.
•Thepiston(traction)pumporwheelmotor(s)iswornor
damaged.
•Thechargereliefvalveinthepiston(traction)pumpisnot
seatingorisdamaged.
•Thecheckreliefvalveinthepiston(traction)pumpisnot
seatingorisdamaged.
Note:Thecheckreliefvalvesforforwardandreverseare
identicalandcanbereversedfortestingpurposes.
•Theushingvalveinthepiston(traction)pumpisnot
seatingorisdamaged.
Note:If1tractioncircuitcomponenthasinternalwearor
damage,itispossiblethattheothertractioncomponents
arealsodamaged.
Neutralisdifculttondorunitoperatesinonedirectiononly.
•Thetractioncontrollinkageisincorrectlyadjusted,
disconnected,binding,ordamaged.
•Thecheckreliefvalveinthepiston(traction)pumpisnot
seatingorisdamaged.
Note:Thecheckreliefvalvesforforwardandreverseare
identicalandcanbereversedfortestingpurposes.
•Thepiston(traction)pumpiswornordamaged.
Notractionexistsineitherdirectionandtheenginespeed
remainsconstant.
•Thehydraulic-uidlevelinthehydraulictankislow.
•Thepiston(traction)pumpbypassvalveisopen.
•Thechargepressureislow.
•Theparkingbrakeisapplied,draggingorbinding.
•Thetractioncontrollinkageisincorrectlyadjusted,
disconnected,binding,ordamaged.
•Theushingvalveinthepiston(traction)pumpisnot
seatingorisdamaged.
•Thecheckreliefvalveinthepiston(traction)pumpisnot
seatingorisdamaged.
•Thepiston(traction)pumporwheelmotor(s)iswornor
damaged.
Note:If1tractioncircuitcomponenthasinternalwearor
damage,itispossiblethattheothertractioncomponents
arealsodamaged.
Reelmaster
®
5410/5510/5610Series
Page6–51
HydraulicSystem:Troubleshooting
15216SLRevC