Service Manual

Table Of Contents
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
15216SLRevE