Toro Reelmaster 3100-D - Steering;Lift;Sidewinder Circuit Testing − Gear Pump (P2) Flow Test

Steering/Lift/SidewinderCircuitTesting−GearPump(P2)Flow
Test
g345084
Figure56
Gearpump(P2)isdesignedtosatisfybothsteeringcylinderandliftcylinder
needssimultaneously(atfullspeedthrottle).TheGearPump(P2)FlowT est
comparesuidowatNoLoadwithuidowUnderLoad.Adropinowunder
loadofmorethan15%indicatesthegearsandwearplatesinthepumphave
worn.Continuedoperationwithawornpumpcangenerateexcessiveheatand
causedamagetothesealsandothercomponentsinthehydraulicsystem.
Ifunitsteeringissluggishorotherwiseperformspoorly,see
Steering/Lift/SidewinderCircuitT esting−SteeringControlValveandSteering
CylinderT est(page5–60).
Ifcuttingunitliftoperationisunsatisfactory,checkliftcontrolmanifoldsolenoid
valvesand/orliftcylinders.Additionalinformationonthesecomponentsis
availableinthischapter.
Ifbothsteeringandliftoperationsperformpoorly,performthegearpump(P2)
owtestandcircuitreliefvalvepressuretest(seeSteering/Lift/SidewinderCircuit
Testing−ReliefValvePressureT est(page5–58)).
SpecialEquipmentRequired:
•FlowMeterwithPressureGaugethathasatleasta16LPM(5GPM)capacity
•Phototach(non−contacttachometer)
1.ParkthemachineonalevelsurfacewiththecuttingunitsloweredandPTO
switchinthedisableposition.Theengineshouldbeoffandtheparking
brakeengaged.
2.ReadPrecautionsforHydraulicT esting(page5–27).
Reelmaster
®
3100-D/3105-D
Page5–55
HydraulicSystem:Testing
20252SLRevA