ProcedureforTractionCircuitReliefPressureTest(continued)
9.Iftractionreliefpressureislow,makesurethatbypass(tow)valvesintraction
pumparefullyseated.Then,inspecttractionpumpreliefvalves(Figure
52).Cleanorreplacevalvesasnecessary.Thesecartridgetypevalvesare
factorysetandarenotadjustable.Ifreliefvalvesareingoodcondition,piston
(traction)pumporwheelmotorsshouldbesuspectedofwearandinefciency.
Note:Forwardandreversereliefvalvesareidentical.Reliefvalvescanbe
switchedinpiston(traction)pumptohelpinidentifyingafaultyreliefvalve.
10.Whenreliefpressuretestingiscomplete,disconnectpressuregaugefrom
testport.
HydraulicSystem:Testing
Page5–44
Groundsmaster
®
5900&5910
16227SLRevB
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