Adjustments
AdjustManifoldReliefValves
g287873
Figure76
1.Reliefvalve
3.Adjustmentsocket
2.Valvecap
Thesteering/deckliftmanifoldincludesadjustablepressurereliefvalves.An
adjustmentmayberequiredtothesevalvesiftestingdeterminesthatthecircuit
pressuresettingisincorrect(seeT esting(page5–36)).Usethefollowing
processifavalveadjustmentisrequired.
Note:Donotremovethevalvefromthehydraulicmanifoldforadjustment.
1.Parkmachineonalevelsurface,lowercuttingdecksfully,disengagePTO
andstopengine.Removekeyfromkeyswitch.
2.Locatereliefvalveonsteering/deckliftmanifold.
3.Removecaponreliefvalvewithanallenwrench.
4.Toincreasepressuresetting,turntheadjustmentsocketonthevalveina
clockwisedirection.A1/8turnonthesocketwillmakeameasurablechange
inpressure.
5.Todecreasepressuresetting,turntheadjustmentsocketonthevalveina
counterclockwisedirection.A1/8turnonthesocketwillmakeameasurable
changeinpressure.
6.Installcaponvalve.
7.Recheckreliefvalvepressureusingcorrecttestprocedureandreadjustif
needed.
HydraulicSystem:Adjustments
Page5–72
Groundsmaster
®
5900&5910
16227SLRevB
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