Toro Reelmaster 5510-D - Page 255

TestProcedure(continued)
g217946
Figure137
1.Liftcontrolmanifold2.SVRVsolenoid3.T estport(G4)
4.Cleanthetestport(G4)onthebottomofliftcontrolmanifold,andthen
connecta35,000kPa(5,000psi)pressuregaugetothetestport(Figure
137).
5.Afterinstallingthepressuregaugetothemanifoldtestport,starttheengine
andrunitatlow-idlespeed.Checkforhydraulic-uidleaksfromthetest
connectionsandcorrectbeforecontinuingthetest.
6.Presstheenginespeedswitchtofullspeed(3,005to3,055rpm)position.
UsetheInfoCentertocheckthattheenginespeediscorrect.
IMPORTANT
Donotallowthepressuretoexceed17,500kPa(2,500psi).
IMPORTANT
Whenperformingthistest,holdthejoystickleverintheRAISE
position,onlylongenoughtogetasystempressurereading.
HoldingtheleverinRAISEforanextendedperiodmaydamage
systemcomponents.
7.EnsurethatthereelengageswitchisOFF,andthenpullthejoysticklever
rearwardtopressurizetheliftcircuit.WhileholdingleverintheRAISE
(rearward)position,monitorthepressuregaugecarefully.
8.Whenthecuttingunitsreachthefullyraisedpositionandtheliftreliefvalve
lifts,thesystempressureshouldbeapproximately13,800kPa(2,000psi).
9.ReturnthejoysticklevertotheNEUTRALposition,andshutofftheengine.
10.Ifthemeasuredpressureisincorrect,removethesolenoidreliefvalve
(SVRV)fromtheliftcontrolmanifoldandcleanorreplacethevalve;referto
ServicingtheLiftControlManifold(page6–198).
11.Also,iftheliftcircuitpressureislow,checkfortherestrictioningearpump
inletline.TheInternalliftcylinderleakagewouldalsocauselowliftcircuit
pressure;refertoTestingtheLiftCircuit–LiftCylinderInternalLeakage
Reelmaster
®
5410/5510/5610Series
Page6–137
HydraulicSystem:TestingtheHydraulicSystem
15216SLRevC