Toro Groundsmaster 5900 Series - Page 368

Testing(continued)
1
2
g288590
Figure249
1.CuttingDeckmanifoldfrontshown)2.SolenoidvalvePRV
2.Usingamultimeter(ohmssetting),measureresistancebetweenthetwo(2)
connectorterminalsonthesolenoidcoil.Theresistanceforthesolenoid
coilsisidentiedbelow:
A.Thecoilsofthesolenoidvalvesatthefollowinglocationsarethesame.
Resistanceofthesecoilsshouldbeapproximately8.8ohmswhentested
at20ºC(68ºF):
Steering/LiftmanifoldS4,S5,S6andS9(Figure248)
B.Thecoilsofthesolenoidvalvesatthefollowinglocationsarethesame.
Resistanceofthesecoilsshouldbeapproximately7.1ohmswhentested
at20ºC(68ºF):
Steering/LiftmanifoldS1,S2,S3,S7andS8(Figure248).
CuttingDeckmanifolds(front,leftandright)PRV(Figure249).
Note:T oassistintroubleshooting,identicalreplaceablesolenoidcoils
canbeexchanged.Iftheproblemfollowsthecoil,thecoilislikelyatfault.
Iftheproblemremainsunchanged,somethingotherthanthecoilisthe
likelyproblemsource(e.g.switch,circuitwiring,hydraulicproblem).
Note:HydraulicsolenoidvalvesS1throughS9(steering/liftmanifold)
andPRV(cuttingdeckmanifolds)havereplaceablecoils.Ifthese
solenoidcoilsfailaresistancetest,replacetheentirevalveassembly
(seeHydraulicSolenoidValveCoils(page6–146)).
ElectricalSystem:ComponentTesting
Page6–106
Groundsmaster
®
5900&5910
16227SLRevB