Toro Groundsmaster 4500-D Series - Page 337

SolenoidCoilTesting(continued)
1
3
2
2
1
3
2
2
g276033
Figure217
1.Solenoidcoil3.Coilnut
2.O−ring
3.Usingamultimeter(ohmssetting),measureresistancebetweenthetwo(2)
connectorterminalsonthesolenoidcoil.Solenoidcoilresistanceshouldbe
3.66ohms.
Note:Solenoidcoilresistanceshouldbemeasuredwithsolenoidat
approximately20ºC(68ºF).Resistancemaybeslightlydifferentthanlisted
atdifferenttemperatures.Typically,afailedsolenoidcoilwilleitherbeshorted
(verylowornoresistance)oropen(inniteresistance).
4.Ifsolenoidcoilresistanceisincorrect,replacecoil:
A.Usea12point,26mmsockettoloosenandremovethecoilnutthat
securessolenoidcoil.
B.SlidesolenoidcoilandO−ringsfromvalvestem.Cleanallcorrosionor
dirtfromthevalve.
C.SlidenewcoilwithO−ringsontothesolenoidstem.
D.Usea12point,26mmsockettoinstallandtorquecoilnutto5N·m(44
in−lb)(donotovertighten).
5.Aftertestingiscompleted,connectwireharnessconnectortothesolenoid
coil.
Groundsmaster
®
4500-D/4700-D
Page6–55
ElectricalSystem:ComponentTesting
19245SLRevA