Toro Groundsmaster 4500-D Series - Page 328

Testing
86
85
87A 87
30
2
1
3
4
1
g276024
Figure207
1.Coilterminal
3.Normallyclosedterminal
2.Commonterminal
4.Normallyopenterminal
1.Parkmachineonalevelsurface,lowercuttingdecks,stopengine,engage
parkingbrakeandremovekeyfromtheignitionswitch.
2.Tomakesurethatmachineoperationdoesnotoccurunexpectedly,
disconnectnegative(−)cablefrombatteryandthendisconnectpositive(+)
cablefrombattery(seeBatteryService(page6–71)).
3.Locaterelaythatistobetested.
4.Disconnectwireharnessconnectorfromrelay.Removerelayfrommounting
bracketfortesting.
5.Usingamultimeter,verifythatcoilresistancebetweenterminals85and86is
from71to88ohms.
6.Connectmultimeter(ohmssetting)leadstorelayterminals30and87.
Groundterminal86andapply+12VDCtoterminal85.Therelayshould
makeandbreakcontinuitybetweenterminals30and87as+12VDCis
appliedandremovedfromterminal85.
7.Disconnectvoltagefromterminal85andmultimeterleadfromterminal87.
8.Connectmultimeter(ohmssetting)leadstorelayterminals30and87A.Apply
+12VDCtoterminal85.Therelayshouldmakeandbreakcontinuitybetween
terminals30and87Aas+12VDCisappliedandremovedfromterminal85.
9.Aftertesting,disconnectvoltageandmultimetertestleadsfromtherelay
terminals.Securerelaytomountingbracketandconnectwireharness
connectortorelay.
10.Secureallremovedcomponentstomachine.
11.Connectpositive(+)cablersttobatteryandthenconnectnegative(−)cable
tobattery(seeBatteryService(page6–71)).
ElectricalSystem:ComponentTesting
Page6–46
Groundsmaster
®
4500-D/4700-D
19245SLRevA