Relays
g294973
Figure134
1.Startrelay(5terminals)3.Forwardfanrelay(4terminals)5.Keyrelay(4terminals)
2.Glowrelay(4terminals)4.Reversefanrelay(4terminals)
Themachinesuseanumberofelectricalrelays.Someoftherelayshavefour(4)
terminalsandsomehaveve(5)terminals.Thenumberofterminalstherelay
hasdetermineshowtherelayshouldbetested.Atagnearthewireharness
relayconnectorcanbeusedtoidentifyeachrelay;refertoFigure134.
•Thestartrelayisattachedtothebatterysupportplateundertheoperator
seat.Whenenergized,thestartrelayallowtheelectricalcurrenttothe
enginestarter.
•Theglowrelayisattachedtothebatterysupportplateundertheoperator
seat.Whenenergized,theglowrelayallowtheelectricalcurrenttothe
engineglowplugs.
•Thetwo(2)forwardfanrelaysareattachedtothebatterysupportplateunder
theoperatorseat.Whenenergized,theforwardfanrelaysallowtheelectrical
currenttotheradiatorfan.
ProLineH800
Page6–39
ElectricalSystem:TestingtheElectricalComponents
19241SLRevB
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