Service Manual

DiodeAssemblies(DieselEngine)
g223019
Figure283
1.Endofthediodebody
3.Maleterminal
2.Diodeassembly4.Femaleterminal
g213675
Figure284
1.Diesel-particulatelter
(DPF)
2.Diode(2each)3.EngineECU
TheenginewireharnessonmachineswitheitheraKubotaorYanmardiesel
engineincludes2identicaldiodes.Themaximumcurrentallowedthroughany
ofthediodesis6A.Thediodeassembliescanbeidentiedbyablackcolor,
diodesymbol,andT oroPartNumberontheendofthediodeassemblybody
(Figure283).The2diodesplugintotheenginewireharnessneartheYanmar
engineECU(Figure284);refertotheEngineWireHarnessDrawing/Diagramin
AppendixA(pageA–1).
Adiodeassembly(D1)isusedforcircuitprotectionfromthevoltagespikesthat
occurwhentheenginestartersolenoidisde-energized.
Adiodeassembly(D2)isusedtoprotecttheengineECUfromreversepolarityin
theEGRrelaycircuit.
TestingtheDiodeAssembly
1.Parkthemachineonalevelsurface,lowerthecuttingunits,shutoffthe
engine,settheparkingbrake,andremovethekeyfromthekeyswitch.
ElectricalSystem:TestingtheElectricalComponents
Page7–118
Reelmaster
®
5410/5510/5610Series
15216SLRevD