Toro Groundsmaster 5910 Series - Diode Assemblies

DiodeAssemblies
1 24
3
g288606
Figure260
1.Diode
3.T erminalB(male)
2.Endofdiodebody4.TerminalA(female)
1 234
5
g288607
Figure261
1.Minidiode4.TerminalA
2.Endofdiodebody
5.T erminalB
3.Key
Ten(10)differentdiodesareusedonallGroundsmaster5900/5910machines.
Themaximumcurrentallowedthroughanyofthediodesis6amps.
•Adiodeassembly(D1)isusedforcircuitprotectionfromvoltagespikesthat
occurwhenthestartersolenoidisde−energized.Thediodeplugsintothe
enginewireharnessnearthefuelwaterseparator(seeAppendixA(page
A–1)).Thediodecanbeidentiedbyitsblackcolor,diodesymbolandT oro
partnumberontheendofthediodebody(Figure260).
•Adiodeassembly(D2)isusedtoprotecttheengineECUfromreverse
polarityintheEGRrelaycircuit.Thediodeplugsintotheenginewireharness
neartheYanmarECU(seeAppendixA(pageA–1)).Thediodecanbe
identiedbyitsblackcolor,diodesymbolandT oropartnumberontheendof
thediodebody(Figure260).
•Aminidiodeisusedtoprotectthe24Voltsystemfromvoltagespikesthat
occurwhenthe24voltcontactorisde−energized.Thediodeplugsintoa
fuseanddiodeholderintherearpowercenterintherightrearcornerofthe
enginecompartment(Figure262).TheDiodecanbeidentiedbyitssilver
coloranddiodesymbolontheendofthediodebody(Figure261).
•Seven(7)minidiodesarelocatedintwo(2)diodeblockinthefrontpower
centerbehindtheoperatorseat(Figure263).Thepurposeofeachdiodeis
listedinthefollowingtable.Thediodescanbeidentiedbytheirsilvercolor
anddiodesymbolontheendofthediodebody(Figure261).
ElectricalSystem:ComponentTesting
Page6–118
Groundsmaster
®
5900&5910
16227SLRevB