Toro Field Pro 6040 - Hydraulic Solenoid Valve Coils

HydraulicSolenoidValveCoils
g416410
Figure76
1.Coilnut(2each)4.Solenoidcoil(2each)
2.Solenoidcoilw/diode5.Coilspacer
3.Manifoldblock
Electriccoilactuatedhydraulicvalvesareusedonthelasercontrolmanifold.
Whenthecoilisenergizedthehydraulicvalveshiftstocontrolhydraulicow.
TestingtheHydraulicSolenoidValveCoils
Typically,afailedsolenoidcoilwilleitherbeshorted(verylowornoresistance)
oropen(inniteresistance).
1.Locatethehydraulicsolenoidvalvecoiltobetestedanddisconnectthewire
harnessconnectorfromthecoil.Checktheharnessconnectorsandsolenoid
coilsfordamageorcorrosionandcleanorrepairifnecessary.
Note:Priortotakingsmallresistancereadingswithadigitalmultimeter,short
themetertestleadstogether.Themeterwilldisplayasmallresistancevalue
(usually0.5ohmsorless).Thisresistanceisduetotheinternalresistanceof
themeterandtestleads.Subtractthisvaluefromthemeasuredvalueofthe
componentyouaretestingtoobtainanaccuratereading.
2.Usingamultimeter(ohmssetting),measuretheresistancebetweenthetwo
(2)connectorterminalsonthesolenoidcoil.Theresistanceforthesolenoid
coilsisidentiedbelow:
A.ThecoilofsolenoidvalveSVonthelasercontrolmanifoldisuniqueasit
includesaninternalnon-replaceablediode.Resistanceofthiscoilshould
ElectricalSystem:TestingtheElectricalComponents
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FieldPro®6040
22267SLRevA