Toro Greensmaster 3120 - Testing the Charging System

TestingtheChargingSystem
BatteryVoltageTable
Atleast0.50Vovertheinitialbatteryvoltage.
Initialbatteryvoltage=12.30V
Batteryvoltageafter3minutescharge
=12.85V
Difference
=+0.55V
Thisisasimpletestthatdeterminesifachargingsystemisfunctioning.Ittells
youifthechargingsystemhasanoutput,butnotitscapacity.
Toolrequired:DigitalmultimetertosettheDCvolts.
1.Connectthepositive(+)multimeterleadtothepositivebatterypostand
negative(-)multimeterleadtothenegativebatterypostandrecordthe
batteryvoltage.
2.Starttheengineandrunitathigh-idlespeed(2,850rpm).Allowthebattery
tochargeforaminimumtimeof3minutes.
3.Connectthepositive(+)multimeterleadtothepositivebatterypostand
negative(-)multimeterleadtothenegativebatterypostandrecordthe
batteryvoltage.
4.Afterrunningtheengineforaminimumtimeof3minutes,thebatteryvoltage
mustbeateast0.50Vhigherthanthatoftheinitialbatteryvoltage.
Note:Dependingupontheconditionofthebattery,itscurrentchargeand
thebatterytemperature,thebatteryvoltageincreasesatdifferentratesas
thebatterycharges.
RefertotheBatteryVoltageT able(page5–9)foranexampleofacharging
systemthatisfunctioning.
Greensmaster3120
Page5–9
ElectricalSystem:ElectricalSystemQuickChecks
17230SLRevC