Toro Reelmaster 5010- H - Page 55

Step3:Testthealternator.
Useamultimetertoperformthefollowingstepstotestthealternator:
1.GotoPreparingforTroubleshootingand/orT esting(page22)andfollowthestepslisted.
2.Removethebatterycovertoaccessthebatteryattherearofthemachine.Withtheengineoff,measure
the12Vdcbatteryvoltage.Itshouldbe12.5to12.8volts.
Note:Aspartofthisstep,verifythatthebatteryterminalsandcableclampsarecleanandnotcorroded.
Note:Ifthisreadingis12.4Vdcorless,thealternatormaynotbeproperlychargingthebattery.Itisalso
possiblethatthe12Vdcbatterycouldbebeginningtofail.
3.Starttheengine.
4.Measurethebatteryvoltagewhiletheengineisrunning.Itshouldbehigherthan12.8volts.Readingsof
13.8to14.5voltsaretypical.
5.Shutofftheengine.
Pass
Thevoltagereadingsweregood.GotoStep4.
Fail
Thevoltagereadingswerenotgood.GotoStep5.
Step4:Testthewiringharness.
Note:Makesurethattheengineisshutoffbeforedoingthisstep.
Useamultimetertotesttheresistancebetweenthefollowingpairsoflocations:
LocationHarness
Connector
Pin
Wire
Color
Expected
Reading
ConnectorGraphic
1Alternatorhousing
2
Chassisground
Lessthan
2ohms
1Main
N/A
J04Red
2MainP12ARed
Lessthan
2ohms
1MainP171Pink
2MainP042Pink
Lessthan
2ohms
1MainP172White
2MainP5116White
Lessthan
2ohms
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