Step4:Testthepowerandgroundwiringinmainharnessconnectors
P48andP49.
ThesearediagnosticstepstohelpisolateproblemsidentiedinStep3.Useamultimetertotesttheresistance
betweenthefollowingpairsoflocations:
LocationHarness
Connector
Pin
Wire
Color
Expected
Reading
ConnectorGraphic
1MainP491Red
2MainP373Red
Lessthan
2ohms
1MainP492
Black
(48V
Ground)
2MainP374
Black
(48V
Ground)
Lessthan
2ohms
1MainP481White
2MainP492
Black
(48V
Ground)
24kto26k
ohms
Pass
Theresistancetestspassed,butthevoltagereadingsinStep3arestillbad.
Note:DonotgotoStep5untilafterthevoltagereadingsinStep3aregood.
Fail
Oneormoreofthepowerandgroundwiringtestsfailed.Repairorreplacethewornordamaged
parts.GotoReturningtheMachinetoService(page22)andfollowthestepslisted.
Step5:Swapcuttingreelmotorsbetweencuttingunits.
Allofthecuttingreelmotorsareidentical.
1.GotoPreparingforTroubleshootingand/orT esting(page22)andfollowthestepslisted.
2.Unplugthe48Vdcbatterydisconnecttopreventunexpectedcuttingunitoperation.RefertoConnecting
andDisconnectingthe48VdcBatterySystem(page19).
3.Swapcuttingreelmotor4withacuttingreelmotorfromadifferentcuttingunit.Youcanobtainmore
informationonreplacingthecuttingreelmotorinChapter5ofthe5010-HServiceManual.
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