E-4TROUBLESHOOTINGE-4

ELECTRONIC IDLER CONTROL TROUBLESHOOTING GUIDE

With Idler Control Switch in the AUTO Position, Engine Will Not Pick Up Speed When:

The Arc is Struck

Both

Auxiliary Load

Check for loose or disconnected

wire running between weld

selector switch and output stud.

1.Check Idler circuit wiring. Possible Problems are wires from Current Sensing Board reversed at idler switch or wires connected incorrectly at Current Sensor Molex plug.

2.Check voltage across idler control switch.

1.Load too small. Try load above 100 Watts.

2.Check for loose or discon- nected wire running from black lead out of exciter to CB2 circuit breaker.

12V

0V

Replace

 

Current

Contact

 

Kubota

 

 

Sensing PCB

Engine Repair

 

 

 

Facility.

CAUTION

If for any reason you do not understand the test procedures or are unable to perform the tests/repairs safely, contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed.

CLASSIC 300D KUBOTA

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Lincoln Electric IM843-C manual Sensing PCB Engine Repair Facility