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Section F-1 Section F-1
Classic III and IIID
Troubleshooting & Repair Section.................................................................................Section F
How to Use Troubleshooting Guide .......................................................................................F-2
PC Board Troubleshooting Procedures..................................................................................F-3
Troubleshooting Guide ................................................................................................F-4 - F-13
Test Procedures ...................................................................................................................F-14
Alternator Rotor Test......................................................................................................F-14
Field Shunt Winding Test...............................................................................................F-18
Flashing the Fields ........................................................................................................F-21
Idler Solenoid Test .........................................................................................................F-23
Engine Throttle Adjustment Test - Classic IIID (Diesel).................................................F-25
Engine Throttle Adjustment Test - Classic III (Gasoline) ...............................................F-29
Oscilloscope Waveforms......................................................................................................F-34
Normal Open Circuit Voltage Waveform (115VAC Supply) ...........................................F-34
Normal Open Circuit DC Weld Voltage Waveform.........................................................F-35
Typical DC Weld Output Voltage Waveform...................................................................F-36
Replacement Procedures ....................................................................................................F-37
Alternator Rotor Removal and Replacement ................................................................F-37
Alternator Stator Removal and Replacement................................................................F-42
Generator Frame Removal and Replacement...............................................................F-47
Generator Armature Removal and Replacement ..........................................................F-53
Retest After Repair ..............................................................................................................F-55
TABLE OF CONTENTS
TROUBLESHOOTING & REPAIR SECTION