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Section F-1 Section F-1
CLASSIC II
Troubleshooting & Repair Section ................................................................................Section F
How to Use Troubleshooting Guide.......................................................................................F-2
PC Board Troubleshooting Procedures .................................................................................F-3
Troubleshooting Guide .................................................................................................F4 - F-12
Test Procedures...................................................................................................................F-13
Alternator Rotor Test......................................................................................................F-13
Shunt Field Winding Test...............................................................................................F-17
Idler Solenoid Test.........................................................................................................F-20
Engine Throttle Adjustment Test....................................................................................F-22
Flashing the Fields ........................................................................................................F-26
Oscilloscope Waveforms......................................................................................................F-28
Normal Open Circuit Voltage Waveform (115VAC Supply)...........................................F-28
Normal Open Circuit DC Weld Voltage Waveform........................................................F-29
Typical DC Weld Output Voltage Waveform..................................................................F-30
Replacement Procedures ....................................................................................................F-31
Alternator Rotor Removal and Replacement ................................................................F-31
Alternator Stator Removal and Replacement................................................................F-38
Generator Frame Removal and Replacement ..............................................................F-43
Generator Armature Removal and Replacement..........................................................F-46
Retest After Repair...............................................................................................................F-48
TABLE OF CONTENTS
TROUBLESHOOTING & REPAIR SECTION