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Section f troubleshooting and repair, If the engine will not start, see the trou, Bleshooting section of this manual – Lincoln Electric POWER-ARC 4000 SVM103-A User Manual

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Troubleshooting & Repair Section.................................................................................Section F

Safety Precautions.................................................................................................................F-1

How to Use Troubleshooting Guide ......................................................................................F-1

Troubleshooting Guide...................................................................................................F1 - F-9

Test Procedures

Rotor Voltage Test ........................................................................................................F-10
Rotor Resistance Test...................................................................................................F-12
Engine Throttle Adjustment Test...................................................................................F-15

Oscilloscope Waveforms

Normal Open Circuit Weld Voltage Waveform .............................................................F-18
Normal Open Circuit Weld Voltage Waveform (115 VAC Supply) ................................F-19
Typical Weld Output Waveform - Machine Loaded .....................................................F-20

Replacement Procedures

Brush Removal and Replacement ................................................................................F-21
Rheostat Removal and Replacement ..........................................................................F-23
Capacitor and Diode Bridge Removal and Replacement.............................................F-25
Stator/Rotor Removal and Replacement (Kit S20925) .................................................F-27

Retest After Repair ..............................................................................................................F-32

TABLE OF CONTENTS

TROUBLE SHOOTING & REPAIR SECTION

POWER-ARC 4000

Section F

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