Lincoln cougar k2704-2 Operator's Manual page 16

Troubleshooting Guide
TESTING THE TORCH
Motor Check.
Testing the Potentiometer.
Testing the Trigger Switch.
COUGAR™ Push Pull Gun
Remove the torch connector from the cabinet.
Using the torch Control Cable Connector, check the resistance across pins "A"
and "B" (motor leads). The resistance across the motor should be between 5-10
ohms. If an open circuit or short exist, check the motor leads and motor
independently.
Using the torch Control Cable Connector, check the resistance across pin "D"
(wiper) and pin "C". The resistance should vary from 5K - 0 ohms.
Check the resistance across pin "D" (wiper) and pin "G". The resistance should
vary from 5K - 0 ohms.
Using the torch Control Cable Connector, check for continuity across pins "E"
and "F" when the trigger is pressed.
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