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5-3.

Changing Liner

Turn off and disconnect input power.

1

Nozzle

2

Contact Tip

3

Liner

Remove and replace liner. Reinstall parts as shown.

3

2

1

Tools Needed:

Ref. 804 687-A

5-4.

Troubleshooting

Trouble Gun tube assembly loose.

Tighten nut at base of gun tube assembly.

Remedy

No weld output; gun/feeder does not work.

Place Power switch on welding power source in the On position (see welding power source Owner’s Manual). Check Spool Gun/MIG Gun switch for correct position.

Erratic weld output.

Tighten and clean all connections. Check for proper weld output polarity connections (see Section 3-3).

Pressing gun/feeder trigger does not energize welding power source; welding wire is not energized; shielding gas does not flow.

Secure plug from gun/feeder trigger cord into 4-socket receptacle on welding power source (see Section 3-3).

Place Spool Gun/MIG Gun switch in Spool Gun position (see Section 3-3).

Wire feeds, shielding gas flows, but welding wire is not energized.

Secure spool gun cable connector to wire drive assembly inside welding power source (see Section 3-3).

See Troubleshooting section in welding power source Owner’s Manual.

Wire feeds erratically.

Check and correct drive roll pressure (see Section 3-4).

Clean or replace drive roll; clean or replace liner (see Sections 5-2 and 5-3).

OM-230 261 Page 17

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