5-3. Changing Liner
Y Turn Off power at welding power source first.
1 Nozzle
2 Contact Tip
3 Liner
Remove and replace liner. Reinstall parts as shown.
3
2
1
Tools Needed:
Ref. 801
5-4. Troubleshooting
Trouble | Remedy |
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Gun tube assembly loose. | Tighten nut at base of gun tube assembly. |
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No weld output; gun/feeder does not | Place Power switch on welding power source in the On position (see welding power source Owner’s |
work. | Manual). |
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Erratic weld output. | Tighten and clean all connections. |
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Pressing gun/feeder trigger does not | Secure plug from gun/feeder trigger cord into |
energize welding power source; welding | |
wire is not energized; shielding gas does |
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not flow. |
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Wire feeds, shielding gas flows, but | Secure control cable leads in welding power source (see field kit instructions F207 643 or appropriate |
welding wire is not energized. | welding power source Owner’s Manual). |
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| See Troubleshooting section in welding power source Owner’s Manual. |
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Wire feeds erratically. | Check and correct drive roll pressure (see Section |
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| Clean or replace drive roll; clean or replace liner (see Sections |
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