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5-7. Routine Maintenance
| Y Turn Off welding power source before maintaining. |
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| Each Spool Of Wire |
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| Blow Out |
| Clean | |
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| Nozzle | ||
| Gun |
| And Check | |
| Casing |
| Contact Tip | |
| 3 Months |
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Replace |
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Cracked | Control | Gas |
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Parts |
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Cord | Hose | Gun Cable | ||
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5-8. Troubleshooting
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| Trouble |
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| Remedy | ||
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| Wire does not feed; wire is not ener- |
| Check contact tip. Check for kinks in gun cable. | ||||
| gized; wire feeds unevenly. |
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| Check contact tip. Check for kinks in gun cable. Blow out gun liner (see Section | ||||||
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| Check for secure gun trigger lead connections at PC1 (see Section | |
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| Check, and if necessary, replace gun trigger switch (see Section | |
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| Weld porosity. |
| Remove weld spatter buildup in nozzle. | ||||
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| Make sure inner head tube is tight in cable connector. | |
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| Check shielding gas flow/supply. | |
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| Replace liner | |
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| Wire feeding stops or does not feed |
| Straighten gun cable and/or replace damaged parts (see Section | ||||
| properly during welding. |
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| Adjust drive roll pressure (see Section | |
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| Change to proper drive roll groove (see welding power source manual). | |
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| Readjust hub tension (see weld power source manual). | |
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| Clean or replace liner if dirty or plugged (see Section | |
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| Replace drive roll or pressure bearing if worn or slipping (see welding power source manual). | |
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