What should you do when the liner becomes kinked?

What should you do when the liner becomes kinked?

• A. Replace it.
• B. Squeeze it in a vice until it straightens out and place it back into service.
• C. Cut the kinked portion out, rejoin using manufacturer-approved fittings and place it back into service.
• D. Stretch the liner until it straightens out and place it back into service.

Answer: (A)

When a liner becomes kinked, replace it. A kinked liner cannot be safely repaired in place because the bend disrupts the wire’s path, creating extra friction, feeding jams, and an irregular inner diameter that can cause bird-nesting or arcing. Trying to squeeze, stretch, or cut and rejoin the liner can introduce burrs, misalignment, and leaks, which compromise wire feeding and shielding gas coverage. Using a manufacturer-approved replacement preserves a smooth, straight bore and proper fit, ensuring reliable wire feed and gas shielding. After replacement, check that the liner sits correctly and run a test feed to confirm smooth operation.

When a liner becomes kinked, replace it. A kinked liner cannot be safely repaired in place because the bend disrupts the wire’s path, creating extra friction, feeding jams, and an irregular inner diameter that can cause bird-nesting or arcing. Trying to squeeze, stretch, or cut and rejoin the liner can introduce burrs, misalignment, and leaks, which compromise wire feeding and shielding gas coverage. Using a manufacturer-approved replacement preserves a smooth, straight bore and proper fit, ensuring reliable wire feed and gas shielding. After replacement, check that the liner sits correctly and run a test feed to confirm smooth operation.