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OM-226 857 Page 18
5-3. Changing Liner
Ref. 801 891-A
Tools Needed:
! Turn off and disconnect
input power.
1 Nozzle
2 Contact Tip
3 Liner
Remove and replace liner.
Reinstall parts as shown.
1
2
3
5-4. Troubleshooting
Trouble Remedy
Gun tube assembly loose. Tighten nut at base of gun tube assembly.
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).
Erratic weld output. Tighten and clean all connections.
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
3-5, field kit instructions F207 643, or appropriate welding power source Owner’s Manual).
Wire feeds, shielding gas flows, but
welding wire is not energized.
Secure control cable leads in welding power source (see field kit instructions F207 643 or appropriate
welding power source Owner’s Manual).
See Troubleshooting section in welding power source Owner’s Manual.
Wire feeds erratically. Check and correct drive roll pressure (see Section 3-6).
Clean or replace drive roll; clean or replace liner (see Sections 5-2 and 5-3).