Hobart Welding Products DP 3035-20 - Manual (Page 21)

OM-230 261 Page 17
5-3. Changing Liner
Ref. 804 687-A
Tools Needed:
! Turn Off power at welding
power source first.
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). 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).