Hobart Welding Products DP-3035 manual Changing Liner, Troubleshooting

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. 804 687-A

5-4. Troubleshooting

Trouble	Remedy
Gun tube assembly loose.	Tighten nut at base of gun tube assembly.
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). 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	Secure plug from gun/feeder trigger cord into 4-socket receptacle on welding power source (see Section
energize welding power source; welding	3-3).
wire is not energized; shielding gas does
	Place Spool Gun/MIG Gun switch in Spool Gun position (see Section 3-3).
not flow.
Wire feeds, shielding gas flows, but	Secure spool gun cable connector to wire drive assembly inside welding power source (see Section 3-3).
welding wire is not energized.
	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 5-2and 5-3).

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