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7. Take gun handle halves apart by remov-
ing five phillips head screws.
8. Remove liner from fast coupler fitting on
gas valve. Depress lip on fast coupler
back towards fitting and pull liner out.
9. Remove liner from outer torch sleeve and
pull out.
10. Remove fast coupler fitting from gas
valve.
11. Install new liner, starting from handle end
and feeding towards unit with fitting end
of I_ner going towards the gas valve.
12. Fitllner for length at feeder end by cut-
ting liner with wire cutters.
13. Reinstall liner holding clamp at feeder.
14. Return all components to the handle
casing and realign them as they were
originally.
15. With both halves of the handle case in
place, tighten the five phillips head
screws.
16. Reinstall the welding wire according to
specifications in INSTALL THE WELDING
WIRE section.
17. Close side panel.
18. Plug welder into power supply and turn
POWER SWITCH to ON position.
Drive Drive Gun
Tension Tension Assembly
Adjustment Arm (Tail
Inlet
Guide
Tube
®
Strain
Drive Jn Relief
Roller Liner Clamp
Figure 21. Drive Assembly
Nozzle
Contact Tip
Gas Diffuser
Conductor Tube
Jbe
Insulation
Trigg
.
Live Wire
Gas Hose
Switch
Contacts
Gun
Liner
Handle
Casing
Switch
Wire
Gun
Cable
Switch
Wire
Figure 22. Gun Assembly
PREVENTIVE MAINTENANCE
Except for internal and external cleaning,
cleaning the nozzle, and occasionally
retightening screws, there is no periodic
maintenance recommended for your welder.
TROUBLESHOOTING
The following TROUBLESHOOTING
information is provided as a guide to help
resolve some of the more common problems
that could be encountered. Table 4 is a
troubleshooting table provided to help you
determine a possible remedy when you are
having a problem with your welder. This table
does not provide all possible solutions, only
those possibilities considered to likely be
common faults. The table consists of a
TROUBLE or symptom, a POSSIBLE
CAUSE for the symptom, and a POSSIBLE
REMEDY for that symptom.
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