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.
23