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7
MIG WELDING GUN OPERATION MANUAL
Trim Length:
5/8” (15.8mm)
6.0 CONSUMABLES REPLACEMENT
6.1 TORCH LINER REPLACEMENT
REPLACING THE TORCH LINER
1. Turn off power supply and detach welding gun from feeder.
2. Loosen the liner collet at the back end of the gun.
3. Remove the nozzle, tip, diffuser and old torch liner.
4. Uncoil and insert the new liner up through the back of the gun.
If it gets caught, rotate while pushing inward.
5. Push the liner all the way through the gun and place the end into the liner connector. Tighten the liner
collet onto the feeder adapter to secure in place.
6. Trim the torch liner to a stick-out of approx. 5/8” (15.8mm). When properly trimmed, the liner should travel all
the way into the diffuser. Smooth and deburr the end of the liner so there are no sharp edges. This will
prevent wire hang-up and other feeding problems from occurring.
7. Replace and tighten the diffuser, contact tip and nozzle. Re-attach the gun to the wire feeder and feed wire
back up through the gun.
TIP, NOZZLE & DIFFUSER REPLACEMENT
1. Turn off power supply and remove threaded nozzle by
turning counterclockwise.
2. Trim wire to a clean end and remove the the tip and/or
diffuser by turning counterclockwise.
3. Replace contact tip and/or diffuser as needed. Re-install tip and
diffuser with the following recommended torque settings:
• Contact Tip Torque: 40 in/lbs
• Diffuser Torque: 140 in/lbs
Tip & Diffuser calibrated torque wrenches and sockets are
available from Wire Wizard® Welding Products.
4. Replace Nozzle and Liner as needed (see below for liner
replacement instructions). Always ensure the nozzle is
threaded all the way onto the torch prior to welding.
Torch Liner Trim Length:
5/8” (15.8mm)
PowerBall®
Contact Tip
Torch Nozzle
PowerBall®
Diffuser