Changing Drive Roll Or Wire Inlet Guide; Short Circuit Shutdown; Replacing Gun Contact Tip - MAC TOOLS MW135 Owner's Manual

5-3. Changing Drive Roll Or Wire Inlet Guide

2
Tools Needed:

5-4. Replacing Gun Contact Tip

Tools Needed:
OM-210 089 Page 22
3
4
1
2
1 Inlet Wire Guide Securing
Screw
2 Inlet Wire Guide
Loosen screw. Slide tip as close to
drive rolls as possible without
touching. Tighten screw.
3 Drive Roll
The drive roll consists of two differ-
ent sized grooves. The stamped
markings on the end surface of the
drive roll refers to the groove on the
opposite side of the drive roll. The
groove closest to the motor shaft is
the proper groove to thread (see
Section 3-9). NOTE: when chang-
ing drive rolls, make sure the
woodruff key is on the motor shaft,
and not in the old drive roll.
4 Drive Roll Securing Screw
Secure drive roll with screw as
shown.
Y Turn
replacing contact tip.
1 Nozzle
2 Contact Tip
Cut off welding wire at contact tip.
Remove nozzle.
Remove contact tip and install new
contact tip. Reinstall nozzle.
1
Ref. ST-802 024 / ST-802 139
Off power before
Ref. ST-149 326-A