Changing Drive Roll And Wire Inlet Guide; Aligning Drive Rolls And Wire Guide - Miller Millermatic 251 Owner's Manual

6-3. Changing Drive Roll and Wire Inlet Guide

Tools Needed:
7/16 in

6-4. Aligning Drive Rolls and Wire Guide

Tools Needed:
2
1
3
Correct
4
3
2
1
4
Incorrect
5
1 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
different 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 4-13).
4 Drive Roll Securing Nut
Turn nut one click to secure drive
roll.
Ref. 802 990-A
Y Turn Off power.
View is from top of drive rolls
looking down with pressure
assembly open.
1 Drive Roll Securing Nut
2 Drive Roll
3 Wire Guide
4 Welding Wire
5 Drive Gear
Insert screwdriver, and turn screw
in or out until drive roll groove lines
up with wire guide.
Close pressure roll assembly.
Ref. 800 412-A
OM-1326 Page 25