Changing Feeder Drive Roll And Wire Inlet Guide - Miller Electric XR A Owner's Manual

6-3. Changing Feeder Drive Roll And Wire Inlet Guide

Tools Needed:
5/16 in
2
8
4
3
5
Turn Off wire feeder and welding
power source. Lay wire conduit out
straight.
Open gun pressure roll assembly,
and cut welding wire off at contact
tip.
1 Pressure Roll Assembly
2 Wire Spool
For welding power sources without
contactor, retract wire onto spool.
For welding power sources with a
contactor, energize power source,
turn On feeder, press Brake Re-
lease button, and retract wire onto
spool.
6
3 Shaft
4 Setscrew
5 Drive Roll
Use wire brush to clean drive roll.
Install drive roll with desired groove
in, and turn drive roll so one
1
setscrew faces flat side of shaft.
6 Bearing
7 Wire Conduit Fitting
Line up drive roll groove with bear-
7
ing groove and opening in conduit
fitting. Tighten setscrews.
8 Wire Inlet Guide
Pull guide toward rear of feeder to
remove. Install new guide.
Thread welding wire and adjust
drive roll pressure, if necessary
(see Section 4-14). Close and se-
cure pressure roll assembly. Close
and latch door.
Close gun pressure roll assembly,
and reinstall gun cover.
151 778 / Ref. 151 781-B
OM-1581 Page 31