Miller Spoolmatic 30A Manuel Du Propriétaire page 18

5-3. Gun Drive Assembly Maintenance
3
1
2
Tools Needed:
5/16 in
OM-1213 Page 16
Cut off wire where it enters drive roll
assembly area.
1 Setscrew
2 Current Pick-Up Tab
This tab helps prevent burnback
caused by welding arcs inside the
contact tip. This tab may be re-
moved to provide an insulated drive
roll. (If tab is removed, a smaller di-
ameter contact tip is recom-
mended. See options in Parts List.)
Lightly grease top of tab before rein-
stalling.
3 Drive Roll
Use wire brush to clean drive roll.
Install drive roll with desired groove
down, and turn drive roll so one set-
screw faces flat side of shaft.
4 Bearing
Use wire brush to clean bearing.
Line up drive roll groove with bear-
ing groove and liner opening. Tight-
en setscrews.
Thread welding wire (see Section
3-3). Close and secure pressure
roll assembly. Adjust drive roll pres-
sure, if necessary (see Section
3-8). Reinstall top cover.
4
Ref. ST-149 967-B