Hobart Welding Products OM-184 693C Benutzerhandbuch
OM-184 693 Page 11
4-3.
Gun Drive Assembly Maintenance
Ref. 149 967-C / Ref. 800 945-A
Retract wire onto spool.
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 diameter contact tip is rec-
ommended. See options in Parts
List.) Lightly grease top of tab be-
fore reinstalling.
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 diameter contact tip is rec-
ommended. See options in Parts
List.) Lightly grease top of tab be-
fore reinstalling.
3
Drive Roll
Use wire brush to clean drive roll.
Install drive roll with desired groove
down, and turn drive roll so one
setscrew faces flat side of shaft.
Install drive roll with desired groove
down, and turn drive roll so one
setscrew 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.
Tighten setscrews.
Line up drive roll groove with bear-
ing groove and liner opening.
Tighten setscrews.
Thread welding wire through gun
(see Section 3-3). Close and se-
cure pressure roll assembly. Adjust
drive roll pressure, if necessary
(see Section 3-8). Reinstall top
cover.
(see Section 3-3). Close and se-
cure pressure roll assembly. Adjust
drive roll pressure, if necessary
(see Section 3-8). Reinstall top
cover.
Tools Needed:
5/16 in
3
1
2
4