Miller Electric XR A - Manual (Page 39)

OM-1581 Page 35
6-9. Replacing Hub Assembly
Turn Off wire feeder and welding
power source. Remove gun top
cover and open pressure roll
assembly as shown in Section 6-4.
Retract wire onto spool and remove
spool. Take hub apart as shown.
1
Metal Brake Washer
2 Flat Washer
3 Brake Washer
4 Hub
5 Keyed Washer
6 Spring
7 Cap Screw
8 Retaining Ring
Replace broken or worn parts and
slide parts onto shaft as shown.
Adjust hub tension (see Section
6-10). Thread welding wire (see
Section 4-14). Close and latch door.
Close gun pressure roll assembly
and reinstall gun cover.
151 778-B / Ref. 143 223-A
Tools Needed:
1
2
3
4
5
6
2
7
8
7/16 in