Hobart OM-1581 Welder User Manual


 
OM-1581 Page 34
5-8. Removing Contact Tip Adapter In Water-Cooled Models
WATER IN GUN PARTS can cause ELECTRIC SHOCK and can lower weld quality.
Turn Off welding power source and water supply before working on gun. Stop engine on welding generators.
Always point gun downward when removing water-cooled barrel to keep water out of gun parts.
Wipe gun dry before putting it back together.
WARNING
Turn Off weld control and welding
power source.
1 Nozzle
2 Nozzle Adapter
Remove as shown.
3 Contact Tip Adapter
Use supplied 3/32 in allen wrench
to remove adapter.
Coat new adapter with threadlock-
ing compound (such as Loctite No.
242), and install.
150 431
1
2
3
5-9. Replacing Hub Assembly
Turn Off wire feeder and welding
power source. Remove gun top
cover and open pressure roll
assembly as shown in Section 5-4.
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
5-10). Thread welding wire (see
Section 3-15). 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