Hobart OM-1581 manual Removing Contact Tip Adapter In Water-Cooled Models, Replacing Hub Assembly

5-8. Removing Contact Tip Adapter In Water-Cooled Models

WARNING

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.

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2

1

Turn Off weld control and welding power source.

1Nozzle

2Nozzle Adapter Remove as shown.

3Contact 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

5-9. Replacing Hub Assembly

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2

3

4

Tools Needed:

7/16 in

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.

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151 778-B / Ref. 143 223-A

OM-1581 Page 34