SECTION 5 − MAINTENANCE & TROUBLESHOOTING

5-1. Replacing Gun Contact Tip

 

 

 

Y Turn off welding power source.

 

 

 

1

Nozzle

 

 

 

Remove nozzle.

 

 

 

2

Contact Tip

 

2

3

3

Tip Adapter

 

 

Cut off welding wire at contact tip.

Tools Needed:

 

 

1

 

Remove contact tip from tip adapter,

 

 

 

 

 

and install new contact tip. Reinstall

 

 

 

nozzle.

 

 

 

 

Ref. 803 496-B

5-2. Cleaning Gun Liner

 

 

 

 

 

 

Y Turn off welding power source.

 

 

 

1

Nozzle

 

 

 

2

Contact Tip

 

 

 

3

Adapter

1

Head

 

 

 

Tube

 

 

 

 

 

 

 

2

3

 

 

 

 

 

 

 

8 mm

Remove nozzle. Cut off wire

Open pressure assembly. Retract

. Hold wire tightly to keep it

at contact tip, and remove

wire from liner onto spool.

from unraveling. Secure

contact tip and tip adapter.

 

 

 

 

 

 

end of wire at spool.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Tools Needed:

Lay gun cable out straight, and blow out liner.

8 mm

Remove screws (3) from cover, and remove cover from wire drive assembly.

Reassemble drive cover

. Thread wire according to

and gun in reverse order

Section 3-4.

from taking it apart.

 

 

803 496-B / 803 838-A

OM-952 Page 7

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Hobart Welding Products H-9A Gun manual Maintenance & Troubleshooting, Replacing Gun Contact Tip, Cleaning Gun Liner