Replacing Liner O-Ring - Hobart H-9 Gun Owner's Manual

5-4. Replacing Liner O-Ring

8 mm
Remove nozzle. Cut off wire
at contact tip, and remove
contact tip and tip adapter.
Remove screws (3) from
cover, and remove cover
from wire drive assembly.
Black tubing end of
liner.
OM-948 Page 10
Head
Tube
Open pressure assembly. Retract
wire from liner onto spool.
Pull end of liner out from
housing groove, Lay gun
cable straight on a flat
surface. Pull liner until it
exits the head tube. It is not
necessary to completely
remove liner from gun.
2 mm
Loosen liner setscrew Twist handle locking ring counterclockwise
with allen wrench. 1/4 turn and slide it down cable. Separate
gun handle by lifting top rear portion up and
sliding forward over head tube.
Loosen collar setscrew with
allen wrench. Remove collar
and O-ring. Install replacement
O-ring, reinstall collar, and
tighten setscrew.
Y Turn off welding power source.
Tools Needed:
8 mm / 10 mm
.
Hold wire tightly to keep it
from unraveling. Secure
end of wire at spool.
O-Ring
2 mm
Collar
803 496-B / 803 497-A