Miller Spoolmatic 30A Owner's Manual - Page 20
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7-3. Replacing Head Tube Liner
2
2
7-4. Removing Diffuser In Air And Water-Cooled Pistol-Grip Guns
!
Turn Off welding power source and
water supply.
!
Water in gun parts can cause elec-
tric shock and can lower weld quali-
ty.
OM-264 713 Page 16
3
1
2
3
Air Cooled Head Tube Assembly
Always point gun downward when
removing water-cooled barrel to
keep water out of gun parts.
Wipe gun dry before putting it back
together.
.
The standard head tube liner
(yellow) will accommodate wire
diameters from 3/64 in. - 1/16 in.
wire size.
When changing wire size, change
gun drive roll.
1
2
1
Remove head tube from gun.
3
Pull liner out of head tube.
Insert new liner into head tube and
reinstall head tube onto gun.
.
1
Nozzle
2
FasTip
To remove, see Section 7-5.
3
Diffuser
Remove diffuser and replace.
Turn Off coolant supply before
removing
head
tube
on
water-cooled gun.
Cover
Head Tube
Liner
A twisting motion may be need-
ed to feed liner thru head tube.
Ref. T0055-B
Ref. T0027
Tools Needed:
3/8 in.