Hobart Welding Products OM-1594 - Manual (Page 40)

OM-1594 Page 36
Turn Off wire feeder and welding
power source.
1 Top Cover
2 Pressure Roll Assembly
3 Screw
4 Pressure Roll
Remove as shown.
Use a wire brush to clean bearing.
Reinstall with washers, and tighten
screw.
Close pressure roll assembly.
Reinstall top cover.
Ref. 151 599–C
1
2
3
4
Tools Needed:
6-8. Replacing Or Cleaning Gun Drive Roll Bearing In Pistol-Grip Guns
6-9. Replacing Head Tube Liner In Pistol-Grip Guns
Ref. 143 117-E / Ref. 151 599
.
Turn OFF coolant supply
before removing head tube on
water-cooled gun.
Head tube liner is available for the
following wire size ranges:
.030-.040 wire size
.047-.062 wire size
When changing wire size, change
control box drive roll and idler (see
Section 6-1), gun drive roll (see
Sections 6-2 and 6-7), and gun
head tube liner.
1 Cover
2 Screw
3 Clamp
Loosen clamp screws and remove
clamp.
4 Head Tube
Remove head tube from gun.
5 O-Ring
6 Liner
Pull liner and o-ring out of head
tube.
Insert new o-ring and liner (o-ring
first) into head tube and reinstall
head tube onto gun.
4
5
6
Insert chamfered end
of liner into head tube.
5/32 in
1
2
3
4
Tool Needed: