Miller Electric XR Control - Manual (Page 39)

OM-1594 Page 33
7-3. Replacing Head Tube Liner In XR-Edge Guns
Ref. 801 556-C
.
Turn OFF coolant supply before
removing head tube on
water-cooled gun.
The standard head tube liner will ac-
commodate wire diameters from
.030-1/16 wire size.
When changing wire size, change
control box drive roll and idler (see
Section 7-1), gun pressure roll and
drive roll (see Sections 7-2 and 7-6).
1
Head Tube
2 Head Tube Nut
Loosen head tube nut and remove
head tube from gun.
3
Liner
Pull liner out of head tube.
Insert new liner into head tube and
reinstall head tube onto gun.
.
A twisting motion may be need-
ed to feed liner thru head tube.
.
Be sure head tube nut is secure-
ly tightened before operating
gun. If head tube nut is not ade-
quately tightened, unwanted
arcing may occur between head
tube and gun housing.
1
2
3