Miller Electric XR Control Welder User Manual


 
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.
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2
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