Replacing Head Tube Liner In Xr-Alumapro Guns; Changing Gun Contact Tip - Miller XR - AlumaPro Owner's Manual

6-5. Replacing Head Tube Liner In XR-AlumaPro Guns

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6-6. Changing Gun Contact Tip

OM-227 398 Page 16
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2
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The standard head tube liner
(yellow) will accommodate wire
diameters from 3/64 in.- 1/16 in. wire
size.
When changing wire size, change
control box drive roll, idler and head
tube liner with appropriate sized lin-
er.
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2
Loosen head tube nut and remove
head tube from gun.
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Pull liner out of head tube.
Insert new liner into head tube (install
tapered end first) and reinstall head
tube onto gun.
.
NOTICE − Be sure head tube is
seated and head tube nut is securely
Tapered end
tightened before operating gun. If
head tube nut is not adequately tight-
ened, unwanted arcing may occur
between head tube and gun housing.
Remove nozzle
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2
Unscrew FasTip.
Install new FasTip.
NOTICE − Make sure correct size
contact tip is being used. Incorrect
size may cause arcing inside tip,
poor feedability and poor arc start-
ing characteristics(see Section 9).
Reinstall nozzle.
Head Tube
Head Tube Nut
Head Tube Liner
A twisting motion may be need-
ed to feed liner thru head tube.
Ref. 804 544-B
Nozzle
FasTip
Ref. 804 709-A