5
Installation of insulated steel liners in Euro
or direct mount guns
Note: When using sizes .078” to .094”, Run the cable liner to the contact tip.
1. Lay the torch out straight and remove the swanneck.
2. Remove the liner retaining nut at the wire feed end of the torch and remove the old
liner if fi tted.
3. Check that the new liner has no kinks in it.
4. Gently feed the liner through the cable assembly from the machine end of the torch,
taking care not to kink it in the process.
5. With the liner collet now fully seated in the rear connection, replace the liner
retaining nut.
6. At the front end of the torch, the liner will now protrude from the handle
7. Measure 2mm from the end of the brass swanneck-mounting block, and cut the liner
with a pair of sharp cutters
(see above).
8. Check to ensure that there are no burrs or obstructions to the inner
diameter of the liner.
9. Reseat the swanneck on the torch body, adjust to the preferred position and tighten
the locking ring.
*
10. The torch is now ready to be fi tted to the wire feed unit.
*
NOTE: If using pass through style liners, trim excess liner as close to the drive rolls as possible
without making contact.
Installation of Plastic Liners for aluminum/
stainless steel in direct mount guns
1. Lay the torch out straight and remove the liner retaining nut at the wire feed end of
the torch cable.Remove the existing gun liner if fi tted. If switching from a steel liner,
remove the swanneck and fi t the appropriate brass neck liner for aluminum –stock
number B2440 for wires .024” to .040” (.6mm-1.0mm) or B4052 for wires .040” to
.052” (1.0mm-1.4mm) – as per instructions on pages 2 and 3. Replace the swanneck
with brass neck liner fi tted.
2. Gently feed the plastic liner through the cable assembly until the liner bottoms out
in the neck liner collet. If unsure whether the liner is in the neck liner collet as far as
it can go, remove the swanneck, feed the liner through so that it protrudes 7-8mm
from the body, taking care not to kink the liner. Replace the swanneck, inserting the
protruding end of the liner into the neck liner collet, and tighten down the swanneck
locking ring. Push the liner again to make sure it has bottomed in the neck liner collet.
6
3. At the machine end of the torch, slide the brass collet, and O-ring over the liner until
they are seated in the rear connection.
4. Install the plastic liner nut, which is supplied in the connector kit. This is the nut with
the large hole for the liner to exit through. Do not overtighten the nut as this can result
in wire feed problems. Do not cut the excess liner yet!
5. With the plastic liner still protruding from the rear of the torch, feed the torch into
the feeder mounting block. Lift the feed rollers of the wire feeder to enable the excess
liner material to pass through. Using a sharp tool, cut the liner so that it butts up to
the feed rollers. This will provide the needed wire support to the soft wire immediately
after it exits the drive rolls. If the liner is trimmed correctly, and the wire hub tension is
set properly, “bird-nesting” in the event of a wire jam will be eliminated.
6. Secure the torch rear end into the feeders mounting block by the method used by the
feeder manufacturer (normally a set screw).
7. Reduce the feeder’s wire hub tension by backing off the nut in the center of the hub
until the friction is only enough to stop the wire spool from spinning free. After
confi rming that the feed rolls are the correct size and type for the wire being used,
and that the wire is fed into the liner correctly, back off the wire feed roll pressure
until the feed rolls no longer feed the wire, then retighten slightly. Be cautious, as too
much pressure will deform soft wires such as aluminum and cause the wire to jam in
the contact tip. To help prevent wire deformation, a U-groove feed roll is better than a
V-groove feed roll for soft wires.
9. Aluminum wire requires a contact tip with a greater clearance than that used for
steel. (See individual torch parts lists and consumable charts on pages 9-10.)
Installation of Plastic Liners for aluminum/
stainless steel in Euro Quick-Connect guns
1. Lay the torch out straight and remove the liner retaining nut at the wire feed end of
the torch cable.Remove the existing gun liner if fi tted. If switching from a steel liner,
remove the swanneck and fi t the appropriate brass neck liner for aluminum –stock
number B2440 for wires .024” to .040” (.6mm-1.0mm) or B4052 for wires .040” to
.052” (1.0mm-1.4mm) – as per instructions on pages 2 and 3. Replace the swanneck
with brass neck liner fi tted.
2. Gently feed the plastic liner through the cable assembly until the liner bottoms out
in the neck liner collet. If unsure whether the liner is in the neck liner collet as far as
it can go, remove the swanneck, feed the liner through so that it protrudes 7-8mm
from the body, taking care not to kink the liner. Replace the swanneck, inserting the
protruding end of the liner into the neck liner collet, and tighten down the swanneck
locking ring. Push the liner again to make sure it has bottomed in the neck liner collet.