Lincoln Electric SP-125 PLUS, Operator'S Manual

Page: 39 / 51

SP-125 PLUS
D-4
MAINTENANCE
CHANGING LINER
NOTICE: The variation in cable lengths pre-
vents the interchangeability of liners. Once
a liner has been cut for a particular gun, it
should not be installed in another gun
unless it can meet the liner cutoff length
requirement. Refer to Figure D.2.
1. Remove gun and cable assembly from
machine.
2. Remove the gas nozzle from the gun
by unscrewing counter-clockwise.
3. Remove the existing contact tip from
the gun by unscrewing counter-clock-
wise.
4. Remove the gas diffuser from the gun
tube by unscrewing counter-clockwise.
5. Lay the gun and cable out straight on a
flat surface. Loosen the set screw locat-
ed in the brass connector at the wire
feeder end of the cable. Pull the liner
out of the cable.
6. Insert a new untrimmed liner into the
connector end of the cable. Be sure the
liner bushing is stenciled appropriately
for the wire size being used.
7. Fully seat the liner bushing into the
connector. Tighten the set screw on the
brass cable connector. At this time, the
gas diffuser should not be installed onto
the end of the gun tube.
8. With the gas nozzle and diffuser
removed from the gun tube, be sure the
cable is straight, and then trim the liner
to the length shown in the Figure D.2.
Remove any burrs from the end of the
liner.
9. Screw the gas diffuser onto the end of
the gun tube and securely tighten.
10. Replace the contact tip and nozzle.
1-1/4 (31.8 mm)
Liner Trim Length
Gas Diffuser
Contact Tip
(Threaded)
Gas Nozzle or
Gasless Nozzle
(Threaded)
Liner Assembly
(Liner bushing to be seated tight
against brass cable connector)
FIGURE D.2
Liner trim length for gun with red trigger (Magnum™ 100L)
Slotted Brass Cable
Set Screw Connector