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D-4
D-4
MAINTENANCE
SP 170-I
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 require-
ment. Refer to Figure D.2a or D.2b.
1. Remove the gas nozzle from the gun
(threadless slip-fit or threaded).
2. Remove the existing contact tip from the
gun by twisting counter-clockwise.
3. If the gun is a Magnum 100L Fig D.2b.
Remove the gas diffuser from the gun
tube by unscrewing counter-clockwise.
4. Lay the gun and cable out straight on a
flat surface. Loosen the set screw located
in the brass connector at the wire feeder
end of the cable. Pull the liner out of the
cable.
5. Insert a new untrimmed liner into the con-
nector end of the cable. Be sure the liner
bushing is stenciled appropriately for the
wire size being used.
6. Fully seat the liner bushing into the con-
nector. Tighten the set screw on the brass
cable connector.
7A. (For Gun Shown in Fig D.2a)
With the torch extended straight out, cut
the liner flush with the end of the diffuser.
Rotate the gun clockwise until the liner
protrudes out the end of the diffuser
enough to cut off an additional 2 coils
(approx. 2mm). Rotate the handle back to
the original position.
7B. (For Gun Shown in Fig D.2b)
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.2b. Remove
any burrs from the end of the liner. Screw
the gas diffuser onto the end of the gun
tube and securely tighten.
8. Replace the contact tip and nozzle.
Gas Diffuser
Contact Tip
Gas Nozzle or
Gasless Nozzle
(Slip-Fit)
Allen Brass Cable
Head Screw Connector
Liner Assembly
(Liner bushing to be seated tight
against brass cable connector)
FIGURE D.2a
Liner trim length for gun (Lincoln Electric®)
1-1/4 (31.8 mm)
Liner Trim Length
Gas Diffuser
Contact Tip
Gas Nozzle or
Gasless Nozzle
(Threaded)
Liner Assembly
(Liner bushing to be seated tight
against brass cable connector)
FIGURE D.2b
Liner trim length for gun (Magnum™ 100L)
Allen Brass Cable
Head Screw Connector