Lincoln Electric IM591 UWW-170 - Manual (Page 37)

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 (cam-
lock) or unscrewing (threaded).
3. 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. At this time, the gas dif-
fuser should not be installed onto the end
of the gun tube.
7. 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.2a or D.2b.
Remove any burrs from the end of the
liner.
8. Screw the gas diffuser onto the end of the
gun tube and securely tighten.
9. Replace the contact tip and nozzle.
5/8 ” (15.9 mm)
Liner Trim Length
Gas Diffuser
Contact Tip
(Cam-Lock)
Gas Nozzle or
Gasless Nozzle
(Slip-Fit)
Slotted Brass Cable
Set Screw Connector
Liner Assembly
(Liner bushing to be seated tight
against brass cable connector)
FIGURE D.2a
Liner trim length for gun with black trigger (Lincoln Electric ® )
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.2b
Liner trim length for gun with red trigger (Magnum ™ 100L)
Slotted Brass Cable
Set Screw Connector