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Liner Removal And Replacement - Lincoln Electric POWER MIG 216 Manuel De L'opérateur

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D-2
LINER REMOVAL AND REPLACE-
MENT
NOTE: Changing the liner for a different wire size
requires replacement of the gas diffuser per Table D.1
to properly secure the different liner.
TABLE D.1
Replacement
Diameter of
Liner Part
Electrodes Used
Number
.025"-.030" Steel
KP42-25-15
(0.6-0.8 mm)
.035"-.045" Steel
KP42-4045-15
(0.9-1.1 mm)
3/64" Aluminum
KP42-4045-15
(1.2 mm)
LINER REMOVAL, INSTALLATION AND TRIMMING
INSTRUCTIONS FOR MAGNUM PRO 250L
NOTE: The variation in cable lengths prevents the
interchangeability of liners between guns. 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. Liners are shipped with the
jacket of the liner extended the proper amount.
1. Remove the gas nozzle and nozzle insulator, if
used, to locate the set screw in the gas diffuser
which is used to hold the old liner in place. Loosen
the set screw with a 5/64" (2.0 mm) Allen wrench.
2. Remove the gas diffuser from the gun tube.
3. Lay the gun and cable out straight on a flat surface.
Loosen the set screw located in the brass connec-
tor at the feeder end of the cable and pull the liner
out of the cable.
4. Insert a new untrimmed liner into the connector
end of the cable. Be sure the liner bushing is sten-
cilled appropriately for the wire size being used.
5. Fully seat the liner bushing into the connector.
tighten the set screw on the brass cable connector.
The gas diffuser, at this time, should not be
installed onto the end of the gun tube.
6. With the gas diffuser still removed from the gun
tube, be sure the cable is straight, and then trim
the liner to the length shown in Figure D.1.
Remove any burrs from the end of the liner.
MAINTENANCE
Fixed
Nozzle
Size Stencilled
Gas Diffuser
on End of
Part No.
Liner Bushing
(and Stencil)
.030" (0.8 mm)
.045" (1.1 mm)
KP2746-1
3/64" (1.2 mm)
POWER MIG® 216
7. Screw the gas diffuser onto the end of the gun tube
and securely tighten. Be sure the gas diffuser is
correct for the liner being used. (See table and dif-
fuser stencil.)
8. Tighten the set screw in the side of the gas diffuser
against the cable liner using a 5/64" (2.0 mm) Allen
wrench.
FIGURE D.1
SET SCREW
BRASS CABLE CONNECTOR
NOZZLE INSULATOR (IF USED)
CAUTION
This screw should only be gently tightened.
Overtightening will split or collapse the liner and
cause poor wire feeding.
------------------------------------------------------------------------
D-2
1-1/4"
(31.8mm)
LINER
TRIM
LENGTH
SET SCREW
GAS DIFFUSER
GAS NOZZLE

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