Liner Installation & Trimming Instructions - Lincoln Electric MAGNUM 400 DUAL PROCEDURE IM646-A Operator's Manual

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LINER INSTALLATION AND TRIMMING INSTRUCTIONS
Installation of (KP44 and KP44N liner series)
a. Lay the gun and cable straight on a flat surface.
b. Make sure that the set screw in the connector end
is backed out so as not to damage liner or liner
bushing. Remove and save the gas nozzle, nozzle
insulator, and gas diffuser from the end of the gun
tube assembly.
c. Insert a new untrimmed liner into the connector
end of the cable. Be sure the liner bushing is sten-
ciled appropriately for the wire size being used.
NOTE: For KP44N and KP45N liner series.
Before fully seating the liner bushing, it will be nec-
essary to trim the linerʼs inner tube flush with the
liner bushing using a sharp blade. After trimming,
remove any burrs from inner tube and insure that
the opening is fully open.
d. Before installing the gas diffuser, fully seat the liner
bushing in the connector and:
For all K466 connector kits except K466-3 and
K466-4, tighten the set screw in the cable connec-
tor.
For K466-3 and K466-4, screw in the connector
cap provided in the kit until it seats on the face of
the bushing. Then insert the appropriate piece of
liner material into the connector cap and tighten the
set screw. Three pieces of liner material are includ-
ed in these connector kits to help guide the elec-
trode through the connector cap. The piece with
the smallest inner diameter is designed for .045"
(1.2 mm) maximum diameter electrode. The next
largest diameter is for 1/16" (1.6 mm) maximum
diameter electrode. The largest diameter piece of
liner material is for 5/64" (2.0 mm) maximum diam-
eter electrode.
e. Be sure the cable is straight and then trim the liner
to the length shown in Figure B.1 (a gauge is
included on the wrench provided with the connec-
tion kit for gauging the cut-off length on 300 and
400 amp gun tubes). Remove any burrs from the
end of the liner.
f. Screw the gas diffuser onto the end of the gun tube
and tighten with the wrench provided.
g. Tighten the set screw in the side of the gas diffuser
against the cable liner using the Allen wrench pro-
vided.
INSTALLATION
or
MAGNUM® 400 DUAL PROCEDURE GUNS
CAUTION
This screw should only be gently tightened.
Overtightening will split or collapse the liner and
cause poor wire feeding.
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h. Replace the nozzle insulator and gas nozzle.
INSTALLATION OF KP1958 SERIES LINERS FOR
FEEDING ALUMINUM ELECTRODE
1. Lay the gun out straight on a flat surface and
remove the gas nozzle.
A. For all K466 except K466-3 and K466-4 connec-
tions, back out the set screw in the connector
end with a 5/64 (2.0 mm) Allen wrench.
B. For all K466-3 and K466-4 connections: Remove
the connector cap.
C. Back out the set screw in the diffuser for guns
that have a set screw in the diffuser.
2. Remove the liner and insert a new untrimmed liner
into the connector end of the cable. Check that the
coils of the spring liner can be seen through the
holes in the gas diffuser.
A. For all K466-3 and K466-4 connections: If the
liner is going to be replaced with a different size
liner, loosen the set screw on the connector cap
and replace the liner material with the correct
size.
3. Mark the liner 3/16" (5 mm) from the end of the
liner guide or connector. Pull the liner partially out
and cut off the liner at the mark using a sharp
knife.
4. Screw the brass liner nipple onto the liner and fully
seat the liner busing into the liner guide or the con-
nector.
A. For connector kits, except K466-3 and K466-4,
tighten the set screw in the cable connector.
B. For K466-3 and K466-4, screw in the connector
cap.
5. For guns with a diffuser set screw, tighten the set
screw in the side of the gas diffuser against the
cable liner using the Allen wrench provided.
CAUTION
This screw should only be gently tightened.
Overtightening will split or collapse the liner and
cause poor wire feeding.
------------------------------------------------------------------------
6. Replace the nozzle insulator and gas nozzle.
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