B-3
INSTALLATION
B-3
INSTALLATION OF M18732 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. Screw the gas diffuser onto the end of the gun tube
and tighten with the wrench provided. Use appro-
priate size wrench for K3094, K3097 and K3098
models.
6. Replace the nozzle insulator and gas nozzle.
CONTACT TIP AND GAS NOzzLE INSTALLATION
a. Choose the correct size contact tip for the elec-
trode being used (wire size is stenciled on the side
of the contact tip) and screw it snugly into the gas
diffuser.
b. Install the appropriate gas nozzle onto the diffuser.
The proper nozzle should be selected based on the
welding application. Different length nozzles are
available to fit 350, 450 and 550 amp gun tubes to
allow either spray or short-circuiting transfer weld-
ing.
Choose the gas nozzle as appropriate for the
GMAW process to be used. Typically, the contact
tip end should be flush to .12” (3.1 mm) extended
for the short-circuiting transfer process and .12”
(3.1 mm) recessed for spray transfer. For the
Outershield (FCAW) process, 1/8” (3 mm) recess is
recommended.
CONNECTION TO FEEDER
NOTE:
The MAGNUM
®
PRO DS is shipped with
generic gun control cables, therefore Section (c) will
not apply. The gun control cables must be tailored, by
the user, to each specific wire feeder. The cables are
identified as procedure 1 and 2.
To install on Lincoln wirefeeders equipped with a dual
procedure kit, connect the cable marked "1" to the 5
pin amphenol located on the feeder case front. The
cable marked "2" should be connected to the 3 pin
amphenol located on the dual procedure box.
CONNECTION TO LINCOLN FEEDERS
Gun cable assemblies which were assembled with a
K466-1 or -8 Connection Kit will connect easily to any
Lincoln LN-7, LN-8, LN-9, SP-200 or LN-25 feeder.
a. Check that the drive roll(s) and feeder guide tubes
are appropriate for the electrode size being used.
b. Fully push the brass connector end of the gun
cable into the conductor block on the outgoing side
of the feeder wire drive. Secure the cable using the
hand screw or set screw in the conductor block.
c. Insert the control cable plug from the feeder trigger
circuit into the mating socket on the feeder end
cable handle (See K466-1 Installation Section.)
d. Slide the free end of the flexible hose onto the
barbed gas fitting on the front of the Lincoln feeder
(See K466-1 or -8 Installation Section.) Move the
corresponding tubing clamp down near the end of
the tube to assure a good gas seal.
MAGNUM® PRO 350, 450 AND 550 DUAL PROCEDURE & DUAL SCHEDULE