Lincoln Electric IM10080 RED-D-ARC LN-25 PRO EXTREME DUAL POWER - Manual (Page 15)

A-6 INSTALLATION
RED-D-ARC LN25™ PRO EXTREME DUAL POWER
A-6
GUN BUSHING, THUMB SCREW AND SET
SCREW
(See Figure A.2a for Code 12164)
The gun bushing is not interchangeable with other
bushings. It is designed to be mechanically mounted
in the feed plate and then bolted directly to the feed-
erʼs internal electrical welding buss bar. It accepts
Magnum Pro guns (Tweco #2 to #4). This bushing
should be removed only for service replacement. It is
secured to the feed plate with an S11604-10 set
screw torqued between 35 to 45 in.-lbs.
Tools required:
• 1/4" hex key wrench, (2) 3/4” Box Wrenches,
3/4” STD. Socket, Adjustable Torque Wrench
(Snap Type)
1. Turn power off at the welding power source.
2. Remove the welding wire from the wire drive.
3. Remove the welding buss bar from the gun bush-
ing assembly.
4. Remove the thumb screw from the wire drive.
5. Remove the welding gun from the wire drive.
6. Loosen set screw.
7. Remove the outer wire guide, and push the gun
bushing out of the wire drive. Because of the pre-
cision fit, light tapping may be required to remove
the gun bushing.
8. Disconnect the shielding gas hose from the gun
bushing.
9. Connect the shielding gas hose to the new gun
bushing.
10. Rotate the gun bushing until the thumb screw hole
aligns with the thumb screw hole in the feed plate.
Slide the gun bushing into the wire drive and verify
the thumb screw holes are aligned.
11. Tighten set screw 35 to 45 in-lbs. (3.95 to
5.08Nm).
12. Connect welding buss bar to gun bushing assem-
bly and tighten bolts to 33 to 44 Ft. Lbs. (44.8 to
59.7Nm).
13. Insert the welding gun into the gun bushing and
tighten the thumb screw.
GUN BUSHING
ASSEMBLY
LOOSEN TIGHTEN
THUMB SCREW
OUTER WIRE GUIDE
SET SCREW
WELDING BUSS
BAR
FIGURE A.2a