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B-6
WIRE DRIVE CONFIGURATION
(See Figure B.2b)
Changing the Gun Receiver Bushing
ELECTRIC SHOCK can kill.
• Turn the input power OFF at the
welding power source before
installation or changing drive rolls
and/or guides.
• Do not touch electrically live parts.
• When inching with the gun trigger, electrode and
drive mechanism are "hot" to work and ground
and could remain energized several seconds
after the gun trigger is released.
• Only qualified personnel should perform mainte-
nance work.
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Tools required:
• 1/4" hex key wrench.
Note: Some gun bushings do not require the use of
the thumb screw.
1. Turn power off at the welding power source.
2. Remove the welding wire from the wire drive.
3. Remove the thumb screw from the wire drive.
4. Remove the welding gun from the wire drive.
5. Loosen the socket head cap screw that holds the
connector bar against the gun bushing.
Important: Do not attempt to completely remove
the socket head cap screw.
GUN RECEIVER BUSHING
CONNECTOR BLOCK
OPERATION
6. Remove the outer wire guide, and push the gun
7. Disconnect the shielding gas hose from the gun
8. Connect the shielding gas hose to the new gun
9. Rotate the gun bushing until the thumb screw hole
10. Tighten the socket head cap screw.
11. Insert the welding gun into the gun bushing and
COLD FEED/GAS PURGE SWITCH
Cold Feed and Gas Purge are combined into a single
spring centered toggle switch.
To activate Cold Feeding, hold the switch
in the UP position. The wire drive will feed
electrode but neither the power source
nor the gas solenoid will be energized.
Adjust the speed of cold feeding by rotat-
ing the WFS knob. Cold feeding, or "cold
inching" the electrode is useful for thread-
ing the electrode through the gun.
FIGURE B.2b
THUMB SCREW
SOCKET HEAD
CAP SCREW
LOOSEN
LN-15 CONTROL CABLE MODEL (CE)
bushing out of the wire drive. Because of the pre-
cision fit, light tapping may be required to remove
the gun bushing.
bushing, if required.
bushing, if required.
aligns with the thumb screw hole in the feed plate.
Slide the gun receiver bushing into the wire drive
and verify the thumb screw holes are aligned.
tighten the thumb screw.
OUTER WIRE GUIDE
TIGHTEN
B-6
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