Wire Drive Configuration; Procedure To Install Drive Rolls And Wire Guides - Lincoln Electric POWER FEED 25M Service Manual

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WIRE DRIVE CONFIGURATION

(See Figure A-6)
Changing the Gun Receiver Bushing
WARNING
ELECTRIC SHOCK can kill.
• Turn the input power OFF at the
welding power source before instal-
lation 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.
------------------------------------------------------------------------
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.
6. Remove the outer wire guide, and push the gun
bushing out of the wire drive. Because of the preci-
sion fit, light tapping may be required to remove the
gun bushing.
7. Disconnect the shielding gas hose from the gun
bushing, if required.
FIGURE A-6
THUMB SCREW
GUN RECEIVER BUSHING
CONNECTOR BLOCK
SOCKET HEAD
CAP SCREW
All manuals and user guides at all-guides.com
INSTALLATION
OUTER WIRE GUIDE
LOOSEN TIGHTEN
POWER FEED® 25M
8. Connect the shielding gas hose to the new gun
bushing, if required.
9. Rotate the gun bushing until the thumb screw hole
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.
10. Tighten the socket head cap screw.
11. Insert the welding gun into the gun bushing and
tighten the thumb screw.
PROCEDURE TO INSTALL DRIVE ROLLS
AND WIRE GUIDES
WARNING
• Turn the input power OFF at the weld-
ing 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.
------------------------------------------------------------------------
1. Turn power off at the welding power source.
2. Release the idle roll pressure arm.
3. Remove the outer wire guide by turning the knurled
thumbscrews counter-clockwise to unscrew them
from the feed plate.
4. Rotate the triangular lock and remove the drive rolls.
5. Remove the inner wire guide.
6. Insert the new inner wire guide, groove side out,
over the two locating pins in the feed plate.
7. Install a drive roll on each hub assembly secure with
the triangular lock.
8. Install the outer wire guide by aligning it with the pins
and tightening the knurled thumbscrews.
9. Close the idle arm and engage the idle roll pressure
arm. Adjust the pressure appropriately
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