OM-243 347 Page 19
5-7. Installing And Threading Welding Wire
Ref. 156 929-A / Ref. 150 922 / Ref. 156 930 / S-0627-A
Tools Needed:
. For best wire feeding performance, be
sure that the outlet cable has the proper
size liner for the welding wire size being
used. Also, when the gun is installed, the
liner extending from the back of the gun
should be as close to the drive rolls as
possible, without touching.
Install gun. Lay gun cable out straight. Cut off
end of wire. Push wire through guides up to
drive rolls; continue to hold wire. Press Jog
button to feed wire out gun.
. When using push-pull guns and pressure
blocking clips, do not adjust pressure.
For aluminum wire, set pressure indicat-
or scale as light as possible.
. To adjust drive roll pressure, hold nozzle
about 2 in. (51 mm) from nonconductive
surface and press gun trigger to feed wire
against surface. Tighten knob so wire
does not slip. Do not overtighten. If con-
tact tip is completely blocked, wire should
slip at the feeder (see pressure adjust-
ment above).Cut wire off. Close cover.
NONCONDUCTIVE
SURFACE
NONCONDUCTIVE
SURFACE
No Wire Slip
Wire Slips
Install wire spool. Adjust tension nut so
wire is taut when wire feed stops.
Install wire guides and
anti-wear guide.
Install drive rolls.
3/16, 5/64 in.
15/16, 3/8 in.
Pressure
Adjust
Front
Rolls
Pressure
Adjust
Rear
Rolls
Drive Rolls
End Of Liner
Back Of Gun
Pressure
Scale
Pressure
Indicator
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