Miller Electric D-74DX manual Installing And Threading Welding Wire

5-7. Installing And Threading Welding Wire

Install wire spool. Adjust tension nut so	Install wire guides and
wire is taut when wire feed stops.	anti-wear guide.

Install drive rolls.

	Pressure
Pressure	Indicator
	Scale
Adjust
Rear	Pressure
Rolls
	Adjust
	Front
	Rolls

No Wire Slip	Wire Slips
NONCONDUCTIVE	NONCONDUCTIVE
SURFACE	SURFACE

Drive Rolls		Tools Needed:
	Back Of Gun	3/16, 5/64 in
		15/16, 3/8 in

End Of Liner

. For best wire feeding performance, be	. For soft wire or small diameter stainless	. To adjust drive roll pressure, hold nozzle
sure that the outlet cable has the proper	steel wire, reduce drive roll pressure on	about 2 in (51 mm) from nonconductive
size liner for the welding wire size being	the rear roll to half that of the front rolls.	surface and press gun trigger to feed wire
used. Also, when the gun is installed, the		against surface. Tighten knob so wire
liner extending from the back of the gun		does not slip. Do not overtighten. If con-
should be as close to the drive rolls as		tact tip is completely blocked, wire should
possible, without touching.		slip at the feeder (see pressure adjust-
Install gun. Lay gun cable out straight. Cut off		ment above).Cut wire off. Close cover.
end of wire. Push wire through guides up to
drive rolls; continue to hold wire. Press Jog
button to feed wire out gun.		Ref. 156 929-A / Ref. 150 922 / Ref. 156 930 / S-0627-A

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