4-15. Installing Welding Wire And Adjusting Pressure Drive Setting
Thread wire.
Install wire spool. Ad- just tension nut so wire is taut when wire feed stops.
Adjust tension.
Pressure door assembly not shown.
Drive Rolls 
End Of Liner 
2
1 
Back Of Gun 
NONCONDUCTIVE
SURFACE
No Wire Slip
1Drive Roll Pressure Adjustment Lever
2Notch In Lever (Indicates Pressure Settings)
Pressure drive settings range from 1 to 8 with 8 being the maximum setting.
.When using cored welding wire use knurled drive rolls.
.For aluminum (soft) wire set pressure drive setting at 4 or below.
NONCONDUCTIVE
SURFACE
Wire Slips
.Be sure that gun has proper size liner for the welding wire size.
When installing gun, the liner should extend into the PD continuous guide (or exit guide if used) as far as possible without interfering with the guide.
Install gun. Lay gun cable out straight. Cut off end of wire. Push wire through guide up to drive rolls; continue to hold wire. Press Jog button to feed wire out gun.
Ref. 804
Tools Needed:
15/16 in
To adjust drive roll pressure, hold nozzle about 2 in (51 mm) from nonconductive surface and press gun trigger to feed wire against surface. Adjust pressure drive lever so wire does not slip. Do not overtighten. If contact tip is completely blocked, wire should slip at the feeder (see pressure adjustment above.)
Cut wire off.