Lincoln Electric IM774 manual Drive Roll and Idler Rolls, Drive Roll Installation/Removal

Drive Roll and Idler Rolls

General

The CobraMAX™ gun comes standard with a knurled drive roll and a grooved idler roll, which will handle both steel and aluminum wire with diameters from

.030-1/16 inch. Optional insulated V-groove drive rolls are also available for aluminum wire if desired (see optional kits).

Drive roll tension is accomplished with a unique spring-loaded pressure screw. The CobraMAX™ comes from the factory with the pressure adjustment screw preset. NO ADJUSTMENT is required for all sizes and types of wires.

Drive Roll Installation/Removal

Note:

Neither of the handles needs to be removed to access the

drive or idler rolls

1.Pull the cam lever away from the idler roll. This will relieve the pressure against the drive roll (as shown in Figure 1).

2.Align the drive roll removal tool (P/N 931-0100) over the flats of the drive roll (as shown in Figure 2). Hold the gun with one hand or on a table top, with the other hand give the removal tool a quick snap-turn in the

CLOCKWISE DIRECTION.

3.Once the drive roll is loose, continue to spin drive roll in the clockwise direction to remove the drive roll from the gun.

4.Install a new drive roll on the left-hand threaded shaft. The drive roll will self-tighten when it is feeding wire.

Cam Lever

Figure 1

Idler Roll Installation and Removal

(Reference Figure 3)

Figure 2

1.Using a slot type screwdriver, loosen idler screw, taking care not to lose lock washer under idler roll.

2.Insert new idler roll and lock washer onto screw, insuring that idler groove is toward top and lock washer is beneath.

Figure 3

3.Tighten.

NOTE: Lock washer must be under idler roll or it will not turn freely.

CobraMAX™ Owner's Manual - Page