Drive Roll And Idler Rolls - Lincoln Electric COBRAMAX IM774 Operator's Manual

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
™
adjustment screw preset.
ALL SIzES AND TYPES OF WIRES
Drive Roll Installation/Removal
Neither of the handles needs to be removed to access the
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)
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.
3. Tighten.
NOTE: Lock washer must be under idler roll or it will not turn freely.
CobraMAX™ Owner's Manual - Page 3
comes from the factory with the pressure
NO ADJUSTMENT IS REQUIRED FOR
.
Note:
drive or idler rolls
Figure 3
Figure 2