MK Products CobraMAX - Manual (Page 11)

CobraMAX™ Owner's Manual - Page 3
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.
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.
Section C
Accessories
A gas flow control mechanism (i.e. solenoid or valve) is required so the
CobraMAX
™ can be used on Cobra ® wire feeders. The following kits are
available depending on the wire feeder used. The factory set times (in
seconds) for normal and latched trigger functions is 0.25 pre-purge and 1.0
post-purge.
Optional Kits
Insulated Drive Roll Kits are used to prevent preheating of the wire which
may soften it and clog the liner. This picking up of current at the drive rolls
rather than at the contact tip is usually not a problem unless using too large
of a contact tip or excessively oxidized aluminum wire.
Insulated Groove Drive Roll Kit
......................................................005-0640
For
.030" (0.8mm) dia. aluminum wire. Includes insulated groove drive roll
Figure 1 Figure 2
Cam Lever
Figure 3