MK Products Python LX Torch - Manual (Page 10)

Python ® LX Owner's Manual - Page 3
Drive Roll and Idler Rolls
General
The Python LX gun comes standard with a knurled drive roll and a grooved
idler roll, which will handle both hard wire and aluminum wire with diameters
from .030 to 1/16 inch and steel from .030 to .045 inches. 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 Python LX 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.
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
Optional Kits
Insulated Drive Roll Kits are used to prevent preheating of the aluminum 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.
Cam Lever
Figure 1
Figure 2
Figure 3