Linkoln Electric Magnum PRO 100SG Manuel De L'opérateur page 19

MAGNUM PRO 100SG
WElDINg CaBlE aSSEMBlY REPlaCEMENT
Generally, there are no serviceable or maintainable parts, except
for both o-rings on the machine's power and gas connector; these
seals may be replaced. However, there are options:
• Damage to the four #22 AWG control leads at the gun cable's
welding machine end (P6 plug) may be repairable without
removing or replacing the entire gun cable. The leads can be
spliced and soldered back together, and then reinsulated with
heat-shrink tubing. See Table D.1 in Maintenance Section for
a description of the connections.
• Otherwise, the damaged gun cable may be replaced.
1. Remove liner assembly. (See Maintenance Section)
2. Remove gun tube assembly. (See Maintenance Section)
3. Remove wire drive assembly. (See Maintenance Section)
4. Disconnect trigger. Use adjustable pliers to remove cable strain
FIGURE D.13
relief from right handle half. (See figure D.13)
5. Pull damaged cable out of the right handle half. The cable
connector will fit through the strain relief opening. Mark the
new cable at a point 4.750 to 4.813 inches from the end of
FIGURE D.14
the cable connector. (See figure D.14)
6. Place the strain relief onto the new cable at the mark as shown
FIGURE D.15
in figure D.15.
7. Install the new gun cable. Pass the cable connector through
the opening in the right handle, seat the strain relief in place,
and then check to insure the cable is not kinked between
strain relief and connector. Reassemble gun by reversing steps
2 through 5.
CORRECTINg WIRE ShavINg ISSUES
If the inlet of the liner assembly is shaving the aluminum wire (the
wire is usually peeled off in curled chips) during feeding, the wire
feed centerlines of the wire drive and the liner itself may be
misaligned.
• This misalignment may occur whenever the gun tube, wire
drive, or welding cable assemblies are replaced.
• A limited amount of adjustment is available at the gun tube
mounting to possibly eliminate the shaving problem.
1. Visually check if wire is centered in the liner's inlet opening.
Feed wire through the spool gun and note which side the
shaving seems to occur.
2. Remove left side of handle. See Figure D.10 Gun Tube
Replacement. Slightly loosen gun tube's nut as shown.
3. Slide the gun tube in the mounting plate's hole to realign the
wire and then retighten the nut as shown. Reassemble the gun.
4. Repeat steps 2 thru 4 until shaving is eliminated. A light
accumulation of fine dust is also permissible after feeding 1/4
of a spool during welding use.
D-5
MAINTENANCE