D-5
2. Remove liner assembly. (See Maintenance Section)
3. Remove gun tube assembly. (See Maintenance
Section)
4. Remove wire drive assembly. (See Maintenance
Section)
5. Disconnect trigger. Use adjustable pliers to remove
cable strain relief from right handle half. (See figure
D.13)
FIGURE D.13
6. 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 the cable connector.
(See figure D.14)
FIGURE D.14
Consumable
parts
Periodic
replacement
parts
MAINTENANCE
TABLE D.2
Contact tip, 0.030 wire (S19726-2)
Contact tip, 0.035 wire (S19726-3)
Gas diffuser (S19728)
Gas cone assembly (M16294)
Gun tube assembly (S19703-1)
Drive roll assembly (S26236-2)
Liner assembly (S26612)
MAGNUM 100SG SPOOL GUN
7. Place the strain relief onto the new cable at the
mark as shown in figure D.15.
FIGURE D.15
Mark for strain relief
8. 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 connec-
tor. Reassemble gun by reversing steps 2 through 5.
CORRECTING WIRE SHAVING ISSUES
1. If the inlet of the liner assembly is shaving the alu-
minum 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 prob-
lem.
2. 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.
3. Remove left side of handle. See Figure D.10 Gun Tube
Replacement. Slightly loosen gun tube's nut as
shown.
4. Slide the gun tube in the mounting plate's hole to
realign the wire and then retighten the nut as shown.
Reassemble the gun.
5. 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.
KP2039-2B1
KP2039-3B1
KP2040-1
KP1938-1
KP2631-1
KP2529-2
KP2632-1
D-5
10-pack
10-pack
1-piece
1-piece
1-piece
1-piece
1-piece