Lincoln Electric SP-100 service manual Changing the Contact TIP, Changing Drive Roll

to Section TOC

to Master TOC

MAINTENANCE		D-2
• Replace Liner – when wire feeding prob-	FIGURE D.1
lems occur and other items have been
checked (refer to Changing Liner, in this
section).

Return

Return to Section TOC

Return

Return to Master TOC

COMPONENT REPLACE- MENT PROCEDURES

CHANGING THE CONTACT TIP

1.Refer to Figure D.2. Remove the gas nozzle from the gun by unscrewing counter-clockwise.

2.Remove the existing contact tip from the gun by unscrewing counter-clockwise.

3.Insert and hand tighten desired contact tip.

4.Replace gas nozzle.

3

	2
1	Wire size is stenciled
	on the ends of the

drive roll.

1.Make certain the SP-100 power switch is off “O”.

2.Open the Spring Loaded Pressure Arm (2); Lift up the Idle Roll Arm (3).

to Section TOC

to Master TOC

CHANGING DRIVE ROLL

The SP-100 Wire Feed Drive Roll (1 ) has two grooves; one for 0.023” – 0.025” (0,6

mm)solid steel electrode and the other for 0.030” (0,8 mm) solid and 0.035” (O,9 mm) flux-cored steel electrode. See Figure D.1. As shipped, the drive roll is installed in the 0.023” – 0.025” (0,6 mm) position (as indi- cated by the stenciling on the exposed side of the drive roll). If 0.030” (0,8 mm) or 0.035” (0,9 mm) wire is to be used, the drive roll must be reversed as follows:

3.Remove the drive roll retaining screw and washer.

4.Remove the drive roll, flip over and install with the 0.030/0.035” (0.8/0.9 mm) stencil visible (away from gearbox). Make cer- tain the small key is in place in the key- way.

5.Replace the washer and retaining screw.

Return

Return

FIGURE D.2

Liner trim length for the Magnum 100L gun (red trigger)

Return to Section TOC

Return to Master TOC

Set Screw	Brass Cable
	Connector

Liner Assembly

(Liner bushing to be sealed tight against brass cable connector)

1-1/4 (31.8 mm) Liner Trim Length

Gas Diffuser

Gas Nozzle or

Gasless Nozzle

SP-100