Lincoln Electric SVM189-B service manual Wire Diameter Drive Roll Drive Roll Part Inner Wire Guide

B-5 OPERATION B-5

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See Figure B.5a

11a. WIRE DRIVE & COMPONENTS (MOLDED DRIVE HOUSING) – Feeds wire from the wire spool through the drive and through the welding gun to the weld.

a. Drive Roll – Drives the wire through the drive system. The drive roll has a groove to match the specific wire type and diameter. Refer to Table B.1 for available drive rolls.

b. Liner & Outgoing Guide – The liner guides the wire between the bearing on the Pivot Arm Assembly and Drive Roll and through the outgo- ing guide.

c. Drive Roll Tension Thumbscrew – Turning clockwise increases the force on the drive roll and turning counterclockwise decreases the force.

FIGURE B.5a

PIVOT ARM ASSEMBLY

BEARING OUTGOING GUIDE

TENSION ARM ASSEMBLY

WIRE SPOOL

.035" (0.9mm)

LINERNR-211-MP

DRIVE ROLL

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TABLE B.1

DRIVE ROLL AND WIRE GUIDES

Wire Diameter &	Drive Roll	Drive Roll Part	Inner Wire Guide	Inner Wire Guide
Type		Number		Part Number
.025”(0.6mm) MIG wire	.025”/.030” (0.6mm/0.8mm)
	Smooth Drive Roll	KP2529-1
.030”(0.8mm) MIG wire
			.025”-.035”
.035”(0.9mm) MIG wire	.035”(0.9mm) Smooth Drive Roll	KP2529-2		KP2531-1
			(0.6mm-0.9mm)
			Steel Wire Guide
.030”(0.8mm) flux-cored	.030”/.045” (0.8mm/1.1mm)
	Knurled Drive Roll	KP2529-3
.035”(0.9mm) flux-cored
.045”(1.1mm) flux-cored	.030”/.045” (0.8mm/1.1mm)	KP2529-3	.045”(1.1mm) Steel	KP2531-2
			Wire Guide
	Knurled Drive Roll
See Figure B.6			FIGURE B.6
12. CIRCUIT BREAKER – If the rated input current of		12	13
the machine is exceeded this circuit breaker will
trip. Press to reset.

13.GAS INLET – Shielding gas connects to this inlet.

NOTE: Only on 125 amp machines that have added the MIG Conversion Kit (K2525-1)

COMPACT WIRE WELDERS