Snap-On MM250SL Service Manual
MM250SL
SERVICE MANUAL
SERIAL NUMBERS MM250SL-2000 AND LATER
FORM WC5276
FOR
9/94 (Rev. 2/95, 1/96, 7/97, 9/97, 1/00)
CONTENTS
VIEW
FIGURE 1 ................. SCHEMATIC DIAGRAM ............................................................3
FIGURE 1A ............... SCHEMATIC, WIRE FEED CIRCUIT BOARD ..........................4
FIGURE 1B ............... SCHEMATIC, SPOT TIME CIRCUIT BOARD ...........................4
FIGURE 2 ................. WIRING DIAGRAM, CONTROL CABLE ASSEMBLY ...............5
FIGURE A................. FRONT ASSEMBLY ..................................................................6
.................................. PARTS LIST .............................................................................. 7
FIGURE B................. LEFT SIDE VIEW & INTERNAL COMPONENTS ...................... 8
.................................. PARTS LIST .............................................................................. 9
FIGURE B1 ............... PRINTED CIRCUIT BOARD (SN-774U) ..................................10
.................................. PARTS LIST ............................................................................. 11
FIGURE C ................ FRONT VIEW-REMOTE FEED UNIT ...................................... 12
DESCRIPTION
PAGE
.................................. PARTS LIST ............................................................................. 13
FIGURE D ................ RIGHT SIDE VIEW & INTERNAL COMPONENTS ..................14
.................................. REMOTE FEED UNIT
.................................. PARTS LIST ............................................................................. 15
FIGURE D1 .............. PRINTED CIRCUIT BOARD (SN-529U) ..................................16
.................................. PARTS LIST ............................................................................. 17
FIGURE D2 .............. WIRE DRIVE ASSEMBLY (SN-138C24M) ...............................18
.................................. PARTS LIST ............................................................................. 19
FIGURE E ................. FEEDER CABLE ASSEMBLY (FCA-15) ................................... 20
.................................. PARTS LIST ............................................................................. 20
2 Snap-on Tools Corporation Kenosha, WI 53141-1410
Snap-on Tools Corporation Kenosha, WI 53141-1410 3
FIGURE 1 - SCHEMATIC DIAGRAM
1
4
-
2
SR1
+
R3
PC1
R11
D7
C2
D5
R5
Q2
Q1
C3
R4
FIGURE 1A - SCHEMATIC, WIRE FEED CIRCUIT BOARD
3
5
6
R6
C4
79142
D8
C5
R7
C6
Q3
R8
R10
D9
CR2
D10
-
8
SR2
+
PC2
FIGURE 1B - SCHEMATIC, SPOT TIME CIRCUIT BOARD
3
5
6
4 Snap-on Tools Corporation Kenosha, WI 53141-1410
A YELLOW A
B ORANGE B
C BLUE C
D BROWN D
E RED E
F BLACK F
G WHITE G
H PURPLE H
K GREEN K
RC2 RC3
FIGURE 2 - WIRING DIAGRAM, CONTROL CABLE ASSEMBLY
Snap-on Tools Corporation Kenosha, WI 53141-1410 5
1
9
10
2
3
4
5
6
7
8
11
12
13
14
15
16
17
18
19
20
6 Snap-on Tools Corporation Kenosha, WI 53141-1410
2122232425
FIGURE A - FRONT ASSEMBLY
FIGURE A
ITEM
NO.
1 SN-180A HANDLE .............................................................................................................................................. 1
2 SN-330A KNOB, HEAT ....................................................................................................................................... 1
3 SN-319 CABLE HANGER ................................................................................................................................ 2
4 V SN-115 VOLTMETER (ROUND CORNERS) ................................................................................................... 1
5 SN-306M LEFT SIDE .......................................................................................................................................... 1
6 SN-1102 LABEL, ON/OFF .................................................................................................................................. 1
7 CB1 SN-482 CIRCUIT BREAKER, 35 AMP ............................................................................................................. 1
8 L SN-184 INDICATOR LAMP .............................................................................................................................. 1
9 SN-5070 COVER, TOP ...................................................................................................................................... 1
10 SN-1058 LABEL, CONTROL .............................................................................................................................. 1
11 SN-5050 BAFFLE ............................................................................................................................................... 1
12 SN-5080 FRONT ................................................................................................................................................ 1
13 SN-211 BRACKET, CYLINDER ....................................................................................................................... 1
14 SN-699H CLIP, HAIRPIN (SERIAL# MM250SL-2572 AND LATER) ................................................................... 1
15 SN-699A STOP W/ CLIP HOLE, FEEDER (REPLACES ORIGINAL) ................................................................ 1
16 CB2 SN-519 MINI BREAKER, 5A ............................................................................................................................. 1
17 RC1 SN-6191A RECEPTACLE, CONTROL (OUTPUT) .............................................................................................. 1
18 SN-146C WELD CONNECTOR W/GAS HOLE ................................................................................................. 2
19 SN-304M SIDE, RIGHT ....................................................................................................................................... 1
20 SN-1103 LABEL, WELD CONNECTOR ............................................................................................................ 1
21 SN-302W BASE ................................................................................................................................................... 1
22 SN-213 CASTER BRACKET ............................................................................................................................ 2
23 SN-121-3 CASTER, FRONT 3" ........................................................................................................................... 2
24 SN-124-8 REAR WHEEL, 8" ............................................................................................................................... 2
25 SN-171 AXLE .................................................................................................................................................... 1
DIA.
MKGS.
PART
NO.
SN-115A VOLTMETER (SQUARE CORNERS) (SERIAL# MM250SL-6020 AND LATER) ............................... 1
SN-115L LENS, VOLTMETER (ROUND CORNERS) ....................................................................................... 1
SN-115AL LENS, VOLTMETER (SQUARE CORNERS) ..................................................................................... 1
SN-955 BREAKER BRACKET ......................................................................................................................... 1
SN-5070A COVER, TOP (SERIAL# MM250SL-5475 AND LATER) ..................................................................... 1
SN-5080A FRONT (SERIAL# MM250SL-5475 AND LATER) ............................................................................... 1
SN-72 NUT, WELD CONNECTOR ................................................................................................................ 2
SN-178 GROUND CABLE ASSEMBLY, 15' (NOT SHOWN) ........................................................................... 1
SN-165 CLAMP, GROUND (NOT SHOWN) .................................................................................................... 1
SN-1009 LABEL, PRO'S ADVANTAGE ............................................................................................................. 1
SN-171C AXLE CAPS ......................................................................................................................................... 2
SN-217W WASHERS, AXLE ............................................................................................................................... 4
QTY.DESCRIPTION
Snap-on Tools Corporation Kenosha, WI 53141-1410 7
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