6N1678 ELECTRIC STARTING MOTOR GROUP SERIAL NO. 4Z1 TO 4Z201 INCLUSIVE 8N2447 MOTOR PARTS ARE SHOWN ON PAGES 58 AND 59 943

ELECTRICAL AND STARTING SYSTEM

STARTING MOTOR GP

0. 6N-1678 STARTING M

BATTERY GP

1. 7P-5818 BATTERY GP

STARTING MOTOR GP

2. 6N-1678 STARTING M
3. 8N-2447 STARTING M
4. 8N-2447 STARTING M
5. 3T-2764 STARTING M
6. 3T-2756 STARTING M
7. 3T-2756 STARTING M
8. 3T-2756 STARTING M
9. 3T-2371 STARTING M
0. INFORMATION

TRACK LOADER 943 TRACK LOADER 04Z
943 LGP TRACK LOADER / HIGH DRIVE / 04Z00001-00306 (MACHINE) POWERED BY 3304 ENGINE SEBP1262 943 04Z (1980)

ELECTRICAL AND STARTING SYSTEM

STARTING MOTOR GP

6N-1678 STARTING MOTOR GP-ELECTRIC

8N-2447 STARTING MOTOR GP-ELECTRIC

3T-2764 STARTING MOTOR GP-ELECTRIC

3T-2756 STARTING MOTOR GP-ELECTRIC

3T-2371 STARTING MOTOR GP-ELECTRIC

#SEBP12620140

6N-1678: STARTING MOTOR GP-ELECTRIC

STARTING MOTOR GP-ELECTRIC

6N1678 ELECTRIC STARTING MOTOR GROUP
SERIAL NO. 4Z1 TO 4Z201 INCLUSIVE
8N2447 MOTOR PARTS ARE SHOWN ON PAGES 58 AND 59

c231913 SEBP1262

6N1678 STARTING MOTOR GP-ELECTRIC Parts scheme

For full view, you need register

Parts for your 943 TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8N-2447 Y	[1]	MOTOR GROUP
			(Separate Illustration)
2.	7J-8902	[3]	BOLT
	8D-5054	[3]	WASHER
3.	4H-7869	[1]	GASKET
4.	7M-9234 C	[1]	WIRE ASSEM.
			(Includes)
5.	5P-5675 D		WIRE .2m(7.8 in.)
6.	2L-8054	[2]	TERMINAL
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION
	D		ORDER BY THE METER

#SEBP12620141

7P-5818: BATTERY GP

BATTERY GP

7P5818 HEAVY DUTY BATTERY GROUP-TYPE 2
ALSO PART OF 8G3559 LOW TEMPERATURE STARTING ARRANGEMENT LISTED ON PAGE
69B. AN ATTACHMENT

c312276 SEBP1262

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Parts for your 943 TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7P-7615	[4]	ROD
2.	2D-6235	[4]	LOCKNUT
	5P-4115	[4]	WASHER
3.	7P-7613	[2]	ANGLE AS.
4.	9G-4232 C	[2]	BATTERY
	7G-9383	[6]	VENT AS.
	C		INDICATES CHANGE

#SEBP12620142

6N-1678: STARTING MOTOR GP-ELECTRIC

STARTING MOTOR GP-ELECTRIC

6N1678 ELECTRIC STARTING MOTOR GROUP
SERIAL NO. 4Z202-UP
3T2764 MOTOR PARTS ARE LISTED ON PAGE 59A

c180950 SEBP1262

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Parts for your 943 TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	3T-2764 CYR	[1]	STARTING MOTOR GP-ELECTRIC
2.	8S-2332 C	[3]	BOLT-12 POINT HEAD
	8D-5054	[3]	WASHER-HARD
3.	4H-7869	[1]	GASKET
4.	7M-9234 C	[1]	WIRE AS
5.	5P-5675 D		WIRE (6 GA)
			.2M(7.8 IN)
6.	2L-8054	[2]	TERMINAL
	C		CHANGE FROM PREVIOUS TYPE
	D		ORDER BY THE METER
	R		REMFG PART MAY BE AVAILABLE
	Y		SEPARATE ILLUSTRATION

#SEBP12620143

8N-2447: STARTING MOTOR GP-ELECTRIC

STARTING MOTOR GP-ELECTRIC

8N2447 ELECTRIC STARTING MOTOR GROUP-DELCO-REMY-24 VOLT-PART 1
SERIAL NO. 4Z1 TO 4Z201 INCLUSIVE
PART OF 6N1678 ELECTRIC STARTING MOTOR GROUP SHOWN ON PAGE 57

c225904 SEBP1262

8N2447 STARTING MOTOR GP-ELECTRIC Parts scheme

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Parts for your 943 TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7F-4556	[9]	BOLT
	1L-4789	[9]	LOCKWASHER
2.	4M-0189	[2]	SEAL
3.	2L-8166	[1]	WASHER
4.	7N-1284	[1]	FRAME ASSEM.
5.	7N-1282	[1]	BRUSH PLATE
	6F-5829	[1]	SCREW ASSEM.
6.	4M-1845	[4]	BRUSH
	7N-1281	[4]	SPRING
	2F-2860	[4]	SCREW
7.	7N-9236	[1]	SWITCH ASSEM. (solenoid)
8.	6H-3622	[4]	SCREW ASSEM.
9.	4M-1850	[1]	HOUSING ASSEM.
			(Includes)
	2B-4602	[1]	PLUG
	9F-2547	[1]	WICK
10.	1M-9968	[1]	BUSHING
11.	2F-6678	[1]	SEAL
12.	1H-2629	[2]	STRIP
13.	7N-1280	[1]	INSULATOR
14.	2P-4708	[1]	DRIVE ASSEM. (1894213)
			(Includes)
15.	9S-9771	[1]	PINION
			- OR -
16.	6N-3827 A	[1]	DRIVE ASSEM. (480118)
17.	4M-1851	[1]	GASKET
18.	1M-9971	[1]	SPACER
19.	8H-1141	[4]	SHOE
20.	3R-8797	[8]	SCREW ASSEM.
21.	7N-1283	[1]	COIL ASSEM.
22.	4M-1833	[5]	SCREW 3.81 cm(1.5 in.)long
	7M-0336	[1]	SCREW 2.18 cm(.86 in.)long
23.	7M-8652	[1]	HOUSING ASSEM.
			(Includes)
24.	4M-1896	[1]	BUSHING
25.	9F-2247	[1]	PLUG
	9F-2547	[1]	WICK
			THE FOLLOWING REPAIR KITS ARE AVAILABLE FOR 2P4708 DRIVE ASSEM.:
	7N-6098	[1]	KIT (cup)
	4S-9459	[1]	KIT (washer)
	A		NOT PART OF THIS GROUP

#SEBP12620144

8N-2447: STARTING MOTOR GP-ELECTRIC

STARTING MOTOR GP-ELECTRIC

8N2447 ELECTRIC STARTING MOTOR GROUP-DELCO-REMY-24 VOLT-PART 2
SERIAL NO. 4Z1 TO 4Z201 INCLUSIVE
PART OF 6N1678 ELECTRIC STARTING MOTOR GROUP SHOWN ON PAGE 57

c225905 SEBP1262

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Parts for your 943 TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	3L-3380	[1]	BUSHING
2.	069-0811	[1]	STUD
3.	3H-3680	[1]	NUT
4.	7N-1279	[1]	STUD ADAPTER
5.	3H-3681	[2]	NUT
6.	9H-3757	[1]	WASHER (large)
	7F-3494	[1]	WASHER (small)
7.	9F-4976	[2]	LOCKWASHER
8.	4M-1841	[1]	CONNECTOR
9.	5L-8877	[1]	ARMATURE ASSEM.
10.	7L-2894	[1]	GASKET
11.	4M-1831	[3]	PLUG
12.	069-0797	[1]	LEVER ASSEM.
13.	4M-1854	[1]	SHAFT
14.	1H-1023	[1]	SEAL 9.37 mm(.369 in.)diameter
	2D-6392	[1]	SEAL 6.07 mm(.239 in.)diameter
15.	4L-2729	[1]	WASHER
16.	1P-3879	[1]	LEAD ASSEM.

#SEBP12620145

3T-2764: STARTING MOTOR GP-ELECTRIC

STARTING MOTOR GP-ELECTRIC

3T2764 ELECTRIC STARTING MOTOR GROUP*R
SERIAL NO. 4Z202-UP
PART OF 6N1678 ELECTRIC STARTING MOTOR GROUP SHOWN ON PAGE 57B

SEBP12620145 SEBP1262

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Parts for your 943 TRACK LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name


3T-2371 Y	[1]	ELECTRIC STARTING MOTOR GROUP

		-OR-

3T-2756 Y	[1]	ELECTRIC STARTING MOTOR GROUP
		(DELCO-REMY)
Y		SEPARATE ILLUSTRATION

#SEBP12620146

3T-2756: STARTING MOTOR GP-ELECTRIC

STARTING MOTOR GP-ELECTRIC

3T2756 ELECTRIC STARTING MOTOR GROUP-24 VOLT-DELCO-REMY-PART 1 OF 3
SERIAL NO. 4Z202-UP
PART OF 3T2764 ELECTRIC STARTING MOTOR GROUP LISTED ON PAGE 59A. 3T4704
SOLENOID PARTS ARE SHOWN ON PAGE 59F

c310438 SEBP1262

3T2756 STARTING MOTOR GP-ELECTRIC Parts scheme

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Parts for your 943 TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	036-9823	[4]	BOLT
2.	3L-3380	[1]	BUSHING
3.	7N-1284	[1]	FRAME AS
4.	1P-3879	[1]	LEAD AS
5.	4M-1831	[2]	PLUG-LEVER HOUSING
	7L-2894	[2]	GASKET
6.	1H-2629	[2]	STRIP-INSULATION
7.	3H-3680	[3]	NUT-JAM
8.	2L-8166	[1]	WASHER
9.	5L-8877	[1]	ARMATURE AS
10.	8H-1141	[4]	SHOE-POLE
11.	7N-1283	[1]	COIL AS-FIELD
12.	9H-3757	[2]	WASHER
13.	4B-4280	[3]	WASHER
14.	4M-1841	[1]	CONNECTOR
15.	4B-2049	[1]	NUT
	4B-4274	[1]	WASHER
16.	3T-4704 Y	[1]	SOLENOID AS
17.	6H-3622	[4]	SCREW-MACHINE
18.	7N-1280	[1]	INSULATOR
19.	3F-0379	[8]	SCREW-POLE SHOE
	Y		SEPARATE ILLUSTRATION

#SEBP12620147

3T-2756: STARTING MOTOR GP-ELECTRIC

STARTING MOTOR GP-ELECTRIC

3T2756 ELECTRIC STARTING MOTOR GROUP-24 VOLT-DELCO-REMY-PART 2 OF 3
SERIAL NO. 4Z202-UP
PART OF 3T2764 ELECTRIC STARTING MOTOR GROUP LISTED ON PAGE 59A

c304002 SEBP1262

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Parts for your 943 TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	3T-3106	[3]	SCREW AS
2.	4M-1845	[4]	BRUSH AS
3.	2F-2860	[4]	SCREW-MACHINE
4.	7N-1282	[1]	PLATE AS-BRUSH
5.	7N-1279	[1]	STUD-TERMINAL
6.	1H-0134	[1]	LOCKWASHER
7.	9B-9144	[1]	WASHER
8.	033-5902	[1]	WASHER
9.	4M-0189	[2]	SEAL-O-RING
10.	3H-3680	[1]	NUT-JAM
11.	4B-4280	[1]	WASHER

#SEBP12620148

3T-2756: STARTING MOTOR GP-ELECTRIC

STARTING MOTOR GP-ELECTRIC

3T2756 ELECTRIC STARTING MOTOR GROUP-24 VOLT-DELCO-REMY-PART 3 OF 3
SERIAL NO. 4Z202-UP
PART OF 3T2764 ELECTRIC STARTING MOTOR GROUP LISTED ON PAGE 59A

c304003 SEBP1262

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Parts for your 943 TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9M-7606	[1]	PLUNGER AS
2.	036-9821	[1]	WASHER
3.	4M-1829	[1]	BOOT-RUBBER
4.	4M-1828	[1]	RETAINER-SPRING
5.	9M-7609	[1]	SPRING
6.	4M-1827	[1]	RETAINER-SPRING
7.	1H-1023	[1]	SEAL-O-RING
8.	3T-5046	[1]	HOUSING AS-LEVER
9.	3T-3424	[1]	PLUG-FELT
10.	3T-3423	[1]	CUP
11.	9G-9817	[1]	BUSHING
12.	2F-6678	[1]	SEAL-LIP TYPE
13.	3T-3433	[1]	PLUG
14.	4L-2729	[1]	WASHER
15.	9M-7611	[2]	RING-RETAINING
16.	4M-1851	[1]	GASKET
17.	4M-1853	[1]	LEVER AS-SHIFT
18.	5M-3034	[1]	LOCKNUT
19.	7L-2894	[1]	GASKET
20.	4M-1831	[1]	PLUG-LEVER HOUSING
21.	3T-5069	[1]	HOUSING AS-DRIVE
22.	4M-1896	[1]	BUSHING
23.	3T-3424	[1]	PLUG-FELT
24.	3T-3423	[1]	CUP
25.	4M-1833	[5]	SCREW 38.1MM(1.5IN)LONG
	7M-0336	[1]	SCREW 22.23MM(.875IN)LONG
26.	1M-9971	[1]	SPACER
27.	6N-3827	[1]	DRIVE AS-MOTOR
28.	4M-1854	[1]	SHAFT-LEVER
29.	2D-6392	[1]	SEAL-O-RING
30.	036-9823	[5]	BOLT

#SEBP12620149

3T-2371: STARTING MOTOR GP-ELECTRIC

STARTING MOTOR GP-ELECTRIC

3T2371 ELECTRIC STARTING MOTOR GROUP
SERIAL NO. 4Z202-UP
PART OF 3T2764 ELECTRIC STARTING MOTOR GROUP LISTED ON PAGE 59A

c352872 SEBP1262

3T2371 STARTING MOTOR GP-ELECTRIC Parts scheme

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Parts for your 943 TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	3T-0866	[1]	HOUSING AS-DRIVE
2.	3T-0852 M	[1]	LOCKNUT
	3T-0861	[1]	SCREW
3.	3T-0863	[1]	LEVER-SHIFT
4.	3T-0864	[1]	HOUSING AS-LEVER
	3T-0842	[1]	BEARING AS
5.	3T-0868	[1]	SOLENOID AS
6.	1D-4719	[2]	NUT
7.	3T-4716 C	[1]	WIRE AS
8.	3T-7020 C	[1]	WASHER
9.	3T-0847	[4]	SCREW
	3T-0851 M	[4]	LOCKNUT
10.	3T-0867	[1]	ARMATURE AS
11.	3T-0865	[1]	COIL AS-FIELD
12.	3T-7021 C	[1]	PLATE-BRAKE
13.	3T-0850 M	[8]	SCREW
14.	3T-0849 M	[12]	BOLT-SOCKET HEAD
15.	3T-0853 M	[2]	NUT
16.	3T-0858	[4]	SPRING-BRUSH
17.	3T-0848 M	[4]	SCREW
18.	3T-0862	[1]	PLATE AS-BRUSH
19.	2H-3880 C	[2]	SCREW-DRIVE
20.	3T-5962 C	[1]	PLATE-IDENTIFICATION
21.	4N-4517 C	[1]	DRIVE AS-MOTOR
22.	3T-7024 CM	[4]	SCREW
23.	3T-7025 C	[1]	COVER-END
24.	4B-2049 C	[1]	NUT
25.	3B-4502 C	[1]	LOCKWASHER
26.	3B-4508 C	[2]	LOCKWASHER
27.	3T-7018 C	[1]	PLUG
28.	4B-4674 C	[4]	WASHER

			THE FOLLOWING REPAIR
			KITS ARE AVAILABLE:
	3T-0844	[1]	KIT-BRUSH (INCLUDES BRUSHES)
	3T-2768	[1]	KIT-SEAL
			(INCLUDES SEALS & RINGS)
	3T-2769	[1]	KIT-HARDWARE
			(INCLUDES WIRE AS,
			NUTS, WASHERS,
			LOCKWASHERS,
			BUSHING & BAR)
	3T-7017	[1]	KIT-BEARING
			(INCLUDES BEARINGS,
			SEAL, & SPACERS)
	7T-2339 C	[1]	KIT-LEVER
			(INCLUDES LEVER,
			SEAL & CLIP)
	C		CHANGE FROM PREVIOUS TYPE
	M		METRIC PART

Information:

ELECTRICAL AND STARTING SYSTEM

STARTING MOTOR GP

General Service Information

Introduction
DELCO REMY CRANKING MOTORS 30-MT, 35-MT, 40-MT, 50-MT SERIES

Delco Remy
DELCO REMY CRANKING MOTORS 30-MT, 35-MT, 40-MT, 50-MT SERIES

Engine News

Caterpillar Remanufactured Electric Starting Motors Are Improved {1453}
2011/05/16

Special Instruction

Installation of Electric Starting Motors{1453}
Installation of Electric Starting Motors{1453}

Caterpillar PRELUB® Diagnostics{1469}
Caterpillar PRELUB^® Diagnostics{1469}

Starting Motor Solenoid - Replace {1467}
Starting Motor Solenoid - Replace {1467}

Installation of New Shift Lever Assembly for All Starter Motors {1453}
Installation of New Shift Lever Assembly for All Starter Motors {1453}

Procedure to Install the Insulator on to Series Starters on All Engines {1453}
Procedure to Install the Insulator on to Series Starters on All Engines {1453}

Installation of Repair Kit-Solenoid Plunger Assembly on All Engines {1453}
Installation of Repair Kit-Solenoid Plunger Assembly on All Engines {1453}

Procedure to Install Terminal Kit on All Engines {1453}
Procedure to Install Terminal Kit on All Engines {1453}

Procedure to Install Brush Holder Assembly in All Engines {1453}
Procedure to Install Brush Holder Assembly in All Engines {1453}

Procedure to Replace Armature of Starter Motor On All Cat® Products {1408, 1450, 1453}
Procedure to Replace Armature of Starter Motor On All Cat^® Products {1408, 1450, 1453}

Procedure to Replace Commutator End (CE) Housing of Starter Motor On All Cat® Products {1408, 1450, 1453}
Procedure to Replace Commutator End (CE) Housing of Starter Motor On All Cat^® Products {1408, 1450, 1453}

Procedure to Replace Drive Assembly of Starter Motor On All Cat® Products {1453}
Procedure to Replace Drive Assembly of Starter Motor On All Cat^® Products {1453}

Specifications

Starter Solenoid 7N9236 24V (Delco-Remy Number 1115548)
943 & 953 TRACK-TYPE LOADERS

Starter Motor 8N2447 24V (Delco-Remy Number 1113487)
943 & 953 TRACK-TYPE LOADERS

Starting Motor
37-MT, 41-MT, and 42-MT Series Starting Motors

Systems Operation

General Information
37-MT, 41-MT, and 42-MT Series Starting Motors

Component Description
37-MT, 41-MT, and 42-MT Series Starting Motors

Normal Operation
37-MT, 41-MT, and 42-MT Series Starting Motors

Testing and Adjusting

No Load - Test
37-MT, 41-MT, and 42-MT Series Starting Motors

Brush and Brush Holder - Check
37-MT, 41-MT, and 42-MT Series Starting Motors

Pinion Clearance - Adjust
37-MT, 41-MT, and 42-MT Series Starting Motors

Starting Motor Solenoid - Test
37-MT, 41-MT, and 42-MT Series Starting Motors

Troubleshooting

Engine Does Not Crank with Starting Motor On and Pinion Engaging Ring Gear
37-MT, 41-MT, and 42-MT Series Starting Motors

Starting Motor Does Not Turn or Turns Slowly
37-MT, 41-MT, and 42-MT Series Starting Motors

General Information
37-MT, 41-MT, and 42-MT Series Starting Motors

Disassembly and Assembly

Starter
943-953 TRACK-TYPE LOADERS VEHICLE SYSTEMS

Starting Motor - Disassemble - 37-MT and 41-MT
37-MT, 41-MT, and 42-MT Series Starting Motors

General Information
37-MT, 41-MT, and 42-MT Series Starting Motors

Starting Motor - Assemble - 37-MT and 41-MT
37-MT, 41-MT, and 42-MT Series Starting Motors

Starting Motor - Disassemble - 42-MT
37-MT, 41-MT, and 42-MT Series Starting Motors

Starting Motor - Assemble - 42-MT
37-MT, 41-MT, and 42-MT Series Starting Motors

Service Magazine

Caterpillar Electric Starting Motors{1453,1407}
1982/03/22

Replacement Of Brush Holder Pins In Delco-Remy Electric Starting Motors{1453}
1982/06/28

New Start Switch Used {1416,1453}
1986/07/07

Adjust Bosch Solenoid If Replaced Or Reinstalled{1407,1453}
1986/11/10

12-Volt Starter Solenoid Available For 7T2265 And 7T2266 Starting Motors{1407}
1987/02/16

Modification To Prevent Starter From Remaining Engaged With Flywheel After Engine Starts{1400,1450}
1987/03/16

Testing The Starter On The Engine{1401,1450}
1987/05/04

Remanufactured Heavy-Duty Starters And High-Amp Alternators{1405,1453}
1987/05/25

Be Sure Battery Cable-To-Starter Connection Has Correct Torque{1453}
1988/03/14

Magnetic Switches (Starter Relays) Improved{1450}
1988/03/14

Two Plug Assemblies (Booster Cables) Are Available To Start Machines{1401,1453}
1979/11/05

Limitations On Engine Cranking Time{1453,1401}
1989/03/27

Causes And Effects Of Low Battery Voltage On Electric Starters{1401,1453,1467}
1989/04/24

Special Instruction, REHS1129, "Starting Motor Solenoid - Replace" Is Available {1467}
2001/08/13

Improved Remanufactured Heavy-Duty Electrical Starting Motors Are Available {1453}
2001/10/29

Field Replacement of Remanufactured Starting Motors and Remanufactured Alternators {1405, 1453}
2001/11/19

New Starting Motors Used {1453}
2002/05/13

Examine Failed Starting Motors to Understand the Reason for Failure {1453}
2002/10/28

Caterpillar Parts SIS Catalog 943 :

7P-5818 BATTERY GP

7N-0718 SWITCH AS-DISCONNECT

9G-1480 SWITCH GP-HEAT START

6N-1678 STARTING MOTOR GP-ELECTRIC

8N-2447 STARTING MOTOR GP-ELECTRIC

3T-2764 STARTING MOTOR GP-ELECTRIC

3T-2756 STARTING MOTOR GP-ELECTRIC

Truck sale:

Caterpillar 943, kettenlader, Bau-Und Bergbauausrüstung
- track loaders
CGT - COMPAGNIA GENERALE TRATTORI

17,730

Caterpillar 943, Construction
- track loaders
ZEPPELIN BAUMASCHINEN
Germany

17.823

Caterpillar 943, kettenlader, Bau-Und Bergbauausrüstung
- track loaders

18,302

Caterpillar 943, Construction
- track loaders

1,991

Caterpillar TH943D, Construction
- forks
FINNING CANADA – USED ATTACHMENTS
Canada