9G5584 ELECTRIC STARTING MOTOR GROUP--24 Volt--Prestolite--Part 2 of 2--Type 1 Serial No. 45P1512 to 45P1514 and 45P1516-Up Part of 6N1889 Electric Starting Motor Group listed on Page 26C-2 621B

ELECTRICAL AND STARTING SYSTEM

STARTING MOTOR GP

0. 9G-5584 STARTING M
1. 9G-5584 STARTING M
2. 9G-5584 STARTING M
3. 4N-0957 STARTING M
4. 4N-0957 STARTING M
5. 4N-0957 STARTING M
6. 9G-5585 STARTING M
7. 9G-5585 STARTING M
8. 9G-5585 STARTING M

ALTERNATOR GP-CHARGING

9. 5S-9088 ALTERNATOR
0. INFORMATION

WHEEL TRACTOR 621B WHEEL TRACTOR 45P
621B TRACTOR 45P00001-02711 (MACHINE) UEG0807S 621B 45P (1973)

ELECTRICAL AND STARTING SYSTEM

STARTING MOTOR GP

6N-1888 STARTING MOTOR GP-ELECTRIC

9G-5584 STARTING MOTOR GP-ELECTRIC

4N-0957 STARTING MOTOR GP-ELECTRIC

#UEG0807S0060

9G-5584: STARTING MOTOR GP-ELECTRIC

STARTING MOTOR GP-ELECTRIC

9G5584 ELECTRIC STARTING MOTOR GROUP--24 Volt--Prestolite--Part 2 of 2--Type 1
Serial No. 45P1512 to 45P1514 and 45P1516-Up
Part of 6N1889 Electric Starting Motor Group listed on Page 26C-2

c228140 UEG0807S

9G5584 STARTING MOTOR GP-ELECTRIC Parts scheme

For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	2P-8822	[1]	PLATE ASSEM.
2.	4N-9401	[1]	KIT (Includes 6 Brushes)
	2P-8868	[1]	KIT (Includes 8 Springs)
3.	2P-8825	[1]	SHIFT YOKE ASSEM.
4.	2P-8817	[1]	KIT (Yoke Adjusting)
			(Includes Plugs, Pin, Gasket And Nut)
5.	8S-1535	[1]	KIT (Includes 6 Plugs)
6.	4N-9402	[1]	KIT (Includes 10 Insulations)
7.	8S-4684	[1]	KIT (Bearing And Wick)
8.	9G-5854	[1]	HOUSING ASSEM. (Pinion)
9.	9F-2247	[1]	PLUG
10.	8S-4680	[1]	KIT (Includes 10 Seals)
11.	9G-5587	[1]	DRIVE ASSEM.
12.	2H-3931	[1]	SEAL
13.	2P-8824	[1]	HOUSING ASSEM.
	2B-4602	[1]	PLUG
14.	8S-2226	[1]	BUSHING
15.	8S-2225	[1]	SEAL
16.	0L-1340	[7]	SCREW
	2P-8816	[1]	KIT (Includes Housing Screws)
17.	3B-4504	[7]	LOCKWASHER
18.	4M-0189	[1]	SEAL
19.	2P-8818	[1]	KIT (Field Coil)
			(Includes Coils, Gaskets And Screws)
20.	8S-1546	[1]	ARMATURE ASSEM.
	8S-8075	[1]	KIT (Armature Thrust Washers)

#UEG0807S0061

9G-5584: STARTING MOTOR GP-ELECTRIC

STARTING MOTOR GP-ELECTRIC

9G5584 ELECTRIC STARTING MOTOR GROUP--24 Volt--Prestolite--Part 1 of 2--Type 2
Serial No. 45P1512 to 45P1514 and 45P1516-Up
Part of 6N1889 Electric Starting Motor Group shown on Page 26C-2
3T3369 Solenoid parts are shown on Page 26C-1

c302537 UEG0807S

For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1D-5117	[2]	NUT (jam)
2.	3B-4508	[6]	LOCKWASHER
3.	4N-9405	[1]	CONNECTOR
4.	4N-9404	[1]	LEAD ASSEM.
5.	2P-8819	[1]	KIT (Field Terminal Stud)
			(Includes Stud, Bushing And Washers)
6.	1D-4719	[4]	NUT
7.	3T-3369 CY	[1]	SOLENOID ASSEM.
			(Separate Illustration)
8.	6H-3622	[4]	SCREW
	3B-4504	[4]	LOCKWASHER
	3K-6116	[4]	WASHER
9.	4M-3217	[2]	SCREW
10.	5D-8412	[3]	SCREW
11.	8S-1553	[1]	GASKET
12.	3B-4502	[7]	LOCKWASHER
13.	1P-7831	[1]	HEAD ASSEM. (Commutator End)
14.	2B-4602	[1]	PLUG
15.	1P-7832	[1]	KIT (Bearing And Wick)
16.	4N-9403	[1]	KIT-(Commutator End Terminal Stud)
			(Includes Stud, Bushing And Washers)
17.	9G-5588	[1]	SPACER
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#UEG0807S0062

9G-5584: STARTING MOTOR GP-ELECTRIC

STARTING MOTOR GP-ELECTRIC

9G5584 ELECTRIC STARTING MOTOR GROUP--24 Volt--Prestolite--Part 2 of 2--Type 2
Serial No. 45P1512 to 45P1514 and 45P1516-Up
Part of 6N1889 Electric Starting Motor Group shown on Page 26C-2

c228140 UEG0807S

For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	2P-8822	[1]	PLATE ASSEM.
2.	4N-9401	[1]	KIT (Includes 6 Brushes)
	2P-8868	[1]	KIT (Includes 8 Springs)
3.	2P-8825	[1]	SHIFT YOKE ASSEM.
4.	2P-8817	[1]	KIT (Yoke Adjusting)
			(Includes Plugs, Pin, Gasket And Nut)
5.	8S-1535	[1]	KIT (Includes 6 Plugs)
6.	4N-9402	[1]	KIT (Includes 10 Insulations)
7.	8S-4684	[1]	KIT (Bearing And Wick)
8.	9G-5854	[1]	HOUSING ASSEM. (Pinion)
9.	9F-2247	[1]	PLUG
10.	8S-4680	[1]	KIT (Includes 10 Seals)
11.	9G-5587	[1]	DRIVE ASSEM.
12.	2H-3931	[1]	SEAL
13.	2P-8824	[1]	HOUSING ASSEM.
	2B-4602	[1]	PLUG
14.	8S-2226	[1]	BUSHING
15.	8S-2225	[1]	SEAL
16.	0L-1340	[7]	SCREW
	2P-8816	[1]	KIT (Includes Housing Screws)
17.	3B-4504	[7]	LOCKWASHER
18.	4M-0189	[1]	SEAL
19.	2P-8818	[1]	KIT (Field Coil)
			(Includes Coils, Gaskets And Screws)
20.	8S-1546	[1]	ARMATURE ASSEM.
	8S-8075	[1]	KIT (Armature Thrust Washers)

#UEG0807S0063

4N-0957: STARTING MOTOR GP-ELECTRIC

STARTING MOTOR GP-ELECTRIC

4N957 ELECTRIC STARTING MOTOR GROUP--Delco-Remy--24 Volt--Part 1 of 3
Serial No. 45P1512 to 45P1514 and 45P1516-Up
Part of 4N1062 Electric Starting Motor Group shown on Page 26B
6N5123 Switch parts are shown on Page 26C

c170309 UEG0807S

4N0957 STARTING MOTOR GP-ELECTRIC Parts scheme

For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7F-4556	[4]	BOLT
2.	1L-4789	[4]	LOCKWASHER
3.	4M-1844	[1]	FRAME ASSEM.
			(Includes)
4.	7S-9826	[1]	PLUG
5.	3S-2398	[1]	BUSHING
6.	2B-4602	[1]	PLUG
7.	9F-2547	[1]	WICK
8.	2L-8166	[1]	WASHER
9.	4M-1868	[1]	ARMATURE ASSEM.
10.	3L-3380	[1]	BUSHING
11.	4M-1839	[1]	COIL ASSEM.
12.	9H-3757	[2]	WASHER
13.	7F-3494	[1]	WASHER
14.	4M-1841	[1]	CONNECTOR
15.	1D-5117	[2]	NUT
16.	6N-5123 CY	[1]	SWITCH ASSEM.
			(Separate Illustration)
17.	6H-3622	[4]	SCREW ASSEM.
18.	3B-4508	[1]	LOCKWASHER
19.	3F-0379	[8]	SCREW
20.	2N-3145	[1]	INSULATOR
21.	4M-1831	[2]	PLUG
22.	7L-2894	[2]	GASKET
23.	1H-2629	[2]	STRIP
24.	8H-1141	[4]	SHOE
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#UEG0807S0064

4N-0957: STARTING MOTOR GP-ELECTRIC

STARTING MOTOR GP-ELECTRIC

4N957 ELECTRIC STARTING MOTOR GROUP--Delco-Remy--24 Volt--Part 2 of 3
Serial No. 45P1512 to 45P1514 and 45P1516-Up
Part of 4N1062 Electric Starting Motor Group shown on Page 26B

c220743 UEG0807S

For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	4M-1849	[1]	LEAD ASSEM.
2.	4M-0189	[1]	SEAL
3.	7F-3529	[3]	WASHER
4.	8H-0878	[3]	LOCKWASHER
5.	4B-1220	[3]	SCREW
6.	4M-1846	[1]	PLATE ASSEM.
			(Includes)
7.	7F-3525	[8]	WASHER
8.	7F-4550	[1]	PLATE
9.	5H-6467	[2]	SCREW
10.	7H-2079	[8]	LOCKWASHER
11.	2L-6679	[2]	PLATE
12.	7F-4546	[4]	HOLDER
13.	7F-3522	[2]	SCREW
14.	7F-3512	[8]	SPRING
15.	9M-7652	[1]	PLATE ASSEM.
16.	7F-4549	[2]	PLATE
17.	4B-1311	[2]	SCREW
18.	7F-4545	[1]	PLATE
19.	3H-3697	[2]	SCREW
20.	2F-2860	[8]	SCREW
	3B-4501	[8]	LOCKWASHER
21.	4M-1845	[8]	BRUSH ASSEM.
22.	7F-3494	[1]	WASHER
23.	3B-4508	[2]	LOCKWASHER
24.	1D-5117	[1]	NUT
25.	1D-4719	[1]	NUT
26.	7F-3491	[2]	WASHER
			THE FOLLOWING REPAIR KIT IS AVAILABLE:
	3N-3763	[1]	KIT (insulator)
			(Includes insulator, bushings and washer)

#UEG0807S0065

4N-0957: STARTING MOTOR GP-ELECTRIC

STARTING MOTOR GP-ELECTRIC

4N957 ELECTRIC STARTING MOTOR GROUP--Delco Remy--24 Volt--Part 3 of 3
Serial No. 45P1512 to 45P1514 and 45P1516-Up
Part of 4N1062 Electric Starting Motor Group shown on Page 26B

c170412 UEG0807S

For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9M-7606	[1]	PLUNGER ASSEM.
2.	4M-0188	[1]	WASHER
3.	4M-1829	[1]	BOOT
4.	4M-1828	[1]	RETAINER
5.	9M-7609	[1]	SPRING
6.	4M-1827	[1]	RETAINER
7.	1H-1023	[1]	SEAL
8.	4S-7899	[1]	HOUSING ASSEM.
			(Includes)
9.	9F-2547	[1]	WICK
10.	2B-4602	[1]	PLUG
11.	1M-9968	[1]	BUSHING
12.	2F-6678	[1]	SEAL
13.	4L-2729	[1]	WASHER
14.	4L-2729	[1]	WASHER
15.	4M-1853	[1]	LEVER ASSEM.
16.	3F-2617	[1]	NUT
17.	7L-2894	[1]	GASKET
18.	4M-1831	[1]	PLUG
19.	1S-0297	[1]	HOUSING ASSEM.
			(Includes)
20.	4M-1896	[1]	BUSHING
21.	4M-1833	[5]	SCREW 38.10 mm(1.50 in.) long
	7M-0336	[1]	SCREW 22.23 mm(.875 in.) long
22.	6N-3826 H	[1]	DRIVE ASSEM. (480321)
			-OR-
	1P-2508	[1]	DRIVE ASSEM. (1894211)
			(Includes)
23.	9S-9774	[1]	PINION
24.	9M-7611	[2]	RING
25.	2D-6392	[1]	SEAL
26.	7F-4556	[5]	BOLT
27.	1L-4789	[5]	LOCKWASHER
28.	4M-0189	[1]	SEAL
29.	1M-9971	[1]	SPACER
30.	4M-1851	[1]	GASKET
31.	4M-1854	[1]	SHAFT
			THE FOLLOWING REPAIR KITS ARE AVAILABLE FOR 1P2508 DRIVE ASSEM:
	7N-6098	[1]	KIT (cup)
			(Includes cup, spring and retainer)
	4S-9459	[1]	KIT (washer)
			(Includes cup & washers)
	H		NOT PART OF 4N957 MOTOR GROUP

#UEG0807S0066

9G-5585: STARTING MOTOR GP-ELECTRIC

STARTING MOTOR GP-ELECTRIC

9G5585 ELECTRIC STARTING MOTOR GROUP--24 Volt--Delco-Remy--Part 1 of 3
Serial No. 45P1512 to 45P1514 & 45P1516-Up
Part of 6N1889 Electric Starting Motor Group listed on Page 26C-2
4M1812 Solenoid Switch parts are shown on Page 26C-1

c228141 UEG0807S

9G5585 STARTING MOTOR GP-ELECTRIC Parts scheme

For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7F-4556	[4]	BOLT
2.	1L-4789	[4]	LOCKWASHER
3.	4M-1844	[1]	FRAME ASSEM.
			(Includes)
4.	7S-9826	[1]	PLUG
5.	3S-2398	[1]	BUSHING
6.	2B-4602	[1]	PLUG
7.	9F-2547	[1]	WICK
8.	2L-8166	[1]	WASHER
9.	4M-1868	[1]	ARMATURE ASSEM.
10.	3L-3380	[1]	BUSHING
11.	4M-1839	[1]	COIL ASSEM.
12.	9H-3757	[2]	WASHER
13.	7F-3494	[1]	WASHER
14.	4M-1841	[1]	CONNECTOR
15.	1D-5117	[2]	NUT
16.	4M-1812 Y	[1]	SWITCH ASSEM.
			(Separate Illustration)
17.	6H-3622	[4]	SCREW
18.	3B-4508	[1]	LOCKWASHER
19.	3F-0379	[8]	SCREW
20.	2N-3145	[1]	INSULATOR
21.	4M-1831	[2]	PLUG
22.	7L-2894	[2]	GASKET
23.	1H-2629	[2]	STRIP
24.	8H-1141	[4]	SHOE
	Y		SEPARATE ILLUSTRATION

#UEG0807S0067

9G-5585: STARTING MOTOR GP-ELECTRIC

STARTING MOTOR GP-ELECTRIC

9G5585 ELECTRIC STARTING MOTOR GROUP--24 Volt--Delco-Remy--Part 2 of 3
Serial No. 45P1512 to 45P1514 & 45P1516-Up
Part of 6N1889 Electric Starting Motor Group listed on Page 26C-2

c228142 UEG0807S

For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	4M-1849	[1]	LEAD ASSEM.
2.	4M-0189	[1]	SEAL
3.	7F-3529	[3]	WASHER
4.	8H-0878	[3]	LOCKWASHER
5.	4B-1220	[3]	SCREW
6.	4M-1846	[1]	PLATE ASSEM.
			(Includes)
7.	7F-3525	[8]	WASHER
8.	7F-4550	[1]	PLATE
9.	5H-6467	[2]	SCREW
10.	7H-2079	[8]	LOCKWASHER
11.	2L-6679	[2]	PLATE
12.	7F-4546	[4]	HOLDER
13.	7F-3522	[2]	SCREW
14.	7F-3512	[8]	SPRING
15.	9M-7652	[1]	PLATE ASSEM.
16.	7F-4549	[2]	PLATE
17.	4B-1311	[2]	SCREW
18.	7F-4545	[1]	PLATE
19.	3H-3697	[2]	SCREW
20.	2F-2860	[8]	SCREW
	3B-4501	[8]	LOCKWASHER
21.	4M-1845	[8]	BRUSH ASSEM.
22.	7F-3494	[1]	WASHER
23.	3B-4508	[2]	LOCKWASHER
24.	1D-5117	[1]	NUT
25.	1D-4719	[1]	NUT
26.	7F-3491	[2]	WASHER
			THE FOLLOWING REPAIR KIT IS AVAILABLE:
	3N-3763	[1]	KIT (insulator)
			(Includes insulator,bushings and washer)

#UEG0807S0068

9G-5585: STARTING MOTOR GP-ELECTRIC

STARTING MOTOR GP-ELECTRIC

9G5585 ELECTRIC STARTING MOTOR GROUP--24 Volt--Delco-Remy--Part 3 of 3
Serial No. 45P1512 to 45P1514 & 45P1516-Up
Part of 6N1889 Electric Starting Motor Group listed on Page 26C-2

c228143 UEG0807S

For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9M-7606	[1]	PLUNGER ASSEM.
2.	4M-0188	[1]	WASHER
3.	4M-1829	[1]	BOOT
4.	4M-1828	[1]	RETAINER
5.	9M-7609	[1]	SPRING
6.	4M-1827	[1]	RETAINER
7.	1H-1023	[1]	SEAL
8.	4S-7899	[1]	HOUSING ASSEM.
			(Includes)
9.	9F-2547	[1]	WICK
10.	2B-4602	[1]	PLUG
11.	1M-9968	[1]	BUSHING
12.	2F-6678	[1]	SEAL
13.	4L-2729	[1]	WASHER
14.	4L-2729	[1]	WASHER
15.	4M-1853	[1]	LEVER ASSEM.
16.	3F-2617	[1]	NUT
17.	7L-2894	[1]	GASKET
18.	4M-1831	[1]	PLUG
19.	1S-0297	[1]	HOUSING ASSEM.
			(Includes)
20.	4M-1896	[1]	BUSHING
21.	4M-1833	[5]	SCREW 38.10 mm(1.50 in.) long
	7M-0336	[1]	SCREW 22.23 mm(.875 in.) long
22.	6N-3826 A	[1]	DRIVE ASSEM. (480321)
			-OR-
	1P-2508	[1]	DRIVE ASSEM. (1894211)
			(Includes)
23.	9S-9774	[1]	PINION
24.	9M-7611	[2]	RING
25.	2D-6392	[1]	SEAL
26.	7F-4556	[5]	BOLT
27.	1L-4789	[5]	LOCKWASHER
28.	4M-0189	[1]	SEAL
29.	1M-9971	[1]	SPACER
30.	4M-1851	[1]	GASKET
31.	4M-1854	[1]	SHAFT
			THE FOLLOWING REPAIR KITS ARE AVAILABLE FOR 1P2508 DRIVE ASSEM.:
	7N-6098	[1]	KIT (cup)
			(Includes cup, spring and retainer)
	4S-9459	[1]	KIT (washer)
			(Includes cup and washers)
	A		NOT PART OF THIS GROUP

#UEG0807S0069

5S-9088: ALTERNATOR GP-CHARGING

ALTERNATOR GP-CHARGING

5S9088 ALTERNATOR ASSEMBLY--24 Volt, 50 Ampere--Part 1 of 2
Standard with Serial No. 45P1512 to 45P1514 and 45P1516 to 45P2084 inclusive & Attachment with Serial No. 45P2085-Up
Part of 4N2286 & 6N8991 Alternator Groups shown on Pages 26K & 27

c162528 UEG0807S

5S9088 ALTERNATOR GP-CHARGING Parts scheme

For full view, you need register

Parts for your 621B WHEEL TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9S-2260	[1]	PLATE
2.	9S-2544	[4]	SCREW
3.	8H-0878	[6]	LOCKWASHER
4.	9S-2438	[2]	SCREW
5.	7H-2079	[7]	LOCKWASHER
6.	9S-2255	[1]	COVER
7.	9S-2262	[1]	GASKET
8.	9S-2246	[1]	LEAD ASSEM.
9.	9S-9830	[1]	SCREW
10.	8F-1326	[3]	WASHER
11.	9B-7233	[3]	LOCKWASHER (shake proof)
12.	9S-9829	[1]	SCREW ASSEM.
13.	4B-2043	[4]	NUT
14.	7N-0129 C	[1]	REGULATOR ASSEM.
15.	9S-2250	[1]	GROMMET
16.	9S-2542	[1]	SCREW
17.	9S-2437	[5]	SCREW
18.	9S-2389	[1]	STUD ASSEM.
19.	7N-0174 C	[1]	HOUSING ASSEM.
			(Includes)
20.	9N-0943	[1]	PLUG
21.	5P-3418	[1]	BEARING
22.	9S-2396	[1]	BUSHING
23.	9S-2292	[1]	HEAT SINK ASSEM.
24.	9S-2300	[4]	INSULATOR
25.	9S-9830	[4]	SCREW
	9S-2247	[4]	WASHER (spring)
	4B-4863	[4]	WASHER (plain)
26.	9S-2007	[3]	SCREW
27.	9S-2301	[1]	INSULATION
	9S-2013 A	[1]	KIT (terminal relay)
			(Consists of Bushing, "O" Ring and Hardware)
	9S-2012 A	[1]	KIT (terminal output)
			(Consists of Gaskets, Terminal and Hardware)
	9S-2290 A	[1]	KIT (heat sink)
			(Diode Junction Hardware)
	9S-2291 A	[1]	KIT (heat sink)
			(Positive Diode Hardware)
	A		NOT PART OF THIS GROUP
	C		INDICATES CHANGE

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 Emergency Starting Receptacles{1453, 1463}
Installation of Emergency Starting Receptacles{1453, 1463}

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 Motors
3406 ENGINE FOR CATERPILLAR BUILT MACHINES

Starter Solenoids
3406 ENGINE FOR CATERPILLAR BUILT MACHINES

Electric Starting Motor
3406C Engines for Caterpillar Built Machines

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

Electric Starting Motor
3406C Engines for Caterpillar Built Machines

Starting Motor
Starting Motor - Delco 50-MT

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

Component Description
Starting Motor - Delco 50-MT

General Information
Starting Motor - Delco 50-MT

Normal Operation
Starting Motor - Delco 50-MT

Testing and Adjusting

Electric Starting System - Test
3406E and 3456 Engines for Caterpillar Built Machines

Pinion Clearance - Adjust
3406E and 3456 Engines for Caterpillar Built Machines

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

Starting Motor Solenoid - Test
Starting Motor - Delco 50-MT

Field Winding - Test
Starting Motor - Delco 50-MT

Armature - Test
Starting Motor - Delco 50-MT

Brush and Brush Holder - Check
Starting Motor - Delco 50-MT

Pinion Drive - Check
Starting Motor - Delco 50-MT

No Load - Test
Starting Motor - Delco 50-MT

Pinion Clearance - Adjust
Starting Motor - Delco 50-MT

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

General Information
Starting Motor - Delco 50-MT

Pinion Does Not Engage Ring Gear
Starting Motor - Delco 50-MT

Engine Does Not Crank with Starting Motor On and Pinion Engaging Ring Gear
Starting Motor - Delco 50-MT

Starting Motor Continues to Operate after Start Switch Has Been Released
Starting Motor - Delco 50-MT

Pinion Continues to Engage after Engine Starts
Starting Motor - Delco 50-MT

Starting Motor Does Not Turn or Turns Slowly
Starting Motor - Delco 50-MT

Disassembly and Assembly

Starter
3406 VEHICULAR ENGINE FOR 621B & 623B TRACTORS

Electric Starting Motor - Remove and Install
3406E and 3456 Engines for Caterpillar Built Machines

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

Electric Starting Motor - Remove and Install
C15 and C18 Engines for Caterpillar Built Machines

General Information
Starting Motor - Delco 50-MT

Starting Motor - Disassemble
Starting Motor - Delco 50-MT

Starting Motor - Assemble
Starting Motor - Delco 50-MT

Service Magazine

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

New Starter Used That Eliminates Interference With Engine Mount {1152,1453}
1986/02/24

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

New PRELUB Systems Available For Medium To Large Caterpillar Construction Equipment {1319}
1992/04/06

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

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

Improved Remanufactured Heavy-Duty Starting Motors Are Available {1453}
2003/11/10

A New Gasket Is Available for Mounting of the Electric Starting Motor on Some Wheel Tractor-Scrapers {1453}
2009/12/08

Caterpillar Parts SIS Catalog 621B :

9G-5584 STARTING MOTOR GP-ELECTRIC

6N-1888 STARTING MOTOR GP-ELECTRIC

6N-1889 STARTING MOTOR GP-ELECTRIC

3T-3369 SOLENOID AS

4M-1812 SWITCH AS-SOLENOID

9S-7976 SOLENOID AS

6N-5123 SWITCH AS-SOLENOID

9G-5584 STARTING MOTOR GP-ELECTRIC

4N-0957 STARTING MOTOR GP-ELECTRIC

9G-5585 STARTING MOTOR GP-ELECTRIC

Truck sale:

Caterpillar 621B
- Road Scraper
MACALLISTER MACHINERY CO., INC

Caterpillar 621B
- Road Scraper
FINNING CANADA

46,500

Caterpillar 621B, Road Scraper, Construction
- Road Scraper
QUINN COMPANY

46,500

Caterpillar 621B, Road Scraper, Construction
- Road Scraper
QUINN COMPANY