8N8481 AIR STARTING LINES GROUP-TYPE 2 FOR USE WITH AIR START OR AIR START WITH ELECTRIC PRELUBE 4N7556-PAGE 159 AN ATTACHMENT 3508

ELECTRICAL AND STARTING SYSTEM

STARTING MOTOR GP

0. 8N-8481 LINES GP-A
1. 4N-7556 LUBRICATOR

BASIC ENGINE

AIR COMPRESSOR GP

2. 8N-8360 AIR COMPRE
3. 8N-8360 AIR COMPRE
4. 8N-8360 AIR COMPRE
5. 8N-8360 AIR COMPRE
6. 1W-8495 AIR COMPRE

AIR INLET AND EXHAUST SYSTEM

AFTERCOOLER GP

7. 7N-8676 AFTERCOOLE
8. 7N-8722 AFTERCOOLE

TURBOCHARGER GP

9. 1W-7583 TURBOCHARG
0. INFORMATION

INDUSTRIAL ENGINE 3508 INDUSTRIAL ENGINE 68Z
3508 INDUSTRIAL ENGINE 68Z00001-00693 SEBP1380 3508 68Z (1982)

ELECTRICAL AND STARTING SYSTEM

STARTING MOTOR GP

8N-8481 LINES GP-AIR START

4N-7556 LUBRICATOR GP-AIR MOTOR

8N-3896 STARTING MOTOR GP-ELECTRIC

#SEBP13800390

8N-8481: LINES GP-AIR START

LINES GP-AIR START

8N8481 AIR STARTING LINES GROUP-TYPE 2
FOR USE WITH AIR START OR AIR START WITH ELECTRIC PRELUBE
4N7556-PAGE 159
AN ATTACHMENT

c571955 SEBP1380

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Parts for your 3508 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5B-7666	[1]	ELBOW
2.	6B-3685	[1]	ELBOW
3.	4N-3411	[1]	VALVE
4.	4N-7556 Y	[1]	LUBRICATOR GP-AIR MOTOR
5.	1B-2886	[2]	BOLT
6.	5P-1075	[2]	WASHER-HARD
7.	5B-7643 C	[2]	NIPPLE-PIPE
8.	9S-8752	[2]	NUT-FULL
9.	3L-8993 C	[1]	NIPPLE-CLOSE
10.	6F-5985	[1]	HOSE AS
11.	5N-2728	[1]	ELBOW
12.	3B-6552	[1]	ELBOW
13.	4M-5317	[2]	BUSHING
14.	6N-3169 I	[1]	HOSE AS
15.	3J-7355	[2]	UNION-FLARED
16.	3N-4622 I	[1]	HOSE AS
17.	5L-2534	[1]	U-BOLT
18.	8N-8449	[1]	BRACKET
19.	2L-2811	[2]	NIPPLE
20.	6K-1972	[1]	ELBOW-FLARED
21.	6N-3170 CI	[1]	HOSE AS
22.	3B-6492	[1]	COUPLING-PIPE
	C		CHANGE FROM PREVIOUS TYPE
	I		SEE HOSE FABRICATION GUIDE
	Y		SEPARATE ILLUSTRATION

#SEBP13800391

4N-7556: LUBRICATOR GP-AIR MOTOR

LUBRICATOR GP-AIR MOTOR

4N7556 AIR MOTOR LUBRICATOR GROUP
PART OF 8N8480 & 8N8481 AIR STARTING LINES GROUPS SHOWN ON PAGES 157 & 158
AN ATTACHMENT

c410205 SEBP1380

4N7556 LUBRICATOR GP-AIR MOTOR Parts scheme

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Parts for your 3508 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7C-4429 C	[1]	SEAL
2.	6N-2185	[2]	PLUG-FILLER
3.	6N-2188	[2]	BALL
4.	6N-2192	[1]	BOWL
5.	6N-2193	[1]	TUBE-SIPHON
6.	6N-2191	[1]	SEAT
7.	6N-2190	[1]	SPRING
8.	6N-2184	[1]	GASKET
	C		CHANGE FROM PREVIOUS TYPE

#SEBP13800392

8N-8360: AIR COMPRESSOR GP

AIR COMPRESSOR GP

8N8360 AIR COMPRESSOR GROUP-SIDE VIEW-TYPE 1
FOR USE WITH 1W7768 FUMES DISPOSAL GROUP SHOWN ON PAGE 73B
REFER TO CHART SHOWN ON PAGE 30 FOR USAGE. AN ATTACHMENT

c302608 SEBP1380

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Parts for your 3508 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5F-5434	[1]	VENT ASSEM.
2.	1N-2902	[1]	PULLEY
3.	6N-9042	[1]	GASKET
4.	5R-1771	[2]	BOLT
5.	1N-2906	[1]	BRACKET ASSEM.
6.	1W-0427	[1]	HOSE ASSEM. 24.5cm (9.65 in.)
7.	9M-6522	[2]	CONNECTOR
8.	0S-1594 C	[5]	BOLT
9.	5M-2894 C	[6]	WASHER
10.	3V-6153	[1]	HOSE ASSEM. 43 cm (16.93 in.)
11.	0S-1588	[4]	BOLT
12.	9L-5125	[1]	ELBOW
13.	032-1269 C	[4]	ELBOW
14.	0S-0509 C	[2]	BOLT
15.	030-3138	[1]	HOSE ASSEM.
16.	030-6212	[1]	HOSE ASSEM.
17.	061-9593	[1]	BUSHING
18.	8S-3215 C	[3]	CLAMP
19.	6B-0933 C	[4]	SPACER
20.	2N-5104 C	[1]	CLAMP
21.	9F-2247	[4]	PLUG
22.	9L-5254	[1]	ELBOW (45 degrees)
23.	0S-1591 C	[1]	BOLT
24.	1D-4717 C	[2]	NUT
25.	5S-1445 C	[1]	BRACKET
26.	3P-2404 C	[1]	CLIP
27.	2B-0858 C	[1]	PLUG
	C		INDICATES CHANGE

#SEBP13800393

8N-8360: AIR COMPRESSOR GP

AIR COMPRESSOR GP

8N8360 AIR COMPRESSOR GROUP-END VIEW-TYPE 1
FOR USE WITH 1W7768 FUMES DISPOSAL GROUP SHOWN ON PAGE 73B
1W8495 AIR COMPRESSOR PARTS ARE SHOWN ON PAGE 161B. REFER TO CHART
SHOWN ON PAGE 30 FOR USAGE. AN ATTACHMENT

c302609 SEBP1380

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Parts for your 3508 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7N-5743	[1]	ADAPTER ASSEM.
			(Includes)
	7N-5740	[1]	ADAPTER
2.	7N-5244	[1]	BEARING
3.	8M-5255	[1]	SEAL
4.	0S-1590	[8]	BOLT
5.	5M-2894 C	[12]	WASHER
6.	1D-4327	[1]	SEAL
7.	5B-8978 C	[1]	TEE
8.	1W-0429	[1]	HOSE ASSEM. 122 cm(48.04 in.)
9.	001-6412	[1]	CONNECTOR
10.	1W-7774	[1]	GUARD ASSEM.
11.	1W-8238	[1]	ADAPTER
	7N-4945	[1]	GASKET
12.	0S-1595	[4]	BOLT
	5P-8245	[4]	WASHER
13.	8N-3504	[1]	V-BELT
14.	0S-1594	[4]	BOLT
15.	4D-0514	[1]	PLUG
16.	1N-2903	[1]	PULLEY
17.	5J-7303	[1]	ELBOW
18.	1D-4717	[3]	NUT
19.	1N-2929	[1]	BASE
20.	3B-4618	[1]	COTTER
21.	1W-8495 Y	[1]	COMPRESSOR GROUP
			(Separate Illustration)
22.	1D-4540	[2]	BOLT
	9M-1974	[2]	WASHER
23.	0S-0509	[1]	BOLT
24.	0S-1591 C	[1]	BOLT
25.	4N-9681	[1]	GOVERNOR ASSEM.
			(Includes)
	2S-2923	[1]	COVER
26.	6L-1883	[1]	GASKET
27.	0T-0055	[1]	BOLT
	4J-4102	[1]	SPACER
28.	061-9593	[1]	BUSHING
29.	1L-4031 C	[1]	TEE
30.	3B-0551	[1]	PLUG
			THE FOLLOWING KIT IS AVAILABLE:
	9M-0402	[1]	KIT (Governor Overhaul)
			(Includes valve, filter, spring, cover, and grommets)
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#SEBP13800394

8N-8360: AIR COMPRESSOR GP

AIR COMPRESSOR GP

8N8360 AIR COMPRESSOR GROUP-SIDE VIEW-TYPE 2
FOR USE WITH 1W7768 FUMES DISPOSAL GROUP SHOWN ON PAGE 73B
REFER TO CHART SHOWN ON PAGE 30 FOR USAGE. AN ATTACHMENT

c335715 SEBP1380

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Parts for your 3508 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5F-5434	[1]	VENT AS
2.	1N-2902	[1]	PULLEY
3.	6N-9042	[1]	GASKET-AIR COMPRESSOR
4.	5R-1771	[2]	BOLT
5.	2W-8338 C	[1]	BRACKET AS
6.	1W-0427	[1]	HOSE AS
7.	9M-6522 C	[2]	CONNECTOR-FLARED
8.	0S-1594	[5]	BOLT
9.	5M-2894 C	[11]	WASHER
10.	3V-6153	[1]	HOSE AS
11.	0S-1588	[4]	BOLT
12.	9L-5125	[1]	ELBOW
13.	032-1269	[3]	ELBOW-FLARED
14.	3B-0551 C	[1]	PLUG-PIPE
15.	4F-4879 C	[1]	BOLT
16.	1W-6263 C	[2]	HOSE AS
17.	061-9593	[1]	BUSHING-REDUCING
18.	8S-3215 C	[1]	CLAMP-TUBE
19.	2P-1306 C	[1]	TEE
20.	2N-5104	[1]	CLAMP
21.	9F-2247	[4]	PLUG
22.	6H-7127 C	[1]	LUG
23.	033-2177 C	[1]	TEE-PIPE
24.	6N-8744 C	[2]	GROMMET AS
25.	9L-9132 C	[2]	WASHER
26.	9M-4815 C	[1]	CLIP
27.	2B-0858	[1]	PLUG-PIPE
28.	1A-5964 C	[1]	BOLT
29.	4B-4283 C	[2]	WASHER
30.	4J-4102	[1]	SPACER
	C		CHANGE FROM PREVIOUS TYPE

#SEBP13800395

8N-8360: AIR COMPRESSOR GP

AIR COMPRESSOR GP

8N8360 AIR COMPRESSOR GROUP-END VIEW-TYPE 2
FOR USE WITH 1W7768 FUMES DISPOSAL GROUP SHOWN ON PAGE 73B. 1W8495 AIR
COMPRESSOR PARTS ARE SHOWN ON PAGE 161B. REFER TO CHART SHOWN ON PAGE 30
FOR USAGE. AN ATTACHMENT

c335716 SEBP1380

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Parts for your 3508 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7N-5743	[1]	ADAPTER AS
	7N-5740	[1]	ADAPTER
2.	7N-5244	[1]	BEARING-SLEEVE
3.	8M-5255	[1]	SEAL-O-RING
4.	0S-1590	[8]	BOLT
5.	5M-2894	[8]	WASHER
6.	6V-8172 C	[1]	SEAL-LIP TYPE
7.	9L-5254	[1]	ELBOW (45 DEG)
8.	6B-8128 C	[1]	NIPPLE-PIPE
9.	8B-2664 C	[1]	BUSHING-REDUCING
10.	2W-8202 C	[1]	GUARD AS
11.	1W-8238	[1]	ADAPTER
	7N-4945	[1]	GASKET
12.	0S-1595	[4]	BOLT
	5P-8245	[4]	WASHER
13.	8N-3504	[1]	V-BELT
14.	0S-1594 C	[9]	BOLT
15.	4D-0514	[1]	PLUG-PIPE
16.	1N-2903	[1]	PULLEY
17.	5J-7303	[1]	ELBOW
18.	9S-8752 C	[3]	NUT-FULL
19.	1N-2929	[1]	BASE-AIR COMPRESSOR
20.	3B-4618	[1]	COTTER
21.	1W-8495 Y	[1]	AIR COMPRESSOR GP
22.	1D-4540	[2]	BOLT
	9M-1974	[2]	WASHER
23.	4B-7770 C	[1]	TEE
24.	0S-1591	[1]	BOLT
25.	4N-9681	[1]	GOVERNOR AS
	2S-2923	[1]	COVER-GOVERNOR
26.	6L-1883	[1]	GASKET-GOVERNOR
27.	030-7972 C	[1]	ELBOW
28.	061-9593	[1]	BUSHING-REDUCING
29.	1W-0428 C	[1]	HOSE AS
30.	3B-0551	[1]	PLUG-PIPE
31.	4B-4283 C	[1]	WASHER
32.	9L-9132 C	[2]	WASHER
33.	6N-8744 C	[1]	GROMMET AS
34.	032-1269 C	[2]	ELBOW-FLARED
35.	2M-4453 C	[1]	SEAL-O-RING

			THE FOLLOWING REPAIR
			KIT IS AVAILABLE:
	9M-0402	[1]	KIT-GOVERNOR OVERHAUL
			(INCLUDES VALVE,
			FILTER, SPRING,
			COVER & GROMMETS)
	C		CHANGE FROM PREVIOUS TYPE
	Y		SEPARATE ILLUSTRATION

#SEBP13800396

1W-8495: AIR COMPRESSOR GP

AIR COMPRESSOR GP

1W8495 AIR COMPRESSOR GROUP
PART OF 8N8360 AIR COMPRESSOR GROUP SHOWN ON PAGE 161. AN ATTACHMENT

c602544 SEBP1380

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Parts for your 3508 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7N-7450	[1]	COVER-UNLOADER
2.	0S-1615	[2]	BOLT
	3B-4504	[2]	LOCKWASHER
3.	4W-9479	[1]	MANIFOLD-EXHAUST
4.	2B-2695	[4]	BOLT
	3B-4505	[4]	LOCKWASHER
5.	7N-7451	[1]	GASKET-UNLOADER
6.	9M-0397	[1]	ADAPTER-INLET
7.	1A-2029	[6]	BOLT
	3B-4506	[6]	LOCKWASHER
8.	7N-7445	[1]	CYLINDER BLOCK
	7N-7446	[1]	GASKET-AIR COMPRESSOR
9.	7N-7442	[2]	GASKET-AIR COMPRESSOR
10.	034-4160	[8]	BOLT-LOCKING
11.	1W-9277	[1]	COVER-AIR COMPRESSOR
12.	7N-7444	[2]	ROD AS-AIR COMPRESSOR
	7N-7443	[2]	PISTON AS-COMPRESSOR
13.	1W-9276	[1]	CRANKSHAFT-AIR COMPRESSOR
14.	4H-3157	[1]	KEY-WOODRUFF
15.	8H-9789	[2]	BALL BEARING
16.	7N-7448	[1]	GASKET-AIR COMPRESSOR
17.	1W-9275	[1]	CRANKCASE-COMPRESSOR
18.	1W-9279	[1]	SEAL
19.	5P-8026	[1]	PIN-COTTER
20.	6F-7063	[1]	NUT-SLOTTED
21.	1W-9278	[1]	COVER-AIR COMPRESSOR
22.	0S-1619	[5]	BOLT
23.	7N-7447	[1]	HEAD AS-COMPRESSOR
24.	1S-7107	[1]	GASKET
25.	0L-1352	[1]	BOLT
	5M-2894	[1]	WASHER
26.	2B-0858	[1]	PLUG-PIPE
27.	4B-4845	[2]	PLUG
28.	8M-7065	[1]	GASKET-AIR INLET
29.	4W-9489 C	[1]	LOCKRING

			THE FOLLOWING REPAIR
			KITS ARE AVAILABLE:
	7N-7435	[1]	KIT-AIR COMPRESSOR (MAJOR REPAIR)
			(INCLUDES VALVES, SEATS,
			BEARINGS, SPRINGS, ETC.)
	7N-7436	[1]	KIT-PISTON RING (PISTON RING)
	4P-6409	[1]	KIT-PIN
	C		CHANGE FROM PREVIOUS TYPE

#SEBP13800397

7N-8676: AFTERCOOLER GP-WATER

AFTERCOOLER GP-WATER

7N8676 AFTERCOOLER GROUP-WATER (SEA AIR)
AN ATTACHMENT

c235617 SEBP1380

7N8676 AFTERCOOLER GP-WATER Parts scheme

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Parts for your 3508 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7M-9909	[2]	SEAL
2.	6V-1454	[6]	SEAL
3.	2B-0858	[4]	PLUG
4.	1W-1260	[1]	HOUSING
5.	1W-1253	[1]	GASKET
6.	1W-1258	[1]	HOUSING
7.	8N-2409	[2]	ADAPTER
8.	5M-6213	[1]	PLUG
9.	5F-4899	[2]	BOLT
10.	8N-9654	[1]	ADAPTER
11.	1A-9066	[1]	GASKET
12.	1T-0720	[12]	BOLT
13.	5M-2894	[40]	WASHER
14.	1W-5728	[2]	SLEEVE
15.	8N-2928	[1]	GASKET
16.	0L-1143	[28]	BOLT
17.	1W-4955	[28]	SPACER
18.	8N-4792	[1]	CORE ASSEM.
19.	4N-0684	[2]	PIN
20.	0S-1617	[14]	BOLT
	9M-1974	[14]	WASHER
21.	1W-5421	[1]	CONNECTOR
22.	4H-1860	[2]	SEAL
23.	1M-7913	[1]	RING

#SEBP13800398

7N-8722: AFTERCOOLER GP-WATER

AFTERCOOLER GP-WATER

7N8722 AFTERCOOLER GROUP-WATER (FRESH AIR)

c574483 SEBP1380

7N8722 AFTERCOOLER GP-WATER Parts scheme

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Parts for your 3508 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7M-9909	[2]	SEAL-O-RING
2.	6V-1454	[6]	SEAL-O-RING
3.	8T-6762	[4]	PLUG-PIPE
4.	107-8760	[1]	HOUSING-REAR
5.	1W-1253	[1]	GASKET
6.	107-8758	[1]	HOUSING-FRONT
7.	8N-2409	[2]	ADAPTER
8.	8T-6765	[1]	PLUG-PIPE
9.	5F-4899	[2]	BOLT (3/8-16X5.5IN)
10.	8N-9654	[1]	ADAPTER
11.	1A-9066	[1]	GASKET
12.	1T-0720	[12]	BOLT-12 POINT HEAD
13.	5M-2894	[40]	WASHER
14.	1W-5728	[2]	SLEEVE
15.	8N-2928	[1]	GASKET
16.	0L-1143	[28]	BOLT (3/8-16X2.5IN)
17.	1W-4955	[28]	SPACER
18.	7W-5456	[1]	CORE AS-AFTERCOOLER
19.	4N-0684	[2]	PIN-DOWEL
20.	031-4630	[14]	BOLT-SELF LOCKING
	9M-1974	[14]	WASHER-HARD
21.	1W-5421	[1]	CONNECTOR
22.	8C-5209	[2]	SEAL-O-RING
23.	1M-7913	[1]	RING-NUT LOCK

#SEBP13800399

1W-7583: TURBOCHARGER GP

TURBOCHARGER GP

1W7583 TURBOCHARGER GROUP
1W8424 & 1W8425 TURBOCHARGER PARTS ARE SHOWN ON PAGE 165

c300415 SEBP1380

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Parts for your 3508 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1W-8424 Y	[1]	TURBOCHARGER GROUP (L.H.)
			(Separate Illustration)
2.	1W-8425 Y	[1]	TURBOCHARGER GROUP (R.H.)
			(Separate Illustration)
3.	7M-7273	[2]	GASKET
4.	2N-2765	[8]	BOLT
5.	2N-2766	[8]	LOCKNUT
6.	1N-4730	[2]	COUPLING
	Y		SEPARATE ILLUSTRATION

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

New Air Starting Motor Has A Slip-Clutch Type Drive Gear
1983/10/26

New Air Start And Override Valve Has Stronger Mounting
1984/06/20

12-Volt Starter Solenoid Available For 7T2265 And 7T2266 Starting Motors
1987/02/01

Modification To Prevent Starter From Remaining Engaged With Flywheel After Engine Starts
1987/03/01

Testing The Starter On The Engine
1987/05/01

Remanufactured Heavy-Duty Starters And High-Amp Alternators
1987/06/01

Be Sure Battery Cable To Starter Connection Has Correct Torque
1988/03/01

Magnetic Switches (Starter Relays) Improved
1988/03/01

Air Starter Relay Valve Improved
1991/07/01

New Starting Motors Used {1453}
2002/05/01

A New Turbine-Type Starting Motor Is Available for Certain 3500 Engines {1451}
2012/08/30

Operation and Maintenance Manual

Air Tank Moisture and Sediment - Drain
3500 Industrial and Generator Set Engines

Air Starting Motor Lubricator Bowl - Clean
3500 Industrial and Generator Set Engines

Air Starting Motor Lubricator Oil Level - Check
3500 Industrial and Generator Set Engines

Starting Motor - Inspect
3500 Industrial and Generator Set Engines

Cold Weather Starting
3500 Industrial and Generator Set Engines

Starting the Engine
3500 Industrial and Generator Set Engines

Air Starting Motor - Inspect
3500 Industrial and Generator Set Engines

Special Instruction

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

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

Solenoid (Starting Motor) − Replace{1467}
Solenoid (Starting Motor) − 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

Electric Starting Motor
3500 Industrial Engines

Air Starting Motor
3500 Industrial Engines

Air Starting Motor Pressure Regulating Valve
3500 Industrial Engines

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

Starting Motor
Starting Motor - Delco 50-MT

Electric Starting Motor
3500 Industrial Engines

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

Starting Motor
3500 Industrial Engines

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
3500 Industrial Engines

Pinion Clearance Adjustment
3500 Industrial Engines

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

Pressure Regulating Valve
3500 Industrial Engines

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

AIR STARTER (AN ATTACHMENT)
3500 INDUSTRIAL ENGINE

Air Starter (An Attachment)
3500 INDUSTRIAL ENGINE

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

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 Air Starting Motor Has A Slip-Clutch Type Drive Gear{1451}
1983/10/17

New Air Start And Override Valve Has Stronger Mounting{1451}
1984/06/11

New Seal Prevents Oil Leakage From Threads Of Magnetic Speed Pickups{7487,7462}
1986/06/09

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

Air Starter Relay Valve Improved{1462}
1991/06/24

Caterpillar Parts SIS Catalog 3508 :

8N-8481 LINES GP-AIR START

8N-8480 LINES GP-AIR

1W-9620 LINES GP-AIR

7N-8669 LINES GP-AIR

4N-7556 LUBRICATOR GP-AIR MOTOR

8N-8360 AIR COMPRESSOR GP

1W-8495 AIR COMPRESSOR GP

7N-8676 AFTERCOOLER GP-WATER

7N-8722 AFTERCOOLER GP-WATER

Truck sale:

61,000

Caterpillar 3508, Stationary Generator Sets, Construction
- Stationary Generator Sets
FOLEY EQUIPMENT COMPANY

307.208

Caterpillar 3508, Stationäre Stromaggregate, Bau-Und Bergbauausrüstung
- Stationary Generator Sets
TOROMONT POWER SYSTEMS

84,962

Caterpillar 3508, Industrial engines, Construction
- Industrial engines
FINANZAUTO S.A.

Caterpillar 3508, Marine Propulsion / Auxiliary Engines, Construction

145.548

Caterpillar 3508 PKGI, transportable stromaggregate, Bau-Und Bergbauausrüstung