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5L1750 AIR STARTING MOTOR ASSEMBLY--Counterclockwise Engine Rotation 3H3171 Air Motor parts are shown on Page 67 5L1749 AIR STARTING MOTOR ASSEMBLY--Clockwise Engine Rotation 3H3170 Air Motor parts are shown on Page 68 D379A


ELECTRICAL AND STARTING SYSTEM
STARTING MOTOR GP
AIR INLET AND EXHAUST SYSTEM
LINES GP-EXHAUST

MARINE ENGINE D379A MARINE ENGINE 69B
 D379 MARINE ENGINE 69B00001-00823 UE034171 D379A 69B   (1961)

ELECTRICAL AND STARTING SYSTEM

STARTING MOTOR GP
VALVE GP-PRESSURE REDUCING
1L-2073 VALVE GP-PRESSURE REDUCING
AIR RECEIVER GP
6F-7691 AIR RECEIVER GP
AIR STARTING MOTOR ASSEMBLY
5L-1750 AIR STARTING MOTOR ASSEMBLY
MOTOR AS-AIR
6L-6731 MOTOR AS-AIR
MOTOR AS-AIR
6L-6731 MOTOR AS-AIR
CHANGEOVER GP
4N-4985 CHANGEOVER GP
 

#UE0341710250
 

5L-1750: AIR STARTING MOTOR ASSEMBLY

5L1750 AIR STARTING MOTOR ASSEMBLY--Counterclockwise Engine Rotation
3H3171 Air Motor parts are shown on Page 67
5L1749 AIR STARTING MOTOR ASSEMBLY--Clockwise Engine Rotation
3H3170 Air Motor parts are shown on Page 68
c76372 UE034171
5L1750 AIR STARTING MOTOR ASSEMBLY Parts scheme
  For full view, you need register

Parts for your D379A MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  3H-3170 [1] MOTOR  
    (SAE OPPOSITE ROTATION)
    - OR -
  3H-3171 Y [1] MOTOR  
    (SAE STANDARD ROTATION)
    (SEE SEPARATE ILLUSTRATION)
  1L-7398 [1] DRIVE ASSEM. (BENDIX)  
    (SAE OPPOSITE ROTATION)
    - OR -
  1L-7340 [1] DRIVE ASSEM. (BENDIX)  
    (SAE STANDARD ROTATION)
  7F-3538 [1] BUSHING  
    (PART OF HOUSING ASSEM. 5L5507)
  0S-1618 [8] BOLT  
  3B-4505 [8] LOCKWASHER  
  9F-7216 [1] SCREW  
  9F-7215 [1] RING  
  7F-5452 [1] SPRING  
  [1] STOP  
  4B-1273 [1] SCREW  
    (PARTS OF DRIVE ASSEM. 1L7398 & 1L7340)
  5L-5507 [1] HOUSING ASSEM.  
  2B-4602 [2] PLUG  
  7F-3539 [1] WICK  
    (PARTS OF ASSEM. 5L5507)
  Y   SEPARATE ILLUSTRATION
 

#UE0341710251
 

6L-6731: MOTOR AS-AIR

6L6731 MOTOR ASSEMBLY--S.A.E. Standard Engine Rotation--Type 1
Part of 6L2801, 6L2804, 6L8418, 7L6914 and 7L6916 Groups shown on
Pages 62E, 62J, 62M, 62P and 62Q
6L6730 MOTOR ASSEMBLY--S.A.E. Opposite Standard Engine Rotation--Type 1
Part of 6L2803, 6L2802, 6L8417, 7L6913 and 7L6915 Groups shown on
Pages 62G, 62L, 62N, 62R and 63
3H3171 and 3H3170 Air Motor parts are shown on Pages 67 and 68
c100801 UE034171
6L6731 MOTOR AS-AIR Parts scheme
  For full view, you need register

Parts for your D379A MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  3H-3170 Y [1] MOTOR  
    (SAE OPPOSITE STANDARD ENGINE ROTATION)
    -OR-
  3H-3171 Y [1] MOTOR  
    (SAE STANDARD ENGINE ROTATION)
    (SEE SEPARATE ILLUSTRATION)
  5K-1770 [1] SEAL  
  0S-1618 [8] BOLT  
  3B-4505 [8] LOCKWASHER  
  9F-7216 [1] SCREW  
  9F-7215 [1] RING  
  7F-5452 [1] SPRING  
  [1] STOP  
  4B-1273 [1] SCREW  
    (PARTS OF DRIVE ASSEM. IL7398 AND IL7340)
  5L-5507 [1] HOUSING ASSEM.  
  2B-4602 [2] PLUG  
  7F-3539 [1] WICK  
    (PARTS OF ASSEM. 5L5507)
  1L-7398 [1] DRIVE ASSEM. (BENDIX)  
    (SAE OPPOSITE STANDARD ENGINE ROTATION)
    -OR-
  1L-7340 [1] DRIVE ASSEM. (BENDIX)  
    (SAE STANDARD ENGINE ROTATION)
  7F-3538 [1] BUSHING  
    (PART OF HOUSING ASSEM. 5L5507)
  Y   SEPARATE ILLUSTRATION
 

#UE0341710252
 

6L-6731: MOTOR AS-AIR

6L6731 MOTOR ASSEMBLY--S.A.E. Standard Engine Rotation--Type 2
Part of 6L2801, 6L2804, 6L8418, 7L6914 and 7L6916 Groups shown on
Pages 62E, 62J, 62M, 62P and 62Q
6L6730 MOTOR ASSEMBLY--S.A.E. Opposite Standard Engine Rotation--Type 2
Part of 6L2803, 6L2802, 6L8417, 7L6913 and 7L6915 Groups shown on
Pages 62G, 62L, 62N, 62R and 63
3H3171 and 3H3170 Air Motor parts are shown on Pages 67 and 68
c105480 UE034171
6L6731 MOTOR AS-AIR Parts scheme
  For full view, you need register

Parts for your D379A MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  3H-3170 [1] MOTOR  
    (SAE OPPOSITE STANDARD ENGINE ROTATION)
    -OR-
  3H-3171 Y [1] MOTOR  
    (SAE STANDARD ENGINE ROTATION)
    (SEE SEPARATE ILLUSTRATION)
  5K-1770 [1] SEAL  
  0S-1618 [8] BOLT  
  3B-4505 [8] LOCKWASHER  
  9F-7216 [1] SCREW  
  9F-7215 [1] RING  
  7F-5452 [1] SPRING  
  [1] STOP  
  4B-1273 [1] SCREW  
    (PARTS OF DRIVE ASSEM. 1L7398 AND 1L7340)
  1N-8063 [1] CAP  
  1N-8062 [1] BEARING  
    (PARTS OF HOUSING ASSEM. 5L5507)
  1L-7398 [1] DRIVE ASSEM. (BENDIX)  
    (SAE OPPOSITE STANDARD ENGINE ROTATION)
    -OR-
  1L-7340 [1] DRIVE ASSEM. (BENDIX)  
    (SAE STANDARD ENGINE ROTATION)
  5L-5507 [1] HOUSING ASSEM.  
  Y   SEPARATE ILLUSTRATION
 

#UE0341710253
 

4N-4985: CHANGEOVER GP

4N4985 AIR START CHANGEOVER GROUP--S.A.E. Standard Engine Rotation--Field Installation
FOR USE WITH 6L6731 MOTOR ASSEMBLY SHOWN ON PAGES 66A AND 66B
c149286 UE034171
4N4985 CHANGEOVER GP Parts scheme
  For full view, you need register

Parts for your D379A MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4N-9566 [1] SHAFT  
2. 4N-9567 [1] KEY  
3. 9F-5975 [8] BOLT  
4. 6H-3977 [1] SEAL  
5. 8F-8882 [1] SEAL  
6. 4N-4398 [1] PISTON ASSEM.  
    (Includes)
7. 4N-4399 [1] RING  
8. 4N-4404 [1] SEAT  
9. 4N-4405 [1] CLUTCH ASSEM.  
10. 4N-4406 [1] HOUSING ASSEM.  
    (Includes)
11. 2B-4602 [1] PLUG  
  4N-4408 [1] OILER  
12. 4N-4407 [1] BUSHING  
13. 4N-4403 [1] SPRING  
14. 4N-4400 [1] RING  
15. 4N-4402 [1] SPACER  
16. 052-0512 [1] RETAINER  
17. 0S-1616 [12] BOLT  
  3B-4504 [12] LOCKWASHER  
18. 4N-9565 [1] COVER  
19. 4N-3411 [1] VALVE  
20. 4N-3410 [1] VALVE  
21. 4N-4393 [1] SEAL  
22. 4N-9568 [1] GEAR (drive-30 teeth)  
 

#UE0341710254
 

4N-6019: CHANGEOVER GP

4N6019 AIR START CHANGEOVER GROUP--Field Installation--S.A.E. Opposite Standard Engine Rotation
FOR USE WITH 6L6731 MOTOR ASSEMBLY SHOWN ON PAGES 66A AND 66B
c149287 UE034171
4N6019 CHANGEOVER GP Parts scheme
  For full view, you need register

Parts for your D379A MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4N-9566 [1] SHAFT  
2. 4N-9567 [1] KEY  
3. 9F-5975 [8] BOLT  
4. 6H-3977 [1] SEAL  
5. 8F-8882 [1] SEAL  
6. 4N-4398 [1] PISTON ASSEM.  
    (Includes)
7. 4N-4399 [1] RING  
8. 4N-4404 [1] SEAT  
9. 4N-9569 [1] CLUTCH ASSEM.  
10. 4N-4406 [1] HOUSING ASSEM.  
    (Includes)
11. 2B-4602 [1] PLUG  
  4N-4408 [1] OILER  
12. 4N-4407 [1] BUSHING  
13. 4N-4403 [1] SPRING  
14. 4N-4400 [1] RING  
15. 4N-4402 [1] SPACER  
16. 052-0512 [1] RETAINER  
17. 0S-1616 [12] BOLT  
  3B-4504 [12] LOCKWASHER  
18. 4N-9565 [1] COVER  
19. 4N-3411 [1] VALVE  
20. 4N-3410 [1] VALVE  
21. 4N-4393 [1] SEAL  
22. 4N-9568 [1] GEAR (drive 30 teeth)  
 

#UE0341710255
 

3H-3171: LUG

3H3171 AIR MOTOR
Part of 5L1750 and 6L6731 Air Starting Motor Assemblies shown on Pages 66, 66A and 66B
c100806 UE034171
3H3171 LUG Parts scheme
  For full view, you need register

Parts for your D379A MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  7L-7465 [5] VANE  
  7F-5143 [1] ROTOR  
  7F-5136 [1] PLATE ASSEM  
  7F-5138 [1] DOWEL (.437" THICK)  
  7F-5139 [1] DOWEL (.50" THICK)  
  2F-4547 [4] DOWEL (.25" DIA)  
    (PARTS OF PLATE ASSEM 7F5136)
  3H-1660 [2] RING  
  7F-5421 [2] SHIM (.002" THICK)  
  7F-5422 [2] SHIM (.003" THICK)  
  7F-5423 [1] SHIM (.005" THICK)  
  4B-4731 [1] BEARING  
  7F-5154 [1] NUT  
  7F-5155 [1] LOCKWASHER  
  7F-5156 [1] GASKET  
  7F-9504 [3] PLUG  
  2B-2695 [4] BOLT  
  3B-4505 [4] LOCKWASHER  
  2L-6221 [1] COVER  
  4B-3388 [8] BOLT  
  3B-4505 [8] LOCKWASHER  
  7F-5145 [1] HOUSING  
  7F-6284 [1] RACE  
  7F-6283 [1] BEARING  
  2L-6220 [1] HOUSING  
  7F-5157 [1] GASKET  
  7F-5171 [1] WASHER  
  7F-5159 [1] RING  
  7F-5164 [7] BOLT  
  3B-4505 [7] LOCKWASHER  
  6L-6705 [1] COVER  
  0S-1614 [3] BOLT  
  3B-4504 [3] LOCKWASHER  
  7F-5158 [1] PLATE  
  1B-8710 [2] KEY  
  7F-5151 [1] SHAFT  
  7F-5153 [1] BEARING  
  7F-5149 [1] GEAR  
  7F-5162 [1] NUT  
  7F-5161 [1] LOCKWASHER  
  7F-5152 [1] RING  
  7F-5154 [1] NUT  
  7F-5155 [1] LOCKWASHER  
  7F-5148 [1] GEAR  
  5B-1975 [1] BEARING ASSEM.  
  5B-1974 [1] RACE  
  7F-5141 [1] PLATE ASSEM.  
  7F-5138 [1] DOWEL (.437" DIA.)  
  7F-5139 [1] DOWEL (.50" DIA.)  
  2F-4547 [4] DOWEL (.25" DIA.)  
    (PARTS OF PLATE ASSEM. 7F5141)
  1B-2719 [8] BOLT  
  3B-4505 [8] LOCKWASHER  
  7F-5160 [1] GASKET  
 

#UE0341710256
 

3H-3170: MOTOR GP-AIR STARTING

3H3170 AIR MOTOR
Part of 5L1749 and 6L6730 Air Starting Motor Assemblies shown on Pages 66, 66A and 66B
c104613 UE034171
3H3170 MOTOR GP-AIR STARTING Parts scheme
  For full view, you need register

Parts for your D379A MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  2L-6220 [1] HOUSING  
  2F-0808 [4] SCREW  
  7F-5143 [1] ROTOR  
  7L-7465 [5] VANE  
  7F-5136 [1] PLATE ASSEM.  
  7F-5138 [1] DOWEL (.43" DIA.)  
  7F-5139 [1] DOWEL (50" DIA.)  
  2F-4547 [4] PIN (.25" DIA.)  
    (PARTS OF PLATE ASSEM. 7F5136)
  3H-1660 [1] RING  
  4B-4731 [1] BEARING  
  7F-9504 [3] PLUG (D)  
  7F-5154 [1] NUT  
  7F-5155 [1] LOCKWASHER  
  7F-5421 [2] SHIM (.002")  
  7F-5422 [2] SHIM (.003")  
  7F-5423 [1] SHIM (.005")  
  2B-2695 [4] BOLT  
  3B-4505 [4] LOCKWASHER  
  2L-6221 [1] COVER  
  7F-5156 [1] GASKET  
  4B-3388 [8] BOLT  
  3B-4505 [8] LOCKWASHER  
  7F-5149 [1] GEAR  
  7F-6284 [1] RACE  
  7F-6283 [1] BEARING ASSEM.  
  7F-5157 [1] GASKET  
  6L-6705 [1] COVER  
  7F-5164 [7] BOLT  
  3B-4505 [7] LOCKWASHER  
  7F-5158 [1] PLATE  
  0S-1614 [3] BOLT  
  3B-4504 [3] LOCKWASHER  
  7F-5153 [1] BEARING  
  1B-8710 [2] KEY  
  7F-5151 [1] SHAFT  
  7F-5162 [1] NUT  
  7F-5161 [1] LOCKWASHER  
  7F-5159 [1] RING  
  7F-5171 [1] WASHER  
  7F-5154 [1] NUT  
  7F-5155 [1] LOCKWASHER  
  5B-1975 [1] BEARING ASSEM.  
  7F-5152 [1] RING  
  7F-5148 [1] GEAR  
  5B-1974 [1] RACE  
  3H-1660 [1] RING  
  7F-5160 [1] GASKET  
  7F-5141 [1] PLATE ASSEM.  
  7F-5138 [1] DOWEL (.43" DIA.)  
  7F-5139 [1] DOWEL (50" DIA.)  
  2F-4547 [4] PIN (.25" DIA.)  
    (PARTS OF PLATE ASSEM. 7F5141)
  1B-2719 [6] BOLT  
  3B-4505 [8] LOCKWASHER  
  7F-5145 [1] HOUSING  
 

#UE0341710257
 

6L-3733: FLEXIBLE EXHAUST FITTING GROUP

6L3733 FLEXIBLE EXHAUST FITTING GROUP--Horizontal
FOR USE WITH 16-8 INCH MUFFLER ON TURBOCHARGED-AFTERCOOLED ENGINE
Only separate parts serviced
When complete Group is required order 5L6797 plus 1-5L7520 Elbow
c76351 UE034171
6L3733 FLEXIBLE EXHAUST FITTING GROUP Parts scheme
  For full view, you need register

Parts for your D379A MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  5L-7520 [1] ELBOW  
    (Exhaust Extension)
  5L-3891 [1] FLANGE  
  0L-1329 [8] BOLT  
  1B-5357 [8] NUT  
  5L-3773 [1] GASKET  
  5L-6297 [1] ADAPTER  
  0S-1587 [8] BOLT  
  1B-5357 [8] NUT  
  5L-3773 [1] GASKET  
    (Mounted on Turbocharger Pipe)
 

#UE0341710258
 

5L-6797: FITTING GP-EXHAUST

5L6797 FLEXIBLE EXHAUST FITTING GROUP
FOR USE WITH 16-8 INCH MUFFLER
c210806 UE034171
5L6797 FITTING GP-EXHAUST Parts scheme
  For full view, you need register

Parts for your D379A MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  5L-7520 H [1] ELBOW  
    (Exhaust Extension)
  5L-3891 [1] FLANGE  
  031-0228 C [8] BOLT  
  1B-5357 [8] NUT  
  5L-3773 [1] GASKET  
  5L-6297 [1] ADAPTER  
  5P-5855 C [8] BOLT  
  1B-5357 [8] NUT  
  5L-3773 [1] GASKET  
    (Mounted on Turbocharger Pipe)
  C   INDICATES CHANGE
  H   NOT PART OF 5L6797 EXHAUST FITTING GROUP
 

#UE0341710259
 

6L-3734: FLEXIBLE EXHAUST FITTING GROUP

6L3734 FLEXIBLE EXHAUST FITTING GROUP--Horizontal
FOR USE WITH 24-12 INCH MUFFLER ON TURBOCHARGED-AFTERCOOLED ENGINE
Only separate parts serviced
When complete Group is required order 5L6796 plus 1--5L6954 Elbow
c76352 UE034171
6L3734 FLEXIBLE EXHAUST FITTING GROUP Parts scheme
  For full view, you need register

Parts for your D379A MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  5L-6954 [1] ELBOW  
  5L-6900 [1] FLANGE  
  5L-6943 [1] GASKET  
  0S-1583 [12] BOLT  
  3B-4512 [12] LOCKWASHER  
  5L-3773 [1] GASKET  
  0S-1587 [8] BOLT  
  1B-5357 [8] NUT  
  5L-6297 [1] ADAPTER  
 

Information:

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 Group Available
1982/08/25
New Air Starting Motor Has A Slip-Clutch Type Drive Gear
1983/10/26
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
Improved Remanufactured Electric Starting Motors are Now Available {1453}
2003/11/01
Special Instruction
Installation of Electric Starting Motors{1453}
Installation of Electric Starting Motors{1453}
Caterpillar PRELUB<SUP>&reg;</SUP> Diagnostics{1469}
Caterpillar PRELUB® Diagnostics{1469}
Solenoid (Starting Motor) &minus; 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<SUP>&reg;</SUP> 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<SUP>&reg;</SUP> 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<SUP>&reg;</SUP> Products {1453}
Procedure to Replace Drive Assembly of Starter Motor On All Cat® Products {1453}
Specifications
Prelube Pump
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
Starter Motor
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
Starter Solenoids
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
Pressure Regulating Valve For Air Starting Motor
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
Air Starting Motor
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
Hydraulic Starting Motor
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
Charging Pump For Hydraulic Starting
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
Hand Pump For Hydraulic Starter
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
Pressure Accumulator For Hydraulic Starter
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
Starting Motor
37-MT, 41-MT, and 42-MT Series Starting Motors
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
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
Prelubrication Oil Pump (D399)
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
Sump Pump
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
Electric Starting Motors
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
Air Starter
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
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 Group Available{1451}
1982/07/19
New Air Starting Motor Has A Slip-Clutch Type Drive Gear{1451}
1983/10/17
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
Air Starter Relay Valve Improved{1462}
1991/06/24

Caterpillar Parts SIS Catalog D379A :

AIR RECEIVER GP
6F-7691 AIR RECEIVER GP
VALVE GP-PRESSURE REDUCING
1L-2073 VALVE GP-PRESSURE REDUCING
SILENCER GP-AIR STARTING
7L-6912 SILENCER GP-AIR STARTING
VALVE GP-AIR STARTING
7L-6911 VALVE GP-AIR STARTING
AIR STARTING OILER
8F-0256 AIR STARTING OILER
VALVE GP-WHISTLE
3L-9922 VALVE GP-WHISTLE
MOTOR GP-AIR STARTING
7L-6915 MOTOR GP-AIR STARTING
LUBRICATOR GP-AIR MOTOR
4N-7556 LUBRICATOR GP-AIR MOTOR
MOTOR AS-AIR
6L-6731 MOTOR AS-AIR
MOTOR AS-AIR
6L-6731 MOTOR AS-AIR
CHANGEOVER GP
4N-4985 CHANGEOVER GP
CHANGEOVER GP
4N-6019 CHANGEOVER GP
LUG
3H-3171 LUG
MOTOR GP-AIR STARTING
3H-3170 MOTOR GP-AIR STARTING
FLEXIBLE EXHAUST FITTING GROUP
6L-3733 FLEXIBLE EXHAUST FITTING GROUP
FITTING GP-EXHAUST
5L-6797 FITTING GP-EXHAUST

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