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2Y1921 STARTING ELECTRIC MOTOR 2Y1920 Motor parts are shown on Page 69 D6C TRACK-TYPE TRACTOR




ELECTRICAL AND STARTING SYSTEM

STARTING MOTOR GP
 

#ZEBP05540080
 

2Y-1921: STARTING ELECTRIC MOTOR

2Y1921 STARTING ELECTRIC MOTOR
2Y1920 Motor parts are shown on Page 69
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Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4H-7869 [1] GASKET  
2. 2Y-1920 Y [1] MOTOR ASSEM.  
    (Separate Illustration)
3. 3B-4510 [3] LOCKWASHER  
4. 8S-2332 [3] BOLT  
5. 2Y-2238 [1] WIRE ASSEMBLY  
  2L-8052 [2] TERMINAL  
  4S-8784 H [4] WIRE  
  H   ORDER BY THE DECIMETRE
  Y   SEPARATE ILLUSTRATION
 

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2Y-1920: STARTING MOTOR ASSEMBLY

2Y1920 STARTING MOTOR ASSEMBLY
Part of 2Y1921 Starting Motor shown on Page 68
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Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2Y-2373 [1] PINION  
2. 2Y-2374 [1] BAFFLE  
3. 2Y-2375 [1] SUPPORT ASSEM.  
4. 2Y-2376 [1] SEAL  
5. 2Y-2377 [1] BEARING  
6. 2Y-2378 [1] SLEEVE  
7. 2Y-2379 [1] BEARING  
8. 2Y-2380 [1] CLUTCH ASSEM.  
9. 2Y-2384 [1] ARMATURE ASSEM.  
10. 2Y-2385 [1] BEARING  
11. 2Y-2386 [1] COIL ASSEM.  
12. 2Y-2387 [1] ROD ASSEM.  
13. 2Y-2390 [8] BOLT  
14. 2Y-2391 [1] STUD  
15. 2Y-2392 [1] SUPPORT ASSEM.  
16. 2Y-2393 [1] TERMINAL (Pos.)  
17. 2Y-2394 [1] TERMINAL (Neg.)  
18. 2Y-2396 [1] COVER  
19. 2Y-2397 [1] SWITCH ASSEM.  
20. 2Y-2398 [1] SWITCH ASSEM.  
21. 2Y-2399 [3] STUD  
22. 2Y-2382 [2] BOLT  
23. 2Y-2383 [1] SEAT  
24. 2Y-2858 [1] BUSHING  
    THE FOLLOWING REPAIR KITS ARE AVAILABLE
  2Y-2400 KIT  
    (Includes Nuts, Bushings, Insulators, Lock and Washers)
  2Y-1799 KIT (4 Brushes)  
  2Y-2402 (for Cover)  
    Includes Bolt, Washer, Seal and "O" Ring)
 

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2Y-1919: ALTERNATOR GROUP

2Y1919 ALTERNATOR GROUP
2Y1918 Alternator Group parts are shown on Page 71
Serial No. 23U268 to 23U286
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Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2P-3208 [ 2] BOLT  
2. 2Y-1951 [ 1] BRACKET  
3. 1B-2886 [ 1] BOLT  
4. 3B-4508 [ 2] LOCKWASHER  
5. 1D-4719 [ 2] NUT  
6. 2A-1531 [ 1] BOLT  
7. 8M-4791 [ 1] WASHER  
8. 2Y-1918 Y [ 1] ALTERNATOR GROUP  
    (Separate Illustration)
    Separate Illustration
 

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2Y-2936: ALTERNATOR GROUP

2Y2936 ALTERNATOR GROUP
- 28 Volt, 17 Ampere
2Y2940 Alternator Assembly parts are shown on Page 72
Serial No. 23U287 - Up
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Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2Y-2940 Y [ 1] ALTERNATOR, GR  
2. 2Y-2931 [ 1] SUPPORT  
3. 1A-5964 [ 1] BOLT  
4. 3B-4506 [ 3] LOCKWASHER  
5. 1D-4719 [ 1] NUT  
6. 3B-4508 [ 2] LOCKWASHER  
7. 1A-5822 [ 1] BOLT  
8. 0S-1571 [ 2] BOLT  
9. 2Y-2934 [ 1] STRAP  
10. 2Y-1948 [ 1] SPACER  
  0S-1585 [ 1] BOLT  
11. 1D-4716 [ 1] NUT  
  3B-4505 [ 1] LOCKWASHER  
12. 1A-9579 [ 1] BOLT  
  4B-4277 [ 2] WASHER  
    SEPARATE ILLUSTRATION
 

#ZEBP05540084
 

2Y-1918: ALTERNATOR GROUP

2Y1918 ALTERNATOR GROUP
Part of 2Y1919 Alternator shown on Page 70. Serial Number 23U268 and 23U286
For Field Conversion 2Y1918 - Alternator order 2Y2962 listed on Page 68
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Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2Y-1681 [ 1] COVER ASSEM.  
2. 2Y-1683 [ 1] BRUSHES SUPPORT ASSEM.  
  2Y-2551 [ 2] BRUSH AND SPRING  
3. 2Y-1686 [ 1] DISSIPATOR ASSEM.  
4. 2Y-1688 [ 1] DISSIPATOR ASSEM.  
5. 3B-4128 [ 1] BEARING BALL  
6. 2Y-1690 [ 1] ROTOR ASSEM.  
7. 2Y-1691 [ 1] STATOR ASSEM.  
8. 2Y-1692 [ 1] COVER ASSEM.  
9. 2Y-1694 [ 1] SEAL  
10. 2Y-1695 [ 1] SEAL  
11. 2Y-1696 [ 1] GASKET  
12. 2Y-1687 [ 1] BEARING  
13. 2Y-1916 [ 1] PULLEY  
14. 2Y-1698 [ 1] NUT  
15. 2Y-1699 [ 1] FAN ASSEM.  
16. 2Y-1700 [ 4] SCREW  
17. 2Y-2018 [ 1] DIODE  
  2Y-1701 ALTERNATOR KIT  
    (Consists of) (PACKAGE, WASHER, RING INSULATOR, SCREW, GASKET RIVET, PLATE, NUT, LOCKWASHER, LWASH- TOOTH)
 

#ZEBP05540085
 

2Y-2940: ALTERNATOR GROUP

2Y2940 ALTERNATOR GROUP
- 28 Volt 17 Amp.
Part of 2Y2936 Alternator shown on Page 70
Serial Numbers 23U287 - Up
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Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 2Y-3316 [ 1] COVER ASSEM.  
  2Y-3330 [ 1] BRUSHES SUPPORT ASSEM.  
  2Y-3336 [ 1] RECTIFIER ASSEM.  
  2Y-3331 [ 3] DIODE (Negative)  
  2Y-3335 [ 1] BREATHER  
2. 2Y-3317 [ 1] STATOR  
3. 2Y-3318 [ 1] DISC  
4. 2Y-3319 [ 1] FAN  
5. 2Y-3321 [ 1] BEARING  
6. 2Y-3322 [ 1] ROTOR  
7. 2Y-3323 [ 1] COVER ASSEM.  
8. 2Y-3324 [ 1] BEARING  
9. 2Y-3337 [ 1] PULLEY  
10. 2Y-3325 [ 4] SCREW  
11. 3B-4502 [ 4] LOCKWASHER  
12. 2Y-3326 [ 4] WASHER  
13. 2Y-3329 [ 1] KEY  
14. 2Y-3344 [ 1] LOCKWASHER  
15. 2Y-3362 [ 1] NUT  
16. 2Y-3392 [ 1] CAPACITOR ASSEM.  
    THE FOLLOWING SERVICE REPAIR KITS ARE AVAILABLE:
1. 2Y-3327 ROTOR KIT  
1. 2Y-3328 BRUSH AND SPRING KIT  
1. 2Y-3436 SCREW KIT (D+)  
1. 2Y-3333 SCREW KIT (B+)  
1. 2Y-3334 SCREW KIT (D-)  
1. 2Y-3437 SCREW KIT (DF)  
1. 2Y-3438 SCREW KIT RECTIFIER MTG  
 

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2Y-2220: BATTERY AND WIRING

2Y2220 BATTERY AND WIRING-PART 1 OF 2
- 24 Volt - Right Side
2Y1262 Regulator Assembly and 7H7290 Switch Assembly parts are shown on Pages 84 and 85
Serial Number 23U268 to 23U286. See Page 78 for Wiring Diagram
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Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7S-2055 [ 1] BRACKET  
2. 0L-1351 [ 1] BOLT  
3. 3B-4506 [ 9] LOCKWASHER  
4. 2H-3855 [ 1] BOLT  
5. 3B-4508 [ 1] LOCKWASHER  
6. 1P-1010 [ 1] CABLE ASSEM.  
7. 0S-0509 [ 6] BOLT  
8. 3S-8642 [ 2] LAMP ASSEM  
9. [ 1] HARNESS ASSEM.  
10. Y [ 1] HARNESS ASSEM.  
11. 1H-5166 [ 4] CLIP  
12. 1H-5165 [ 2] CLIP  
13. Y [ 1] HARNESS ASSEM.  
14. Y [ 1] HARNESS ASSEM.  
15. 2N-7744 [ 1] SWITCH  
16. 3B-8822 [ 1] ELBOW  
17. 2Y-1999 [ 1] WIRE ASSEM.  
18. 4S-1962 [ 3] CLIP  
19. 4K-5803 [ 3] TIE  
20. 5S-1680 [ 2] BOX  
21. 2Y-1960 [ 1] HARNESS ASSEM.  
22. 2B-2938 [ 2] PIN  
23. 3B-4617 [ 2] COTTER PIN  
24. 1H-7365 [ 2] HANDLE  
25. 9M-0737 [ 2] COVER ASSEM.  
26. 1J-4384 [ 2] PIN  
27. 3B-4615 [ 2] COTTER PIN  
28. 1B-9920 [ 2] SPRING  
29. 1H-7366 [ 2] ROD  
30. 5S-7219 [ 2] BATTERY  
    SEPARATE ILLUSTRATION
 

#ZEBP05540087
 

2Y-2220: BATTERY AND WIRING

2Y2220 BATTERY AND WIRING-PART 2 OF 2
- 24 Volt - Top View
2Y2188, 2Y2186 and 2Y2189 Harness parts are shown on Pages 80, 82 and 83
Serial Number 23U268 and 23U286. See Page 78 for Wiring Diagram
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Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1H-5166 [ 4] CLIPE  
2. 0T-0102 [ 2] BOLT  
3. 3B-4506 [ 11] LOCKWASHER  
4. 2Y-2219 [ 1] HASNESS ASSEM.  
5. 7H-7290 Y [ 1] SWITCH ASSEM.  
6. 9H-5995 C [ 1] PLATE  
7. 8M-2772 [ 1] CLIP  
8. 0S-0509 [ 28] BOLT  
9. 2M-0287 [ 3] CLIP  
10. 0S-1624 [ 2] BOLT  
11. 3B-4510 [ 2] LOCKWASHER  
12. 7S-6402 [ 1] SWITCH  
13. 5M-2555 [ 1] CIRCUIT BREAKER  
14. 5M-6668 [ 2] BOLT  
15. 1F-7307 [ 1] AMMETER  
16. 4S-6313 [ 1] WIRE ASSEM.  
17. 4S-8067 [ 1] WIRE ASSEM.  
18. 9M-5870 [ 1] GROMMET  
19. 1M-4543 [ 2] GROMMET  
20. 8S-7713 [ 1] SWITCH  
21. 2Y-1262 Y [ 1] REGULATOR  
    SEPARATE ILLUSTRATION
    INDICATES CHANGE
 

#ZEBP05540088
 

2Y-2220: BATTERY AND WIRING

2Y2220 BATTERY AND WIRING-PART 1 OF 2
- 24 Volt - Right Side
2Y2930 Regulator Assembly and 7H7290 Switch Assembly parts are shown on Pages 84 and 85
Serial Number 23U287 - Up. See Page 79 for Wiring Diagram
sp568 ZEBP0554
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Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1H-5166 [ 4] CLIP  
2. 0T-0102 [ 2] BOLT  
3. 3B-4506 [ 11] LOCKWASHER  
4. 2Y-2219 [ 1] HARNESS ASSEM.  
5. 7H-7290 Y [ 1] SWITCH ASSEM.  
6. 8H-8648 [ 1] PLATE  
7. 8M-2772 [ 1] CLIP  
8. 0S-0509 [ 28] BOLT  
9. 2M-0287 [ 3] CLIP  
10. 0S-1624 [ 2] BOLT  
11. 3B-4510 [ 2] LOCKWASHER  
12. 7S-6402 [ 1] SWITCH  
13. 5M-2555 [ 1] CIRCUIT BRAKER  
14. 5M-6668 [ 2] BOLT  
15. 1F-7307 [ 1] AMMETER  
16. 4S-6313 [ 1] WIRE ASSEM.  
17. 4S-8067 [ 1] WIRE ASSEM.  
18. 9M-5870 [ 1] GROMMET  
19. 1M-4543 [ 2] GROMMET  
20. 8S-7713 [ 1] SWITCH  
21. 2Y-2930 C Y [ 1] REGULATOR ASSEM.  
    SEPARATE ILLUSTRATION
  Y   SEPARATE ILLUSTRATION
    INDICATES CHANGE
 

#ZEBP05540089
 

2Y-2220: BATTERY AND WIRING

2Y2220 BATTERY AND WIRINGPART 2 OF 2
- 24 Volt - Top View
2Y3144, 2Y3074 and 2Y3145 Harness parts are shown on Pages 81, 82 and 83
Serial Number 23U287 - Up. See Page 79 for Wiring Diagram
sp569 ZEBP0554
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Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 7S-2055 [ 1] BRACKET  
2. 0L-1351 [ 1] BOLT  
3. 3B-4506 [ 9] LOCKWASHER  
4. 2H-3855 [ 1] BOLT  
5. 3B-4508 [ 1] LOCKWASHER  
6. 1P-1010 [ 1] CABLE ASSEMBLY  
7. 0S-0509 [ 6] BOLT  
8. 3S-8642 [ 2] LAMP ASSEM.  
9. [ 1] HARNESS ASSEM.  
10. 2Y-3074 C Y [ 1] HARNESS ASSEM.  
11. 1H-5166 [ 4] CLIP  
12. 1H-5165 [ 2] CLIP  
13. 2Y-3145 Y C [ 1] HARNESS ASSEM.  
14. 2Y-3144 Y C [ 1] HARNESS ASSEM.  
15. 1B-9920 [ 2] SPRING  
16. 1H-7366 [ 2] ROD  
17. 5S-7219 [ 2] BATTERY  
18. 4S-1962 [ 3] CLIP  
19. 4K-5803 [ 3] TIE  
21. 2Y-1960 [ 1] HARNESS ASSEM.  
22. 2B-2938 [ 2] PIN  
23. 3B-4617 [ 2] COTTER PIN  
24. 1H-7365 [ 2] HANDLE  
25. 9M-0737 [ 2] COVER ASSEM.  
26. 1J-4384 [ 2] PIN  
27. 3B-4615 [ 2] COTTER PIN  
    SEPARATE ILLUSTRATION.
  Y   SEPARATE ILLUSTRATION
    INDICATES CHANGE
 

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
Special Instruction
Current Draw Of Electric Starting Motors{1453}
Current Draw Of Electric Starting Motors{1453}
Installation of Electric Starting Motors{1453}
Installation of Electric Starting Motors{1453}
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<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
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
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
Starting Motor
D6C TRACTOR 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
Service Magazine

Caterpillar Parts SIS Catalog D6C :

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