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3N1880 EXCITER AND REGULATOR ASSEMBLY--Part 2 of 2--Type 2 Part of 8L59 and 8L60 Generator Assemblies shown on Pages 309, 311, 319 and 321 D343




GENERATORS

GENERATOR GP
 

#UEG0873S0590
 

3N-1880: EXCITER AND REGULATOR ASSEMBLY

3N1880 EXCITER AND REGULATOR ASSEMBLY--Part 2 of 2--Type 2
Part of 8L59 and 8L60 Generator Assemblies shown on Pages 309, 311, 319 and 321
c203689 UEG0873S
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Parts for your D343 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4B-1220 [20] SCREW  
2. 9B-7233 [20] LOCKWASHER  
3. 8L-4863 [2] VOLTAGE SUPPRESSOR  
4. 2N-8489 [1] BOLT  
  4B-4274 C [2] WASHER  
5. 4L-1250 C [1] NUT  
7. 3N-1883 [1] REACTOR ASSEM.  
8. 6L-6622 [1] REACTOR  
9. 7L-0331 [1] BRACKET  
10. 8L-5823 [1] RELAY  
11. 8L-5824 [1] BRACKET  
12. 7L-2770 [1] RECTIFIER  
13. 8L-5478 [2] GROMMET  
14. 3N-3466 C [2] SPACER  
15. 2N-7149 [1] REACTOR ASSEM.  
16. 6L-7003 [2] POTENTIOMETER  
17. 3N-4303 C [1] TRANSFORMER  
18. 6L-8401 [1] POTENTIOMETER  
19. 7L-7812 [1] CHOKE  
20. 7L-7400 [4] CAPACITOR  
21. 2N-4692 [1] STRAP  
22. 8L-4868 [1] VOLTAGE SUPPRESSOR  
23. 1N-5036 [1] GUARD ASSEM.  
    (Includes)
  6L-6421 [1] LABEL  
  C   INDICATES CHANGE
 

#UEG0873S0591
 

3N-1880: EXCITER AND REGULATOR ASSEMBLY

3N1880 EXCITER AND REGULATOR ASSEMBLY--Part 1 of 2--Type 3
Part of 8L59 and 8L60 Generator Assemblies shown on Pages 309, 311, 319 and 321
c176493 UEG0873S
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Parts for your D343 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3N-2156 [12] SCREW  
  8L-5827 [12] NUT  
2. 9B-7233 [32] LOCKWASHER  
3. 7S-4346 [7] SCREW  
4. 8F-1434 [11] LOCKWASHER  
5. 1H-4336 [3] SCREW  
6. 8L-5832 [4] NUT  
7. 2H-8533 [1] SCREW  
8. 2N-4766 [1] STRIP (marker)  
9. 2N-4765 [1] STRIP (terminal)  
10. 7S-4338 [6] SCREW  
11. 3N-1882 [1] REACTOR ASSEM.  
12. 3N-1884 [1] WIRING HARNESS  
13. 1N-5034 [1] SOCKET ASSEM.  
14. 2N-5764 [1] RESISTOR ASSEM.  
15. 5N-6172 C [3] CAPACITOR  
16. 5N-7035 C [1] BRACKET  
17. 4B-1221 [4] SCREW  
18. 2N-3474 [4] SCREW  
  8L-5853 [2] NUT  
  3L-8187 [4] LOCKWASHER  
19. 7L-0286 [1] REGULATOR ASSEM.  
20. 8M-8626 [4] SCREW  
21. 3D-9799 [2] SCREW  
22. 3N-1885 [1] BLOCK  
23. 3K-1649 [1] BOARD (terminal)  
24. 3N-9364 [1] STRIP (marker)  
25. 3N-9434 [2] SUPPRESSOR ASSEM.  
26. 7S-1201 [2] SCREW  
  4B-2043 [2] NUT  
27. 6L-7700 [1] RECTIFIER  
28. 1S-7443 [1] SCREW  
  6L-7161 [1] NUT  
  7F-9223 [1] LOCKWASHER  
29. 7L-6750 [3] FUSE  
30. 6L-3600 [2] RECTIFIER  
31. 3N-9447 [2] HEAT SINK  
32. 3N-9445 [1] HEAT SINK  
33. 6L-3590 [1] RECTIFIER  
34. 4B-1220 [2] SCREW  
35. 3N-4471 [1] INSULATOR  
36. 7H-3711 [3] NUT  
  C   INDICATES CHANGE
 

#UEG0873S0592
 

3N-1880: EXCITER AND REGULATOR ASSEMBLY

3N1880 EXCITER AND REGULATOR ASSEMBLY--Part 2 of 2--Type 3
Part of 8L59 and 8L60 Generator Assemblies shown on Pages 309, 311, 319 and 321
c176494 UEG0873S
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Parts for your D343 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4B-1220 [20] SCREW  
2. 9B-7233 [20] LOCKWASHER  
3. 8L-4863 [2] VOLTAGE SUPPRESSOR  
4. 2N-8489 [1] BOLT  
  4B-4274 [2] WASHER  
5. 4L-1250 [1] NUT  
7. 3N-1883 [1] REACTOR ASSEM.  
8. 6L-6622 [1] REACTOR  
9. 7L-0331 [1] BRACKET  
10. 8L-5823 [1] RELAY  
11. 8L-5824 [1] BRACKET  
12. 7L-2770 [1] RECTIFIER  
13. 8L-5478 [2] GROMMET  
14. 3N-3466 [2] SPACER  
15. 2N-7149 [1] REACTOR ASSEM.  
16. 6L-7003 [2] POTENTIOMETER  
17. 3N-4303 [1] TRANSFORMER  
18. 6L-8401 [1] POTENTIOMETER  
19. 7L-7812 [1] CHOKE  
20. 5N-6170 C [4] CAPACITOR  
21. 5N-7033 C [1] BRACKET  
22. 8L-4868 [1] VOLTAGE SUPPRESSOR  
23. 1N-5036 [1] GUARD ASSEM.  
    (Includes)
  6L-6421 [1] LABEL  
  C   INDICATES CHANGE
 

#UEG0873S0593
 

5N-0008: REGULATOR AS

5N8 REGULATOR ASSEMBLY
Part of 5N23 Generator Assembly shown on Pages 323 and 325
c137998 UEG0873S
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Parts for your D343 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3N-4206 [1] REGULATOR ASSEM.  
2. 8M-8626 [4] SCREW  
  4B-2043 [4] NUT  
3. 9B-7233 [8] LOCKWASHER  
4. 9F-9327 [6] SCREW  
5. 8F-1434 [12] LOCKWASHER  
6. 3N-2044 [2] CLAMP ASSEM.  
7. 8L-5832 [4] NUT  
8. 2N-7151 [1] CAPACITOR  
9. 3N-2045 [2] CLAMP ASSEM.  
10. 7L-7400 [1] CAPACITOR  
11. 3N-2046 [1] RESISTOR ASSEM.  
12. 3N-2047 [1] RESISTOR (Top)  
  3N-2048 [1] RESISTOR (Bottom)  
13. 3N-2049 [1] CAPACITOR ASSEM.  
14. 5M-5845 [2] SCREW  
15. 3N-2055 [1] STRIP (Terminal Marker)  
16. 3N-2056 [1] STRIP (Terminal)  
17. 3N-2053 [1] WIRING HARNESS  
18. 3N-2043 [1] REACTOR ASSEM.  
19. 3N-2052 [1] STRIP (Insulator)  
20. 3N-2051 [1] FUSE HOLDER  
21. 3N-2050 [1] FUSE (10 Amps)  
22. 5D-0853 [2] SCREW  
  4B-2041 [2] NUT  
  3L-8187 [2] LOCKWASHER  
23. 3N-2040 [1] RHEOSTAT ASSEM.  
24. 3N-2042 [1] VOLTAGE SUPPRESSOR  
25. 3N-2041 [1] RHEOSTAT ASSEM.  
26. 4B-1220 [2] SCREW  
27. 6L-7004 [1] POTENTIOMETER  
28. 3N-1479 [1] RECTIFIER ASSEM.  
29. 3N-1482 [1] RECTIFIER ASSEM. (Field)  
30. 3N-1481 [1] RECTIFIER ASSEM. (Cont.)  
31. 3D-9799 [2] SCREW  
 

#UEG0873S0594
 

3N-7751: REGULATOR AS

3N7751 REGULATOR ASSEMBLY
Part of 5N23 Generator Assembly shown on Pages 327, 327B & 327D
c217967 UEG0873S
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Parts for your D343 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5N-1848 C [1] REGULATOR ASSEM.  
2. 3N-1479 [1] RECTIFIER ASSEM.  
    (Includes)
3. 3N-1482 [1] RECTIFIER ASSEM. (field)  
4. 3N-1481 [1] RECTIFIER ASSEM. (cont.)  
5. 3N-4471 [1] INSULATOR  
6. 3N-2044 [2] CLAMP ASSEM.  
7. 8L-5832 [4] NUT  
8. 2N-7151 [1] CAPACITOR  
9. 3N-2045 [1] CLAMP ASSEM.  
10. 7L-7400 [1] CAPACITOR  
11. 3N-2046 [1] RESISTOR ASSEM.  
    (Includes)
12. 3N-2047 [1] RESISTOR  
  3N-2048 [1] RESISTOR (bottom)  
13. 3N-2049 [1] CAPACITOR ASSEM.  
14. 6L-7004 [1] POTENTIOMETER  
15. 3N-2055 [1] STRIP (terminal marker)  
16. 3N-2056 [1] STRIP (terminal)  
17. 3N-7749 [1] WIRING HARNESS  
18. 3N-2043 [1] REACTOR ASSEM.  
19. 5N-3959 C [1] LABEL (Indentity)  
20. 3N-2051 [1] FUSE HOLDER  
21. 3N-2050 [1] FUSE (10 amps)  
22. 3N-7750 [1] PROTECTOR  
  3N-7752 [2] SPACER  
23. 3N-2040 [1] RHEOSTAT ASSEM.  
24. 3N-2042 [1] VOLTAGE SUPPRESSOR  
25. 3N-2041 [1] RHEOSTAT ASSEM.  
    THE FOLLOWING REPAIR KIT IS AVAILABLE:
  3N-5536 [1] KIT (hardware)  
    (Includes Screws, Nuts, and Lockwashers)
  C   INDICATES CHANGE
 

#UEG0873S0595
 

5N-0009: REGULATOR ASSEMBLY

5N9 REGULATOR ASSEMBLY
Part of 5N24, 5N25 and 5N5 Generator Assemblies shown on Pages 329, 331, 335, 337 and 341
c117951 UEG0873S
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Parts for your D343 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. [1] REGULATOR ASSEM.  
2. [4] SCREW  
  [4] NUT  
3. [8] LOCKWASHER  
4. [6] SCREW  
5. [12] LOCKWASHER  
6. [2] CLAMP ASSEM.  
7. [4] NUT  
8. [1] CAPACITOR  
9. [2] CLAMP ASSEM.  
10. [1] CAPACITOR  
11. [1] RESISTOR ASSEM.  
12. [1] RESISTOR (Top)  
  [1] RESISTOR (Bottom)  
13. [1] CAPACITOR ASSEM.  
14. [2] SCREW  
15. [1] STRIP (Terminal Marker)  
16. [1] STRIP (Terminal)  
17. [1] WIRING HARNESS  
18. [1] REACTOR ASSEM.  
19. [1] STRIP (Insulator)  
20. [1] FUSE HOLDER  
21. [1] FUSE (10 Amps)  
22. [2] SCREW  
  [2] NUT  
  [2] LOCKWASHER  
23. [1] RHEOSTAT ASSEM.  
24. [1] VOLTAGE SUPPRESSOR  
25. [1] RHEOSTAT ASSEM.  
26. [2] SCREW  
27. [1] POTENTIOMETER  
28. [1] RECTIFIER ASSEM.  
29. [1] RECTIFIER ASSEM. (Field)  
30. [1] RECTIFIER ASSEM. (Cont.)  
31. C [2] SCREW  
  C   INDICATES CHANGE
 

#UEG0873S0596
 

3N-7748: REGULATOR AS

3N7748 REGULATOR ASSEMBLY
Part of 5N24 and 5N25 Generator Assemblies shown on Pages 333, 333D, 333F, 339, 339B and 339D
c146555 UEG0873S
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Parts for your D343 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3N-1480 [1] REGULATOR ASSEM.  
6. 3N-2044 [2] CLAMP ASSEM.  
7. 8L-5832 [4] NUT  
8. 2N-7151 [1] CAPACITOR  
9. 3N-2045 [2] CLAMP ASSEM.  
10. 7L-7400 [1] CAPACITOR  
11. 3N-2046 [1] RESISTOR ASSEM.  
    (Includes)
12. 3N-2047 [1] RESISTOR (top)  
  3N-2048 [1] RESISTOR (bottom)  
13. 3N-2049 [1] CAPACITOR ASSEM.  
15. 3N-2055 [1] STRIP (terminal marker)  
16. 3N-2056 [1] STRIP (terminal)  
17. 3N-7749 [1] WIRING HARNESS  
18. 3N-2043 [1] REACTOR ASSEM.  
19. 3N-2052 [1] STRIP (insulator)  
20. 3N-2051 [1] FUSE HOLDER  
21. 3N-2050 [1] FUSE (10 amps)  
22. 3N-7750 [1] PROTECTOR  
  3N-7752 [2] SPACER  
23. 3N-2040 [1] RHEOSTAT ASSEM.  
24. 3N-2042 [1] VOLTAGE SUPPRESSOR  
25. 3N-2041 [1] RHEOSTAT ASSEM.  
27. 6L-7004 [1] POTENTIOMETER  
28. 3N-1479 [1] RECTIFIER ASSEM.  
    (Includes)
29. 3N-1482 [1] RECTIFIER ASSEM. (field)  
30. 3N-1481 [1] RECTIFIER ASSEM. (cont.)  
31. 3N-4471 [1] INSULATOR  
    THE FOLLOWING REPAIR KIT IS AVAILABLE:
  3N-5536 [1] KIT (hardware)  
    (Includes Screws, Nuts, and Lockwashers)
 

#UEG0873S0597
 

3N-7755: REGULATOR AS

3N7755 REGULATOR ASSEMBLY
Part of 5N48 and 5N49 Generator Assemblies shown on Pages 343 and 345
c152522 UEG0873S
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Parts for your D343 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3N-7797 [1] REGULATOR  
2. 3N-2044 [2] CLAMP ASSEM.  
3. 8L-5832 [4] NUT  
4. 2N-7151 [1] CAPACITOR  
5. 3N-2045 [2] CLAMP ASSEM.  
6. 3N-7806 [1] RESISTOR ASSEM.  
7. 7L-7400 [1] CAPACITOR  
8. 3N-2043 [1] REACTOR ASSEM.  
10. 3N-2056 [1] STRIP (terminal)  
11. 3N-2055 [1] STRIP (terminal marker)  
12. 3N-7808 [1] FUSE HOLDER  
13. 3N-7807 [1] FUSE  
14. 3N-7750 [1] PROTECTOR (thermal)  
15. 3N-7752 [2] SPACER  
16. 3N-2040 [1] RHEOSTAT ASSEM.  
17. 3N-7805 [1] VOLTAGE (suppressor)  
18. 3N-2041 [1] RHEOSTAT ASSEM.  
19. 3N-7809 [1] WIRING HARNESS  
20. 6L-7004 [1] POTENTIOMETER  
21. 3N-7798 [1] RECTIFIER ASSEM.  
    (Includes)
22. 3N-7804 [1] RECTIFIER ASSEM. (field)  
23. 3N-7803 [1] RECTIFIER ASSEM. (cont.)  
24. 3N-4471 [1] INSULATOR  
 

#UEG0873S0598
 

3N-1956: ROTOR ASSEMBLY

3N1956 ROTOR ASSEMBLY
Part of 5N23, 5N24 and 5N25 Generator Assemblies shown on Pages 322, 328 and 334
c112959 UEG0873S
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Parts for your D343 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. [1] HEAT SINK ASSEM. (Positive)  
2. [2] LOCKWASHER  
3. [3] RECTIFIER ASSEM.  
4. [2] TUBE  
5. [1] VOLTAGE SUPPRESSOR  
6. [1] CLAMP  
7. [1] RESISTOR ASSEM.  
8. [1] SCREW  
  [1] NUT  
9. [1] FAN ASSEM.  
  [1] SCREW  
10. [1] HUB  
11. [1] HEAT SINK ASSEM. (Negative)  
12. [1] LOCKWASHER  
13. [1] VOLTAGE SUPPRESSOR  
14. [2] TUBE  
15. [3] RECTIFIER ASSEM.  
16. [2] SCREW  
  [2] NUT  
  [2] LOCKWASHER  
17. [6] SCREW  
  [6] LOCKWASHER  
18. [4] SCREW  
  [4] WASHER  
 

#UEG0873S0599
 

3N-6018: ROTOR ASSEMBLY

3N6018 ROTOR ASSEMBLY
Replaced by 3N9114 shown on Page 358A
Part of 5N23, 5N24, 5N25 and 5N5 Generator Assemblies shown on Pages 324, 326, 330, 332, 336, 338 and 340
c147679 UEG0873S
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Parts for your D343 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3N-1957 [1] HEAT SINK ASSEM. (Positive)  
2. 9B-7233 [2] LOCKWASHER  
3. 3N-1483 [3] RECTIFIER ASSEM.  
4. 3N-1958 [2] TUBE  
5. 3N-1961 [1] VOLTAGE SUPPRESSOR  
6. 3N-1960 [1] CLAMP  
7. 3N-1959 [1] RESISTOR ASSEM.  
8. 7S-1197 [1] SCREW  
  4B-2043 [1] NUT  
9. 2N-7620 [1] FAN ASSEM.  
  2N-7285 [1] SCREW  
10. 3L-9963 [1] HUB  
11. 3N-1969 [1] HEAT SINK ASSEM. (negative)  
    (Includes)
12. 9B-7233 [1] LOCKWASHER  
13. 3N-1970 [1] VOLTAGE SUPPRESSOR  
14. 3N-1958 [2] TUBE  
15. 3N-1484 [3] RECTIFIER ASSEM.  
16. 1H-4336 [2] SCREW  
  8L-5832 [2] NUT  
  8F-1434 [2] LOCKWASHER  
17. 9S-2010 [6] SCREW  
  8H-0878 [6] LOCKWASHER  
18. 3N-1645 [4] SCREW  
  4L-6499 [4] WASHER  
19. 3N-1965 [1] BEARING  
  6S-1753 [1] RING  
 

Caterpillar Parts SIS Catalog D343 :

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