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4N1662 FUEL INJECTION LINES GROUP Serial No. 92U1 to 92U1198 inclusive. FOR PRECHAMBERED ENGINES. Part of 9N2, 9N3, 9N4, 9N6 and 9N8 Engine Procurement Arrangements listed on Pages 16, 17, 18, 19, 21, 22 & 24 3406


FUEL SYSTEM
LINES GP-FUEL
PUMP GP-FUEL TRANSFER
FILTER GP-FUEL
PUMP GP-FUEL TRANSFER
PUMP GP-FUEL PRIMING
FILTER GP-FUEL
PUMP GP-FUEL INJECTION


FUEL SYSTEM

LINES GP-FUEL
 

#UEG0697S0220
 

4N-1662: LINES GP-FUEL INJECTION

4N1662 FUEL INJECTION LINES GROUP
Serial No. 92U1 to 92U1198 inclusive. FOR PRECHAMBERED ENGINES. Part of 9N2, 9N3, 9N4, 9N6 and
9N8 Engine Procurement Arrangements listed on Pages 16, 17, 18, 19, 21, 22 & 24
c119377 UEG0697S
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Parts for your 3406 TRUCK ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4N-1292 [6] LOCK  
2. 9L-9814 [10] NUT  
3. 4N-1796 C [6] ADAPTER  
4. 8M-4437 C [6] SEAL  
5. 4N-5336 [6] LINE ASSEM.  
  1H-1023 [6] SEAL  
6. 4N-1651 [1] LINE ASSEM. (No. 1)  
7. 4N-1281 [2] STRIP ASSEM.  
8. 9S-8586 [1] STUD  
9. 9S-2299 [2] STRIP  
10. 4N-2555 [3] DAMPER  
11. 0S-1617 [3] BOLT  
12. 4N-1652 [1] LINE ASSEM. (No. 2)  
13. 5H-7153 [1] SEAL  
14. 1S-0004 [1] SEAL  
15. 2P-3202 [3] BOLT  
16. 4N-1653 [1] LINE ASSEM. (No. 3)  
17. 4N-1279 [1] STRIP ASSEM.  
18. 9S-8586 [1] STUD  
19. 4N-1654 [1] LINE ASSEM. (No. 4)  
20. 4N-1277 [1] CLIP  
  4N-8249 [1] DAMPER  
21. 2P-3200 [2] BOLT  
22. 4N-1659 [1] BRACKET  
23. 1P-6909 [1] STRIP ASSEM.  
24. 9S-8586 [1] STUD  
25. 4N-1655 [1] LINE ASSEM. (No. 5)  
26. 4N-1656 [1] LINE ASSEM. (No. 6)  
27. 4N-3759 [6] NUT  
28. 4N-4877 [6] BODY  
29. 4N-1251 [6] NOZZLE ASSEM.  
30. 3B-4506 C [2] LOCKWASHER  
31. 3B-4505 C [3] LOCKWASHER  
  C   INDICATES CHANGE
 

#UEG0697S0221
 

4N-1662: LINES GP-FUEL INJECTION

4N1662 FUEL INJECTION LINES GROUP
Serial No. 92U1199-Up. FOR PRECHAMBERED ENGINES. Part of 9N2, 9N3, 9N4, 9N6 and 9N8
Engine Procurement Arrangements listed on Pages 17, 17B, 18, 19, 22, 22A and 24
c206133 UEG0697S
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Parts for your 3406 TRUCK ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4N-1292 [6] LOCK  
2. 1B-5354 C [4] NUT  
3. 4N-1797 C [6] ADAPTER ASSEM.  
4. 8M-4437 [6] SEAL  
5. 4N-5336 [6] LINE ASSEM.  
  1H-1023 [6] SEAL  
6. 4N-9971 C [1] LINE ASSEM. (no. 1)  
7. 4N-1281 C [3] STRIP ASSEM.  
8. 9S-8586 [1] STUD  
9. 9S-2299 [2] STRIP  
10. 4N-2555 [3] DAMPER  
11. 0S-1617 [3] BOLT  
12. 4N-9972 C [1] LINE ASSEM. (no. 2)  
13. 5H-7153 [1] SEAL  
14. 1S-0004 [1] SEAL  
15. 1A-2029 C [3] BOLT  
16. 4N-9973 C [1] LINE ASSEM. (no. 3)  
17. 4N-1251 [6] NOZZLE ASSEM.  
18. 9M-1974 C [7] WASHER  
19. 4N-9974 C [1] LINE ASSEM. (no. 4)  
20. 4N-1277 [1] CLIP  
  4N-8249 [1] DAMPER  
21. 0S-1594 C [2] BOLT  
  5M-2894 [2] WASHER  
22. 9N-1847 C [1] BRACKET  
23. 1P-6909 [1] STRIP ASSEM.  
24. 9S-8586 [1] STUD  
25. 4N-9975 C [1] LINE ASSEM. (no. 5)  
26. 4N-9976 C [1] LINE ASSEM. (no. 6)  
27. 4N-3759 [6] NUT  
28. 4N-4877 [6] BODY  
29. 9L-9814 C [6] NUT  
  C   INDICATES CHANGE
 

#UEG0697S0222
 

4N-3948: FUEL TRANSFER PUMP GROUP

4N3948 FUEL TRANSFER PUMP GROUP (4N3949 N/S)
Serial No. 92U1622-Up
Part of 9N1 Basic Engine Arrangement listed on Page 15
c208826 UEG0697S
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Parts for your 3406 TRUCK ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4N-3943 [1] BODY ASSEM.  
2. 2S-7467 [1] BEARING  
3. 4N-4249 [1] SEAL  
4. 4N-4248 [1] SEAL  
5. 4N-3944 [1] SHAFT  
6. 4B-3388 H [2] BOLT  
7. 4N-3945 [1] SHAFT ASSEM.  
8. 8S-4368 [1] GEAR (10 teeth)  
9. 6J-2419 [1] SEAL  
10. 4N-5434 H [1] GASKET  
11. 8S-4368 [1] GEAR (10 teeth)  
12. 6N-3561 C [1] COVER ASSEM.  
  1P-2298 [1] VALVE  
13. 1T-0099 [1] PIN  
14. 9S-4190 [1] PLUG  
  2M-9780 [1] SEAL  
15. 7S-4440 C [1] BOLT  
16. 4N-7465 C [1] GASKET  
17. 2P-4252 C [1] SPRING  
18. 8M-0874 C [1] PLUNGER ASSEM.  
19. 5M-6213 C [1] PLUG  
20. 2B-2694 [6] BOLT  
21. 7M-7260 C LIQUID GASKET  
  C   INDICATES CHANGE
  H   NOT PART OF 4N3948 FUEL TRANSF
 

#UEG0697S0223
 

4N-1981: FILTER GP-FUEL

4N1981 FUEL FILTER GROUP
Serial No. 92U1337-Up
Part of 9N1 Basic Engine Arrangement listed on Page 15
c206308 UEG0697S
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Parts for your 3406 TRUCK ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 6N-0918 [1] BASE ASSEM.  
    (Includes)
2. 9S-4167 [1] STUD  
3. 4N-5823 [1] FILTER ASSEM.  
  C   INDICATES CHANGE
 

#UEG0697S0224
 

4N-3948: FUEL TRANSFER PUMP GROUP

4N3948 FUEL TRANSFER PUMP GROUP (4N3949 N/S)
Serial No. 92U1 to 92U1621 inclusive
Part of 9N1 Basic Engine Arrangement listed on Page 15
c201448 UEG0697S
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Parts for your 3406 TRUCK ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4N-3943 [1] BODY ASSEM.  
2. 2S-7467 [1] BEARING  
3. 4N-4249 [1] SEAL  
4. 4N-4248 [1] SEAL  
5. 4N-3944 [1] SHAFT  
6. 4B-3388 CH [2] BOLT  
7. 4N-3945 [1] SHAFT ASSEM.  
8. 8S-4368 [1] GEAR (10 teeth)  
9. 6J-2419 [1] SEAL  
10. 4N-5434 H [1] GASKET  
11. 8S-4368 [1] GEAR (10 teeth)  
12. 4N-3942 [1] COVER ASSEM.  
  1P-2298 [1] VALVE  
13. 1T-0099 C [1] PIN  
14. 9S-4190 [1] PLUG  
  2M-9780 [1] SEAL  
15. 9S-4185 [1] PLUG  
16. 3K-0360 [1] SEAL  
17. 4N-3938 [1] SEAT  
18. 2S-0982 [1] SPRING  
19. 4N-1767 [1] VALVE  
20. 2B-2694 [6] BOLT  
  C   INDICATES CHANGE
  H   NOT PART OF 4N3948 FUEL TRANSF
 

#UEG0697S0225
 

4N-3287: PUMP GP-FUEL PRIMING

4N3287 FUEL PRIMING PUMP GROUP
Part of 9N1 Basic Engine Arrangement listed on Page 15
c215540 UEG0697S
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Parts for your 3406 TRUCK ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1P-0436 [1] GASKET  
2. 4B-3388 [1] BOLT  
    2.86 CM(1.125 IN)LONG
    -OR-
  1B-2790 C [1] BOLT  
    3.49 CM(1.375 IN)LONG
  9M-1974 C [1] WASHER  
    7.95 MM(.313 IN)DIA
3. 0S-1616 [1] BOLT  
    2.54 CM(1 IN)LONG
    -OR-
  7B-2742 C [1] BOLT  
    3.18 CM(1.25 IN)LONG
  5P-0537 C [1] WASHER  
    6.35 MM(.25 IN)DIA
4. 4N-2511 [1] PUMP AS-FUEL PRIMING  
  C   CHANGE FROM PREVIOUS TYPE
 

#UEG0697S0226
 

4N-1981: FILTER GP-FUEL

4N1981 FUEL FILTER GROUP
Serial No. 92U1 to 92U1336 inclusive. Part of 9N1 Basic Engine Arrangement
listed on Page 15. Only separate parts serviced
c118454 UEG0697S
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Parts for your 3406 TRUCK ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4N-5860 [1] BASE ASSEM.  
2. 1P-2298 [1] VALVE ASSEM.  
3. 4N-5823 [1] FILTER ASSEM.  
 

#UEG0697S0227
 

8H-7204: FILTER GP-FUEL

8H7204 PRIMARY FUEL FILTER GROUP
AN ATTACHMENT
c100914 UEG0697S
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Parts for your 3406 TRUCK ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  8H-2807 [1] NUT  
  2A-1162 [1] GASKET  
  1L-3769 [1] RING  
  7H-9680 [1] COVER  
  8H-2778 [1] GASKET  
  9M-2342 [1] ELEMENT ASSEM. (WASHABLE)  
  8H-7202 [1] CASE ASSEM.  
  7H-9678 [1] RETAINER  
  2H-3429 [1] RING  
  7S-9323 [1] SPRING  
 

#UEG0697S0228
 

9N-1845: FUEL SYSTEM GROUP

9N1845 FUEL SYSTEM GROUP
Serial No. 92U1 to 92U1336 inclusive. PROVIDES FIELD REPLACEMENT FOR LOW MOUNTED
SECONDARY FUEL FILTER AND 9L6161 FUEL FILTER LINES SHOWN ON PAGE 127
c152738 UEG0697S
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Parts for your 3406 TRUCK ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 9L-6958 [1] HOSE ASSEM. 24.88 in. (63.19 cm)  
2. 4N-7573 [2] HOSE ASSEM. 12.50 in. (31.75 cm)  
3. 2R-6806 [2] CONNECTOR  
4. 3J-1907 [9] SEAL  
5. 2A-4639 [2] BOLT  
6. 5M-2894 [2] WASHER  
7. 9N-1834 [1] BLOCK ASSEM.  
8. 030-7947 [3] ELBOW  
9. 9L-6492 [1] DAMPER  
10. 5P-4375 [1] TEE  
11. 3J-7355 [1] UNION  
12. 5P-4592 [1] ELBOW  
13. 5P-4653 [1] UNION  
14. 5B-2183 [1] NUT  
15. 9N-1849 [1] HOSE ASSEM. 30 in. (76.20 cm)  
16. 3N-1295 [1] HOSE ASSEM. 14 in. (35.56 cm)  
17. 7K-1181 [5] STRAP  
18. 2M-9780 [1] SEAL  
19. 9S-4182 [1] PLUG  
  3J-7354 [1] SEAL  
20. 9S-4191 [1] PLUG  
21. 6K-9194 [1] ELBOW  
22. 061-9463 [1] CONNECTOR (no. 8 hose)  
23. 9N-1847 [1] BRACKET  
24. 6N-0918 [1] BASE ASSEM.  
    (Includes)
  9S-4167 [1] STUD  
25. 4N-2511 [1] PUMP ASSEM.  
26. 1P-0436 [1] GASKET  
27. 4N-5823 [1] FILTER ASSEM.  
28. 4N-4125 [1] GASKET  
29. 4S-6399 [1] CONNECTOR  
30. 032-1267 [1] CONNECTOR (no. 6 hose)  
 

#UEG0697S0229
 

9N-1844: FUEL SYSTEM GROUP

9N1844 FUEL SYSTEM GROUP
Serial No. 92U1 to 92U2336 inclusive. Provides Field Replacement for High Mounted
Secondary Fuel Filter and 9N692 Fuel Filter Lines shown on Page 127
c153737 UEG0697S
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Parts for your 3406 TRUCK ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 4N-9624 [1] ADAPTER  
2. 9S-4191 [1] PLUG  
3. 3J-1907 [8] SEAL  
4. 2R-6806 [3] CONNECTOR  
5. 9S-4182 [1] PLUG  
  3J-7354 [1] SEAL  
6. 1J-8668 [2] STUD  
7. 4N-2511 [1] PUMP ASSEM.  
8. 6K-3607 [1] CONNECTOR  
  2M-9780 [1] SEAL  
9. 5P-4588 [1] ADAPTER  
10. 9N-1851 [1] BRACKET  
11. 6N-4394 [14] SHIM (use as required)  
12. 0S-1594 [2] BOLT  
13. 6N-4195 [1] BLOCK  
14. 4N-7573 [1] HOSE ASSEM. 12.50 in. (31.75 cm)  
15. 9L-5116 [1] HOSE ASSEM. 19.60 in. (49.78 cm)  
16. 5P-4653 [1] UNION  
17. 5B-2183 [1] NUT  
18. 1P-0436 [2] GASKET  
19. 5P-4375 [1] TEE  
20. 4N-5823 [1] FILTER ASSEM.  
21. 030-7947 [1] ELBOW  
22. 9N-1849 [2] HOSE ASSEM. 30 in. (76.2 cm)  
23. 9L-6492 [1] DAMPER  
24. 4N-4125 [1] GASKET  
25. 5P-4592 [1] ELBOW  
26. 9N-1847 [1] BRACKET  
27. 0S-1615 [1] BOLT .75 in. (19.05 mm) long  
28. 2B-2695 [1] BOLT .875 in. (22.23 mm) long  
29. 4S-6399 [1] CONNECTOR  
30. 3J-7355 [1] UNION  
31. 032-1267 [1] CONNECTOR (no. 6 hose)  
  061-9463 [1] CONNECTOR (no. 8 hose)  
32. 7K-1181 [5] STRAP  
33. 6N-0918 [1] BASE ASSEM.  
    (Includes)
  9S-4167 [1] STUD  
 

Information:

Truck Engine News
Engine News
Special Instruction
Fuel System and Fuel Ratio Control Test Procedure{1264, 1278}
Fuel System and Fuel Ratio Control Test Procedure{1264, 1278}
Repair Of Precombustion Chamber And Direct Injection Adapter Seating Surfaces{1101}
Repair Of Precombustion Chamber And Direct Injection Adapter Seating Surfaces{1101}
Testing Flat-Seat Fuel Injection Valves Using The 5P4150 Nozzle Testing Group{0782, 1254}
Testing Flat-Seat Fuel Injection Valves Using The 5P4150 Nozzle Testing Group{0782, 1254}
7000 Series Nozzles{0782}
7000 Series Nozzles{0782}
Technical Information Bulletin
Remanufactured Fuel Injection Nozzles
Remanufactured Fuel Injection Nozzles
Specifications
Fuel Injection Lines
3406 DIESEL TRUCK ENGINE
Primary Fuel Filter
3406 DIESEL TRUCK ENGINE
Fuel Filter Base
3406 DIESEL TRUCK ENGINE
Bracket For Fuel Filter Base
3406 DIESEL TRUCK ENGINE
Disassembly and Assembly
Fuel Injection Lines
3406 DIESEL TRUCK ENGINE
Fuel Filter Base
3406 DIESEL TRUCK ENGINE
Fuel Injection Valves
3406 DIESEL TRUCK ENGINE
Fuel Valve Adapters
3406 DIESEL TRUCK ENGINE
Service Magazine

Caterpillar Parts SIS Catalog 3406 :

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