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PRELUBRICATION PUMP MOUNTING (3N2644 N/S) Serial No. 35B688 to 35B1207 inclusive 1N9924 Valve parts are shown on Page 53 D399




LUBRICATION SYSTEM

PUMP GP-PRELUBRICATION
 

#UEG0637S0210
 

3N-2644: MOUNTING GP-PRELUBE PUMP

PRELUBRICATION PUMP MOUNTING (3N2644 N/S)
Serial No. 35B688 to 35B1207 inclusive
1N9924 Valve parts are shown on Page 53
c136339 UEG0637S
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Parts for your D399 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5K-9241 [1] ELBOW  
2. 3N-2153 [1] TUBE ASSEM.  
3. 5K-9242 [1] UNION  
4. 3L-2875 [2] CLIP  
5. 4S-8384 H TUBE 36.67"  
  4B-8756 [2] NUT  
6. 5K-9239 [1] CONNECTOR  
7. 3N-2125 [1] PLATE  
8. 0S-1590 [4] BOLT  
  1M-3381 [4] SPACER  
9. 3B-4506 [12] LOCKWASHER  
10. 2N-7106 [1] PLATE  
11. 0S-1571 [4] BOLT  
  4B-4278 [4] WASHER  
  8B-7430 [4] SPACER  
12. 8B-5774 [2] BUSHING  
13. 3N-1925 [1] TUBE ASSEM.  
14. 3B-6498 [3] ELBOW  
15. 3B-7749 [1] NIPPLE  
16. 9S-7296 [2] ELBOW  
17. 1N-9924 Y [1] VALVE ASSEM.  
    (See Separate Illustration)
18. 9M-5306 [1] SCREEN ASSEM.  
19. 2N-7107 [1] PLATE  
  7L-2013 [1] GASKET  
20. 3B-6555 [2] ELBOW  
21. 1A-2029 [4] BOLT  
22. 6B-8128 [1] NIPPLE  
23. 7F-8701 [1] NIPPLE  
24. 9L-4652 [1] HOSE ASSEM. (17.25" long overall)  
  H   ORDER BY THE FOOT
  Y   SEPARATE ILLUSTRATION
 

#UEG0637S0211
 

3N-2644: MOUNTING GP-PRELUBE PUMP

3N2644 PRELUBRICATION PUMP MOUNTING GROUP
Serial No. 35B1208 to 35B1834 inclusive. 1N9924 Valve parts are shown on Page 53
c149912 UEG0637S
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Parts for your D399 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5K-9241 [1] ELBOW  
2. 3N-2153 [1] TUBE ASSEM.  
3. 5K-9242 [1] UNION  
4. 3L-2875 [2] CLIP  
5. 4S-8384 H TUBE 36.67 in. (9.31 dm)  
  4B-8756 [2] NUT  
6. 5K-9239 [1] CONNECTOR  
7. 3N-2125 [1] PLATE  
8. 0S-1590 [4] BOLT  
  1M-3381 [4] SPACER  
9. 3B-4506 [12] LOCKWASHER  
10. 2N-7106 [1] PLATE  
11. 0S-1571 [4] BOLT  
  4B-4278 [4] WASHER  
  8B-7430 [4] SPACER  
12. 8B-5774 [2] BUSHING  
13. 3N-1925 [1] TUBE ASSEM.  
14. 3B-6498 [3] ELBOW  
15. 3N-7364 C [2] COUPLING  
16. 9S-7296 [2] ELBOW  
17. 1N-9924 Y [1] VALVE ASSEM.  
    (See Separate Illustration)
18. 9M-5306 [1] SCREEN ASSEM.  
19. 2N-7107 [1] PLATE  
  7L-2013 [1] GASKET  
20. 3B-6555 [2] ELBOW  
21. 1A-2029 [4] BOLT  
22. 6B-8128 C [2] NIPPLE  
23. 2S-9222 C [1] PIPE  
24. 5P-1401 CJ HOSE 36 cm(14.17 in.)  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
  H   ORDER BY THE FOOT
  J   ORDER BY THE CENTIMETRE
 

#UEG0637S0212
 

3N-2644: MOUNTING GP-PRELUBE PUMP

3N2644 MOUNTING GP--PRELUBE PUMP
S/N 35B1835-6789
1N9924-Page 53
c229397 UEG0637S
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Parts for your D399 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5K-9241 [1] ELBOW  
2. 3N-2153 [1] TUBE ASSEM.  
3. 5K-9242 [1] UNION  
4. 3L-2875 [2] CLIP  
5. 5P-1197 CJ TUBE 93.1 cm(36.67 in.)  
  4B-8756 [2] NUT  
6. 5K-9239 [1] CONNECTOR  
7. 3N-2125 [1] PLATE  
8. 0S-1590 [4] BOLT  
  1M-3381 [4] SPACER  
9. 3B-4506 [12] LOCKWASHER  
10. 2N-7106 [1] PLATE  
11. 0S-1571 [4] BOLT  
  4B-4278 [4] WASHER  
  8B-7430 [4] SPACER  
12. 8B-5774 [2] BUSHING  
13. 3N-9669 C [1] TUBE ASSEM.  
14. 3B-6498 [3] ELBOW  
15. 3N-7364 [2] COUPLING  
16. 9S-7296 [2] ELBOW  
17. 1N-9924 Y [1] VALVE ASSEM.  
    (Separate Illustration)
18. 9M-5306 [1] SCREEN ASSEM.  
19. 2N-7107 [1] PLATE  
  7L-2013 [1] GASKET  
20. 3B-6555 [2] ELBOW  
21. 1A-2029 [4] BOLT  
22. 6B-8128 [2] NIPPLE  
23. 2S-9222 [1] PIPE  
24. 5P-1401 J HOSE 36 cm(14.17 in.)  
25. 5P-5042 C [1] JOINT ASSEM.  
    (Includes)
  9S-2082 [2] SEAL  
26. 5N-6747 C [1] TUBE ASSEM.  
  C   INDICATES CHANGE
  J   ORDER BY THE CENTIMETER
  Y   SEPARATE ILLUSTRATION
 

#UEG0637S0213
 

3N-2644: MOUNTING GP-PRELUBE PUMP

3N2644 MOUNTING GP--PRELUBE PUMP
S/N 35B6790-Up
1N9924-Page 53
c351317 UEG0637S
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Parts for your D399 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5K-9241 [1] ELBOW  
2. 3N-2153 [1] TUBE AS  
3. 5K-9242 [1] UNION-FLARED  
4. 3L-2875 [2] CLIP  
5. 5P-1197 BE TUBE  
  4B-8756 [2] NUT-FLARED  
6. 5K-9239 [1] CONNECTOR  
7. 3N-2125 [1] PLATE  
8. 0S-1590 [4] BOLT  
  1M-3381 [4] SPACER  
9. 3B-4506 [12] LOCKWASHER  
10. 2N-7106 [1] PLATE-SUPPORT  
11. 0S-1571 [4] BOLT  
  4B-4278 [4] WASHER  
  8B-7430 [4] SPACER  
12. 8B-5774 [2] BUSHING-REDUCING  
13. 3N-9669 [1] TUBE AS  
14. 3B-6498 C [2] ELBOW  
15. 3N-7364 [2] COUPLING  
16. 9S-7296 [2] ELBOW-FLARED  
17. 1N-9924 Y [1] VALVE AS-CHECK  
18. 9M-5306 [1] SCREEN AS-SUCTION  
19. 2N-7107 [1] PLATE  
  7L-2013 [1] GASKET  
20. 3B-6555 [2] ELBOW  
21. 1A-2029 [4] BOLT  
22. 6B-8128 C [1] NIPPLE-PIPE  
23. 2S-9222 [1] PIPE  
24. 5P-1401 E HOSE 36CM(14.17IN.)  
25. 5P-5042 [1] JOINT AS-ELBOW  
  9S-2082 [2] SEAL  
26. 5N-6747 [1] TUBE AS  
27. 002-5743 C [1] ELBOW  
  B   USE AS REQUIRED
  C   CHANGE FROM PREVIOUS TYPE
  E   ORDER BY THE CENTIMETER
  Y   SEPARATE ILLUSTRATION
 

#UEG0637S0214
 

3N-7709: PUMP AS-OIL

3N7709 OIL PUMP ASSEMBLY
Serial No. 35B1275 to 35B3634 inclusive
Part of Oil Pump shown on Page 50D
c220768 UEG0637S
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Parts for your D399 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3N-7605 [1] MANIFOLD  
2. 4L-6766 [4] DOWEL  
3. 9S-4188 C [3] PLUG  
  4K-1388 C [3] SEAL  
4. 3N-7710 [1] SHAFT ASSEM.  
    (Includes)
5. 3N-8247 [1] KEY  
6. 6L-8806 [1] MANIFOLD ASSEM.  
    (Includes)
7. 5L-2648 [1] BEARING  
8. 9S-1343 [2] PLUG  
9. 4L-3770 [1] RETAINER ASSEM.  
    (Includes)
10. 5L-2649 [1] BEARING  
11. 6F-0984 [1] DOWEL  
12. 0S-1588 [5] BOLT  
  4M-8974 [1] LOCK (2 Hole)  
  5L-4949 [1] LOCK (5 Hole)  
13. 3P-0658 [2] SEAL  
14. 5B-5059 [5] BOLT  
15. 5L-6267 [9] WASHER .05 in. (1.27 mm) thick  
  8H-3526 [9] WASHER .0096 in. (3.04 mm) thick  
16. 3N-7702 [2] SHAFT  
17. 3N-7707 [2] GEAR ASSEM. (12 teeth)  
    (Each Includes)
18. 5L-2651 [2] BEARING  
19. 3L-0742 [1] BOLT  
20. 3N-0911 [1] COVER ASSEM.  
    (Includes)
  4B-9783 [1] BALL  
21. 5L-2652 [1] BEARING  
22. 8F-4197 [3] BOLT  
  C   INDICATES CHANGE
 

#UEG0637S0215
 

5N-3803: PUMP GP-OIL

5N3803 OIL PUMP ASSEMBLY
Serial No. 35B3635 to 35B3950 and 39B3953 to 39B3962 inclusive
Part of 5N3802 Oil Pump Group shown on Page 50E
c220770 UEG0637S
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Parts for your D399 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 0T-0573 [1] BOLT  
2. 5M-2894 [16] WASHER  
3. 5N-3811 [1] PLATE  
4. 5N-3812 [1] GASKET  
5. 1N-9349 [1] SEAL  
6. 9S-4185 [1] PLUG  
  8L-2786 [1] SEAL  
7. 8F-4197 [3] BOLT  
8. 8H-3526 [9] WASHER 3.04 mm(.12 in.) thick  
  5L-6267 [9] WASHER 1.27 mm(.05 in.) thick  
9. 3N-7605 [1] MANIFOLD  
10. 4L-6766 [4] DOWEL  
11. 3P-0658 [2] SEAL  
12. 5N-3804 [1] SHAFT ASSEM.  
    (Includes)
  3N-7701 [1] GEAR (12 teeth)  
13. 3N-8247 [1] KEY  
14. 6L-8806 [1] MANIFOLD ASSEM.  
    (Includes)
15. 5L-2648 [1] BEARING  
16. 9S-1343 [2] PLUG  
17. 4L-3770 [1] RETAINER ASSEM.  
    (Includes)
18. 5L-2649 [1] BEARING  
19. 6F-0984 [1] DOWEL  
20. 0S-1588 [5] BOLT  
  4M-8974 [1] LOCK (2 hole)  
  5L-4949 [1] LOCK (5 hole)  
21. 3N-7707 [2] GEAR ASSEM. (12 teeth)  
    (Each Includes)
22. 5L-2651 [2] BEARING  
23. 9S-4188 [3] PLUG  
  4K-1388 [3] SEAL  
24. 5N-3806 [1] HOUSING ASSEM  
    (Includes)
  5L-2652 [1] BEARING  
25. 5N-3810 [1] GASKET  
26. 5N-3808 [1] COVER ASSEM.  
    (Includes)
  1Y-2681 [2] DOWEL 6.35 mm(.25 in.)  
  5M-4987 [2] DOWEL 12.45 mm(.50 in.)  
27. 0L-2070 [1] BOLT  
28. 9S-4190 [1] PLUG  
  7L-2224 [1] SEAL  
29. 9S-4182 [1] PLUG  
  033-5853 [1] SEAL  
30. 0S-1590 [6] BOLT  
31. 5B-5059 [6] BOLT  
32. 1A-2029 [4] BOLT  
33. 3N-7702 [2] SHAFT  
34. 0L-1143 [4] BOLT  
  C   INDICATES CHANGE
 

#UEG0637S0216
 

8N-2744: PUMP GP-OIL

8N2744 OIL PUMP GROUP
Serial No. 35B3951, 35B3952 & 35B3963 to 35B6530 inclusive
Part of 5N3802 Oil Pump Group shown on Page 50F
c223815 UEG0637S
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Parts for your D399 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 0T-0573 [1] BOLT  
2. 5M-2894 [16] WASHER  
3. 5N-3811 [1] PLATE  
4. 5N-3812 [1] GASKET  
5. 1N-9349 [1] SEAL  
6. 9S-4185 [1] PLUG  
  8L-2786 [1] SEAL  
7. 8F-4197 [3] BOLT  
8. 8H-3526 [9] WASHER 3.04 mm(.12 in.) thick  
  5L-6267 [9] WASHER 1.27 mm(.05 in.) thick  
9. 3N-7605 [1] MANIFOLD  
10. 4L-6766 [4] DOWEL  
11. 3P-0658 [2] SEAL  
12. 5N-3804 [1] SHAFT ASSEM.  
    (Includes)
  3N-7701 [1] GEAR (12 teeth)  
13. 3N-8247 [1] KEY  
14. 6L-8806 [1] MANIFOLD ASSEM.  
    (Includes)
15. 5L-2648 [1] BEARING  
16. 9S-1343 [2] PLUG  
17. 4L-3770 [1] RETAINER ASSEM.  
    (Includes)
18. 5L-2649 [1] BEARING  
19. 6F-0984 [1] DOWEL  
20. 0S-1588 [5] BOLT  
  4M-8974 [1] LOCK (2 hole)  
  5L-4949 [1] LOCK (5 hole)  
21. 3N-7707 [2] GEAR ASSEM. (12 teeth)  
    (Each Includes)
22. 5L-2651 [2] BEARING  
23. 9S-4188 [3] PLUG  
  4K-1388 [3] SEAL  
24. 5N-3806 [1] HOUSING ASSEM  
    (Includes)
  5L-2652 [1] BEARING  
25. 5N-3810 [1] GASKET  
26. 8N-1342 [1] COVER  
  1Y-2681 [2] DOWEL 6.35 mm (.25 in.) long  
  5M-4987 [2] DOWEL 12.45 mm(.50 in.) long  
27. 0L-2070 [2] BOLT  
28. 9S-4190 [1] PLUG  
  7L-2224 [1] SEAL  
29. 9S-4182 [1] PLUG  
  033-5853 [1] SEAL  
30. 0S-1590 [5] BOLT  
31. 5B-5059 [6] BOLT  
32. 1A-2029 [4] BOLT  
33. 3N-7702 [2] SHAFT  
34. 0L-1143 [4] BOLT  
35. 9S-1343 [1] PLUG  
 

#UEG0637S0217
 

5N-4412: PUMP GP-ENGINE OIL

5N4412 OIL PUMP GROUP
Serial No. 35B6531-Up
Part of 5N4413 Oil Pump Group shown on Page 50G
c182910 UEG0637S
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Parts for your D399 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5N-3804 [1] SHAFT ASSEM.  
  3N-8247 [1] KEY  
2. 1N-9349 [1] SEAL  
3. 0L-1143 [4] BOLT  
4. 5M-2894 [16] WASHER  
5. 0T-0573 [1] BOLT  
6. 5N-3811 [1] PLATE  
7. 5N-3812 [1] GASKET  
8. 8N-1839 [1] COVER  
  5M-4987 [2] DOWEL (large)  
  1Y-2681 [2] DOWEL (small)  
9. 9S-4185 [1] PLUG  
  3K-0360 [1] SEAL  
10. 8F-4197 [3] BOLT  
11. 5P-8244 [9] WASHER 2.5mm(.098 in.)thick  
  5L-6267 [9] WASHER 1.27mm(.050 in.)thick  
12. 5N-4410 [1] MANIFOLD ASSEM.  
13. 4L-6766 [4] DOWEL  
14. 5N-8175 [1] PLUG  
  2S-4078 [1] SEAL  
15. 3P-0658 [2] SEAL  
16. 5N-4408 [1] MANIFOLD ASSEM.  
17. 5L-2648 [1] BEARING  
18. 9S-1343 [1] PLUG  
19. 4L-3770 [1] RETAINER ASSEM  
20. 6F-0984 [1] DOWEL  
21. 5N-6165 [1] BEARING ASSEM.  
22. 0S-1588 [5] BOLT  
23. 5N-3806 [1] HOUSING  
24. 5L-2652 [1] BEARING  
25. 5B-5059 [6] BOLT  
26. 5N-3810 [1] GASKET  
27. 0L-2070 [1] BOLT  
28. 9S-4190 [1] PLUG  
  2M-9780 [1] SEAL  
29. 9S-4182 [1] PLUG  
  3J-7354 [1] SEAL  
30. 0S-1590 [6] BOLT  
31. 3N-7707 [2] GEAR ASSEM. (12 teeth)  
32. 5L-2651 [2] BEARING  
33. 3N-7702 [2] SHAFT  
34. 1A-2029 [4] BOLT  
35. 9S-1343 [1] PLUG  
36. 2S-2781 [1] PLUNGER  
  6N-1280 [1] SPRING  
37. 8J-8559 [1] PLUG  
  7M-8485 [1] SEAL  
38. 9S-4191 [2] PLUG  
  3J-1907 [2] SEAL  
39. 6V-3510 [1] ADAPTER  
40. 4K-1388 [3] SEAL  
41. 2S-2251 [1] SEAL  
42. 4F-8965 [2] BOLT  
43. 9S-4188 [2] PLUG  
44. 4M-8974 [1] LOCK (2 hole)  
  5L-4949 [1] LOCK (5 hole)  
 

#UEG0637S0218
 

3N-7715: PUMP GP-OIL

3N7715 OIL PUMP GROUP
Serial No. 35B1275 to 35B3634 inclusive
3N7709 Pump parts are shown on Page 50C
c220767 UEG0637S
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Parts for your D399 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3N-7709 YC [1] PUMP ASSEM.  
    (Separate Illustration)
2. 1A-2029 C [6] BOLT  
3. 5L-5840 [2] WASHER  
4. 4L-3437 [2] GASKET  
5. 4B-3388 [2] BOLT  
  3B-4505 [2] LOCKWASHER  
6. 7L-7735 [1] GASKET  
7. 3B-4506 [10] LOCKWASHER  
8. 3N-0910 [1] ADAPTER ASSEM.  
    (Includes)
  2D-6642 [3] BALL  
9. 5L-2649 [1] BEARING  
10. 1C-2251 C [4] BOLT  
11. 3N-7731 [1] GASKET  
12. 3P-0653 [2] SEAL  
13. 6L-8809 [1] TUBE  
14. 0S-1591 [3] BOLT  
15. 5M-2894 C [6] WASHER  
16. 3N-7730 [1] PLATE  
17. 4L-7924 [1] BOLT  
18. 0S-1588 C [2] BOLT  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#UEG0637S0219
 

5N-3802: PUMP GP-OIL

5N3802 OIL PUMP GROUP
Serial No. 35B3635 to 35B3950, 35B3953 to 35B3962 inclusive
5N3803 Pump parts are shown on Page 50C-1
c220769 UEG0637S
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Parts for your D399 INDUSTRIAL ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5N-3803 Y [1] PUMP ASSEM.  
    (Separate Illustration)
2. 0S-1588 [2] BOLT  
  5L-5840 [2] WASHER 1.19mm (.047 in.) thick  
3. 5M-2894 [16] WASHER 2.77mm (.109 in.) thick  
4. 4L-3437 [2] GASKET  
5. 3N-0910 [1] ADAPTER ASSEM.  
    (Includes)
6. 5L-2649 [1] BEARING  
7. 7L-7735 [1] GASKET  
8. 4B-3388 [2] BOLT  
  9M-1974 [2] WASHER  
9. 1A-2029 [6] BOLT  
10. 1C-2251 [4] BOLT  
11. 3N-7731 [1] GASKET  
12. 3P-0653 [2] SEAL  
13. 6L-8809 [1] TUBE  
14. 0S-1591 [3] BOLT  
15. 3N-7730 [1] PLATE  
16. 4L-7924 [1] BOLT  
  Y   SEPARATE ILLUSTRATION
 

Information:

Engine News
Specifications
Prelube Oil Pump And Motor; (Early Type)
D399, G399, D398, G398, D379, G379 ENGINES
Prelube Pump Motor; (Later Type)
D399, G399, D398, G398, D379, G379 ENGINES
Prelube Pump; (Later Type)
D399, G399, D398, G398, D379, G379 ENGINES
Prelubrication Pump And Air Motor
D399, G399, D398, G398, D379, G379 ENGINES
Prelube Pump
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
Disassembly and Assembly
Prelubrication Oil Pump (D399)
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
Sump Pump
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
Service Magazine

Caterpillar Parts SIS Catalog D399 :

Truck sale:

 
 
Caterpillar D399
- Industrial engines
WHEELER MACHINERY CO.
130.000 
Caterpillar D399, Industriemaschinen, Bau-Und Bergbauausrüstung
- Industrial engines
LOUISIANA CAT POWER SYSTEMS
USD $12,000 
CAT D399

L&K Machinery
USD $8,995 
CAT D399

Surplus Heavy Equipment & Parts
Long Branch, New Jersey
 
 
CAT D399

Yoder & Frey Auctioneers
Ashland, Ohio
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