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3N9338 OIL RETURN TUBE GROUP Serial No. 69B1254 to 69B1549 inclusive Provides Field Replacement for 3N4288 Tube shown on Pages 48B and 48D D379A




COOLING SYSTEM

COOLER GP
 

#UEG0647S0190
 

3N-9338: TUBE GP-OIL RETURN

3N9338 OIL RETURN TUBE GROUP
Serial No. 69B1254 to 69B1549 inclusive
Provides Field Replacement for 3N4288 Tube shown on Pages 48B and 48D
UEG0647S0190 UEG0647S
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Parts for your D379A MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
 

#UEG0647S0191
 

3N-2694: PUMP GP-OIL

3N2694 OIL PUMP GROUP
Serial No. 69B1227 to 69B1549 inclusive
c150163 UEG0647S
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Parts for your D379A MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 0S-1594 [7] BOLT  
2. 3B-4506 [21] LOCKWASHER  
3. 5L-3393 [1] COVER  
  4L-7923 [1] GASKET  
4. 5L-5840 [2] WASHER  
5. 1A-2029 [8] BOLT  
6. 4B-3388 [2] BOLT  
  3B-4505 [2] LOCKWASHER  
7. 7L-7735 [1] GASKET  
8. 4L-3437 [2] GASKET  
9. 3N-0910 [1] ADAPTER ASSEM.  
10. 5L-2649 [1] BEARING  
11. 0S-1590 [4] BOLT  
12. 4L-6199 [1] TUBE  
13. 3P-0657 [2] SEAL  
14. 5L-5985 [1] PLATE  
  5L-5986 [1] GASKET  
15. 3B-1915 [3] BOLT  
16. 4L-7924 [1] BOLT  
17. 5L-5993 [1] OIL PUMP ASSEM.  
18. 5L-9257 [1] MANIFOLD ASSEM.  
19. 4L-6766 [4] DOWEL  
20. 3B-0551 [2] PLUG  
21. 3P-0658 C [2] SEAL  
22. 7F-8698 [6] BOLT  
23. 3B-4507 [9] LOCKWASHER  
24. 2N-5975 [1] MANIFOLD ASSEM.  
25. 5L-2652 [1] BEARING  
26. 5L-5982 [2] SHAFT  
27. 4L-6795 [2] GEAR ASSEM.  
28. 5L-2650 [2] BEARING  
29. 4F-7226 [3] BOLT  
30. 4L-6816 [1] MANIFOLD ASSEM.  
31. 5L-2648 [1] BEARING  
32. 3D-4603 [3] PLUG  
33. 9S-1343 [2] PLUG  
34. 5L-5992 [1] SHAFT ASSEM.  
  4L-6763 [1] GEAR  
  4L-6764 [1] KEY  
35. 4L-3770 [1] RETAINER ASSEM.  
36. 6F-0984 [1] DOWEL  
37. 5L-2649 [1] BEARING  
38. 0S-1588 [5] BOLT  
  4M-8974 [1] LOCK (2 Hole)  
  5L-4949 [1] LOCK (5 Hole)  
  C   INDICATES CHANGE
 

#UEG0647S0192
 

3N-2694: PUMP GP-OIL

3N2694 OIL PUMP GROUP
Serial No. 69B1550 to 69B1985 inclusive
c220622 UEG0647S
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Parts for your D379A MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5M-2894 [4] WASHER  
2. 3B-4506 [10] LOCKWASHER  
3. 5L-5840 [2] WASHER  
4. 1A-2029 [6] BOLT  
5. 4B-3388 [2] BOLT  
6. 3B-4505 [2] LOCKWASHER  
7. 7L-7735 [1] GASKET  
8. 4L-3437 [2] GASKET  
9. 3N-0910 [1] ADAPTER ASSEM.  
    (Includes)
10. 5L-2649 [1] BEARING  
11. 1C-2251 C [4] BOLT  
12. 6L-8809 [1] TUBE  
13. 3P-0653 [2] SEAL  
14. 3N-7730 [1] PLATE  
  3N-7731 [1] GASKET  
15. 0S-1591 [3] BOLT  
16. 4L-7924 [1] BOLT  
17. 3N-5554 [1] OIL PUMP ASSEM.  
    (Includes)
18. 5L-9257 [1] MANIFOLD ASSEM.  
    (Includes)
19. 4L-6766 [4] DOWEL  
20. 3B-0551 [2] PLUG  
21. 3P-0658 [2] SEAL  
22. 4F-7226 [8] BOLT  
23. 3N-0911 [1] COVER ASSEM.  
    (Includes)
  4B-9783 [1] BALL  
24. 5L-2652 [1] BEARING  
25. 8H-3526 [9] WASHER 3.04 mm(.12 in.)thk.  
  5L-6267 [9] WASHER 1.27 mm(.05 in.)thk.  
26. 5L-5982 [2] SHAFT  
27. 4L-6795 [2] GEAR ASSEM.  
    (Each Includes)
28. 5L-2650 [2] BEARING  
29. 5B-5059 [1] BOLT  
30. 6L-8806 [1] MANIFOLD ASSEM.  
    (Includes)
31. 5L-2648 [1] BEARING  
32. 3D-4603 [3] PLUG  
33. 9S-1343 [2] PLUG  
34. 6L-3546 [1] SHAFT ASSEM.  
    (Includes)
  4L-6763 [1] GEAR  
  4L-6764 [1] KEY  
35. 4L-3770 [1] RETAINER ASSEM.  
    (Includes)
36. 6F-0984 [1] DOWEL  
37. 5L-2649 [1] BEARING  
38. 0S-1588 [5] BOLT  
  4M-8974 [1] LOCK (2 hole)  
  5L-4949 [1] LOCK (5 hole)  
39. 1A-2029 [2] BOLT 28.45 mm(1.125 in.)long  
    -OR-
  0S-1588 C [2] BOLT 31.75 mm(1.25 in.)long  
  5M-2894 C [2] WASHER  
  C   INDICATES CHANGE
 

#UEG0647S0193
 

5N-3794: PUMP GP-ENGINE OIL

5N3794 OIL PUMP GROUP
Serial No. 69B1986 to 69B2003 inclusive
5N3795 Pump parts are shown on Page 50A-2
c220623 UEG0647S
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Parts for your D379A MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5N-3795 Y [1] PUMP ASSEM.  
    (Separate Illustration)
2. 0S-1588 [2] BOLT  
  5L-5840 [2] WASHER 1.27 mm(.05 in.) thick  
3. 5M-2894 [16] WASHER 63.5mm(2.5 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. 0S-1591 [3] BOLT  
12. 3N-7730 [1] PLATE  
  3N-7731 [1] GASKET  
13. 6L-8809 [1] TUBE  
14. 3P-0653 [1] SEAL  
15. 4L-7924 [1] BOLT  
  Y   SEPARATE ILLUSTRATION
 

#UEG0647S0194
 

5N-3795: OIL PUMP ASSEMBLY

5N3795 OIL PUMP ASSEMBLY
Serial No. 69B1986 to 69B2003 inclusive
Part of 5N3794 Oil Pump Group shown on Page 50A-1
c220624 UEG0647S
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Parts for your D379A MARINE 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. 4F-7226 [3] BOLT  
8. 8H-3526 [9] WASHER 3.04 mm(.1196 in.)  
  5L-6267 [9] WASHER 1.27 mm(.05 in.) thick  
9. 3P-0658 [2] SEAL  
10. 5L-9257 [1] MANIFOLD ASSEM.  
    (Includes)
  9S-4188 [3] PLUG  
  4K-1388 [3] SEAL  
11. 6L-8806 [1] MANIFOLD ASSEM.  
    (Includes)
  9S-1343 [2] PLUG  
12. 5L-2648 [1] BEARING  
13. 4L-3770 [1] RETAINER ASSEM.  
    (Includes)
14. 6F-0984 [1] DOWEL  
15. 5L-2649 [1] BEARING  
16. 5N-3796 [1] SHAFT ASSEM.  
    (Includes)
  4L-6763 [1] GEAR (12 teeth)  
  4L-6764 [1] KEY  
17. 0S-1588 [5] BOLT  
  4M-8974 [1] LOCK (2 hole)  
  5L-4949 [1] LOCK (5 hole)  
18. 4L-6795 [2] GEAR ASSEM. (12 teeth)  
    (Each Includes)
  5L-2650 [2] BEARING  
19. 5L-5982 [2] SHAFT  
20. 7F-8698 [6] BOLT  
21. 5N-3806 [1] HOUSING ASSEM.  
    (Includes)
  5L-2652 [1] BEARING  
22. 5N-3810 [1] GASKET  
23. 5N-3808 [1] COVER ASSEM.  
    (Includes)
  1Y-2681 [2] DOWEL 6.35 mm(.25 in.)  
  5M-4987 [2] DOWEL 12.45 mm(.50 in.)  
24. 0L-2070 [1] BOLT  
25. 9S-4190 [1] PLUG  
  7L-2224 [1] SEAL  
26. 9S-4182 [1] PLUG  
  033-5853 [1] SEAL  
27. 0S-1590 [6] BOLT  
28. 1A-2029 [4] BOLT  
29. 0L-1143 [4] BOLT  
 

#UEG0647S0195
 

5N-3794: PUMP GP-ENGINE OIL

5N3794 OIL PUMP GROUP
Serial No. 69B2004 to 69B2080 inclusive
8N2742 Pump parts are shown on Page 50A-4
c224060 UEG0647S
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Parts for your D379A MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 8N-2742 CY [1] PUMP ASSEM.  
    (Separate Illustration)
2. 0S-1588 [2] BOLT  
  5L-5840 [2] WASHER 1.27 mm(.05 in.) thick  
3. 5M-2894 [16] WASHER 63.5mm(2.5 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. 0S-1591 [3] BOLT  
12. 3N-7730 [1] PLATE  
  3N-7731 [1] GASKET  
13. 6L-8809 [1] TUBE  
14. 3P-0653 [1] SEAL  
15. 4L-7924 [1] BOLT  
  Y   SEPARATE ILLUSTRATION
 

#UEG0647S0196
 

5N-3794: PUMP GP-ENGINE OIL

5N3794 OIL PUMP GROUP
Serial No. 69B2081 to 69B2144 inclusive
1W1873 Pump parts are shown on Page 50A-5
c234522 UEG0647S
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Parts for your D379A MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1W-1873 CY [1] PUMP ASSEM.  
    (Separate Illustration)
2. 0S-1588 [2] BOLT  
  5L-5840 [2] WASHER 1.27 mm(.05 in.) thick  
3. 5M-2894 [16] WASHER 63.5mm(2.5 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. 0S-1591 [3] BOLT  
12. 3N-7730 [1] PLATE  
  3N-7731 [1] GASKET  
13. 6L-8809 [1] TUBE  
14. 3P-0653 [1] SEAL  
15. 4L-7924 [1] BOLT  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#UEG0647S0197
 

5N-7891: PUMP GP-ENGINE OIL GEAR

5N7891 ENGINE OIL PUMP GROUP
Serial No. 69B2145-Up
5N7890 Pump parts are shown on Page 50A-6
c182777 UEG0647S
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Parts for your D379A MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5N-7890 Y [1] PUMP ASSEM.  
    (Separate Illustration)
2. 0S-1588 [2] BOLT  
  5L-5840 [2] WASHER 1.19mm(.0469 in.)thick  
3. 5M-2894 [6] WASHER 2.79mm(.109 in.)thick  
4. 4L-3437 [2] GASKET  
5. 0S-1618 [2] BOLT  
6. 7L-7735 [1] GASKET  
7. 0S-1594 [6] BOLT  
8. 3N-0910 [1] ADAPTER ASSEM.  
    (Includes)
  2D-6642 [3] BALL  
9. 5L-2649 [1] BEARING  
10. 0S-1571 [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. 5N-4411 [1] BOLT  
  Y   SEPARATE ILLUSTRATION
 

#UEG0647S0198
 

8N-2742: OIL PUMP ASSEMBLY

8N2742 OIL PUMP ASSEMBLY
Serial No. 69B2004 to 69B2080 inclusive
Part of 5N3794 Oil Pump Group shown on Page 50A-3
c224061 UEG0647S
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Parts for your D379A MARINE 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. 4F-7226 [3] BOLT  
8. 8H-3526 [9] WASHER 3.04 mm(.1196 in.)  
  5L-6267 [9] WASHER 1.27 mm(.05 in.) thick  
9. 3P-0658 [2] SEAL  
10. 5L-9257 [1] MANIFOLD ASSEM.  
    (Includes)
  9S-4188 [3] PLUG  
  4K-1388 [3] SEAL  
11. 6L-8806 [1] MANIFOLD ASSEM.  
    (Includes)
  9S-1343 [2] PLUG  
12. 5L-2648 [1] BEARING  
13. 4L-3770 [1] RETAINER ASSEM.  
    (Includes)
14. 6F-0984 [1] DOWEL  
15. 5L-2649 [1] BEARING  
16. 5N-3796 [1] SHAFT ASSEM.  
    (Includes)
  4L-6763 [1] GEAR (12 teeth)  
  4L-6764 [1] KEY  
17. 0S-1588 [5] BOLT  
  4M-8974 [1] LOCK (2 hole)  
  5L-4949 [1] LOCK (5 hole)  
18. 4L-6795 [2] GEAR ASSEM. (12 teeth)  
    (Each Includes)
  5L-2650 [2] BEARING  
19. 5L-5982 [2] SHAFT  
20. 7F-8698 [6] BOLT  
21. 5N-3806 [1] HOUSING ASSEM.  
    (Includes)
  5L-2652 [1] BEARING  
22. 5N-3810 [1] GASKET  
23. 8N-1342 [1] COVER  
  1Y-2681 [2] DOWEL 6.35 mm(.25 in.)  
  5M-4987 [2] DOWEL 12.45 mm(.50 in.)  
24. 0L-2070 [2] BOLT  
25. 9S-4190 [1] PLUG  
  7L-2224 [1] SEAL  
26. 9S-4182 [1] PLUG  
  033-5853 [1] SEAL  
27. 0S-1590 [5] BOLT  
28. 1A-2029 [4] BOLT  
29. 0L-1143 [4] BOLT  
30. 9S-1343 [1] PLUG  
 

#UEG0647S0199
 

1W-1873: PUMP GP-ENGINE OIL

1W1873 OIL PUMP GROUP
Serial No. 69B2081 to 69B2144 inclusive
Part of 5N3794 Oil Pump Group shown on Page 50A-3a
c234523 UEG0647S
  For full view, you need register

Parts for your D379A MARINE 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. 4F-7226 [3] BOLT  
8. 8H-3526 [9] WASHER 3.04 mm(.1196 in.)  
  5L-6267 [9] WASHER 1.27 mm(.05 in.) thick  
9. 3P-0658 [2] SEAL  
10. 5L-9257 [1] MANIFOLD ASSEM.  
    (Includes)
  9S-4188 [3] PLUG  
  4K-1388 [3] SEAL  
11. 6L-8806 [1] MANIFOLD ASSEM.  
    (Includes)
  9S-1343 [2] PLUG  
12. 5L-2648 [1] BEARING  
13. 4L-3770 [1] RETAINER ASSEM.  
    (Includes)
14. 6F-0984 [1] DOWEL  
15. 5L-2649 [1] BEARING  
16. 1W-1871 [1] SHAFT ASSEM.  
17. 0S-1588 [5] BOLT  
  4M-8974 [1] LOCK (2 hole)  
  5L-4949 [1] LOCK (5 hole)  
18. 1W-1868 [2] GEAR ASSEM. (12 teeth)  
    (Each Includes)
  5L-2650 [2] BEARING  
19. 5L-5982 [2] SHAFT  
20. 7F-8698 [6] BOLT  
21. 5N-3806 [1] HOUSING ASSEM.  
    (Includes)
  5L-2652 [1] BEARING  
22. 5N-3810 [1] GASKET  
23. 8N-1342 [1] COVER  
  1Y-2681 [2] DOWEL 6.35mm(.25 in.)  
  5M-4987 [2] DOWEL 12.45 mm(.50 in.)  
24. 0L-2070 [2] BOLT  
25. 9S-4190 [1] PLUG  
  7L-2224 [1] SEAL  
26. 9S-4182 [1] PLUG  
  033-5853 [1] SEAL  
27. 0S-1590 [5] BOLT  
28. 1A-2029 [4] BOLT  
29. 0L-1143 [4] BOLT  
30. 9S-1343 [1] PLUG  
 

Information:

Engine News
Specifications
Oil Filter
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
Information Release Memo
APPEARANCE CHANGE ON REMAN SHORT BLOCKS
APPEARANCE CHANGE ON REMAN SHORT BLOCKS
Disassembly and Assembly
Oil Filter Housing
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
Engine Oil Cooler
D379, D398, D399 INDUSTRIAL & MARINE ENGINES
Service Magazine

Caterpillar Parts SIS Catalog D379A :

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