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7N3803 CYLINDER BLOCK GROUP--Field Installation Serial No. 50B1116-Up Note: Converts counterbored cylinder block to spacer plate cylinder block D342C


BASIC ENGINE
CYLINDER BLOCK GP
CYLINDER HEAD GP
CRANKSHAFT GP

MARINE ENGINE D342C MARINE ENGINE 50B
 D342 MARINE ENGINE 50B01025-UP UEG0570S D342C 50B   (1966)

BASIC ENGINE

CYLINDER BLOCK GP
CYLINDER BLOCK ASSEMBLY
7L-3021 CYLINDER BLOCK ASSEMBLY
CYLINDER BLOCK ASSEMBLY GROUP
6N-5399 CYLINDER BLOCK ASSEMBLY GROUP
7N-3803 CYLINDER BLOCK GROUP
CYLINDER BLOCK ASSEMBLY
7N-3035 CYLINDER BLOCK ASSEMBLY
CYLINDER BLOCK AS
8N-4312 CYLINDER BLOCK AS
CYLINDER BLOCK CYLINDER HEAD AND VALVE MECHANISM
6L-2530 CYLINDER BLOCK CYLINDER HEAD AND VALVE MECHANISM
 

#UEG0570S0050
 

7N-3803: CYLINDER BLOCK GROUP

7N3803 CYLINDER BLOCK GROUP--Field Installation
Serial No. 50B1116-Up
Note: Converts counterbored cylinder block to spacer plate cylinder block
UEG0570S0050 UEG0570S
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Parts for your D342C MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  7N-3035 Y [1] CYLINDER BLOCK ASSEMBLY  
    - OR -
  8N-4312 Y [1] CYLINDER BLOCK ASSEMBLY  
  7N-3503 Y [2] CYLINDER HEAD ASSEMBLY  
    - OR -
  8N-6000 Y [2] CYLINDER HEAD ASSEMBLY  
  8N-4810 [2] CYLINDER HEAD GASKET  
  6L-7814 [2] SEAL  
  7B-2420 [2] FERRULE  
  9H-1031 [16] WASHER  
  9H-1024 [26] WASHER  
  1A-7669 [12] BOLT  
  2M-0849 [12] WASHER  
  2B-2391 [2] BOLT  
  1D-4600 [2] BOLT  
  6L-2387 [6] STRAP  
  7N-5379 [1] LIFTING EYE  
  7N-6243 [24] SEAL  
  7N-3841 [1] COUPLING ASSEMBLY  
  7N-3863 [6] ROD  
  7N-8131 [2] SPACER PLATE  
  1D-6260 [16] BOLT  
  1D-4599 [26] BOLT  
  Y   SEPARATE ILLUSTRATION
 

#UEG0570S0051
 

7N-3035: CYLINDER BLOCK ASSEMBLY

7N3035 CYLINDER BLOCK ASSEMBLY
Part of 7N3803 Cylinder Block Group listed on Page 33A
c165904 UEG0570S
7N3035 CYLINDER BLOCK ASSEMBLY Parts scheme
  For full view, you need register

Parts for your D342C MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5F-1914 [4] DOWEL  
2. 3B-0622 [1] PLUG  
3. 2A-3798 [2] DOWEL  
4. 7N-3357 [1] TUBE ASSEM.  
    (Includes)
  5H-4390 [1] SLEEVE  
5. 0L-1547 [1] NUT  
6. 5H-2766 [1] STUD  
7. 2A-3349 [1] FERRULE  
8. 4H-8986 [1] WASHER  
9. 5H-1092 [1] SPACER  
10. 7B-5415 [2] DOWEL  
11. 1A-5919 [2] DOWEL  
12. 1P-0667 [14] STUD  
  1A-5666 [14] NUT  
  4M-6953 [14] WASHER  
13. 4H-9640 [2] BEARING  
14. 8F-6575 [1] PLUG  
15. 0L-1521 [1] PLUG  
16. 5H-2786 [2] TUBE  
17. 5B-5812 [1] DOWEL  
18. 1P-4275 [1] CAP  
19. 1P-4273 [6] CAP  
20. 2B-2994 [2] DOWEL  
21. 0S-0519 [1] PLUG  
22. 8F-8523 [3] BEARING  
23. 4F-6024 [1] DOWEL  
24. 5H-4279 [1] PLUG  
 

#UEG0570S0052
 

8N-4312: CYLINDER BLOCK AS

8N4312 CYLINDER BLOCK ASSEMBLY
Part of 7N3803 Cylinder Block Group listed on Page 33A
c224459 UEG0570S
8N4312 CYLINDER BLOCK AS Parts scheme
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Parts for your D342C MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 5F-1914 [4] DOWEL  
2. 3B-0622 [1] PLUG  
3. 2A-3798 [1] DOWEL  
4. 7N-3357 [1] TUBE ASSEM.  
    (Includes)
  5H-4390 [1] SLEEVE  
5. 0L-1547 [1] NUT  
6. 2B-6296 [1] STUD  
7. 2A-3349 [1] FERRULE  
8. 4H-8986 [1] WASHER  
9. 5H-1092 [1] SPACER  
10. 7B-5415 [2] DOWEL  
11. 1A-5919 [2] DOWEL  
12. 1P-0667 [14] STUD  
  1A-5666 [14] NUT  
  4M-6953 [14] WASHER  
13. 4H-9640 [2] BEARING  
14. 8F-6575 [1] PLUG  
15. 0L-1521 [1] PLUG  
16. 5H-2786 [2] TUBE  
17. 5B-5812 [1] DOWEL  
18. 4S-6836 [1] CAP  
19. 4S-6835 [6] CAP  
20. 2B-2994 [2] DOWEL  
21. 0S-0519 [1] PLUG  
22. 8F-8523 [3] BEARING  
23. 4F-6024 [1] DOWEL  
24. 5H-4279 [1] PLUG  
 

#UEG0570S0053
 

7N-3336: CYLINDER HEAD GP

7N3336 CYLINDER HEAD GROUP
Serial No. 50B1116-Up
7N3503 Cylinder Head parts are shown on Page 33E
c222838 UEG0570S
7N3336 CYLINDER HEAD GP Parts scheme
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Parts for your D342C MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 1A-7669 [12] BOLT  
  2M-0849 [12] WASHER  
2. 7N-3503 Y [2] CYLINDER HEAD ASSEM.  
    (Separate Illustration)
3. 2B-7557 [3] CORK  
4. 3N-1414 [12] SPACER  
5. 7N-7639 C [12] ROTATOR  
6. 9M-5350 [12] SPRING (outer)  
7. 3B-1143 [36] LOCK  
8. 3B-1142 [12] RETAINER  
9. 9M-5349 [12] SPRING (inner)  
10. 1D-4599 C [26] BOLT  
  9H-1024 [26] WASHER  
11. 2P-0484 [6] CHAMBER ASSEM.  
12. 6L-7816 [6] SEAL  
13. 1D-6260 C [16] BOLT  
  9H-1031 [16] WASHER  
14. 9H-1288 [12] STUD  
15. 7B-7770 [2] COVER  
  6H-2007 [2] GASKET  
16. 0L-1351 [4] BOLT  
  5M-2894 [4] WASHER  
17. 7N-6243 [24] SEAL  
18. 1P-6442 [6] GASKET 3.54 mm(.139 in.)  
  1P-6441 [6] GASKET 3.94 mm(.155 in.)  
  5H-2579 [6] GASKET 3.15 mm(.124 in.)  
19. 8H-1993 [6] VALVE (intake)  
20. 8H-1994 [6] VALVE (exhaust)  
21. 7N-3642 [2] GASKET  
22. 9H-1020 [6] STUD  
23. 7B-2420 [2] FERRULE  
  6L-7814 [2] SEAL  
24. 7N-6758 C [6] GASKET 2.90 mm(.114 in.)  
  C   INDICATES CHANGE
  Y   SEPARATE ILLUSTRATION
 

#UEG0570S0054
 

7N-3503: CYLINDER HEAD ASSEMBLY

7N3503 CYLINDER HEAD ASSEMBLY
Replaced by 8N6000 shown on Page 33F
Part of 7N3803 Cylinder Block Group listed on Page 33A
c226227 UEG0570S
7N3503 CYLINDER HEAD ASSEMBLY Parts scheme
  For full view, you need register

Parts for your D342C MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3B-0623 C [15] PLUG  
2. 7N-2051 [6] GUIDE  
3. 5H-7071 [12] DIRECTORS  
4. 8M-9810 [3] INSERT (exhaust)  
    (STANDARD)
  4S-8896 H [3] INSERT  
    0.13 mm(.005 in.) oversize
  4S-8897 H [3] INSERT  
    0.26 mm(.010 in.) oversize
5. 9M-8745 [3] INSERT (intake)  
    (STANDARD)
  4S-8912 H [3] INSERT  
    0.13 mm(.005 in.) oversize
  4S-8913 H [3] INSERT  
    0.26 mm(.010 in.) oversize
6. 0S-1594 C [2] BOLT  
  5M-2894 C [2] WASHER  
7. 5L-1883 C [1] FLANGE  
  6H-2007 C [1] GASKET  
8. 5M-6214 C [1] PLUG  
  C   INDICATES CHANGE
  H   NOT PART OF 7N3503 CYLINDER HE
 

#UEG0570S0055
 

8N-6000: CYLINDER HEAD ASSEMBLY

8N6000 CYLINDER HEAD ASSEMBLY
Serial No. 50B1116-Up
Part of 7N3803 Cylinder Block Group listed on Page 33A
c226228 UEG0570S
8N6000 CYLINDER HEAD ASSEMBLY Parts scheme
  For full view, you need register

Parts for your D342C MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
1. 3B-0623 [14] PLUG  
2. 7N-2051 [6] GUIDE  
3. 5H-7071 [12] DIRECTOR  
4. 8M-9810 [3] INSERT (exhaust)  
    (STANDARD)
  4S-8896 H [3] INSERT  
    0.13 mm(.005 in.) oversize
  4S-8897 H [3] INSERT  
    0.26 mm(.010 in.) oversize
5. 9M-8745 [3] INSERT (intake)  
    (STANDARD)
  4S-8912 H [3] INSERT  
    0.13 mm(.005 in.) oversize
  4S-8913 H [3] INSERT  
    0.26 mm(.010 in.) oversize
6. 0S-1594 [2] BOLT  
  5M-2894 [2] WASHER  
7. 5L-1883 [1] FLANGE  
  6H-2007 [1] GASKET  
8. 5M-6214 [1] PLUG  
  H   NOT PART OF 8N6000 CYLINDER HE
 

#UEG0570S0056
 

7L-2970: CRANKSHAFT

CRANKSHAFT (7L2970 N/S)
Serial No. 50B1025 to 50B1100 inclusive
c120180 UEG0570S
7L2970 CRANKSHAFT Parts scheme
  For full view, you need register

Parts for your D342C MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  0L-1351 [12] BOLT  
  7H-3070 [6] LOCK  
  1S-8607 [1] BAFFLE  
  5H-2669 [1] GASKET  
  4S-7436 R [1] CRANKSHAFT ASSEM.  
  4S-6581 [6] BEARING  
  4S-7793 [1] THROWER  
  2S-2059 [1] RING  
  4S-6582 [1] BEARING  
  4S-9354 [1] SCREW  
  0S-1587 [12] BOLT  
  3B-4508 [12] LOCKWASHER  
  2S-1509 [1] SEAL  
  4S-7863 [1] GEAR (40 TEETH)  
  0S-1604 [8] BOLT  
  4S-7864 [4] LOCK  
    (PARTS OF CRANKSHAFT ASSEM. 4S7436)
  3L-6728 [1] DAMPER  
  7L-2935 [1] HUB  
  2B-4705 [1] BOLT  
  0L-1865 [1] LOCK  
  R   REMFG PART MAY BE AVAILABLE
 

#UEG0570S0057
 

7L-2970: CRANKSHAFT

CRANKSHAFT (7L2970 N/S)
Effective with Serial No. 50B1101
c120181 UEG0570S
7L2970 CRANKSHAFT Parts scheme
  For full view, you need register

Parts for your D342C MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  0L-1351 [12] BOLT  
  7H-3070 [6] LOCK  
  1S-8607 [1] BAFFLE  
  5H-2669 [1] GASKET  
  4S-7436 R [1] CRANKSHAFT ASSEM.  
  4S-6581 [6] BEARING  
  4S-7793 [1] THROWER  
  7S-0662 [1] RING  
  4S-6582 [1] BEARING  
  5S-8112 [1] PLATE ASSEM.  
  2H-1190 [1] DOWEL  
    (PART OF PLATE ASSEM. 5S8112)
  0S-1587 [12] BOLT  
  3B-4508 [12] LOCKWASHER  
  2S-1509 [1] SEAL  
  4S-7863 [1] GEAR (40 TEETH)  
  0S-1604 [8] BOLT  
  4S-7864 [4] LOCK  
    (PARTS OF CRANKSHAFT ASSEM. 4S7436)
  3L-6728 [1] DAMPER  
  7L-2935 [1] HUB  
  5S-8097 [1] LOCK  
  5S-8096 [1] BOLT  
  R   REMFG PART MAY BE AVAILABLE
 

#UEG0570S0058
 

7N-0142: CRANKSHAFT SEAL GROUP

7N142 CRANKSHAFT SEAL GROUP--Front
Provides Field Replacement for 2S1509 Seal shown on Pages 34 & 35
UEG0570S0058 UEG0570S
  For full view, you need register

Parts for your D342C MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
  9J-0110 [1] SLEEVE  
  9N-2539 [1] SEAL  
 

#UEG0570S0059
 

4S-9387: CRANKSHAFT BEARING REPLACEMENT GROUPS

4S9387 FOR USE WITH STANDARD CRANKSHAFT
CRANKSHAFT BEARING REPLACEMENT GROUPS
UEG0570S0059 UEG0570S
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Parts for your D342C MARINE ENGINE:

CATERPILLAR SIS
Pos. Part No Qty Parts name Comments
    Complete set of Bearing Assemblies as shown with Standard Crankshaft
 

Information:

Engine News
Information About The Use Of Earlier Cylinder Heads And Liners With Spacer Plate Cylinder Blocks; List Of Earlier Articles
1979/03/14
New Cylinder Block Has More Material Around Liner Seat Area
1979/11/28
In The Future, Oversize And Undersize Connecting Rod And Main Bearings Will Have Size Identification Marks In Metric Units
1980/07/09
Correct Installation Of Inserts Necessary During Repairs To Prevent More Counterbore Cracks
1981/04/01
6V4133 Wedge Bracket Makes Cylinder Liner Removal Easier
1981/07/15
Inspection Marks On Bearings
1982/05/12
Information Available For The Installation Of Inserts In Cylinder Blocks And Spacer Plates
1982/08/25
New Main And Connecting Rod Bearings Have A Thicker Layer Of Lead-Tin Overlay (Surface Material)
1982/08/25
Use FT1711 Light Table For Cylinder Liner Inspection
1982/12/15
New 6V7059 Micrometer Measures Liner Top Flange And Valve Lip
1982/12/15
Procedure To Clean Oil Passages In Crankshafts And Cylinder Blocks
1983/05/25
Substantial Price Reduction For Caterpillar Remanufactured Short Blocks
1985/06/01
Substantial Price Reduction For Caterpillar Remanufactured Short Blocks
1985/08/01
Main And Connecting Rod Bearing Part Numbers
1987/01/01
Improved Cylinder Block With Spacer Plates Used With Improved Cylinder Heads And Cylinder Head Gaskets
1977/08/24
Use Only The Larger Size Inserts To Make A Repair To Cylinder Block Counterbores For Cylinder Liners
1977/09/28
5P8665 Cylinder Liner Puller Makes Liner Removal Easier And Faster
1978/01/18
Use New Tools To Adapt Former Cylinder Heads With Counterbores To Cylinder Blocks With Spacer Plates
1978/05/24
Use New Main Bearings In Replacement Cylinder Blocks
1978/07/05
Change In Procedure To Check Main Bearing Clearance
1978/08/30
Special Instruction
Pressure Lubrication Procedure for Remanufactured Engines and Short Blocks{1000, 1200, 1020}
Pressure Lubrication Procedure for Remanufactured Engines and Short Blocks{1000, 1200, 1020}
Installation Of Cylinder Block Service Groups And Cylinder Block Hardware Kits{1201}
Installation Of Cylinder Block Service Groups And Cylinder Block Hardware Kits{1201}
Use Of 5P8709 Tool Group For Alignment Of Piston Cooling Jets{1331}
Use Of 5P8709 Tool Group For Alignment Of Piston Cooling Jets{1331}
Reconditioning Of Cylinder Heads For Use On Spacer Plate Cylinder Blocks{1101}
Reconditioning Of Cylinder Heads For Use On Spacer Plate Cylinder Blocks{1101}
Installation Of Crankshaft Seals And Wear Sleeves{1203}
Installation Of Crankshaft Seals And Wear Sleeves{1203}
Use Of 1P4000 Line Boring Tool Group{0672, 1201, 1203}
Use Of 1P4000 Line Boring Tool Group{0672, 1201, 1203}
Installing Heli-Coil Inserts In Caterpillar Cylinder Heads{1117}
Installing Heli-Coil Inserts In Caterpillar Cylinder Heads{1117}
Pressure Lubrication Procedure For Remanufactured Engines And Short Blocks{1000, 1201}
Pressure Lubrication Procedure For Remanufactured Engines And Short Blocks{1000, 1201}
Use Of 6V4840 Tool Group To Install Water Ferrules{1201}
Use Of 6V4840 Tool Group To Install Water Ferrules{1201}
Cylinder Block Cleaning Procedure{1201}
Cylinder Block Cleaning Procedure{1201}
Using 5P4175 Boring Tool Group And 5P1618 Tool Arrangement{0672, 1200}
Using 5P4175 Boring Tool Group And 5P1618 Tool Arrangement{0672, 1200}
Reuse And Salvage Guidelines
Reuse and Salvage for 3176, 3300, 3400 & C-Series Engine Cylinder Blocks {0670, 0672, 0761, 1201, 7225}
Reuse and Salvage for 3176, 3300, 3400 & C-Series Engine Cylinder Blocks {0670, 0672, 0761, 1201, 7225}
Service Magazine
Correct Installation Of Inserts Necessary During Repairs To Prevent More Counterbore Cracks{1217,1201}
1981/03/09
Use Of A Flex-Hone For Cylinder Liner Reconditioning{0664,0674,1216}
1981/12/21
Use New Special Instruction To Install 5P6595 Insert In Cylinder Liner Seats{1216,0621}
1982/05/03
Inspection Marks On Bearings{7551,1230,1226,1203,1219,1227}
1982/05/03
Information Available For The Installation Of Inserts In Cylinder Blocks And Spacer Plates{1217,1201,0664}
1982/07/05
Service Information For Easier Use Of The 6V3100 Timing Indicator Group{0651,1250,1156,1157}
1982/10/11
Use FT1711 Light Table For Cylinder Liner Inspection {0652,1216}
1982/11/29
New 6V7059 Micrometer Measures Liner Top Flange And Valve Lip {0653,1216,1105}
1982/11/29
Procedure To Clean Oil Passages In Crankshafts And Cylinder Blocks{0622,0675,1201,1202}
1983/05/16
Reuse Of Engine Bearings{1230}
1983/05/16
Reuse Of Engine Bearings{1230,1219,1203}
1983/11/21
Determining The Cause Of Glow Plug Tip Failures{1053,1105,1412}
1986/06/02
Bearing Failures On Engines Due To Lack Of Lubrication{1230,1219,1203,1202}
1986/09/08
New Indicator Instrument Group Available To Measure Crankcase Blowby And Radiator Air Velocity{0781,1200,1350}
1986/10/27
Improved Cylinder Block With Spacer Plates Used With Improved Cylinder Heads And Cylinder Head Gaskets{1101,1201,1221}
1977/08/29
Use Only The Larger Size Inserts To Make A Repair To Cylinder Block Counterbores For Cylinder Liners{1201,1216,1217}
1977/10/10
Main And Connecting Rod Bearing Part Numbers {1203,1219,1230}
1987/01/26
Additional Guidelines For Using The 8T2700 Blowby/Air Flow Indicator Group {0781,1200,1350}
1987/07/20
5P8665 Cylinder Liner Puller Makes Liner Removal Easier And Faster{0621,1216}
1978/01/09
Use New Tools To Adapt Former Cylinder Heads With Counterbores To Cylinder Blocks With Spacer Plates{0600,1100,1101,1201}
1978/05/22
Use New Main Bearings In Replacement Cylinder Blocks{1203,1201}
1978/06/12
New Information On Reusable Cylinder Liners{1216}
1978/06/19
Change In Procedure To Check Main Bearing Clearance{1203}
1978/08/28
Information About The Use Of Earlier Cylinder Heads And Liners With Spacer Plate Cylinder Blocks; List Of Earlier Articles{0600,1101,1162,1201,1216,1221}
1979/03/26
New Centering Rings For Oversized Main Bearings{0665,1230}
1979/06/04
Why Engines Are Damaged By Fuel Sulfur{1104,1216,1280,1318,1215}
1979/08/27
New Liner Seat Inserts For Spacer Plate Cylinder Blocks Are Made Of Stainless Steel{1217,1201,0663}
1979/10/01
New Cylinder Block Has More Material Around Liner Seat Area{1201}
1979/11/26
Fuel Sulfur-Your Diesel's Silent Enemy{0375,1280}
1979/12/17

Caterpillar Parts SIS Catalog D342C :

CYLINDER BLOCK ASSEMBLY GROUP
6N-5399 CYLINDER BLOCK ASSEMBLY GROUP
CYLINDER BLOCK ASSEMBLY
7L-3021 CYLINDER BLOCK ASSEMBLY
CYLINDER BLOCK ASSEMBLY
7L-3021 CYLINDER BLOCK ASSEMBLY
CYLINDER BLOCK ASSEMBLY
5S-1690 CYLINDER BLOCK ASSEMBLY
CYLINDER BLOCK ASSEMBLY
5S-1690 CYLINDER BLOCK ASSEMBLY
CYLINDER BLOCK AND COVERS
7L-2972 CYLINDER BLOCK AND COVERS
CYLINDER BLOCK AND COVERS
7L-2972 CYLINDER BLOCK AND COVERS
CYLINDER BLOCK AND COVERS GROUP
7L-2972 CYLINDER BLOCK AND COVERS GROUP
CYLINDER BLOCK ASSEMBLY
7N-3035 CYLINDER BLOCK ASSEMBLY
CYLINDER BLOCK AS
8N-4312 CYLINDER BLOCK AS
CYLINDER HEAD GP
7N-3336 CYLINDER HEAD GP
CYLINDER HEAD ASSEMBLY
7N-3503 CYLINDER HEAD ASSEMBLY
CYLINDER HEAD ASSEMBLY
8N-6000 CYLINDER HEAD ASSEMBLY
CRANKSHAFT
7L-2970 CRANKSHAFT
CRANKSHAFT
7L-2970 CRANKSHAFT
7N-0142 CRANKSHAFT SEAL GROUP

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