BASIC ENGINE
CYLINDER BLOCK GPCRANKSHAFT GP
BASIC ENGINE
CYLINDER BLOCK GP#UEG0647S0080
3N-2677: CYLINDER BLOCK & COVERS GP
3N2677 CYLINDER BLOCK AND COVERS GROUP--Front View--Part 1 of 2
Serial No. 69B2145-Up
Serial No. 69B2145-Up
Parts for your D379A MARINE ENGINE:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1A-1135 | [4] | BOLT | ||
| 2A-4462 | [2] | LOCK | ||
| 8N-4708 | [8] | BAND | ||
| 8L-4857 | [4] | COVER | ||
| 1F-4419 | [4] | GASKET | ||
| 0S-0509 | [42] | BOLT | ||
| 19.05 mm(.75 in.) long | ||||
| 3B-4506 | [42] | LOCKWASHER | ||
| 6L-7815 | [24] | SEAL | ||
| 8N-9174 | [8] | LINER | ||
| 1A-9759 | [8] | DOWEL | ||
| 2N-4518 | [1] | PLATE ASSEM. | ||
| 2N-4516 | [1] | ADAPTER | ||
| (PART OF 2N4518 ASSEM.) | ||||
| 8F-8145 | [1] | FLANGE | ||
| 1F-3131 | [1] | GASKET | ||
| 1B-5174 | [1] | PLUG | ||
| 0S-1588 | [2] | BOLT | ||
| 3B-4506 | [2] | LOCKWASHER | ||
| 1F-4418 | [3] | COVER | ||
| 1F-9223 | [3] | GASKET | ||
| 5F-0304 | [1] | PLUG | ||
| 5B-8932 | [1] | GASKET | ||
| 0S-0509 CH | [3] | BOLT | ||
| 3B-4506 CH | [3] | LOCKWASHER | ||
| 0S-0509 C | [60] | BOLT | ||
| 3B-4506 C | [60] | LOCKWASHER | ||
| 6L-2787 | [1] | HOUSING | ||
| (FLYWHEEL) | ||||
| C | INDICATES CHANGE | |||
| H | USE AS REQUIRED | |||
#UEG0647S0081
3N-2677: CYLINDER BLOCK & COVERS GP
3N2677 CYLINDER BLOCK AND COVERS GROUP--Side View--Part 2 of 2
Serial No. 69B2145-Up
Serial No. 69B2145-Up
Parts for your D379A MARINE ENGINE:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 4L-6788 | [64] | STUD | ||
| 5L-2894 | [5] | BEARING | ||
| (Parts of 3N6988 & 3N6990 Assem.) | ||||
| 9S-1366 | [2] | BOLT | ||
| 3B-4508 | [2] | LOCKWASHER | ||
| 5N-3275 | [1] | GASKET | ||
| 0L-1351 | [4] | BOLT | ||
| 3B-4506 | [4] | LOCKWASHER | ||
| 5F-9303 | [2] | COVER | ||
| 1F-3131 | [2] | GASKET | ||
| 3B-0551 | [2] | PLUG | ||
| 1A-0168 | [6] | BOLT | ||
| 3B-4508 | [6] | LOCKWASHER | ||
| 9M-7269 | [2] | BOLT | ||
| 3B-4508 | [2] | LOCKWASHER | ||
| 4F-2609 | [1] | DOWEL | ||
| 7L-2593 | [1] | SHAFT ASSEM | ||
| 3F-6795 | [1] | PIN | ||
| 0L-2061 | [2] | DOWEL (875" LONG) | ||
| 2B-2994 | [2] | DOWEL (150" LONG) | ||
| (Parts of 3N6988 & 3N6990 Assem.) | ||||
| 7F-7669 | [1] | GASKET | ||
| 7F-7670 | [1] | COVER | ||
| 0L-1351 | [4] | BOLT | ||
| 4L-4653 | [2] | PLATE | ||
| 1A-8537 | [8] | BOLT | ||
| 3B-4510 | [14] | LOCKWASHER | ||
| 8S-9092 | [6] | BOLT | ||
| 2N-7193 | [2] | CAP | ||
| 1A-9759 | [8] | DOWEL | ||
| (Parts of 3N6988 & 3N6990 Assem.) | ||||
| 1F-4418 | [1] | COVER | ||
| 1F-9223 | [1] | GASKET | ||
| 2A-3348 | [1] | DOWEL | ||
| 1A-2223 | [16] | DOWEL (1" LONG) | ||
| 6B-6863 C | [4] | DOWEL (50" LONG) | ||
| (Parts of 3N6988 & 3N6990 Assem.) | ||||
| 2N-5120 | [10] | STUD | ||
| 3S-1356 | [10] | NUT | ||
| (Parts of 3N6988 & 3N6990 Assem.) | ||||
| 2N-7194 | [3] | CAP | ||
| (Part of 3N6988 & 3N6990 Assem.) | ||||
| 3N-6988 | [1] | BLOCK ASSEM. | ||
| (For Use With Compression Release) | ||||
| -OR- | ||||
| 3N-6990 | [1] | BLOCK ASSEM. | ||
| (For Use Without Compression Release) | ||||
| 5H-4279 | [4] | PLUG | ||
| 1H-8645 | [2] | SCREW | ||
| 2A-3278 | [2] | GASKET | ||
| (PARTS OF 3N6988 ASSEM.) | ||||
| 4L-7586 | [1] | GASKET | ||
| 5M-6213 | [2] | PLUG | ||
| (Part of 3N6988 & 3N6990 Assem.) | ||||
| 4L-3395 | [2] | DOWEL | ||
| 7L-2593 | [1] | SHAFT ASSEM. | ||
| 7F-9504 | [2] | DOWEL | ||
| 4F-2609 | [1] | PIN (437" LONG) | ||
| 3F-6795 | [1] | PIN | ||
| (Parts of 3N6988 & 3N6990 Assem.) | ||||
#UEG0647S0082
4L-8791: CRANKSHAFT GP
4L8791 CRANKSHAFT GROUP--TYPE 1
Serial No. 69B1227 To 69B1662 And 69B1883 To 69B1918
And 69B2076 To 69B2152 inclusive
Serial No. 69B1227 To 69B1662 And 69B1883 To 69B1918
And 69B2076 To 69B2152 inclusive
Parts for your D379A MARINE ENGINE:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 0S-1594 | [24] | BOLT | ||
| 3B-4506 | [24] | LOCKWASHER | ||
| 7L-2534 | [2] | RING | ||
| 5L-7856 | [1] | THROWER | ||
| 2N-7048 | [5] | BEARING (STANDARD) | ||
| 5L-4184 | [5] | BEARING (050" UNDERSIZE) | ||
| 5L-2093 | [2] | GASKET | ||
| 8L-3972 | [2] | BAFFLE | ||
| 8L-9802 | [8] | PLUG | ||
| (PART OF 5L6286 ASSEM.) | ||||
| 8L-9835 | [8] | RING (SNAP) | ||
| 0L-1024 | [8] | PLUG | ||
| (PART OF CRANKSHAFT ASSEM. 5L6286) | ||||
| 5L-6286 | [1] | CRANKSHAFT ASSEM. | ||
| 5L-1857 | [1] | ADAPTER | ||
| 3N-3234 C | [2] | RING | ||
| 5L-7858 | [1] | THROWER | ||
| 6F-7035 | [10] | BOLT | ||
| 3B-4514 | [10] | LOCKWASHER | ||
| C | INDICATES CHANGE | |||
#UEG0647S0083
4L-8791: CRANKSHAFT GP
4L8791 CRANKSHAFT GROUP--TYPE 2
Serial No. 69B1227 To 69B1662 And 69B1883 To 69B1918 And
69B2076 To 69B2152 inclusive
Serial No. 69B1227 To 69B1662 And 69B1883 To 69B1918 And
69B2076 To 69B2152 inclusive
Parts for your D379A MARINE ENGINE:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 8L-3972 | [2] | BAFFLE | |
| 2. | 3N-3234 | [2] | RING | |
| 3. | 3N-9160 C | [2] | RING | |
| 4. | 3N-7326 C | [1] | THROWER | |
| 5. | 8N-7764 C | [5] | BEARING (Standard) | |
| 8N-7765 AB | BEARING-MAIN (0.63-U.S.) | |||
| 8N-7766 AB | BEARING-MAIN (1.27-U.S.) | |||
| 8N-7767 AB | BEARING-MAIN (0.63-O.S.) | |||
| 8N-7768 AB | BEARING-MAIN (0.63-U.S.-0.63-O.S.) | |||
| 2N-7117 C | [5] | BEARING (.050" Undersize) | ||
| 6. | 3N-2957 RC | [1] | CRANKSHAFT ASSEM. | |
| (Includes) | ||||
| 7. | 5P-3476 | [4] | BOLT | |
| 8. | 7B-0537 | [8] | DOWEL | |
| 9. | 5L-2683 | [8] | BOLT | |
| 10. | 3N-7327 C | [1] | THROWER | |
| 11. | 5L-1857 | [1] | ADAPTER | |
| 12. | 6F-7035 | [10] | BOLT | |
| 3B-4514 | [10] | LOCKWASHER | ||
| 13. | 0S-1594 | [24] | BOLT | |
| 3B-4506 | [24] | LOCKWASHER | ||
| 14. | 5L-2093 | [2] | GASKET | |
| A | NOT PART OF THIS GROUP | |||
| B | USE AS REQUIRED | |||
| C | INDICATES CHANGE | |||
| R | REMFG PART MAY BE AVAILABLE | |||
#UEG0647S0084
4W-2574: CRANKSHAFT GP
4W2574 CRANKSHAFT GROUP
Serial No. 69B2153-Up
Serial No. 69B2153-Up
Parts for your D379A MARINE ENGINE:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 4W-2567 | [1] | ADAPTER-SEAL | |
| 2. | 4W-2607 | [1] | SEAL GP-CRANKSHAFT | |
| 3. | 4W-2566 | [1] | ADAPTER-SEAL | |
| 4. | 4W-2606 | [1] | SEAL GP-CRANKSHAFT | |
| 5. | 8N-7764 | [5] | BEARING-MAIN (STANDARD) | |
| 8N-7765 AB | BEARING-MAIN (0.63-U.S.) | |||
| 8N-7766 AB | BEARING-MAIN (1.27-U.S.) | |||
| 8N-7767 AB | BEARING-MAIN (0.63-O.S.) | |||
| 8N-7768 AB | BEARING-MAIN (0.63-U.S.-0.63-O.S.) | |||
| 2N-7117 | [5] | BEARING 1.27MM(.05IN)U.S. | ||
| 6. | 3N-2957 R | [1] | CRANKSHAFT AS | |
| 5L-2662 | [4] | COUNTERWEIGHT | ||
| 7. | 5P-3476 | [4] | BOLT-SOCKET HEAD | |
| 8. | 7B-0537 | [8] | DOWEL | |
| 9. | 5L-2683 | [8] | BOLT | |
| 10. | 5L-2093 | [2] | GASKET | |
| 11. | 3N-7821 | [1] | ADAPTER | |
| 12. | 6F-7035 | [10] | BOLT | |
| 13. | 0S-1594 | [24] | BOLT | |
| [1] | FORM | |||
| INSTALLATION OF | ||||
| CRANKSHAFT SEAL) | ||||
| A | NOT PART OF THIS GROUP | |||
| B | USE AS REQUIRED | |||
| R | REMFG PART MAY BE AVAILABLE | |||
#UEG0647S0085
3N-7968: CRANKSHAFT GROUP
3N7968 CRANKSHAFT GROUP
Serial No. 69B1663 to 69B1882 and 69B1919 to 69B1964 inclusive
Serial No. 69B1663 to 69B1882 and 69B1919 to 69B1964 inclusive
Parts for your D379A MARINE ENGINE:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 3N-3168 | [1] | ADAPTER | |
| 2. | 3N-3166 | [2] | SEAL | |
| 3. | 3N-7311 | [2] | SLEEVE | |
| 3N-8049 | [1] | LOCKTITE KIT | ||
| 4. | 7D-1979 | [2] | SEAL | |
| 5. | 2N-7048 | [5] | BEARING | |
| 6. | 3N-2957 R | [1] | CRANKSHAFT ASSEM. | |
| (Includes) | ||||
| 7. | 5P-3476 | [4] | BOLT | |
| 8. | 7B-0537 | [8] | DOWEL | |
| 9. | 5L-2683 | [8] | BOLT | |
| 10. | 3N-3170 | [1] | ADAPTER | |
| 11. | 1A-9579 | [8] | BOLT | |
| 3B-4505 | [8] | LOCKWASHER | ||
| 3N-3333 | [8] | SPACER | ||
| 12. | 3N-7821 | [1] | ADAPTER | |
| 13. | 6F-7035 | [10] | BOLT | |
| 3B-4514 | [10] | LOCKWASHER | ||
| 14. | 0S-1594 | [24] | BOLT | |
| 3B-4506 | [24] | LOCKWASHER | ||
| 15. | 5L-2093 | [2] | GASKET | |
| 16. | 6K-4936 | [8] | BOLT | |
| 3F-1417 | [8] | WASHER | ||
| R | REMFG PART MAY BE AVAILABLE | |||
#UEG0647S0086
3N-7968: CRANKSHAFT GROUP
3N7968 CRANKSHAFT GROUP
Serial No. 69B1965 to 69B2075 inclusive
Serial No. 69B1965 to 69B2075 inclusive
Parts for your D379A MARINE ENGINE:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 8L-3972 C | [1] | BAFFLE | |
| 2. | 3N-3166 C | [1] | SEAL | |
| 3. | 3N-7311 C | [1] | SLEEVE | |
| 3N-8049 | [1] | LOCKTITE KIT | ||
| 4. | 7D-1979 C | [1] | SEAL | |
| 5. | 2N-7048 | [5] | BEARING | |
| 6. | 3N-2957 R | [1] | CRANKSHAFT ASSEM. | |
| (Includes) | ||||
| 7. | 5P-3476 | [4] | BOLT | |
| 8. | 7B-0537 | [8] | DOWEL | |
| 9. | 5L-2683 | [8] | BOLT | |
| 10. | 3N-3170 | [1] | ADAPTER | |
| 11. | 1A-9579 | [8] | BOLT | |
| 3B-4505 | [8] | LOCKWASHER | ||
| 3N-3333 | [8] | SPACER | ||
| 12. | 3N-7821 | [1] | ADAPTER | |
| 13. | 6F-7035 | [10] | BOLT | |
| 3B-4514 | [10] | LOCKWASHER | ||
| 14. | 0S-1594 | [24] | BOLT | |
| 3B-4506 | [24] | LOCKWASHER | ||
| 15. | 5L-2093 | [2] | GASKET | |
| 16. | 3N-3234 C | [1] | RING | |
| 17. | 3N-9160 C | [1] | RING | |
| 18. | 3N-7326 C | [1] | THROWER | |
| C | INDICATES CHANGE | |||
| R | REMFG PART MAY BE AVAILABLE | |||
#UEG0647S0087
3N-8008: SEAL GP-CRANKSHAFT CONVERSION
3N8008 CRANKSHAFT CONVERSION SEAL GROUP--Front
Serial No. 69B1227 to 69B1662 inclusive
FIELD INSTALLATION
Serial No. 69B1227 to 69B1662 inclusive
FIELD INSTALLATION
Parts for your D379A MARINE ENGINE:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 5L-2093 | [1] | GASKET | |
| 2. | 3N-3170 | [1] | ADAPTER | |
| 3. | 3N-7821 H | [1] | ADAPTER | |
| (Use with 5L1857 Adapter) | ||||
| 3N-7822 H | [1] | ADAPTER | ||
| (Use with 4L8819 Adapter) | ||||
| 3N-7823 H | [1] | ADAPTER | ||
| (Use with 7L2571 Adapter) | ||||
| 4. | 1A-9579 | [8] | BOLT | |
| 3B-4505 | [8] | LOCKWASHER | ||
| 3N-3333 | [8] | SPACER | ||
| 5. | 7D-1979 | [1] | SEAL | |
| 6. | 3N-7311 | [1] | SLEEVE | |
| 7. | 3N-3166 | [1] | SEAL | |
| 8. | 8S-4754 J | [4] | BOLT .875 in.(2.22 cm) diameter | |
| 8S-4755 | [4] | BOLT 1 in.(2.54 cm) diameter | ||
| (Use as Required) | ||||
| 9. | 5P-3022 J | [1] | INSTALLER | |
| THE FOLLOWING REPAIR KIT IS AVAILABLE: | ||||
| 3N-8049 | [1] | LOCTITE KIT (service) | ||
| H | NOT PART OF 3N8008 SEAL GROUP | |||
| J | USE TO INSTALL WEAR SLEEVE | |||
#UEG0647S0088
3N-8000: SEAL GP-CRANKSHAFT CONVERSION
3N8000 CRANKSHAFT CONVERSION SEAL GROUP--Rear
FIELD INSTALLATION
FIELD INSTALLATION
Parts for your D379A MARINE ENGINE:
CATERPILLAR SIS| Pos. | Part No | Qty | Parts name | Comments |
|---|---|---|---|---|
| 1. | 5L-2093 | [1] | GASKET | |
| 2. | 3N-3168 | [1] | ADAPTER | |
| 3. | 6K-4936 | [8] | BOLT | |
| 3F-1417 | [8] | WASHER | ||
| 4. | 7D-1979 | [1] | SEAL | |
| 5. | 3N-7311 | [1] | SLEEVE | |
| 6. | 3N-3166 | [1] | SEAL | |
| 7. | 5P-3022 H | [1] | INSTALLER | |
| 8. | 8S-4754 H | [1] | BOLT .875 in. (2.22 cm) diameter | |
| 8S-4755 H | [1] | BOLT 1 in. (2.54 cm) diameter | ||
| (Use as required) | ||||
| THE FOLLOWING REPAIR KIT IS AVAILABLE: | ||||
| 3N-8049 | [1] | LOCTITE KIT (service) | ||
| H | USED TO INSTALL WEAR SLEEVE | |||
#UEG0647S0089
4W-2571: SEAL GP-CRANKSHAFT CONVERSION
4W2571 CRANKSHAFT CONVERSION SEAL GP-REAR-OPPOSITE ROTATION
Field Installation
Field Installation
Parts for your D379A MARINE ENGINE:
CATERPILLAR SISInformation:
BASIC ENGINE
CYLINDER BLOCK GP
Engine News
Correct Installation Of Inserts Necessary During Repairs To Prevent More Counterbore Cracks
1981/04/01
1981/04/01
Information Available For The Installation Of Inserts In Cylinder Blocks And Spacer Plates
1982/08/25
1982/08/25
New Sealant Used Between The Fuel Injection Pump/Governor Drive Housing And Cylinder Block
1983/02/16
1983/02/16
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}
Pressure Lubrication Procedure for Remanufactured Engines and Short Blocks{1000, 1200, 1020}
Installation Of 1W6265, 1W6266 And 1W6267 Insert For Cylinder Liner Seat{1217}
Installation Of 1W6265, 1W6266 And 1W6267 Insert For Cylinder Liner Seat{1217}
Installation Of 1W6265, 1W6266 And 1W6267 Insert For Cylinder Liner Seat{1217}
Use Of 5P8709 Tool Group For Alignment Of Piston Cooling Jets{1331}
Use Of 5P8709 Tool Group For Alignment Of Piston Cooling Jets{1331}
Use Of 5P8709 Tool Group For Alignment Of Piston Cooling Jets{1331}
Installation Of Crankshaft Seals And Wear Sleeves{1203}
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}
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}
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}
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}
Use Of 6V4840 Tool Group To Install Water Ferrules{1201}
Installation Of Engine Block, Support Rails And/Or Oil Pan Base Assembly{1154, 1201, 1302}
Installation Of Engine Block, Support Rails And/Or Oil Pan Base Assembly{1154, 1201, 1302}
Installation Of Engine Block, Support Rails And/Or Oil Pan Base Assembly{1154, 1201, 1302}
Using 5P4175 Boring Tool Group And 5P1618 Tool Arrangement{0672, 1200}
Using 5P4175 Boring Tool Group And 5P1618 Tool Arrangement{0672, 1200}
Using 5P4175 Boring Tool Group And 5P1618 Tool Arrangement{0672, 1200}
Specifications
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}
Reuse and Salvage for 3176, 3300, 3400 & C-Series Engine Cylinder Blocks {0670, 0672, 0761, 1201, 7225}
Disassembly and Assembly
Service Magazine
Some Nuts Used On Main Bearing Caps Are Smaller Than Standard Size Across The Flat Sides{1203}
1980/07/14
1980/07/14
New Main Bearings And Connecting Rod Bearings Have Thicker Layer Of Surface Material{1230,1203,1219}
1982/02/22
1982/02/22
Service Information For Easier Use Of The 6V3100 Timing Indicator Group{0651,1250,1156,1157}
1982/10/11
1982/10/11
New Sealant Used Between The Fuel Injection Pump/Governor Drive Housing And Cylinder Block{1288}
1983/01/17
1983/01/17
Additional Guidelines For Using The 8T2700 Blowby/Air Flow Indicator Group {0781,1200,1350}
1987/07/20
1987/07/20