- Engine:
- 3412 (S/N: 60M1-UP)
- 3412C (S/N: 60M1-UP)
Introduction
This Special Instruction is intended to provide information on the Engine Overhaul Kit Consist and detailed information on specific parts that should be used based on engine arrangements.
This Engine Overhaul Kit may contain extra parts and extra quantities due to the variety of engine arrangements assigned to a given kit. Refer to the corresponding Parts Manual or Disassembly and Assembly manual in Table 1.
Note: This Kit may contain upgraded parts. These upgraded part numbers may be different than what you have in the parts manual or engine, but these parts have been technically reviewed for compatibility with your application.
Note: This kit contains gasket kits and includes additional parts needed to perform an engine overhaul.
Note: This Kit may contain upgraded parts. These upgraded part numbers may be different than what you have in the parts manual or engine, but these parts have been technically reviewed for compatibility with your application.
Note: For more information, visit us at: electricpowersupport.cat.com.
Note: For assistance with technical questions, contact your local Cat dealer.
Reference Material
| Engine Model | Engine Arrangements | Engine Serial Number Prefix | Parts Book Media | Disassembly and Assembly Media |
| 3412 | 179-0769 179-0770 179-0771 |
S/N:60M | SEBP3179 | SENR7410 |
Note: For ordering reference material, contact your local Cat dealer.
3412 460-9351 Major Overhaul Kit Consist
| 460-9351 Major Overhaul Kit Consist | ||
| Gasket Kits | ||
| Part Number | Part Name | Qty |
| 460-4768 | Single Cylinder Head Gasket Kit | 2 |
| 421-8976 | Oil Cooler and Lines Gasket Kit | 1 |
| 454-4763 | Front Structure Gasket Kit | 1 |
| 460-5277 | Central and Lower Structure Gasket Kit | 1 |
| 419-8267 | Rear Structure Gasket Kit | 1 |
| 219-6544 | After Cooler and Lines Gasket Kit | 1 |
| Additional Parts Included in This Kit | ||
| Part Number | Part Name | Qty |
| 1L-8212 | Gasket | 1 |
| 1R-0749 | Fuel Filter | 2 |
| 1R-1808 | Engine Oil Filter | 2 |
| 1S-0004 | O-Ring Seal | 2 |
| 2N-0931 | Gasket | 3 |
| 2N-2766 | Locknut | 24 |
| 2P-8643 | Gasket | 1 |
| 3D-2824 | O-Ring Seal | 3 |
| 3J-1907 | O-Ring Seal | 10 |
| 3J-7354 | O-Ring Seal | 3 |
| 4H-9541 | Gasket | 1 |
| 4L-3862 | Gasket | 4 |
| 4L-8337 | O-Ring Seal | 2 |
| 4N-3858 | Gasket | 2 |
| 4N-6658 | Bushing | 2 |
| 5F-9144 | O-Ring Seal | 1 |
| 5S-1188 | O-Ring Seal | 2 |
| 6L-8562 | Taperlock Stud | 4 |
| 6N-0977 | Bushing | 1 |
| 7C-0307 | Gasket | 4 |
| 7M-7273 | Gasket | 1 |
| 9H-2282 | Starting Motor Gasket | 1 |
| 9Y-2988 | Breather As | 2 |
| 109-0075 | O-Ring Seal | 2 |
| 109-0079 | O-Ring Seal | 2 |
| 110-7752 | O-Ring Seal | 4 |
| 110-7753 | O-Ring Seal | 2 |
| 114-8718 | O-Ring Seal | 12 |
| 131-7123 | Bushing | 1 |
| 214-7568 | O-Ring Seal | 3 |
| 248-5513 | Temperature Regulator | 2 |
| 272-2583 | O-Ring Seal | 5 |
| 305-6843 | Guide Spring | 24 |
3412 Engine Gasket Kit Locations
 | |
| Illustration 1 | g03708837 |
(1) Single Cylinder Head ( 460-4768 Gasket Kit ) (2) Front Structure ( 454-4763 Gasket Kit ) (3) Central and Lower Structure ( 460-5277 Gasket Kit ) (4) Oil Cooler and Lines ( 421-8976 Gasket Kit ) (5) Rear Structure ( 419-8267 Gasket Kit ) (6) Aftercooler and Lines Kit ( 219-6544 Gasket Kit ) | |
Gasket Kit Consists
Single Cylinder Head (460-4768 Gasket Kit)
| 460-4768 Gasket Kit (Single Cylinder Head) | ||
| Part Number | Part Name | Qty |
| 3K-0360 | O-Ring Seal | 1 |
| 3S-9643 | Lip Type Seal | 2 |
| 4N-1156 | Regulator Cover Gasket | 1 |
| 4N-1684 | Gasket | 1 |
| 4N-1918 | Wound Gasket | 1 |
| 4N-7253 | Chamber Gasket | 6 |
| 5P-5678 | Seal | 0007M |
| 5P-8119 | O-Ring Seal | 6 |
| 5P-8356 | O-Ring Seal | 2 |
| 6V-3831 | O-Ring Seal | 1 |
| 7L-4774 | O-Ring Seal | 6 |
| 8H-9204 | Felt Washer | 6 |
| 8L-2779 | O-Ring Seal | 6 |
| 109-0076 | O-Ring Seal | 4 |
| 109-0078 | O-Ring Seal | 2 |
| 129-9452 | Exhaust Manifold Gasket | 6 |
| 225-3099 | Cylinder Head Gasket | 1 |
| 225-3101 | Plate Gasket | 1 |
| 359-1439 | Water Seal Assembly | 24 |
Refer to Illustration 1.
Oil Cooler and Lines (421-8976 Gasket Kit)
| 421-8976 Gasket Kit (Oil Cooler and Lines) | ||
| Part Number | Part Name | Qty |
| 2P-3760 | Gasket | 1 |
| 4N-0933 | Gasket | 1 |
| 4N-1156 | Gasket | 2 |
| 4N-1684 | Gasket | 1 |
| 4N-1946 | Gasket | 1 |
| 4N-2199 | Gasket | 2 |
| 5F-0149 | O-Ring Seal | 2 |
| 6N-0824 | Gasket | 1 |
| 7C-0307 | Gasket | 3 |
| 109-0072 | O-Ring Seal | 4 |
| 109-0074 | O-Ring Sea | 1 |
| 109-0076 | O-Ring Seal | 3 |
| 109-0077 | O-Ring Seal | 2 |
| 109-0078 | O-Ring Seal | 6 |
| 343-8888 | Gasket | 1 |
Refer to Illustration 1.
Front Structure (454-4763 Gasket Kit)
| 454-4763 Gasket Kit (Front Structure) | ||
| Part Number | Part Name | Qty |
| 6N-2508 | Gasket | 1 |
| 6V-4314 | O-Ring Seal | 1 |
| 9X-7371 | O-Ring Seal | 1 |
| 112-1579 | O-Ring Seal | 1 |
| 112-1580 | O-Ring Seal | 1 |
| 125-9794 | O-Ring Seal | 1 |
| 142-5867 | Crankshaft Seal | 1 |
| 166-9145 | Cylinder Block Gasket | 1 |
| 193-9155 | Gasket | 1 |
| 234-8937 | Integral Seal | 1 |
Refer to Illustration 1.
Central and Lower Structure (460-5277 Gasket Kit)
| 460-5277 Gasket Kit (Central and Lower Structure) | ||
| Part Number | Part Name | Qty |
| 2P-3760 | Gasket | 1 |
| 2P-4305 | Gasket | 4 |
| 4N-2630 | Side Cover Gasket | 4 |
| 4N-4307 | Gasket | 1 |
| 5P-8356 | O-Ring Seal | 4 |
| 6V-5048 | O-Ring Seal | 1 |
| 8C-3445 | Dust Cap | 1 |
| 8J-4351 | O-Ring Seal | 1 |
| 109-0076 | O-Ring Seal | 3 |
| 109-0078 | O-Ring Seal | 1 |
| 114-4427 | O-Ring Seal | 9 |
| 118-5068 | O-Ring Seal | 1 |
| 239-5572 | Integral Seal | 5 |
| 343-8888 | Gasket | 1 |
| 353-1648 | Oil Pan Gasket | 1 |
Refer to Illustration 1.
Rear Structure (419-8267 Gasket Kit)
| 419-8267 Gasket Kit (Rear Structure) | ||
| Part Number | Gasket Kit | Qty |
| 2A-1162 | Gasket | 2 |
| 2M-5446 | Gasket | 1 |
| 4N-0933 | Gasket | 2 |
| 9L-6924 | Gasket | 1 |
| 9Y-6089 | Gasket | 1 |
| 112-3540 | O-Ring Seal | 1 |
| 125-9794 | O-Ring Seal | 2 |
| 126-2702 | Integral Seal | 1 |
| 142-5868 | Crankshaft Seal | 1 |
| 161-7293 | Cylinder Gasket | 1 |
| 198-6068 | Integral Seal | 1 |
Refer to Illustration 1.
Aftercooler and Lines (219-6544 Gasket Kit)
| 219-6544 Gasket Kit (Aftercooler and Lines) | ||
| Part Number | Part Name | Qty |
| 3J-7354 | O-Ring Seal | 1 |
| 4N-2564 | Gasket | 1 |
| 4N-4307 | Gasket | 1 |
| 4N-8628 | Gasket | 1 |
| 7C-0307 | Gasket | 1 |
| 109-0076 | O-Ring Seal | 6 |
| 112-3258 | O-Ring Seal | 3 |
| 112-3259 | O-Ring Seal | 2 |
| 112-8186 | O-Ring Seal | 2 |
| 118-7214 | O-Ring Seal | 1 |
| 245-8342 | Gasket | 2 |
Refer to Illustration 1.