- Electric Power Generation:
- 3412 GENSET (S/N: 4BZ1-UP)
- Engine:
- 3412 (S/N: 2WJ1-UP)
- 3412C (S/N: DJN1-UP; 9EP1-UP; RTY1-UP)
- 3412E (S/N: TGC1-UP)
- 3412C (S/N: DJN1-UP; 9EP1-UP; RTY1-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 does not contain rod bearings, main bearings, and thrust plates.
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 Serial Number Prefix     | Package Serial Number Prefix     | Engine Arrangements     | Parts Book Media     | Disassembly and Assembly Media     |
3412     | S/N:1EZ     | S/N:4BZ S/N:RTY     |
148-3588 148-3596     |
SEBP2785 SEBP4214     |
RENR1389     |
S/N:9EP S/N:DJN |
166-8579 166-8587 |
SEBP3105 SEBP4174     |
RENR1389     | ||
S/N:TGC | 240-0540 | SEBP4158     | RENR1389     | ||
S/N:2WJ | S/N:2WJ     | 7E-0157 7E-0161     |
SEBP2268     | SENR4628     |
Note: For ordering reference material, contact your local Cat dealer.
3412 460-8972 Major Overhaul Kit Consist
460-8972 Major Overhaul Kit Consist     | ||
Gasket Kits     | ||
Part Number     | Part Name     | Qty     |
460-9424     | Single Cylinder Head Gasket Kit     | 2     |
459-9781     | Oil Cooler and Lines Gasket Kit     | 1     |
459-9828     | Front Structure Gasket Kit     | 1     |
460-0687     | Rear Structure Gasket Kit     | 1     |
460-2297     | Central and Lower Structure Gasket Kit     | 1     |
460-6283     | After Cooler and Lines Gasket Kit     | 1     |
Additional Parts Included in This Kit     | ||
Part Number     | Part Name     | Qty     |
1R-0749     | Fuel Filter     | 2     |
1R-1808     | Engine Oil Filter     | 2     |
1S-0004     | O-Ring Seal     | 2     |
2K-4973     | Locknut     | 1     |
2N-2766     | Locknut     | 24     |
3J-7354     | O-Ring Seal     | 2     |
4N-0685     | Bushing     | 5     |
4N-4668     | Breather As     | 1     |
4N-6658     | Bushing     | 2     |
5K-1770     | O-Ring Seal     | 2     |
6N-0977     | Bushing     | 1     |
6V-3917     | O-Ring Seal     | 8     |
8L-2786     | O-Ring Seal     | 1     |
9X-7378     | O-Ring Seal     | 1     |
106-1792     | Taperlock Stud     | 24     |
131-7123     | Bushing     | 1     |
214-7566     | O-Ring Seal     | 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 ( 459-9424 Gasket Kit ) (2) Front Structure ( 459-9828 Gasket Kit ) (3) Central and Lower Structure ( 460-2297 Gasket Kit ) (4) Oil Cooler and Lines ( 459-9781 Gasket Kit ) (5) Rear Structure ( 460-0687 Gasket Kit ) (6) Aftercooler and Lines Kit ( 460-6283 Gasket Kit ) |
Gasket Kit Consists
Single Cylinder Head (459-9424 Gasket Kit)
459-9424 Gasket Kit (Single Cylinder Head)     | ||
Part Number     | Part Name     | Qty     |
1S-4295     | Gasket     | 1     |
2N-2765     | High Temperature Bolt     | 4     |
2N-2766     | Locknut     | 4     |
3J-7354     | O-Ring Seal     | 1     |
3S-9643     | Lip Type Seal     | 2     |
4F-7390     | O-Ring Seal     | 1     |
4N-1156     | Regulator Cover Gasket     | 1     |
5P-5678     | Seal     | 0007M     |
5P-7530     | O-Ring Seal     | 1     |
5P-8119     | O-Ring Seal     | 6     |
5P-8356     | O-Ring Seal     | 2     |
6V-3831     | O-Ring Seal     | 1     |
6V-3917     | O-Ring Seal     | 4     |
6V-5103     | O-Ring Seal     | 2     |
7C-0307     | Gasket     | 2     |
7E-4369     | Exhaust Seal As     | 3     |
8L-2779     | O-Ring Seal     | 6     |
109-0072     | O-Ring Seal     | 2     |
109-0073     | O-Ring Seal     | 1     |
112-3258     | O-Ring Seal     | 3     |
112-3540     | O-Ring Seal     | 1     |
118-7214     | O-Ring Seal     | 1     |
129-9452     | Exhaust Manifold Gasket     | 6     |
198-6068     | Integral Seal     | 1     |
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 (459-9781 Gasket Kit)
459-9781 Gasket Kit (Oil Cooler and Lines)     | ||
Part Number     | Part Name     | Qty     |
3P-0650     | O-Ring Seal     | 3     |
4N-0865     | Gasket     | 1     |
4N-1946     | Gasket     | 1     |
4N-2199     | Gasket     | 1     |
5P-8068     | O-Ring Seal     | 1     |
6V-5048     | O-Ring Seal     | 2     |
7C-0307     | Gasket     | 1     |
8C-3445     | Dust Cap     | 1     |
109-0074     | O-Ring Sea     | 1     |
109-0077     | O-Ring Seal     | 2     |
112-3258     | O-Ring Seal     | 1     |
343-8888     | Gasket     | 1     |
Refer to Illustration 1.
Front Structure (459-9828 Gasket Kit)
459-9828 Gasket Kit (Front Structure)     | ||
Part Number     | Part Name     | Qty     |
4N-1156     | Regulator Cover Gasket     | 2     |
4N-1946     | Gasket     | 1     |
6N-2508     | Gasket     | 1     |
7C-0307     | Gasket     | 3     |
8T-9527     | O-Ring Seal     | 1     |
9X-7371     | O-Ring Seal     | 1     |
109-0072     | O-Ring Seal     | 2     |
109-0073     | O-Ring Seal     | 1     |
109-0076     | 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     |
239-5571     | Integral Seal     | 1     |
Refer to Illustration 1.
Rear Structure (460-0687 Gasket Kit)
460-0687 Gasket Kit (Rear Structure)     | ||
Part Number     | Gasket Kit     | Qty     |
2A-1162     | Gasket     | 1     |
2N-2765     | High Temperature Bolt     | 8     |
2N-2766     | Locknut     | 8     |
4N-0933     | Gasket     | 2     |
5P-7530     | O-Ring Seal     | 2     |
6V-6353     | O-Ring Seal     | 2     |
7M-7273     | Gasket     | 2     |
9L-6924     | Gasket     | 1     |
9Y-6089     | Gasket     | 2     |
112-3540     | O-Ring Seal     | 2     |
125-9794     | O-Ring Seal     | 2     |
142-5868     | Crankshaft Seal     | 1     |
161-7293     | Cylinder Gasket     | 1     |
198-6068     | Integral Seal     | 2     |
226-4753     | Gasket     | 1     |
Refer to Illustration 1.
Central and Lower Structure (460-2297 Gasket Kit)
460-2297 Gasket Kit (Central and Lower Structure)     | ||
Part Number     | Part Name     | Qty     |
4N-4307     | Gasket     | 1     |
6V-4589     | O-Ring Seal     | 4     |
7C-0307     | Gasket     | 2     |
8J-4351     | O-Ring Seal     | 1     |
109-0078     | O-Ring Seal     | 1     |
114-4427     | O-Ring Seal     | 4     |
118-5068     | O-Ring Seal     | 1     |
165-6170     | Plug     | 3     |
234-8937     | Integral Seal     | 1     |
239-5572     | Integral Seal     | 1     |
343-8888     | Gasket     | 2     |
353-1648     | Oil Pan Gasket     | 1     |
Refer to Illustration 1.
Aftercooler and Lines (460-6283 Gasket Kit)
460-6283 Gasket Kit (Aftercooler and Lines)     | ||
Part Number     | Part Name     | Qty     |
4N-2564     | Gasket     | 1     |
4N-8628     | Gasket     | 1     |
7C-0307     | Gasket     | 1     |
109-0076     | O-Ring Seal     | 6     |
112-3259     | O-Ring Seal     | 2     |
112-8186     | O-Ring Seal     | 2     |
118-7214     | O-Ring Seal     | 1     |
Refer to Illustration 1.