The Caterpillar 3412E is a 12 L 6-cylinder turbocharged/aftercooled engine rated at 1800 rpm, producing up to 544 kW. It powers generator sets from Caterpillar, Olympian and Solar Turbines, including the 12CM32, 12CM43, 14CM43 and 16CM32. It holds 730 L (192.8 gal) of oil and 750 L (198.1 gal) of coolant.
Also known as: Caterpillar 3412E
Part of the Caterpillar 3412E engine family — 2 variants share parts & fitment.
The cheapest captured merchant offer per filter — see the full cross-reference below for every OEM/aftermarket option.
Prices captured from merchant listings; some links are affiliate links. Verify against your serial number before ordering.
| Oil capacity | 730.0 L |
|---|---|
| Coolant capacity | 750.0 L |
| Displacement | 12.0 L |
| Cylinders | 6 |
| Aspiration | Turbocharged/Aftercooled |
| Rated speed | 1800 rpm |
| Gross power | 544 kW |
Shared across brands: Caterpillar, Olympian, Solar Turbines
Compiled from service & troubleshooting documentation across every generator set that uses the Caterpillar 3412E.
| Item | Spec | Capacity | Part # | Interval | |
|---|---|---|---|---|---|
| Air filter | — | ||||
| Fuel filter | — | ||||
| Oil filter | 2P4005 | 200 hr | Amazon eBay $32.99 PartsGeek $23.97 KuduParts $39.00 | ||
| Battery | — | ||||
| Belt | — | ||||
| Coolant | 72.5 L | — | |||
| Oil | Caterpillar DEO 10W30 or 15W40 | 85.0 L | — | 200 hr | |
| Spark plug | — |
Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.
| Item | Action | Hours | Months | Notes |
|---|---|---|---|---|
| Air Tank | Drain | 50 hr | Drain water/sediment; every 1900 L (500 gal) fuel or 50 hours | |
| Marine Gear Oil and Filter | Change | 50 hr | First service — Change on new or rebuilt marine gears at first 50 hours only, then every 2000 hours thereafter | |
| Sea Water Strainer | Clean | 50 hr | When required and every 3800 L (1000 US gal) of fuel or 50 service hours | |
| Zinc rods | Inspect | 50 hr | First service — Within 24 hours of initially filling the plumbing with sea water; if no significant corrosion, inspect again after seven days or 50 hours of engine operation | |
| Clutch Shift Collar and Bearing and Shift Lever | Adjust | 125 hr | Every 4750 L (1250 gal) of fuel or 125 hours - lubricate/check/adjust | |
| Alternator Belt | Inspect | 250 hr | 12 mo | Inspect/adjust/replace; every 12 750 L (3375 US gal) of fuel or 250 h or yearly (8RG1-Up); every 19 000 L (5000 US gal) or 250 h or yearly (REA1-Up, 3JK1-Up, 7BL1-Up) |
| Alternator and Fan Belts | Replace | 250 hr | Inspect/Adjust/Replace - Every 19 000 L (5000 US gal) of Fuel or 250 Service Hours | |
| Alternator and Fan Drive Belts | Inspect | 250 hr | Every 12,500 Miles or 250 Service Hours; inspect—adjust if necessary | |
| Batteries | Check | 250 hr | Clean/inspect and check electrolyte level | |
| Batteries | Inspect | 250 hr | Every 12,500 Miles or 250 Service Hours; inspect electrolyte level | |
| Battery Electrolyte Level | Check | 250 hr | 12 mo | Every 19 000 L (5000 US gal) of Fuel or 250 Service Hours |
| Belts, Hoses and Clamps | Inspect | 250 hr | ||
| Coolant Conditioner Element | Change | 250 hr | Every 12,500 Miles or 250 Service Hours; change element | |
| Cooling System | Clean | 250 hr | Every 12,500 Miles or 250 Service Hours; clean radiator fins—inspect hoses | |
| Cooling System | Other | 250 hr | Every 12,500 Miles or 250 Service Hours; add conditioner if not equipped with element | |
| Cooling System Coolant Additive Concentration | Test | 250 hr | Add liquid coolant additive or replace maintenance element if equipped | |
| Cooling System Coolant Sample (Level 1) | Test | 250 hr | Obtain - Every 250 Service Hours | |
| Cooling System Supplemental Coolant Additive (SCA) | Test | 250 hr | 12 mo | Test/Add; 8RG1-Up: 12 750 L (3375 US gal) or 250 h or yearly; other S/N: 19 000 L (5000 US gal) or 250 h or yearly |
| Crankcase Breather | Clean | 250 hr | ||
| Engine Air Cleaner Element | Clean | 250 hr | 12 mo | Clean/Replace; 8RG1-Up: 12 750 L (3375 US gal) or 250 h or yearly; other S/N: 19 000 L (5000 US gal) or 250 h or yearly |
| Engine Air Cleaners | Clean | 250 hr | ||
| Engine Air Intake | Clean | 250 hr | Every 12,500 Miles or 250 Service Hours; clean oil bath cleaners—clean or replace dry elements | |
| Engine Crankcase | Change | 250 hr | Every 12,500 Miles or 250 Service Hours; change oil and filters | |
| Engine Crankcase Breather | Clean | 250 hr | 12 mo | Every 19 000 L (5000 US gal) of Fuel or 250 Service Hours |
| Engine Oil Sample | Other | 250 hr | 12 mo | Obtain S·O·S oil sample; 8RG1-Up: 12 750 L (3375 US gal) or 250 h or yearly; other S/N: 19 000 L (5000 US gal) or 250 h or yearly |
| Engine Oil and Filter | Change | 250 hr | 12 mo | 8RG1-Up: 12 750 L (3375 US gal) or 250 h or yearly; other S/N: 19 000 L (5000 US gal) or 250 h or yearly |
| Engine Oil and Filters | Change | 250 hr | Every 9500 L (2500 gal) of fuel or 250 hours; standard sump 250 hrs, deep sump 500 hrs | |
| Engine Protective Devices | Check | 250 hr | Every 19 000 L (5000 US gal) of Fuel or 250 Service Hours | |
| Fan Pulley Bearing | Lubricate | 250 hr | Every 12,500 Miles or 250 Service Hours; lubricate bearing MPG | |
| Fuel System (drain water/sediment, replace final filter, clean primary filter) | Clean | 250 hr | Every 9500 L (2500 gal) of fuel or 250 hours | |
| Fuel System Primary Filter | Clean | 250 hr | 12 mo | Clean/Replace; 8RG1-Up: 12 750 L (3375 US gal) or 250 h or yearly; other S/N: 19 000 L (5000 US gal) or 250 h or yearly |
| Fuel System Secondary Filter | Replace | 250 hr | 12 mo | 8RG1-Up: 12 750 L (3375 US gal) or 250 h or yearly; other S/N: 19 000 L (5000 US gal) or 250 h or yearly |
| Fuel Tank Water and Sediment | Drain | 250 hr | 12 mo | 8RG1-Up: 12 750 L (3375 US gal) or 250 h or yearly; other S/N: 19 000 L (5000 US gal) or 250 h or yearly |
| Hoses and Clamps | Inspect | 250 hr | 12 mo | Inspect/Replace; 8RG1-Up: 12 750 L (3375 US gal) or 250 h or yearly; other S/N: 19 000 L (5000 US gal) or 250 h or yearly |
| Magnetic Pickups | Clean | 250 hr | First service — Clean/Inspect - First 19 000 L (5000 US gal) of Fuel or 250 Service Hours | |
| Scheduled Oil Sampling (S-O-S) | Test | 250 hr | Every 9500 L (2500 gal) of fuel or 250 hours - obtain sample | |
| Engine Breather | Clean | 500 hr | Every 25,000 Miles or 500 Service Hours; wash | |
| Fuel Filters | Replace | 500 hr | Every 25,000 Miles or 500 Service Hours; replace final fuel filter—clean primary filter | |
| oil | Change | 500 hr | 3000 Series service intervals increased to 500 hours as standard (3013C, 3024C, 3054, 3056) | |
| Aftercooler Core | Clean | 1000 hr | When required; also every 76 000 L (20 000 US gal) of fuel or 1000 service hours |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Type | Item | Value | Unit | Condition |
|---|---|---|---|---|
| Clearance | Bearing bracket step minimum | less than 0.0762 | mm | |
| Clearance | Connecting rod bearing clearance (max permissible, used bearings) | 0.20 | mm (0.008 inch) | |
| Clearance | Connecting rod bearing clearance (new bearings) | 0.062 to 0.160 | mm (0.0024 to 0.0063 inch) | |
| Clearance | Coolant level below bottom of filler pipe (engines without recovery tank) | within 13 | mm | 0.5 inch |
| Clearance | Crankshaft end play (max permissible, used thrust plates) | 0.89 | mm (0.035 inch) | |
| Clearance | Crankshaft end play (new thrust plates) | 0.15 to 0.55 | mm (0.006 to 0.022 inch) | |
| Clearance | Crankshaft main bearing clearance (max permissible, used bearings) | 0.25 | mm (0.010 inch) | |
| Clearance | Crankshaft main bearing clearance (new bearings) | 0.091 to 0.186 | mm (0.0036 to 0.0073 inch) | |
| Clearance | Damper pilot runout limit | 0.10 | mm | vibration analysis |
| Clearance | Dowel protrusion from crankshaft face | 4.1 + 0.5 | mm (0.16 + 0.02 inch) | |
| Clearance | Magnetic Pickup Back-off from Flywheel Ring Gear | 180 +/- 15 | degrees (1-1/2 turn CCW) | |
| Clearance | Maximum dowel length out of crankshaft face | 6.4 | mm (0.25 inch) | |
| Clearance | Turbocharger Shaft End Play | 0.076 to 0.203 | mm (0.003 to 0.008 in) | |
| Clearance | Turbocharger end play | .003 inch (0.07 mm) to .008 inch (0.203 mm) | checked with a dial indicator | |
| Clearance | Unit injector height (from top of unit injector to machined ledge of fuel injector body) | 78.0 ± 0.2 | mm | |
| Clearance | Valve guide bore surface diameter | 35.00 + 0.50 | mm (1.378 + 0.020 inch) | |
| Clearance | Water pump leakage considered normal as engine cools | small amount | water pump seal is lubricated by coolant in the cooling system | |
| Gap | Fan/alternator belt deflection | 2 inch (1 cm) | with 25 lb. (110 N) force midway between the pulleys | |
| Other | Accelerator pedal position sensor duty cycle at high idle | 75 to 90 | percent | high idle |
| Other | Accelerator pedal position sensor duty cycle at low idle | 10 to 22 | percent | low idle |
| Other | Alternator belt deflection | 13 to 19 | mm | 110 N (25 lb) of force applied midway between the pulleys; 0.50 to 0.75 inch |
| Other | Belt tension deflection | 0.50 to 0.75 | inch | 110 N (25 lb) force midway between pulleys |
| Other | Belt tension deflection | 13 to 19 | mm | 110 N (25 lb) force midway between pulleys |
| Other | Caterpillar Fast Acting Cooling System Cleaner concentration | 0.5 | L per 15 L | 1 pint per 4 US gal of cooling system capacity |
| Other | Chlorine content limit for heat exchanger cleaning water | more than 300 | ppm | water containing more than 300 ppm of chlorine should not be used |
| Other | Coolant fill rate | 5 U.S. gallons (19 liters) per minute or less | to help avoid air locks | |
| Other | Coolant level below filler pipe bottom | 13 | mm | |
| Other | Cooling system conditioner concentration | new or reconditioned engine: 3% to 6% concentration; add 1 pint (.50 liters) for each 4 gal. (15.14 liters) of coolant to obtain 3% concentration. Thereafter: add 1 pint (.50 liters) for each 16 gal. (60.50 liters) of coolant to maintain 3% concentration. | ||
| Other | Cooling system fill rate | no faster than 19 | L per minute | 5 US gal per minute to avoid air locks |
| Other | Cooling system fill rate (maximum) | 19 | L per minute | to avoid air locks |
| Other | Engine monitoring derate maximum rate | 10 | percent per second | warning/derate graph |
| Other | Engine oil supplemental filtration | 12 qt. supplemental oil filtration system extends the normal interval for CD oils to 16,500 miles | ||
| Other | Engine speed/timing sensor calibration tolerance (primary vs secondary) | 3 | degrees | 0022-11 / 0022-13 |
| Other | Engine valve rotator operation | should turn slightly when valves close | ||
| Other | Generator excitation PMG short circuit capability | 3 X In for 10 seconds | ||
| Other | Glow plug current draw | 12.5 amperes each; 75 amps total | 12 volt; six glow plugs | |
| Other | High idle speed for droop governors | approximately 2% to 5% | above full load speed | governors equipped with droop |
| Other | Paper air cleaner element reuse limit | up to six | times | replace at least one time per year regardless of number of cleanings |
| Other | Plate type heat exchanger cleaner concentration | maximum 4 | percent by weight | cleaning solution temperature less than 60°C (140°F) |
| Other | Rating condition (diesel 7 L and higher) | 99 kPa (29.31 in Hg) dry barometer, 25°C (77°F) | SAE J1995 inlet air standard | |
| Other | Rating condition (diesel up to 6.6 L) | 100 kPa (29.5 in Hg) total barometric pressure, 1 kPa (.295 in Hg) vapor pressure, 25°C (77°F) | ISO/TR14396 inlet air standard | |
| Other | Rating condition (gas) | 100 kPa (29.61 in Hg) and 25°C (77°F) | SAE J1349 standard | |
| Other | Solvent contact time with heat exchanger gaskets | not more than half an hour | natural rubber, butyl rubber and EPDM gaskets swell in these solvents | |
| Other | Speed droop values commonly used | 3% and 0% | % | |
| Other | Supplemental Coolant Additive (SCA) concentration, coolant and SCA | do not exceed six | percent | |
| Other | Supplemental Coolant Additive (SCA) concentration, water and SCA | do not exceed eight | percent | |
| Other | Turbocharger V-band clamp position | 90 ± 10 | degrees | outboard from the bottom vertical |
| Other | Turbocharger compressor housing air outlet position | zero | degrees | from top vertical |
| Other | Turbocharger weight | 34 | kg | approximately (75 lb) |
| Other | Vibration amplitude limit (acceptable engine performance) | 4.0 | mils | engine vibration measurement |
| Other | Vibration damper inspection | dented, cracked, leaking, bent or discolored damper must be replaced | ||
| Other | Voltage droop for 0.8 power factor load | approximately 5 | % | loads with a power factor of 0.8 |
| Pressure | Air Cleaner Maximum Pressure Differential | 7.5 | kPa (30 in water / 1.1 psi) | |
| Pressure | Air cleaner cleaning pressure air | 30 psi (205 kPa) maximum | pressure air cleaning | |
| Pressure | Air cleaner cleaning water pressure | 40 psi (280 kPa) maximum | water cleaning | |
| Pressure | Allowed difference between pressure gauge and Cat ET status screen | 35 | kPa | engine running |
| Pressure | Auxiliary water pump differential pressure requiring component inspection | more than 103 | kPa | 15 psi |
| Pressure | Boost pressure with engine OFF | 0 | kPa | key switch ON, engine OFF |
| Pressure | Coolant system pressure test - use 9S-8140 Pressurizing Pump | 9S-8140 | ||
| Pressure | Engine oil pressure at low idle | 186 to 344 | kPa | low idle speed |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Fluid | Grade | Standard | Ambient | Capacity | Notes |
|---|---|---|---|---|---|
| Coolant | Cat DEAC | Diesel; 3,000 Service Hours or Three Years; annual S·O·SSM Level 2 coolant sampling and analysis | |||
| Coolant | Cat DEAC (Diesel Engine Antifreeze/Coolant) | Conventional heavy-duty coolant/antifreeze; commercial long life coolants meeting Caterpillar EC-1 | Level 1 coolant sample every 250 hours; Level 2 yearly; DEAC change every 3000 service hours | ||
| Coolant | Cat DEAC Diesel Engine Antifreeze/Coolant | ASTM D4985 or ASTM D5345 | 58.0 L | Acceptable; 1:1 mixture of water and glycol; service life three years; does not require SCA at initial fill | |
| Coolant | Cat ELC | Diesel; 12,000 Service Hours or Six Years; add Cat ELC Extender at 6,000 service hours or one half of service life; annual S·O·SSM Level 2 coolant sampling and analysis | |||
| Coolant | Cat ELC (Extended Life Coolant) | Does not require frequent SCA additions; Level 1 sample optional, Level 2 yearly; ELC change every 12 000 service hours or 6 years | |||
| Coolant | Cat ELC Extended Life Coolant | Caterpillar EC-1 | 58.0 L | Preferred; 1:1 mixture of water and glycol; service life six years; add ELC Extender once | |
| Coolant | Cat ELC Extender | Add every 6000 service hours or 3 years according to requirements for cooling system capacity | |||
| Coolant | Cat Extended Life Coolant | 305.8 L | Engine coolant capacity with radiator/exp. tank | ||
| Coolant | Cat NGEC | Natural Gas; 16,000 Service Hours or Three Years; use interval that occurs first | |||
| Coolant | Caterpillar Antifreeze / liquid Cooling System Additive (Conditioner) | Maintain within 13 mm (1/2 in) below bottom of fill pipe; add 0.24 L (1/4 US pint) additive per 30 L (8 U.S. gal) capacity; concentration 3-6% (up to 8% for water+SCA) | |||
| Coolant | Caterpillar Cooling System Conditioner liquid or coolant conditioner element; ethylene glycol antifreeze solution; Dowtherm 209 Full-Fill coolant | Never use both the liquid cooling system conditioner and the coolant conditioner element at the same time. Do not use Caterpillar Cooling System Conditioner or Coolant Conditioner Elements with Dowtherm 209 Full-Fill coolant. | |||
| Coolant | Caterpillar SCA and Water | For stationary applications not requiring boiling/freezing protection; minimum six percent to maximum eight percent SCA concentration; service life two years | |||
| Engine oil | CD engine oil | If fuel has over 0.5% sulfur content, CD engine oil must have a TBN of 20 times the percentage of fuel sulfur (TBN as measured by ASTM D-2896 method). | A 12 qt. supplemental oil filtration system extends the normal oil and filter change interval to 16,500 miles. | ||
| Engine oil | Cat NGEO | Natural Gas | |||
| Engine oil | SAE 10W30 | Referenced as the oil used when normal operating engine oil pressure is specified | |||
| Engine oil | low sulfated ash oil | Required for U.S. EPA Tier 4 Final, EU Stage IV engines. | |||
| Engine oil | Cat Arctic DEO SYN SAE 0W-30 | -40°C to 30°C | Engine Crankcase; Industrial Engines | ||
| Engine oil | SAE 0W-20 | Cat DEO Multigrade API CH-4/API CG-4 | -40°C to 10°C | ||
| Engine oil | SAE 0W-30 | Cat DEO Multigrade API CH-4/API CG-4 | -40°C to 30°C | ||
| Engine oil | SAE 0W-40 | Cat DEO Multigrade API CH-4/API CG-4 | -40°C to 40°C | ||
| Engine oil | Cat DEO SYN SAE 5W-40 | -30°C to 50°C | Engine Crankcase; Industrial Engines | ||
| Engine oil | SAE 5W-30 | Cat DEO Multigrade API CH-4/API CG-4 | -30°C to 30°C | ||
| Engine oil | SAE 5W-40 | Cat DEO Multigrade API CH-4/API CG-4 | -30°C to 50°C | ||
| Engine oil | Cat DEO SAE 10W-30 | -18°C to 40°C | Engine Crankcase; Industrial Engines | ||
| Engine oil | SAE 10W-30 | Cat DEO Multigrade API CH-4/API CG-4 | -18°C to 40°C | ||
| Engine oil | Cat DEO SAE 15W-40 | -9°C to 50°C | Engine Crankcase; Industrial Engines | ||
| Engine oil | SAE 15W-40 | Cat DEO Multigrade API CH-4/API CG-4 | -9°C to 50°C | ||
| Fuel | Ultra Low Sulfur Diesel (ULSD) | Contains less than or equal to 15 parts per million sulfur (mg/kg); required for U.S. EPA Tier 4 Final, EU Stage IV engines. B20 biodiesel capability available. | |||
| Fuel | 35° API gravity at 60°F (16°C) | LHV 18,390 Btu/lb (42 780 kJ/kg) | Fuel at 85°F (29°C) weighing 7.001 lbs/U.S. gal (838.9 g/liter) | ||
| Fuel | No. 1-D or No. 2-D | ASTM D975 | Use No. 1 diesel fuel or a blend of No. 1 and No. 2 for cold-weather operation; No. 2 is most commonly used |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Code | Name | Meaning | Severity | Action |
|---|---|---|---|---|
| 0001-11 | Cylinder #1 Injector current fault | The ECM detects a low current condition (open circuit) in the No. 1 cylinder injector solenoid wiring or a high current condition (short circuit) in the injector solenoid. Flash code 72. | Warning | Perform "Injector Solenoid Circuit - Test" |
| 0002-11 | Cylinder #2 Injector current fault | Low current (open circuit) or high current (short circuit) in the No. 2 cylinder injector solenoid. Flash code 72. | Warning | Perform "Injector Solenoid Circuit - Test" |
| 0003-11 | Cylinder #3 Injector current fault | Low current (open circuit) or high current (short circuit) in the No. 3 cylinder injector solenoid. Flash code 73. | Warning | Perform "Injector Solenoid Circuit - Test" |
| 0004-11 | Cylinder #4 Injector current fault | Low current (open circuit) or high current (short circuit) in the No. 4 cylinder injector solenoid. Flash code 73. | Warning | Perform "Injector Solenoid Circuit - Test" |
| 0005-11 | Cylinder #5 Injector current fault | Low current (open circuit) or high current (short circuit) in the No. 5 cylinder injector solenoid. Flash code 74. | Warning | Perform "Injector Solenoid Circuit - Test" |
| 0006-11 | Cylinder #6 Injector current fault | Low current (open circuit) or high current (short circuit) in the No. 6 cylinder injector solenoid. Flash code 74. | Warning | Perform "Injector Solenoid Circuit - Test" |
| 0022-11 | Primary to Secondary Engine Speed Signal Calibration | A timing calibration has been completed and the primary and secondary speed/timing sensors are off by more than 3 degrees. ECM uses default timing. Flash code 42. | Warning | Check the cluster gear, camshaft backlash and engine speed/timing sensors |
| 0022-13 | Engine Speed Signal Calibration Not Performed | A timing calibration has never been performed on a new ECM or the timing is off by more than 3 degrees. ECM uses default timing. Flash code 42. | Warning | Perform "Engine Speed/Timing Sensor - Calibrate" |
| 0030-08 | PTO Throttle signal invalid | The PTO Configuration is programmed to Remote Throttle and the ECM is not receiving a valid signal from the PTO throttle. Flash code 29. | Warning | Perform "Remote PTO Accelerator Position Sensor Circuit - Test" |
| 0030-13 | PTO Throttle out of calibration | The duty cycle of the PTO throttle signal is less than 5 percent or more than 95 percent for more than two seconds with PTO Configuration programmed to Remote Throttle. Flash code 29. | Warning | Perform "Remote PTO Accelerator Position Sensor Circuit - Test" |
| 0041-03 | 8 Volt Supply voltage high | The 8 volt supply is more than 8.5 VDC for more than one second. Flash code 21. | Warning | Perform "Accelerator Pedal (Throttle) Position Sensor Circuit - Test" |
| 0041-04 | 8 Volt Supply voltage low | The 8 volt supply is less than 7.5 VDC for more than one second. Flash code 21. | Warning | Perform "Accelerator Pedal (Throttle) Position Sensor Circuit - Test" |
| 0043-02 | Key Switch Fault | The key switch was rapidly cycled at least three times within the last second, indicating an intermittent battery circuit to the key switch or a low battery condition while the engine is running. Flash code 71. | Warning | Perform "Ignition Key Switch Circuit and Battery Supply Circuit - Test" |
| 0052-11 | Air Inlet Shutoff Shutdown | The engine was shut down due to an engine overspeed condition; ECM disables the unit injectors and activates the air inlet shutoff relay. Flash code 00. | Shutdown | Talk to the Operator to determine the reason for the engine overspeed; refer to "Air Inlet Shutoff Circuit - Test" |
| 0054-05 | Auxiliary Output #06 current low | A low current condition (open circuit) exists in the circuit for the lockout solenoid for more than two seconds with Transmission Style programmed to Eaton Top 2. Flash code 66. | Warning | Perform "Eaton Top 2 Transmission Circuit - Test" |
| 0054-06 | Auxiliary Output #06 current high | A high current condition (short circuit) exists in the circuit for the lockout solenoid for more than two seconds with Transmission Style programmed to Eaton Top 2. Flash code 66. | Warning | Perform "Eaton Top 2 Transmission Circuit - Test" |
| 0055-05 | Auxiliary Output #07 current low | A low current condition (open circuit) exists in the circuit for the shift solenoid with Transmission Style programmed to Eaton Top 2. Flash code 67. | Warning | Perform "Eaton Top 2 Transmission Circuit - Test" |
| 0055-06 | Auxiliary Output #07 current high | A high current condition (short circuit) exists in the circuit for the shift solenoid with Transmission Style programmed to Eaton Top 2. Flash code 67. | Warning | Perform "Eaton Top 2 Transmission Circuit - Test" |
| 0064-12 | Secondary Engine Speed loss of signal | The signal for the secondary engine speed/timing sensor is intermittent or lost. Flash code 34. | Warning | Perform "Engine Speed/Timing Sensor Circuit - Test" |
| 0071-00 | Idle Shutdown Override | The Allow Idle Shutdown Override parameter is programmed to Yes and the brake or clutch switch status changes within the final 90 seconds of the idle shutdown timer. Flash code 01. | Info | Perform "Idle Shutdown Timer - Test" |
| 0071-01 | Idle Shutdown | The idle shutdown timer has expired and the engine has shut down. Flash code 47. | Shutdown | Perform "Idle Shutdown Timer - Test" |
| 0071-14 | PTO Shutdown | The timer for the PTO has expired and the engine has shut down with the PTO On/Off switch in the ON position. Flash code 47. | Shutdown | Perform "PTO Shutdown Timer - Test" |
| 0084-00 | Vehicle Overspeed Warning | The vehicle speed exceeds the programmed Vehicle Speed Limit by more than 10 MPH (Soft VSL No) or 15 MPH (Soft VSL Yes) for more than 20 seconds. Flash code 41. | Warning | Perform "Vehicle Speed Circuit - Calibrate" |
| 0084-01 | Vehicle Speed loss of signal | The vehicle speed signal indicates 0 MPH while engine speed is above VSL Protection minus 100 rpm. Flash code 31. | Warning | Perform "Vehicle Speed and Speedometer Circuit - Test" |
| 0084-02 | Vehicle Speed signal invalid | The vehicle speed signal indicates a constant MPH with engine speed greater than 950 rpm. Flash code 36. | Warning | Perform "Vehicle Speed and Speedometer Circuit - Test" |
| 0084-08 | Vehicle Speed signal out of range | The vehicle speed signal indicates vehicle speed greater than 127.5 MPH for more than two seconds. Flash code 36. | Warning | Perform "Vehicle Speed and Speedometer Circuit - Test" |
| 0084-10 | Vehicle Speed signal rate of change | The vehicle speed signal changes more than 5 MPH on eight consecutive readings in three seconds. Flash code 36. | Warning | Perform "Vehicle Speed and Speedometer Circuit - Test" |
| 0084-14 | Quick Stop Occurrence | The vehicle speed slows at a rate that exceeds the programmed Quick Stop Rate with the service brake applied. The ECM records engine speed, vehicle speed, throttle position, cruise status, clutch switch and brake switch. | Info | No electronic system fault; check that the Quick Stop Rate parameter is not set too low |
| 0091-08 | Throttle Position Invalid | The signal frequency from the accelerator pedal position sensor is less than 150 Hz or greater than 1050 Hz for more than two seconds. Flash code 32. | Warning | Perform "Accelerator Pedal (Throttle) Position Sensor Circuit - Test" |
| 0091-13 | Throttle Position out of calibration | The duty cycle for the accelerator pedal position sensor is less than 5 percent or greater than 95 percent for more than two seconds. Flash code 32. | Warning | Perform "Accelerator Pedal (Throttle) Position Sensor Circuit - Test" |
| 0100-01 | Low Oil Pressure Warning | The engine oil pressure is below the trip line for more than eight seconds. Flash code 46. | Warning | Check engine oil level, sensor installation, active diagnostic codes, status screen, 5 volt supply and oil pressure map |
| 0100-03 | Oil Pressure voltage high | The signal voltage from the engine oil pressure sensor is greater than 4.8 VDC for more than eight seconds. Flash code 24. | Warning | Perform "Engine Pressure Sensor Open or Short Circuit - Test" |
| 0100-04 | Oil Pressure voltage low | The signal voltage from the engine oil pressure sensor is less than 0.2 VDC for more than eight seconds. Flash code 24. | Warning | Perform "Engine Pressure Sensor Open or Short Circuit - Test" |
| 0100-11 | Very Low Oil Pressure | The engine oil pressure is below the trip line for more than eight seconds. Engine speed limited to 1350 rpm and vehicle speed limited to 72 km/h (45 mph). Flash code 46. | Warning | Check engine oil level, sensor installation, active diagnostic codes, status screen, 5 volt supply and oil pressure map |
| 0102-00 | Excessive Boost Pressure | The actual boost pressure is higher than the desired boost pressure. Boost pressure is set to 0 kPa (0 psi). | Warning | Determine the cause of the excessive boost pressure such as a failed turbocharger wastegate or a pinched wastegate line |
| 0102-03 | Boost Pressure voltage high | The signal voltage from the boost pressure sensor is greater than 4.8 VDC for more than two seconds. Flash code 25. | Warning | Perform "Engine Pressure Sensor Open or Short Circuit - Test" |
| 0102-04 | Boost Pressure voltage low | The signal voltage from the boost pressure sensor is less than 0.2 VDC for more than one second. Flash code 25. | Warning | Perform "Engine Pressure Sensor Open or Short Circuit - Test" |
| 0105-00 | High Intake Manifold Air Temperature Warning | The intake manifold air temperature is greater than 90 C (194.0 F) for more than four seconds. Flash code 64. | Warning | Check the air-to-air aftercooler for debris and/or restriction to the air flow |
| 0105-03 | Intake Manifold Air Temperature voltage high | The signal voltage from the intake manifold air temperature sensor is greater than 4.9 VDC for more than eight seconds. Flash code 38. | Warning | Perform "Engine Temperature Sensor Open or Short Circuit - Test" |
| 0105-04 | Intake Manifold Air Temperature voltage low | The signal voltage from the intake manifold air temperature sensor is less than 0.2 VDC for more than eight seconds. Flash code 38. | Warning | Perform "Engine Temperature Sensor Open or Short Circuit - Test" |
| 0105-11 | Very High Intake Manifold Air Temperature | The intake manifold air temperature is greater than 109 C (228 F) for more than two seconds. Flash code 64. | Warning | Check the air-to-air aftercooler for debris and/or restriction to the air flow |
| 0108-03 | Barometric Pressure voltage high | The signal voltage from the atmospheric pressure sensor is greater than 4.9 VDC. Flash code 26. | Warning | Perform "Engine Pressure Sensor Open or Short Circuit - Test" |
| 0108-04 | Barometric Pressure voltage low | The signal voltage from the atmospheric pressure sensor is low. Flash code 26. | Warning | Perform "Engine Pressure Sensor Open or Short Circuit - Test" |
| 0110-00 | High Coolant Temperature Warning | High coolant temperature warning. Flash code 61. | Warning | Refer to "Engine Temperature Sensor Open or Short Circuit - Test" |
| 0110-03 | Coolant Temperature voltage high | The signal voltage from the coolant temperature sensor is high. Flash code 27. | Warning | Perform "Engine Temperature Sensor Open or Short Circuit - Test" |
| 0110-04 | Coolant Temperature voltage low | The signal voltage from the coolant temperature sensor is low. Flash code 27. | Warning | Perform "Engine Temperature Sensor Open or Short Circuit - Test" |
| 0110-11 | Very High Coolant Temperature | Very high coolant temperature; in Shutdown mode the engine will be shut down. Flash code 61. | Shutdown | Refer to "Engine Temperature Sensor Open or Short Circuit - Test" |
| 0111-01 | Low Coolant Level Warning | Low coolant level warning. Flash code 62. | Warning | Check the coolant level sensor and circuit |
| 0111-02 | Coolant Level signal invalid | Invalid coolant level signal. Flash code 12. | Warning | Check the coolant level sensor and circuit |
| 0111-03 | Coolant Level voltage high | Coolant level voltage high. Flash code 12. | Warning | Check the coolant level sensor and circuit |
| 0111-04 | Coolant Level voltage low | Coolant level voltage low. Flash code 12. | Warning | Check the coolant level sensor and circuit |
| 0111-11 | Very Low Coolant Level | Very low coolant level; in Shutdown mode the engine will be shut down. Flash code 62. | Shutdown | Check the coolant level sensor and circuit |
| 0121-05 | Low/High Retarder current low | Low current condition in the Low/High retarder solenoid circuit. Flash code 14. | Warning | Perform "Retarder (Compression Brake) Solenoid Circuit - Test" |
| 0121-06 | Low/High Retarder current high | High current condition in the Low/High retarder solenoid circuit. Flash code 14. | Warning | Perform "Retarder (Compression Brake) Solenoid Circuit - Test" |
| 0122-05 | Med/High Retarder current low | Low current condition in the Med/High retarder solenoid circuit. Flash code 14. | Warning | Perform "Retarder (Compression Brake) Solenoid Circuit - Test" |
| 0122-06 | Med/High Retarder current high | High current condition in the Med/High retarder solenoid circuit. Flash code 14. | Warning | Perform "Retarder (Compression Brake) Solenoid Circuit - Test" |
| 0168-02 | ECM Battery Power Intermittent | Intermittent battery power to the ECM. Flash code 51. | Warning | Perform "Ignition Key Switch Circuit and Battery Supply Circuit - Test" |
| 0171-03 | Ambient Air Temperature voltage high | Ambient air temperature sensor voltage high. | Warning | Check the ambient air temperature sensor circuit |
| 0171-04 | Ambient Air Temperature voltage low | Ambient air temperature sensor voltage low. | Warning | Check the ambient air temperature sensor circuit |
| 0171-11 | Ambient Air Temperature Data Lost | No ambient air temperature data. | Warning | Check the ambient air temperature sensor circuit |
| 0174-00 | High Fuel Temperature Warning | High fuel temperature warning. Flash code 65. | Warning | Check the fuel temperature sensor and fuel system |
| 0174-03 | Fuel Temperature voltage high | Fuel temperature sensor voltage high. Flash code 13. | Warning | Perform "Engine Temperature Sensor Open or Short Circuit - Test" |
| 0174-04 | Fuel Temperature voltage low | Fuel temperature sensor voltage low. Flash code 13. | Warning | Perform "Engine Temperature Sensor Open or Short Circuit - Test" |
| 0190-00 | Engine Overspeed Warning | Engine overspeed warning. Flash code 35. | Warning | Check the engine speed/timing sensors |
| 0190-12 | Primary Engine Speed loss of signal | The signal for the primary engine speed/timing sensor is lost. Flash code 34. | Warning | Perform "Engine Speed/Timing Sensor Circuit - Test" |
| 0191-07 | Transmission Not Responding | Transmission not responding. Flash code 68. | Warning | Check the transmission and data link |
| 0224-11 | Theft Deterrent Active | The theft deterrent is active. Flash code 00. | Warning | Enter the theft deterrent password |
| 0224-14 | Theft Deterrent Active with Engine Cranking | The theft deterrent is active with the engine cranking. Flash code 00. | Warning | Enter the theft deterrent password |
| 0231-02 | J1939 Data Incorrect | Incorrect data on the J1939 data link. Flash code 58. | Warning | Perform "ATA (SAE J1587 / J1708) Data Link Circuit - Test" / check J1939 data link |
| 0231-11 | J1939 Data Link Fault | J1939 data link fault. Flash code 58. | Warning | Check the J1939 data link |
| 0231-12 | J1939 Device Not Responding | A J1939 device is not responding. | Warning | Check the J1939 data link and device |
| 0232-03 | 5 Volt Supply voltage high | 5 volt supply voltage high. Flash code 21. | Warning | Check the 5 volt supply and sensor circuits |
| 0232-04 | 5 Volt Supply voltage low | 5 volt supply voltage low. Flash code 21. | Warning | Check the 5 volt supply and sensor circuits |
| 0246-11 | Brake Pedal Switch #1 Fault | Brake pedal switch #1 fault. Flash code 00. | Warning | Perform "Service Brake Pedal Position (Switch 1) Circuit - Test" |
| 0247-11 | Brake Pedal Switch #2 Fault | Brake pedal switch #2 fault. Flash code 00. | Warning | Check the service brake pedal position switch #2 circuit |
| 0249-11 | J1922 Data Link Fault | J1922 data link fault. Flash code 58. | Warning | Check the J1922 data link |
| 0252-11 | Engine Software Incorrect | Incorrect engine software. Flash code 59. | Warning | Perform "ECM Memory - Test" |
| 0253-02 | Check Customer or System Parameters | Customer or system parameters are not programmed. Flash code 56. | Warning | Program FLS, FTS, Vehicle Speed Calibration, Rating Number, Engine Serial Number and Injector Codes Calibration |
| 0253-11 | Check Transmission Customer Parameters | Transmission customer parameters must be programmed. Flash code 56. | Warning | Program the transmission customer parameters |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
⚠ Valves must be fully closed.
Tools: Caterpillar Part Number 9S9082 engine turning tool, feeler gauge
⚠ Valves must be fully closed.
⚠ Replace belts for multiple groove pulleys in matched sets.
Tools: Belt tension gauge (110 N / 25 lb force)
Tools: Marking pen
⚠ Ensure that the engine can not be started while this maintenance is being performed.
⚠ Hot engine components can cause burns; allow additional time for the engine to cool before measuring/adjusting valve lash clearance.
⚠ Do not use starting motor to turn flywheel; hot components can burn
⚠ Only qualified service personnel should perform valve lash maintenance.
Tools: 9U-7227 Injector Height Gauge
⚠ The VR3 regulator is protected by a fuse(s) and a solid-state overcurrent protection. If a fuse becomes open, contact a Caterpillar dealer.
Tools: ammeter with capacity over 75 amps
⚠ Do not operate the generator set at a speed higher than one-half of the rated speed.
Tools: 6V-7070 Digital Multimeter, 12 VDC battery, Potential Transformer
Tools: 6V-7070 Digital Multimeter, 146-4080 Digital Multimeter (RS-232)
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Voltage | Phase | Connection | Leads | Notes |
|---|---|---|---|---|
| 3 | Delta - 6 lead | 6 | Winding pitch must be two-thirds or the generator must be derated. | |
| 3 | Wye - 10 lead (high voltage) | 10 | Illustration 13. Only used on 3306B generator sets and 3406C generator sets. Terminal T0 is the neutral lead. | |
| 3 | Wye - 10 lead (low voltage) | 10 | Only used on 3306B and 3406C generator sets. Terminal T0 is the neutral lead. | |
| 3 | Wye - 12 lead (high voltage) | 12 | Terminals T10, T11, and T12 become neutral connections when tied together. | |
| 3 | Wye - 12 lead (low voltage) | 12 | Terminals T10, T11, and T12 become neutral connections when tied together. | |
| 3 | Wye - 4 lead | 4 | Only used on 3306B generator sets and 3406C generator sets. Terminal T0 is the neutral lead. | |
| 3 | Wye - 6 lead | 6 | Terminals T4, T5, and T6 become neutral connections when the terminals are tied together. | |
| three-phase | 10 Lead Wye Configuration - High Voltage | Terminal T0 is the neutral lead | For 3306B and 3406C generator sets only | |
| three-phase | 10 Lead Wye Configuration - Low Voltage | Terminal T0 is the neutral lead | For 3306B and 3406C generator sets only | |
| three-phase | 12 Lead Delta Configuration | Terminals T6 and T9 become the neutral connection when tied together and grounded; T2 and T10 connection is the high phase | ||
| three-phase | 12 Lead Wye Configuration - High Voltage | Terminals T10, T11 and T12 become neutral connection when tied together | ||
| three-phase | 12 Lead Wye Configuration - Low Voltage | Terminals T10, T11 and T12 become neutral connection when tied together | ||
| three-phase | 4 Lead Wye Configuration | Terminal T0 is the neutral lead | For 3306B and 3406C generator sets only | |
| three-phase | 6 Lead Delta Configuration | |||
| three-phase | 6 Lead Wye Configuration | Terminals T4, T5 and T6 become neutral connection when tied together | ||
| 240 | 3 | Delta - 12 lead | 12 | Terminals T6 and T9 become the neutral connections when tied together and grounded. T2 and T10 connection is the high phase. 240 V, 60 Hz, three-phase: 208 Volts between the high phase and neutral; 240 Volts between either of the low phases and neutral. |
| 240 | three-phase | Delta Configuration (60 Hz, 12 Lead) | T6 and T9 neutral when tied together and grounded | 208 Volts between high phase and neutral; 240 Volts between either low phase and neutral |
| 480 | three-phase | Wye Configuration (typical series Wye, 60 Hz, 12 Lead) | T10, T11, T12 neutral when tied | For 3406E, 3412C and 3500 series generator sets only - high voltage |
Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.
| Part # | Description | Category |
|---|---|---|
| 102-9720 | Cleaning Kit (detergent and oil for AIRSEP air cleaner elements) | air_filter |
| 106-3973 | Air filter inner | air_filter |
| 142-1404 | Air filter inner | air_filter |
| 1M7250 | Air filter housing | air_filter |
| 4N0015 | Air filter outer | air_filter |
| 55.3 | Air cleaner, single-stage, dry type | air_filter |
| 8N6309 | Air filter outer | air_filter |
| i01491325 | Air Compressor Filter - Clean/Replace | air_filter |
| i01492654 | Battery or Battery Cable - Disconnect | battery |
| i02153996 | Battery - Replace | battery |
| 164-4599 | V-belt | belt |
| 6N6798 | V-belt | belt |
| 7M4705 | V-belt | belt |
| 9L6639 | V-belt | belt |
| M-1W3711 | Alternator, V, .69in (17.5mm) - 67.99in (1727mm) | belt |
| M-7W6129 | Alternator, V, .63in (15.9mm) - 80.00in (2032mm) | belt |
| M-9L6639 | Alternator, V, .63in (15.9mm) - 57.01in (1448mm) | belt |
| 304-7755 | Cat Regeneration System | cat_regeneration_system |
| 111-2369 | Maintenance Element | coolant_filter |
| 8T1589 | Maintenance Charge | coolant_filter |
| 8T9190 | Refill Charge | coolant_filter |
| 128-4124 | Kit without Conditioner | coolant_kit |
| 163-1128 | Kit with Liquid | coolant_kit |
| 163-1129 | Kit with Element | coolant_kit |
| 1R-1712 | Standard Efficiency Fuel Filter | filter |
| 1R-1740 | Standard Efficiency Fuel Filter | filter |
| 119-5152 | Cat Engine Oil (quart bottle) | fluid |
| 174-6854 | Hydrosolv 100 liquid cleaner, 19 L (5 US gallon) | fluid |
| 1U-5490 | Hydrosolv 4165 liquid cleaner, 19 L (5 US gallon) | fluid |
| 5N-5561 | Silicone Lubricant | fluid |
| 133-5673 | Fuel/Water Separator | fuel_filter |
| 151-2409 | Filter water separator | fuel_filter |
| 1R-0749 | Fuel Secondary - ADV | fuel_filter |
| 1R-0750 | High Efficiency Fuel Filter | fuel_filter |
| 1R0749 | Filter fuel | fuel_filter |
| 1R0750 | Filter fuel | fuel_filter |
| 1R0751 | Fuel Filter (secondary) | fuel_filter |
| 326-1641 | Filter water separator | fuel_filter |
| 326-1642 | Filter water separator | fuel_filter |
| 326-1643 | Filter water separator | fuel_filter |
| 326-1644 | Radial seal FWS | fuel_filter |
| 3S3875 | Filter fuel | fuel_filter |
| 8N0205 | Filter water separator | fuel_filter |
| 8N9803 | Filter water separator | fuel_filter |
| 9N3717 | Filter water separator | fuel_filter |
| 1282922CAT | Water Pump Gasket Set - 0.4 lbs/ 0.18 kgs, 5" Length, 27mm Width, 27mm Depth, 11 Application: 3400 | gasket |
| 138-4611 | Gasket exhaust manifold | gasket |
| 1425868CAT | Crankshaft Oil Seal Group Gasket - Rear, 3400, 0.7 lbs/ 0.31 kgs, 17mm Length, 5" Width, 17mm Depth; Flanged Face Sleeve | gasket |
| 153-9653 | Gasket cylinder head | gasket |
| 1539653CAT | Cylinder Head Gasket - 3406E; ESN's: 1LW0001-00229; 2SW0001--0405; 5DS0001-00048; 6TS0001-20554; 5EK 0001-up | gasket |
| 1609874CAT | Single Cylinder Liner Gasket Set - 3406/ 3412 0.1 lbs/ 0.04 kgs | gasket |
| 1669144CAT | Housing Gasket - Front, 3406E | gasket |
| 2161252CAT | Single Cylinder Head Gasket Set - 3406/ 3406E | gasket |
| 2245122CAT | Cylinder Head Gasket - 3406E | gasket |
| 2486744CAT | Single Cylinder Head Gasket Set - 5.6 lbs/ 2.54 kgs, For Use On C-9 MFF; 3406E 1LW; 3406E 1mm, 3406E 2WS; 3406E 5DS; 3406E 6TS | gasket |
| 3406462MCBCAT | Inframe Chassis Gasket Set - 3406E 5EK | gasket |
| 4N1151 | Gasket oil pan | gasket |
| 9Y1979 | Gasket exhaust manifold | gasket |
| DM-3E3305 | GASKET SET, WP OH 3412 | gasket |
| DM-8C4402 | GASKET SET, FUEL SYSTEM 3412 | gasket |
| M-1252107 | Fuel System Set | gasket |
| M-1282922 | Water Pump Mounting Gasket | gasket |
| M-1415787 | Oil Cooler Set | gasket |
| M-1429672 | Central & Lower Set | gasket |
| M-1609874 | Gasket Set - Cylinder Liner Packing | gasket |
| M-2088350 | Air Compressor Set | gasket |
| M-2323679 | Rear Structure Set | gasket |
| M-2410825 | Turbocharger Installation Set | gasket |
| M-3639020 | Gasket Set - Central & Lower | gasket |
| M-3639024 | Gasket Set - Rear Structure | gasket |
| M-3648129 | Gasket Set - Rear Structure | gasket |
| M-3648338 | Gasket Set - Front Structure | gasket |
| M-3766577 | Front Structure Set | gasket |
| M-4359418 | Gasket Set - Front Structure | gasket |
| M-4499116 | Gasket Set - Front Structure | gasket |
| M-4599781 | Gasket Set - Oil Cooler & Lines | gasket |
| M-4600714 | Gasket Set - Central & Lower | gasket |
| M-4600735 | Gasket Set - Rear Structure | gasket |
| M-4600780 | Gasket Set - Single Cylinder Head | gasket |
| M-4620795 | Gasket Set - Oil Cooler & Lines | gasket |
| M-4627233 | Gasket Set - Rear Structure | gasket |
| M-4679007 | Gasket Set - Rear Structure | gasket |
| M-4711663 | Gasket Set - Central & Lower | gasket |
| M-4N1151 | Oil Pan Gasket | gasket |
| M-4N1151-6 | Oil Pan Gasket | gasket |
| M-5P5678-6 | Valve Cover Gasket | gasket |
| M-5P5678-9 | Valve Cover Gasket | gasket |
| MC1F7C2888CAT | Inframe Overhaul Kit - 3406E 5EK | gasket |
| MCB3406461 | Overhaul Gasket Set | gasket |
| MCB3406462 | In-Chassis Gasket Set | gasket |
| MCB3406463 | Cylinder Head Gasket Set | gasket |
| MCB3406463CAT | Cylinder Head Gasket Kit - 3406E 5EK | gasket |
| MCB3406471 | Overhaul Gasket Set | gasket |
| MCB3406472 | In-Chassis Gasket Set | gasket |
| MCB3406473 | Cylinder Head Gasket Set | gasket |
| MCB3406473CAT | Cylinder Head Gasket Kit - 3406E LLW 2WS 5DS 6T | gasket |
| MCBC15993 | Cylinder Head Gasket Set | gasket |
| 3T8705 | Glow plug | glow_plug |
| 3T8706 | Glow plug | glow_plug |
| 3T9561 | Glow plug | glow_plug |
| 3T9562 | Glow plug | glow_plug |
| 1R0741 | Filter hydraulic | hydraulic_filter |
| 9T0973 | Filter hydraulic/transmission | hydraulic_filter |
| 3N8449 | IMPELLER | impeller |
| 7N5910 | Water pump impeller | impeller |
| IMP0026 | IMPELLER | impeller |
| 8S-2245 | Injection Cleaning Tool Group (fuel injection nozzles) | injector |
| R-10R0955 | Fuel Injector - Reman | injector |
| R-10R0956 | Fuel Injector - Reman | injector |
| R-10R1000 | Fuel Injector - Reman | injector |
| R-10R1273 | Fuel Injector - Reman | injector |
| R-10R2780 | Fuel Injector - Reman | injector |
| R-10R3261 | Fuel Injector - Reman | injector |
| R-10R3265 | Fuel Injector - Reman | injector |
| R-10R6163 | Fuel Injector - Reman | injector |
| R-10R8501 | Fuel Injector - Reman | injector |
| g00467451 | Illustration 1: Warning label for the electronic unit injector is typically located on the valve cover base. | injector |
| g00467452 | Illustration 2: Electrical shock hazard. The electronic unit injector system uses 90-120 volts. | injector |
| 296-8325 | Crankcase Ventilation (CV) Filter | ocv_filter_cartridge |
| 102-2828 | Filter oil | oil_filter |
| 10R-9557 | Oil Filter | oil_filter |
| 175-7546 | Oil Filter Cutter | oil_filter |
| 1R-0713 | Oil Filter (Engine) (Alternative) | oil_filter |
| 1R-0716 | Engine Oil | oil_filter |
| 1R-1808 | Engine Oil - ADV | oil_filter |
| 1R0716 | Filter oil | oil_filter |
| 1R0719 | Filter oil | oil_filter |
| 1R1808 | Filter oil | oil_filter |
| 9M9740 | Filter oil | oil_filter |
| 101-2844 | 1 gallon (3.8L) | other_service |
| 124-2946 | Lifting Bracket | other_service |
| 1343761CAT | Piston Ring - Top, 3406E | other_service |
| 169-8373 | Fluid Sampling Bottle | other_service |
| 16CM43-0001 | Cylinder Head Assembly | other_service |
| 16CM43-0002 | Piston Assembly | other_service |
| 16CM43-0003 | Connecting Rod Assembly | other_service |
| 16CM43-0004 | Crankshaft Assembly | other_service |
| 16CM43-0005 | Valve Train Assembly | other_service |
| 1765749CAT | Piston Ring - Intermediate, 3406E | other_service |
| 177-9778 | Base | other_service |
| 1899771CAT | Oil Control Piston Ring - Intermediate, 3406E/ C15 | other_service |
| 195-1068 | Base | other_service |
| 206-5756 | PrimeTime Prime Only Configuration Kit | other_service |
| 256-0326 | Oxidation Catalyst Assembly - Round | other_service |
| 4C-9301 | Coolant Conditioner Test Kit | other_service |
| 5P-3413 | Pipe Sealant for external threads of the zinc rod plug | other_service |
| 703493 | SHAFT | other_service |
| 7N3229 | Connecting rod | other_service |
| 8N1721 | Connecting rod | other_service |
| 8N1728 | Connecting rod | other_service |
| 8N1984 | Connecting rod | other_service |
| 8T-5296 | Coolant Conditioner Test Kit | other_service |
| 9S-3263 | Compound for the shoulder of a new zinc rod | other_service |
| 9Y6054 | Connecting rod | other_service |
| DZ111166 | (3402) (3404) (3408) (3409) (974G) | other_service |
| DZ114695 | DEF TANK INLET SCREEN | other_service |
| LEHW0155-01 | CATERPILLAR® ENGINE SPECIFICATIONS | other_service |
| M-2485513 | 1 Regulator - 180ºC | other_service |
| M-3327309 | Camshaft | other_service |
| MRS3406E2CAT | Ring Set - 3406E | other_service |
| PEHP3036 | Cat Reman Short and Long Blocks | other_service |
| PEHP3036-01 | Cat Reman Short and Long Blocks | other_service |
| SHA0048 | SHAFT | other_service |
| g00104545 | Illustration 4 | other_service |
| g00107406 | Illustration 1: Safety message for the clutch located on the clutch housing (if equipped). | other_service |
| g00107407 | Illustration 2: Safety message for rotating gears that can cause entanglement of the fingers and hands. | other_service |
| g00294510 | Improper jumper cable connections can cause an explosion resulting in personal injury. | other_service |
| g00704000 | Illustration 8 | other_service |
| g00704059 | Illustration 9 | other_service |
| g00704135 | Illustration 10 | other_service |
| i00909638 | General Hazard Information: Attach a “Do Not Operate” warning tag or a similar warning tag to the start switch or to the controls before the engine is serviced or before the engine is repaired. | other_service |
| i00910470 | Engine Starting | other_service |
| i00911989 | Before Starting Engine | other_service |
| i01359666 | Crushing Prevention and Cutting Prevention | other_service |
| i01372247 | Mounting and Dismounting | other_service |
| i01372254 | Fire Prevention and Explosion Prevention | other_service |
| i01372262 | Illustration 4: Safety message for flammable fluids and hot surfaces. | other_service |
| i01480768 | Burn Prevention | other_service |
| i01658146 | Important Safety Information | other_service |
| i01805780 | Before Starting Engine | other_service |
| i01828962 | Safety Messages | other_service |
| i01914266 | Troubleshooting Section | other_service |
| i02310010 | Operation and Maintenance Manual (SEBU7005-08) | other_service |
| i02345910 | Do not allow unauthorized personnel on the engine or around the engine when the engine is serviced. | other_service |
| 135-4925 | Water pump | pump |
| 1354925CAT | New Water Pump - 3406E | pump |
| 137-1339 | Water pump | pump |
| 161-4111 | Oil pump | pump |
| 161-4113 | Oil pump | pump |
| 1615719CAT | New Water Pump - fits 3406E & C15 | pump |
| 172-7766 | Water pump | pump |
| 1U-5718 | Vacuum Pump | pump |
| 1W1695 | Lift/transfer pump | pump |
| 352-0211 | Water pump | pump |
| 384-8611 | Lift/transfer pump | pump |
| 384-8612 | Lift/transfer pump | pump |
| 6I1346 | Oil pump | pump |
| 703613 | PUMP ASSY | pump |
| DM-6I3890 | WATER PUMP 3406E | pump |
| JPR-CT3412 | PUMP ASSY | pump |
| M-1052508 | 1 Fuel Priming Pump | pump |
| M-1354925 | Water Pump | pump |
| M-1375541 | Fuel Priming Pump | pump |
| M-1614113 | Oil Pump | pump |
| M-1615719 | Water Pump | pump |
| M-3848611 | Pump - Transfer | pump |
| M-4N733 | Oil Pump | pump |
| RW6012XM1DRMAN | Reman Water Pump - 3406E | pump |
| RW6014XM1DRMAN | Reman Water Pump - Cat 3406E Straight Teeth | pump |
| 142-5867 | Front seal | seal |
| 142-5868 | Rear seal | seal |
| 1422329CAT | Drainback Seal - 3406E | seal |
| 4W3864 | Water pump seal | seal |
| 5N2902 | OIL SEAL | seal |
| 5N6055 | M-SEAL | seal |
| DM-6J6915 | SEAL RING 3304 | seal |
| JMK0002 | SEAL KIT | seal |
| M-1425867 | Front Crankshaft Seal | seal |
| M-1425868 | Rear Crankshaft Seal | seal |
| M-1632478 | 6 6 Valve Stem Seal - Exhaust | seal |
| M-2274239ORK | Injector Sleeve O-Ring Kit | seal |
| M-2287094 | Nose O-ring | seal |
| M-2481394 | Injector O-Ring Kit | seal |
| M-3S9643 | Regulator Seal | seal |
| M-5S2106 | Fan Hub Seal | seal |
| M-7F2122 | Fan Hub O-Ring Seal | seal |
| MCSSET0009 | M-SEAL | seal |
| RET0020 | OIL SEAL | seal |
| 3E2026 | Switch | sensor |
| 4P-7610 | Magnetic Pickup Group (engine speed/timing sensor in flywheel housing) | sensor |
| 9G8010 | Switch | sensor |
| M-1946722 | Sensor - Pressure | sensor |
| M-1946724 | Sensor - Pressure | sensor |
| M-1946725 | Sensor - Pressure | sensor |
| M-2244536 | Sensor - Pressure | sensor |
| M-2566453 | Sensor - Temperature | sensor |
| M-2644297 | Sensor - Temperature | sensor |
| M-2842728 | Sensor - Pressure | sensor |
| ESD5500E | Speed Controller | speed_controller |
| 111-8010 | Thermostat | thermostat |
| 247-7133 | Thermostat | thermostat |
| 248-5513 | Thermostat | thermostat |
| M-2477133 | Regulator - 190° | thermostat |
| M-4W4011 | Regulator - 170° | thermostat |
| 1U-8760 | Chain Wrench | tool |
| 9U-7227 | Injector Height Gauge | tool |
| 16CM43-0006 | Turbocharger Assembly | turbocharger |
| 4N8969 | Turbocharger | turbocharger |
| 7C7691 | Turbocharger | turbocharger |
| PEHP7069-01 | Reman Water Pump | water_pump |
| 305-2389 | Wire Brush | wire_brush |
Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.
Parts listed by aftermarket suppliers as fitting this engine — leads compiled from supplier catalogs; verify the exact part for your serial number.
Cross-referenced via Donaldson + OEM/engine-maker interchange — options to verify against your serial number, not confirmed for every exact variant.
Other equipment known to use this engine, via filter-application cross-reference — useful for sourcing parts even when your exact machine isn't listed elsewhere on this page.
The Caterpillar 3412E engine has an oil capacity of 730.0 liters.
The Caterpillar 3412E has a displacement of 12.0 liters with 6 cylinders.
The Caterpillar 3412E powers 117 generator set(s), including Caterpillar 12CM32, Caterpillar 12CM43, Caterpillar 14CM43, Caterpillar 16CM32, Caterpillar 16CM43.
The Caterpillar 3412E uses oil filter part numbers Caterpillar 2P4005, Donaldson P554005, Wix 51792.
The Caterpillar 3412E uses fuel filter part numbers Caterpillar 1165436, Caterpillar 5134490, Caterpillar 3089679.
The Caterpillar 3412E uses air filter part numbers Caterpillar 7T1S90, Caterpillar 1063973, Caterpillar 612506.
The Caterpillar 3412E oil change interval is every 200 hours.
A commonly reported issue on generators using the Caterpillar 3412E is: Increased coolant temperature.