Mercedes OM457 Diesel Engine Manuals
The Mercedes Benz OM457 Engine is a 12.0 liter (11,967 cc) displacement inline 6-cylinder diesel motor with differing trim and power levels. It was produced from 2003-on
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Download: OM457.960 Engine Service Manual
Mercedes Benz OM457 Engine Service
Download: 56.7mb
Contents: 225 pages, .pdf
Manual: OM457.960
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$19.95
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Download: OM457 LA Engine Maintenance Repair Manual
Mercedes Benz OM457LA Engine Service
Download: 38.3mb, 234 pages, .pdf
Multi Unit Manual: OM457 OM501 OM502 OM904 OM906
Maintenance and Repair Advanced Training
USD
$14.95
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Download: MB OM457 Engine Operation Instructions
Mercedes Benz OM457 Engine Operation Manual
Download: 13.6mb, 104 pages, .pdf
Models: OM457 OM460 BlueTec
Motors: OM457LA - OM460LA
USD
$9.95
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OM457 Engine Technical Data
In April 1993 Mercedes-Benz AG and Detroit Diesel Corporation (DDC) concluded agreements to develop a diesel engine for heavy trucks and buses. The OM457 LA engine is a turbocharged 12-litre in-line six-cylinder that features four-valves-per-cylinder technology and an electronically controlled injection system with unit pumps.
The engine is water-cooled, and is produced using cast-iron cylinder block, with removable wet type cylinder liners. The engine utilizes diesel fuel direct injection from individual electronically controlled and camshaft actuated unit pumps. The cylinder heads are separate units for each cylinder.
The crankshaft is a precision forged running on seven three-layer bearings with counterweights bolted onto the crank webs. The middle bearing is also the thrust bearing and connecting rods are of a split design, with bronze bushings for the piston pins.
Version Specifications:
- Mercedes Benz Type: OM Diesel
- Model: 457.951 LA
- Combustion System: Four-stroke diesel with direct injection
- Number of cylinders and arrangement: vertical inline-6
- Bore × Stroke, Displacement: 128 mm × 155 mm (5.0 in × 6.1 in), 12.0 L (11,967 cc)
- Compression ratio: 18.5:1
- Rated power: 260 kW (354 PS) at 2000 rpm
- Maximum torque: 1.6 k Nm (1,180 lb-ft) at 1100 rpm
- Cylinder Firing order: 1 - 5 - 3 - 6 - 2 - 4
- Maximum pressure of injection nozzles: 1,800 bar (26,000 psi)Max. operating temperature: 100 °C (212 °F)
- Oil pressure: nominal 2–5 bar (29–73 psi), idle min 0.5 bar (7.3 psi)
- Weight, dry: 1,045 kg (2,304 lb)
Vehicle Applications
The OM457 has many applications, including Truck, marine, military, municipal, and agricultural vehicles, as well as stationary settings.
