Mercedes OM473 Diesel Engine Manuals
The Mercedes-Benz OM 473 engine is a 15.6L six-cylinder “BlueEfficiency Power” diesel motor engineered for heavy trucks and is rated up to 625 hp and 2,213 lb-ft of torque at just 1,100 rpm. It’s built to meet strict Euro VI emissions standards and has the power to haul large loads over demanding topography.
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Download: Mercedes OM473 Diesel Engine Service Manual
- Mercedes Benz OM470LA, OM471LA, OM473LA Diesel Engines
- Application: Manual applies to the Mercedes diesel engines below: (LA= Turbo Intercooled)
Download: 95.6mb, 504 pages, .pdf
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$19.95
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Download: MB OM473 Engine Operation Manual
Mercedes Benz OM473 Engine Operating Instructions
Download: 20.9mb, 72 pages, .pdf
Motors: OM470, OM471,
OM473
Format: pdf document
USD
$9.95
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OM473 Engine Technical Data and Development
By the start of production, the OM 473 engine had covered 1.15 million test miles—including intense driving cycles in the Spanish Sierra Nevada, cold tests in Scandinavia, and endurance runs in South Africa. The engine was also pushed in overload conditions with double tractor-trailer combinations pulling 132,277 pounds (66 tons/60 metric tons). That’s in addition to five years of real-world operation by its Detroit Diesel cousin, the 15.6L DD16, with a number of those units having already covered more than 1,000,000 miles. While the engines share the same block design, the Mercedes-Benz version has more than 200 unique parts and is created at different manufacturing plants.
OM473 Technology
The OM473 technology is based on the same platform as the 12.8 liter OM 471 but with an increased capacity of 15.6-litres with outputs up to 625hp and up to 3,000 Nm of torque. The OM 473 employs "turbocompounding" - essentially a second turbine located downstream of the exhaust gas turbocharger that uses the exhaust gas temperature after the gas flows through the main turbocharger. The power is transferred via a shaft and hydrodynamic clutch to the engine's gear drive and thus directly to the crankshaft.
The Mercedes-Benz OM 473 shares its engine block design with the 15.6L Detroit Diesel DD16 that makes up to 600 hp and 2,050 lb-ft of torque and the 14.8L DD15 that makes up to 505 hp and 1,750 lb-ft. The American inline-six engines are EPA 2010 compliant.
Specifications
- Engine: Mercedes-Benz OM 473
- Displacement: 15.6L (952 ci)
- Engine layout: Inline six-cylinder
- Power: 625 hp at 1,600 rpm
- Torque: 2,213 lb-ft at 1,100 rpm
- Engine braking: 625 hp three-stage Jacobs engine brake
- Bore x Stroke: 5.47 x 6.73 inches (139 mm x 171 mm)
- Compression ratio: 17:1
- Injection: Six-hole injectors/30,458 psi (2,100 bar)
- Valvetrain: Dual overhead hollow composite camshafts/four valves per cylinder
- Induction: Compound atmospheric turbo/ hydrodynamic direct-drive turbo
- Head Material: Compacted graphite iron
- Block Material: Cast iron
- Piston Material: Steel
- Emissions: Euro VI compliant with EGR, DPF, and SCR
- Engine Length: 4 feet 8 inches (1,425 mm)
- Engine Width: 3 feet 8 inches (1,128 mm)
- Engine Height: 3 feet 11 inches (1,212 mm)
- Engine Weight: 2,831 pounds (1,284 kg)
Vehicle Applications
The om473 can be found in trucks like the Freightliner Cascadia and Western Star 6900 XD, which is used for logging, mining, heavy hauling, recovery, and more.
- Actros Commercial Vehicles
OM473 Engine Resources
