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  • Mercedes OM 604 605 606 engine (1993-2001)
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Info

Mercedes-Benz OM 604 / OM 605 / OM 606 diesel engine 

Mercedes Benz
Mercedes-Benz OM 604 / OM 605 / OM 606 diesel engine
OM 604, OM 605, OM 606
Manufacturer:Mercedes Benz
Production period:1993-2001
Style:Four-cylinder OM 604

Inline five-cylinder OM 605 
inline six-cylinder OM 606

Engines:2.0 liters (1997 cc) 
2.2 liters (2155 cc) 
2.5 liters (2497 cc) 
3.0 liters (2996 cc)
Previous model:OM 601 (4-cylinder) 
OM 602 (5-cylinder) 
OM 603 (6-cylinder)
Successor:OM 611 (4-cylinder) 
OM 612 (5-cylinder) 
OM 613 (6-cylinder)

 

The OM 604 series is a series four-cylinder diesel engine with prechamber injection from Mercedes-Benz . It is a further development of the OM 601 and has four valves per cylinder. Like its predecessor, the engine block is made of gray cast iron and the cylinder head is made of light metal .

The use of four-valve technology in a passenger car diesel was a world first at this time. Utilizing this technology not only increased torque and performance over a much wider engine speed range, but also reduced fuel consumption at full load by up to 8 percent. In addition, the particle emission in the exhaust gas was reduced by around 30 percent thanks to the optimized combustion process. Other measures for efficient exhaust gas purification were exhaust gas recirculation and the standard oxidation catalytic converter .

The OM 604 was first used in 1993 in the C-Class ( 202 series ) and 1995 in the new E-Class ( 210 series). These had the only Mercedes-diesel a distributor injection pump (electronic distributor injection pump, short EVE ) from Lucas instead of the proven in-line injection pumps from Bosch .

The gaskets of Lucas injection pumps become brittle and leaking over time. Since the replacement of the entire injection pump is very costly, a repair kit is offered in which the affected seals are replaced. 

OM 605 / OM 606

The series OM 605 (five-cylinder) and OM 606 (six-cylinder) were built on the same technical basis . From 1993, OM 605 and OM 606 (E 250 diesel and E 300 diesel) were installed as naturally aspirated engines in the 124 series , where parallel two-valve engines were used as a turbo engine.

In the first C-Class (W202) of the OM 605 was available with the introduction of the 1993 series, from 1995 then available exclusively as a turbo diesel with the designation C 250 TD. The larger OM 606 six-cylinder turbo diesel could be ordered now in the E-Class (210 series) and E 300 TD.

As of 1997, these engines were also available in the successor 210 series with an exhaust gas turbocharger .

With the exception of the OM 604 D20, which was produced in small quantities for the southern European market, the OM 604 four-cylinder engine, in contrast to the OM 605 and OM 606, had larger bore values ​​(89 mm) and stroke (86.6 mm). , but a smaller total cubic capacity of 2155 cc. 

Related items
Mercedes S4 Engines | Mercedes diesel engines | Straight-4 Engines | Diesel engines | Mercedes E-Class | Mercedes C-Class

Technical

  • Mercedes OM 604 605 606 engine Technical details and specifications (1993-2001)

    Technical Data

    sales designationengine typemodelPower at (1 / min)Torque at (1 / min)chargingconstruction time
    4-cylinder
     Displacement: 2.0 L 1997 cm³, bore × stroke: 87 × 84 mm
    C 200 Diesel ( W / S 202)OM 604 D 20604,915 EVE65 kW (88 hp) at 5000135 Nm at 2000without1996-1998 
    E 200 Diesel ( W 210 )604,917 EVE1996-1998 
     Displacement: 2.2 L 2155 cc, bore × stroke: 89 × 86.6 mm
    C 220 Diesel ( W / S 202)OM 604 D 22604,910 EVE55 kW (75 hp) at 5000150 Nm at 3100without1996-1998 (taxi version, reduced power and PME- suitable)
    E 220 Diesel ( W 210 )604,912 EVE
    C 220 Diesel ( W / S 202)604,910 EVE70 kW (95 hp) at 50001993-1998
    E 220 Diesel ( W 210 )604,912 EVE1995-1998 
    5-cylinder
     Displacement: 2.5 L 2497 cc, bore × stroke: 87 × 84 mm
    C 250 Diesel ( W 202 )OM 605 D 25605,910 ERE83 kW (113 hp) at 5000170 Nm at 2800without1993-1995 
    E 250 Diesel ( W / S / V / VF / F 124 )6059111993-1996 
    E 250 Diesel ( W / S / VF 210 )605,912 ea1996-1998 
    C 250 turbo diesel ( W / S 202 )OM 605 D 25 LA605,960 ea110 kW (150 hp) at 4400280 Nm at 1800turbocharger1995-2001 
    E 250 turbo diesel ( W / S 210 )605,962 ERE1997-1998 
    6-cylinder
     Displacement: 3.0 L 2996 cc, bore × stroke: 87 × 84 mm
    E 300 Diesel ( W / S 124)OM 606 D 30606910100 kW (136 hp) at 5000210 Nm at 2200-4600without1993-1996 
    E 300 Diesel ( W 210 )606,912 ERE1995-1997
    E 300 turbo diesel ( W / S 210 )OM 606 D 30 LA606,962 ERE130 kW (177 hp) at 4400330 Nm at 1600-3600turbocharger1997-1999
    S 300 turbo diesel ( W 140 )606,961 ERE1997-1999 
    G 300 Turbodiesel ( W 463 )606,964 ERE1997-2001

    Mercedes-Benz 2.2D Engine code: 604 

    No. of cylinders 4/DOHC
    Capacity 2155cc
    Compression ratio 22:1
    Fuel/injection Make Lucas CAV Type R86 40A 030A
    Injection sequence 1-3-4-2
    Injector nozzle Make Lucas CAV No. LDC-001 R03
    Nozzle opening pressure - 115-125 bar
    Oil pressure 3.0 bar @ 3000 rpm
    Alternator output 70A
    Thermostats open 83-87°C

    © Motor car History

     

Service

  • Mercedes OM 604 605 606 engine Service Guide (1993-2001) 

    Mercedes-Benz 2.2D Engine code: 604
     

    Glow plug - part no. Bosch 0 250 201 038
    Glow plug - part no. Champion CH177/175
    Glow plug - part no.Lucas/CAV HDS354
    Glow plug - part no. NGKY-930U/925R
    Glow plugs Tighten 20 Nm
    Valve clearance - INLET Hydraulic
    Valve clearance - EXHAUST Hydraulic
    Drive belt size - alternator 2050mm
    Drive belt size - AC 2120mm
    Engine oil grade - moderate climate 10W/40SAE or 15W/40SAE Semi-synthetic
    Engine oil grade - cold climate 5W/30SAE
    Engine oil grade - hot climate 20W/40SAE
    Engine oil change 6.5 litres
    Engine oil Sump drain bolt Tighten 30 Nm
    Oil filter Tighten 25 Nm
    Manual gearbox oil grade 75W/80SAE Semi-synthetic.
    Manual gearbox oil 1.5 litres
    Automatic transmission fluid Type ATF 5.5 litres
    Differential oil grade - rear 85W/90 SAE 1.1 litres
    Cooling system 7.0 litres
    Brake fluid Type DOT 4+ 0.4-0.6 litres
    Power steering fluid Type ATF 1.0 litres

    © Motor car History

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