Mercedes-Benz OM602 engine

The successor of the OM617 engine|OM617] engine family was the newly developed straight-5 diesel automobile engine OM602 from Mercedes-Benz used from 1980s up to 2002. With some OM602 Powered Mercedes-Benz vehicles exceeding, it is considered to be one of the most reliable engines ever produced, a success which is only comparable with the famous OM617 engine.
It is closely related to the 4 cylinder OM601 engine|OM601] and the 6 cylinder OM603 engine families of the same era.
The 5-cylinder OM602 was succeeded by the four-valve OM605 engine|OM605] engine and later the OM612 engine|OM612] and OM647 engine|OM647] engines with turbocharger and common rail Fuel injection#Direct [injection systems|direct injection].

The engine

The Mercedes OM602 engine is a 5-cylinder diesel engine of. The was used in the 310D and 410D Mercedes-Benz T1 and the Phase 1 Mercedes-Benz Sprinter vans, the Ssangyong Musso, Korando and Rexton range and even in the 1996–1999 models of the E-class.
It was available in either naturally aspirated or turbocharged variants with two valves per cylinder.
The camshafts and injection pump are driven by duplex chain from the crankshaft. A separate single-row chain drives the oil pump. The camshaft operated the valves via hydraulic bucket tappets; valve clearance adjustment is automatic. The water pump is driven via the single serpentine belt, which also drives all other accessories.
On many OM602 engines fuel injection is indirect. A Bosch PES in-line injection pump is used, with a mechanical governor and vacuum-operated stop control. The pump is lubricated by a connection to the engine oil circulation and the fuel lift pump is mounted on the side of the injection pump.
Some later versions of the capacity unit use a Bosch VE-style rotary distributor injection pump with electronic control and have a significantly different combustion chamber as they use direct injection.
Preheating is by glow plugs with automatic control of preheating time.