BMW 5 Series Owners & Service Manuals

BMW 5 Series: Crankcase

Honing process

Engine housing
Honing process "old/new"

  1. Previous manufacturing process of internal cylindrical honing
  2. New manufacturing process of form honing

The cylindrical bore hole of a combustion engine becomes deformed during the operating condition by thermal loads. Form honing allows this deformation to be achieved in production, so that there is an almost cylindrical shape in the operating condition. This has a positive effect on the emissions quality, oil and fuel consumption, as well as output and wear.

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     Crankshaft drive

     Chain drive

    Features: Chain drive at the side of the engine emitting the forces Single-part chain drive for driving the camshafts Single sleeve-type chain 8 mm Electric motor of the combined oil-vacuum

     Chain track

    Comparison between chain track of B58 engine and B58TU engine Chain track, two-part timing chain drive B58 engine Chain track, single-part timing chain drive B58TU engine 6-cylinder engine Up

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     Range

    Concept The range indicates the distance that can still be covered with the current fuel level. General information The estimated range available with the remaining fuel is permanently displayed in the instrument cluster. With a low remaining range, a Check Control message is briefly displayed. Wit

     Seat heating

    Overview Front Seat heating Rear Seat heating Switching on Press the button once for each temperature level. The maximum temperature is reached when three LEDs are lit. If the trip is continued within approx. 15 minutes after a stop, seat heating is activated automatically with the temperature

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