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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     Vacuum Supply

    Vacuum pump Oil vacuum pump, B58/B58TU engine B58 engine, tandem oil pump with integrated vacuum pump B58TU engine, oil pump Vacuum pump Oil pump Vehicles with a gasoline engine and "traditional brake system" need a vacuum pump to boost the pedal force. In vehicles with a gasoline engine a

     Actions in the event of a flat tire

    Normal tires 1. Identify the damaged tire. Check the tire inflation pressure in all four tires, for instance using the tire pressure gage of a flat tire kit. For tires with special approval: if the tire inflation pressure in all four tires is correct, the TPM may not have been reset. In this case,

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