BMW 5 Series Owners & Service Manuals

BMW 5 Series: Crankcase

BMW 5 Series G30 2016-2026 Training Manual / B58TU Engine / Engine Mechanical / Engine housing / 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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    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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     Maintenance

    BMW maintenance system The maintenance system indicates required maintenance measures, and thereby provides support in maintaining road safety and the operational reliability of the vehicle. In some cases, scopes and intervals of the maintenance system may vary according to the country version. Rep

     Malfunction

    Message The yellow warning light flashes and is then illuminated continuously. A Check Control message is displayed. It may not be possible to identify tire pressure losses. Measure A wheel without TPM wheel electronics, such as an emergency wheel, is mounted: have the wheels checked, if needed

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