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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     Control elements

    Buttons and functions Press: switches sound output on/off. Turn: adjusts the volume. Change the entertainment source. Press once: changes the station/track. Press and hold: fast forward/ rewind the track. Programmable memory buttons. Changing the waveband/ satellite radio. Depending on the

     Heat management module

    The function of the heat management module is similar to that of the heat management module of the B58 engine. B58TU engine heat management module Coolant output towards the coolant pump Electric split cooling valve Coolant outlet to coolant radiator Electrical actuator, heat management modu

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