BMW 5 Series: Crankcase
Honing process

Honing process "old/new"
- Previous manufacturing process of internal cylindrical honing
- 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
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
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Map
Opening the map
The map can be accessed directly
with the
button on the Controller.
Overview
General information
The map can be used via iDrive.
Basic entry explanation, refer to the Owner's
Manual for the vehicle.
Map view
With operation via touchscreen: change map
view
Status field
Op
Concept
Teleservices are services that help to maintain
vehicle mobility.
General information
The offering depends on the equipment version
of the vehicle and the country-specific variant.
For further information on the available services,
the vehicle manufacturer recommends contacting
a service ce