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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SEE MORE:
Exterior mirror
System wiring diagram
Exterior mirror
Outside temperature sensor
Fuses in the power distribution box, front right
Body Domain Controller (BDC)
Exterior mirror, front passenger's side
Switch block, driver's door
Exterior mirror, driver's side
Instrument panel (KOMBI)
Inside
Concept
Contact the BMW Group Roadside Assistance if
assistance is needed in the event of a breakdown.
General information
In the event of a breakdown, data on the vehicle's
condition is sent to the vehicle manufacturer.
There are various ways of making contact.
Via a Check Control message.
Call