BMW 3: Chain tensioner
BMW 3 Series G20 (2018-2026) Training manual / B46TU-B48TU Engines / Engine Mechanical / Chain tensioner
Chain tensioner
- Tensioning rail
- Sealing sleeve
- Chain tensioner with screw thread
Due to the cylinder head manufacturing process, the chain tensioner now has a sealing sleeve with a height of 12.5 mm instead of a sealing ring.
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Valve gear
VANOS
VANOS unit B46 engine and B46TU/B48TU engines
VANOS B46 engine
VANOS B46TU and B48TU engine
Following the changeover from a two-part chain drive to a single-part chain
drive, the camshaft
Belt drive
Comparison belt drive B46 engine and B46TU/B48TU engines
B46 Engine (transverse installation shown)
B46TU/B48TU engines (transverse installation shown)
Deflecting element
Alternator
Coolant p
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Child restraint systems
with tether strap
Safety information
Warning
If the upper retaining strap is incorrectly used
for the child restraint system, the protective effect
can be reduced. There is a risk of injury.
Make sure that the upper retaining strap does
not run over sharp edges and is not twisted as
it passes the upper anchor.
Warn
ConnectedDrive Services
Functional requirements
Subscription to the optional Convenience
Plan.
The date setting on the Control Display is
current, see Owner's Manual for the vehicle.
Cellular network reception must be available.
ConnectedDrive Store
Concept
In vehicles with specific technical requirements,
various s
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