BMW 3 Owners & Service Manuals

BMW 3: Chain tensioner

Crankshaft drive
Chain tensioner

  1. Tensioning rail
  2. Sealing sleeve
  3. 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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    Depending on the vehicle equipment and country version, various settings for opening and closing are possible. These settings are stored for the driver profile currently used. Unlocking and locking Doors Via iDrive: 1. "CAR". 2. "Settings". 3. "Key button settings". 4. Select the symbol. 5. Sel

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