BMW 5 Series Owners & Service Manuals

BMW 5 Series: Chain drive


  • 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 pump via a separate chain
  • Plastic tensioning and guide rail
  • Hydraulic chain tensioner with spring preload and sealing sleeve.

Crankshaft drive
Comparison of the chain drive of B58 engine and B58TU engine

  1. Two-part chain drive
  2. Single-part chain drive
  1. Slide rail
  2. Top timing chain
  3. Chain tensioner
  4. Tensioning rail
  5. Bottom timing chain
  6. Camshaft sprocket, oil vacuum pump
  7. Drive chain, oil vacuum pump
  8. Guide rail
  9. Timing chain

The main difference between the chain drive compared with the B58 engine is the move from a two- part timing chain drive to a single-part timing chain drive. Deflection via the intermediate shaft on the top timing chain and the second timing chain is no longer needed. The chains used here are 8 mm sleeve-type chains. Because the intermediate gearing is no longer needed, the number of teeth on the crankshaft (23 teeth) and the VANOS adjuster (46 teeth each) has also changed.


     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

     Valve gear

    VANOS VANOS B58 engine VANOS B58TU engine Following the changeover from a two-part chain drive to a single-part chain drive, the camshaft sprockets on the VANOS now need 46 teeth instead of the

     Vacuum Supply

    Vacuum pump Oil vacuum pump, B58/B58TU engine B58 engine, tandem oil pump with integrated vacuum pump B58TU engine, oil pump Vacuum pump Oil pump Vehicles with a gasoline engine and "traditio


     Closing the trunk lid

    Safety information Warning An open trunk lid protrudes from the vehicle and can endanger occupants and other traffic participants or damage the vehicle in the event of an accident, braking or evasive maneuvers. In addition, exhaust fumes may enter the car's interior. There is a risk of injury or ri

     Exterior/Interior Mirrors

    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

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