BMW 3 Owners & Service Manuals

BMW 3: Connecting rod - Crankshaft drive

Crankshaft drive
Connecting rod

  1. Piston
  2. Area transferring the force
  3. Wrist pin
  4. Connecting rod bearing with shaped bore hole
  5. Connecting rod
  6. Connecting rod bearing (B46TU only)
  7. Small connecting rod eye (trapezoidal shape)
  8. Large connecting rod eye (cracked)
  9. Connecting rod bolts of the connecting rod bearing cap
  10. Connecting rod bearing shell of the connecting rod bearing cap
  11. Connecting rod bearing shell of the connecting rod (IROX-coated)

The drop-forged cracked connecting rods with IROX coating are known from the B38/B46 engines.

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     IROX coating - Crankshaft drive

    Detailed magnification of the IROX coating IROX-coated bearing shell Oil film IROX coating Bearing shell Binding resin Hard particle Solid lubricant The IROX coating is applied to a conventi

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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-vacu

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    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

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     Operation via touchscreen

    General information The Control Display is equipped with a touchscreen. You can tap on menu items and widgets. Touch the screen with your fingers. Do not use any objects. Opening the main menu Tap on the symbol. The main menu is displayed. Adjusting widgets The widgets can be adjusted in the main

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    Concept The Sport displays especially support a sporty driving style. Display on the Control Display Overview The following information is displayed: Boost pressure. Engine oil temperature. Acceleration power. Torque. Power. Displays Via iDrive: 1. "CAR". 2. "Driving information". 3. "Sport

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