Install eccentric shaft

2023 BMW 330e xDriveSECTION Install eccentric shaft
  • Check all needle bearings (arrows) of the eccentric shaft for ease of movement.
  • If the needle bearings are stiff, replace the eccentric shaft.
    G12728914Courtesy of BMW OF NORTH AMERICA, INC.
  • Clean all bearing positions in cylinder head and coat with motor oil.
    G12728915Courtesy of BMW OF NORTH AMERICA, INC.
  • Clean bearing positions (1)  of the bearing brackets and coat with motor oil.
  • Clean the bearing position (2)  of the bearing cap and coat with motor oil.
    G12728916Courtesy of BMW OF NORTH AMERICA, INC.
  • Check all guide bushings (1)  for damage and replace faulty guide bushings (1)  .
    G12728917Courtesy of BMW OF NORTH AMERICA, INC.
  • Slide the needle bearing (1)  up to the stop in the arrow direction before installing the eccentric shaft.
    G11790238Courtesy of BMW OF NORTH AMERICA, INC.
  • Oil all needle bearings of the eccentric shaft (1)  .
  • Insert eccentric shaft (1)  into the cylinder head.
G12728913Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: RISK OF DAMAGE 
Engine damage caused by incorrectly installed bearing shells and bearing brackets  .
If the bearing shells and bearing brackets are installed incorrectly, then engine damage can occur  .
  • Always install all bearing shells and bearing brackets in the same position from which they were removed.
G12728912Courtesy of BMW OF NORTH AMERICA, INC.
  • Install the bearing bracket.

    All bearing brackets must be installed again in the same position from where they were removed.

  • Tighten down screws (1)  .
TIGHTENING TORQUE SPECIFICATION

Eccentric shaft to bearing bracket/cylinder head
M6 Tightening torque  10 Nm
  • Install it with a bearing cap provided with a stop (1)  .
  • Tighten down screws (1)  .
TIGHTENING TORQUE SPECIFICATION

Eccentric shaft to bearing bracket/cylinder head
M6 Tightening torque  10 Nm
G12728911Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work 

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.