11 34 715 Replacing all valve springs (N52K)

2011 BMW Z4 30i, StandardSECTION 11 34 715 Replacing all valve springs (N52K)

Necessary preliminary tasks: 

Place cylinder head on special tool 11 9 000.

Press down inlet valves  with special tool 11 9 017.

Press down exhaust valves  with special tool 11 0 346.

Fig 1: Pressing Down Inlet Valves Using Special Tool (11 9 017)
G04751210Courtesy of BMW OF NORTH AMERICA, INC.

Remove valve cotters with a magnet.

Remove valve spring with spring plates.

If the individual components are to be reused, they must be placed in neat order in special tool 11 4 480.

Fig 2: Removing Valve Spring And Plate Spring
G04207672Courtesy of BMW OF NORTH AMERICA, INC.
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.