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Home >> BMW >> 2007 >> 335i 2D Convertible, Automatic >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Engine - Repair (N54) >> 34 Valves With Springs >> 11 34 715 Replacing All Valve Springs (N54)

11 34 715 Replacing All Valve Springs (N54)

Special tools required: 

IMPORTANT:

Different valve stem diameters.

Mixing up the valve springs will result in damage to the engine.

Necessary preliminary tasks: 

Inlet valves: 

Place cylinder head on special tool 11 9 000. See 11 9 000 CYLINDER HEAD EXPANDER TOOL

Press valve spring down on spring retainer with special tools 11 0 009 and 11 9 017.

Fig 1: Identifying Special Tool (11 9 000) On Cylinder Head
G04754994Courtesy of BMW OF NORTH AMERICA, INC.

Exhaust valves: 

Place cylinder head on special tool 11 9 000. See 11 9 000 CYLINDER HEAD EXPANDER TOOL

Press valve spring down on spring retainer with special tools 11 0 009 and 11 0 346.

Fig 2: Identifying Special Tools (11 0 009 & 11 0 346) On Spring Retainer
G04754995Courtesy of BMW OF NORTH AMERICA, INC.

Remove valve tapers with a magnet.

Remove valve spring and spring retainer.

Set down on special tool 11 4 480 in a tidy and orderly fashion. See 11 4 480 PLACEMENT BOARDS (2X)

Fig 3: Removing Valve Spring & Spring Retainer
G04207672Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT:

Incorrect installation possible.

Incorrect installation will result in valve spring breakage.

Color marking (1) is normally on lower end of valve spring.

Installation: 

Inlet valve: Violet/green or violet/yellow

Exhaust valve: White/green or white/yellow

If the colors on the valve springs can no longer be identified, these must be replaced for safety reasons.

Fig 4: Identifying Color Mark On Valve Spring
G04740095Courtesy of BMW OF NORTH AMERICA, INC.

Arrangement:

  1. Valve
  2. Valve stem seal with spring plate, bottom
  3. Valve spring
  4. Top plate spring
  5. Valve tapers
    Fig 5: Identifying Valve Arrangement Position
    G04740096Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Check function of DME.