11 34 715 Replacing all valve springs (N54, N54T)

Special tools required:

IMPORTANT: Different valve stem diameters.
Mixing up the valve springs will result in damage to the engine.

Necessary preliminary tasks

Intake valves

Fit cylinder head on special tool 11 9 000 .

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

Fig 1: Identifying Special Tools (11 0 009) And (11 0 017)

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Exhaust valves

Fit cylinder head on special tool 11 9 000 .

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

Fig 2: Identifying Special Tools (11 0 009) And (11 0 346)

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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.

Fig 3: Removing Valve Spring And Spring Retainer

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IMPORTANT: Incorrect installation possible.
Incorrect installation will result in valve spring breakage!

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

Installation note:

Einlassventil: Violet/green or violet/yellow

Auslassventil: 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 Valve Spring Color Marking

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Arrangement:

Valve
Valve stem seal with spring plate, bottom
Valve spring
Top plate spring
Valve keys

Fig 5: Identifying Valve, Valve Spring, Top Plate Spring And Valve Keys
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Assemble engine.

Check function of DME control unit.