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

WARNING: This page is about a different variant/trim than selected.

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: Pressing Down Valve Spring Using Special Tools (11 0 009) And (11 9 017)

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: Pressing Spring Cup Valve Spring Using Special Tools (11 0 009) And (11 0 346)

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 Tapers

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

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

Fig 4: Identifying Valve Spring Colour Marking

Arrangement:

Fig 5: Identifying Valve Related Components

Assemble engine.

Check function of DME control unit.