11 34 715 Replacing all valve springs (N55)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 4 481
11 4 482
11 8 841
11 8 842
11 9 000
11 9 007

Necessary preliminary tasks:

Remove CYLINDER HEAD .
Remove EXHAUST CAMSHAFT .
Remove INTERMEDIATE LEVER .
Remove INTAKE CAMSHAFT .
Remove ROCKER ARM .

Place cylinder head on special tool 11 9 000 .

Align special tool 11 9 007 on particular combustion chamber.

Fig 1: Placing Cylinder Head On Special Tool (11 9 000)

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Position special tool 11 9 007 on cylinder head.

Push locks (1 and 2) toward inside and preload via eccentric shaft.

Fig 2: Positioning Special Tool (11 9 007) On Cylinder Head

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Press down intake valve with special tool 11 8 841.

Fig 3: Locating Special Tool (11 8 841)

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Remove valve key (1) with a magnet.

Remove valve spring with spring cups.

If individual components are to be reused, they must be placed in neat order in special tool 11 4 481 .

Fig 4: Identifying Valve Key And Special Tool (11 4 481)

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Press down discharge valve with special tool 11 8 842.

Fig 5: Identifying Special Tool (11 8 842)

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Remove valve key (1) with a magnet.

Remove valve spring with spring cups.

If individual components are to be reused, they must be placed in neat order in special tool 11 4 482 .

Fig 6: Identifying Valve Key And Special Tool (11 4 482)

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IMPORTANT: Incorrect assembly possible.
Incorrect installation will result in valve spring breakage.
Risk of mixing up the valve springs for the inlet and exhaust valves.

Valve springs are marked in color (1).

Colors for intake valves:

Green/blue
Yellow/Blue

Colors for discharge valves:

Green/white
Yellow/white

Install the valve spring so that the larger diameter points to the lower spring cup.

Fig 7: Identifying Valve Springs Color Code

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Arrangement:

Valve
Valve stem seal with lower spring cup
Valve spring
Upper spring cup
Valve keys

Fig 8: Identifying Valve Components
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Assemble engine.

Check function of Digital Engine Electronics; if necessary, readjust uniform mixture distribution.