11 34 715 Replacing all valve springs (N47 D20 O1)

Special tools required: 

• 11 4 480
• 11 8 840
• 11 9 000
• 11 9 001
• 11 9 005
• 11 9 006
• 11 9 008
• 11 9 009
• 11 9 011

Necessary preliminary work: 

• Remove CYLINDER HEAD .
• Place cylinder head on special tool 11 9 001 .

Position special tool 11 9 008 with straight surface on the cylinder head (see Fig 1).

Insert special tool 11 9 006 and lock with special tool 11 9 005 in direction of arrow.

Lock special tool 11 9 005 in direction of arrow.

Rotate cylinder head, using special tool 11 9 000 , 180° into installation position.

Align special tool 11 9 009 in direction of valve axis. Select corresponding groove with special tool 11 8 840 .

Press down valve spring on upper spring cup with special tool 11 9 009 .

Hook in with special tool 11 9 011 .

Use a magnet to remove valve keys (1) from valve (2).

Remove valve spring and spring cup.

Place down valve springs and valve keys on special tool 11 4 480 in an orderly manner.

Check color code of valve spring (1).

The color (2) on the valve spring is important for allocation purposes.

Possible color sets:

• Yellow - orange
• Green - orange
• Blue - orange

The installation position of the valve spring can be freely selected.

Installation sequence:

1. Valve
2. Valve stem seal
3. Valve spring
4. Top spring cup
5. Valve keys
   Fig 7: Identifying Valve Components

   Courtesy of BMW OF NORTH AMERICA, INC.

If necessary, replace VALVE STEM SEALS .

Assemble engine.