11 34 055 Replacing all valve springs (B36A/B38A)

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Special tools required:

Necessary preliminary tasks:

Remove CYLINDER HEAD .
Remove ALL ROCKER ARMS

Removal:

Mount and bolt cylinder head on special tools 11 9 001 and 00 2 300 .

Fig 1: Mounting Cylinder Head On Special Tools (11 9 001 And 00 2 300)

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Prepare special tools 11 9 006 , 11 9 007 and 11 9 008 as illustrated.

Fig 2: Special Tools (11 9 006, 11 9 007 And 11 9 008)

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NOTE: Special tools 11 9 008 must be positioned accordingly in the next operation.

Fig 3: Special Tools (11 9 008)

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Turn special tool 11 9 006 over and insert as illustrated.

Lock special tool 11 9 005 in direction of arrow.

Fig 4: Locking Special Tool (11 9 005)

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Lock special tool 11 9 005 in direction of arrow.

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

Fig 5: Rotating Cylinder Head Using Special Tool (11 9 000)

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Align special tool 11 9 009 in direction of valve axis. Select corresponding groove with special tool 11 9 017 .

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

Valve spring can be held in pressed-down position with special tool 11 9 011 .

NOTE: Illustration shows B48A.

Fig 6: Pressing Down Valve Spring On Upper Spring Cup With Special Tools (11 9 009 And 11 9 017)

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Keep valve spring pressed down with special tool 11 9 017 .

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

Relieve load on valve spring. Remove valve spring and spring cup.

Set down valve spring, spring cup and valve keys in special tool 11 4 480 in an orderly manner.

Fig 7: Removing Valve Keys From Valve

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Installation:

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 (1) are marked in color (2).

Color for intake valves and exhaust valves:

Blue

Fig 8: Blue Marking On Valve Springs

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Install the valve spring so that the larger diameter (Y) points to the bottom spring cup.

If necessary, replace VALVE STEM SEALS .

Installation sequence:

Valve
Valve stem seal
Valve spring
Top spring cup
Valve keys

Fig 9: Installation Sequence Of Valve, Valve Stem Seal, Valve Spring, Top Spring Cup, And Valve Keys

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Align special tool 11 9 009 in direction of valve axis. Select corresponding groove with special tool 11 9 017 .

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

Valve spring can be held in pressed-down position with special tool 11 9 011 .

NOTE: Illustration shows B48A.

Fig 10: Pressing Down Valve Spring On Upper Spring Cup With Special Tools (11 9 009 And 11 9 017)

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Keep valve spring pressed down with special tool 11 9 017 .

Use a magnet to install valve keys (1) on valve (2).

Relieve load on valve spring.

Fig 11: Removing Valve Keys From Valve

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Unlock special tool 11 9 005 .

Remove special tool 11 9 006 .

Fig 12: Removing Special Tool (11 9 006)

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Remove cylinder head from special tools 11 9 001 and 00 2 300 .

Fig 13: Mounting Cylinder Head On Special Tools (11 9 001 And 00 2 300)

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