Replacing Valve Springs

Cylinder head removed, refer to 11 12 100 REMOVING AND INSTALLING/REPLACING CYLINDER HEAD (M52TU/M54/M56) .

Preliminary tasks are described in 11 12 503 DISASSEMBLING AND ASSEMBLING CYLINDER HEAD (M52/S52/M52TU/M54/M56) .

Brace bucket tappets with special tool 11 3 250.

Lift out bearing strip with bucket tappet.

Fig 1: Removing Bearing Strip With Bucket Tappet

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Installation: 

Only re-use used bucket tappets in the same tappet bore.

Arrange bucket tappets by cylinder and place on special tool 11 3 030 in correct order.

Fig 2: Place Bucket Tappets In Appropriate Order

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Insert special tool 11 1 441 from below in special tool 11 1 065 and secure with special tool 11 1 045.

Fig 3: Assemble Cylinder Head To Special Tools

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Align special tool 11 0 345 in direction of valve shaft and select appropriate groove in special tool 11 0 342.

Fig 4: Aligning Valve Spring Compressor As Illustrated

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Press down valve spring on spring cap, top, and remove valve keys.

Remove valve spring and plate spring.

Fig 5: Removing Valve Spring And Plate Spring

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Arrangement:

1. Valve
2. Valve-Stem Seal
3. Lower Plate Spring
4. Valve Spring
5. Top Plate Spring
6. Valve Tapers

Fig 6: Exploded View Of Valve Components

Courtesy of BMW OF NORTH AMERICA, INC.