11 34 715 Replacing all valve springs (M52 / S52 / M52TU / M54 / M56)

Special tools required:

11 0 342
11 0 345
11 1 045
11 1 065
11 1 441
11 3 030
11 3 250

(cylinder head removed)

Preliminary tasks are described in Disassembling and assembling cylinder head.

Brace bucket tappets with special tool 11 3 250.

Lift out bearing strip with bucket tappet.

Installation:

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

Fig 1: Lifting Out Bearing Strip With Bucket Tappet

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

Fig 2: Arranging Bucket Tappets By Cylinder

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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: Inserting Special Tool

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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: Identifying Align Special Tool

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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 & Plate Spring

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Arrangement:

Valve
Valve-stem seal
Lower plate spring
Valve spring
Top plate spring
Valve tapers

Fig 6: Identifying Lower & Top Plate Spring

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