11 34 552 Removing and installing or replacing all valves (M52 / S52 / M52TU / M54 / M56)

(cylinder head removed)

Preliminary tasks are described in DISASSEMBLING AND ASSEMBLING CYLINDER HEAD . Replace valve stem seals.

Remove valves from cylinder head.

If necessary, check valve guide for wear.

If necessary, ream valve guide.

If necessary, remachine valve seat.

Arrangement:

1. Valve
2. Valve-stem seal
3. Lower plate spring
4. Valve spring
5. Top plate spring
6. Valve tapers
   Fig 1: Identifying Valve, Valve-Stem Seal And Valve Spring

   Courtesy of BMW OF NORTH AMERICA, INC.