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: Checking valve Guide For Wear

   Courtesy of BMW OF NORTH AMERICA, INC.