11 34 552 Removing and installing or replacing all valves - cylinder head removed (S54)

WARNING: This page is about a different car, the 2002 BMW M Roadster, 2002 BMW M Coupe, 2001 BMW M Roadster, and 2001 BMW M Coupe. However, it is still accessible from the selected car via links, so may be relevant.

Preliminary tasks are described in Disassembling and assembling cylinder head. Refer to 11 12 503 Disassembling and assembling cylinder head - cylinder head removed (S54) .

Replace valve stem seals. Refer to 11 34 560 Replacing all valve stem seals - cylinder head removed (S50 / S54) .

Remove valves from cylinder head.

If necessary, check valve guide for wear. Refer to 11 12 595 Checking a valve guide for wear - valve removed (S50 / S54) .

If necessary, remachine valve seat. Refer to 11 12 527 Remachining a valve seat - cylinder head disassembled (S50 / S54) .

CAUTION: Incorrect installation possible. Incorrect installation will result in valve spring breakage.

The valve spring coils are narrower at the lower ends.

The color coding (3) is normally located at the lower end of the valve springs.

Fig 1: Identifying Valve Springs

Courtesy of BMW OF NORTH AMERICA, INC.

Only the position of the narrower coil is the decisive factor in correct installation of the valve springs (1 and 2).

Install valve springs (1 and 2) in such a way that lower coil points to spring plate at bottom.

Arrangement:

Fig 2: Identifying Components Of Valve

Courtesy of BMW OF NORTH AMERICA, INC.