3 Series E46 318Ci (N46) COUPE
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Removing and installing or replacing all
valves - cylinder head removed (N42/N40)
Necessary preliminary tasks:
•
Disassemble and assemble cylinder head.
•
Replace valve stem seals.
•
If necessary, check valve guide for wear.
•
If necessary, remachine valve seat.
Important!
Incorrect installation possible.
Incorrect installation will result in valve spring breakage.
Color coding (1) is normally at lower end of valve springs.
Only the diameter is decisive for the correct installation of the
valve springs.
Install valve spring so that larger diameter points to spring plate at
bottom.
Arrangement:
1)
Valve
2)
Valve stem seal with spring plate, bottom
3)
Valve spring
4)
Top plate spring
5)
Valve tapers
RA Removing and installing or replacing all valves - cylinder head removed (N42/N40
BMW AG - TIS
07.02.2013 14:48
Issue status (12/2007) Valid only until next DVD is issued
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