bmw Workshop Repair Guides

BMW Workshop Service and Repair Manuals

2 RA Replacing All Valve Stem Seals - Cylinder Head Removed (N45T) > < 2 RA Removing And Installing_replacing Hydraulic Valve Clearance Compensating Element
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Removing and installing or replacing all
valves - cylinder head removed (N45T)

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.

Colour marking (1) is normally on lower end of valve springs.

Only the diameter is decisive for the correct installation of the
valve springs.

Install valve springs 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 (N45T)

BMW AG - TIS

19.01.2013  01:14

Issue status (12/2007) Valid only until next DVD is issued

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2 RA Replacing All Valve Stem Seals - Cylinder Head Removed (N45T) > < 2 RA Removing And Installing_replacing Hydraulic Valve Clearance Compensating Element