11 12 600 Reaming a valve guide (M52 / S52 / M52TU / M54 / M56)
WARNING: This page is about a different car, the 2005 BMW Z4, 2004 BMW Z4, and 2003 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.
Special tools required:
- 00 4 210
(valve removed)
NOTE:
In event of excessive clearance between valve stem and valve guide:
Valve guide is reamed and a repair valve with a larger stem diameter is installed.
Valve guide is reamed and a repair valve with a larger stem diameter is installed.
Assemble reaming tool and guide taper (1) from special tool kit 00 4 210 depending on stem diameter. Press guide taper (1) onto valve seat. Starting from combustion chamber side, ream valve guide dry. Rotate reaming tool once in downwards direction.
NOTE:
Remachine valve seat after reaming.