11 12 527 Remachining a valve seat - disassembling cylinder head (N52)
WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 2008 BMW Z4, 2007 BMW Z4, 2007 BMW 530xi, 2007 BMW 530i, and 2007 BMW 525xi. However, it is still accessible from the selected car via links, so may be relevant.
Special tools required:
- 00 5 380
- 11 9 001
Necessary preliminary tasks:
- Remove Cylinder Head.
- Remove Inlet Camshaft.
- Remove Exhaust Camshaft.
- Remove All Valves.
Place cylinder head on special tool 11 9 001.
Inset pilot from special tool 00 5 380 5 mm into a valve stem.
Select a suitable valve seat milling cutter (1).
Turn the milling cutter clockwise while applying low pressure. When the milling operation is finished, perform a further 2 turns without applying pressure to the cutter.
IMPORTANT:
If necessary, perform inner and outer seat corrections. See 11 12 CYLINDER HEAD WITH COVER N52 B25
Assemble engine.