11 12 600 Reaming a valve guide (M52 / S52 / M52TU / M54 / M56)
WARNING: This page is about a different variant/trim than selected.
NOTE:
For Special Tool identification, see SPECIAL TOOLS - X5 (3.0i) .
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.
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. Refer to 11 12 527 REMACHINING A VALVE SEAT (M52 / S52 / M52TU / M54 / M56) .