11 12 729 Checking cylinder head on watertightness (N20)
WARNING: This page is about a different variant/trim than selected.
Special tools required:
IMPORTANT:
Pressure-test cylinder head to max. 3 bar.
Heat cylinder head to 60 °.
Check for bubble formation in a water bath.
Heat cylinder head to 60 °.
Check for bubble formation in a water bath.
NOTE:
The special tools 11 4 342 and 11 4 344 are included in the set of special tools 11 4 340
.
Necessary preliminary tasks:
- Remove CYLINDER HEAD .
- Disassemble cylinder head See 11 34 552 REMOVING AND INSTALLING/REPLACING ALL VALVES (N20) ; 11 31 025 REMOVING AND INSTALLING/REPLACING INTAKE CAMSHAFT (N20) and 11 31 028 Removing and installing/replacing exhaust camshaft (N20)
Fit special tool 11 4 342 with screws (1). Screw in knurled screw in direction of arrow.
Sealing flange must rest flat.
Fit special tool 2 212 824 .
Installation note:
Secure special tool with maximum 20 Nm.
Order number:83 30 2 212 824
Secure special tool 11 4 344 with screws (1).
NOTE:
Compressed air at valve max. 3 bar.
Heat cylinder head to 60 °.
Check for bubble formation in a water bath.
Assemble engine.