Cylinder Head Assembly: Testing and Inspection

11 12 729 Checking cylinder head for water leaks (N52T)

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.





Necessary preliminary work:
^ Remove cylinder head.
^ Disassemble cylinder head





Note:
Check special tool 11 4 341 is correctly attached to cylinder.

Secure special tool 11 4 341 using bolts 11 4 345 tightened to 25 Nm.





Extend special tool 11 4 341 with special tool 11 4 345.

Installation:
Cylinder no. 1 is marked.





Fit special tool 11 4 342 with screws (1).

Screw in knurled screw in direction of arrow.

Sealing flange must rest flat.





Secure special tool 11 4 344 with bolts (1).

Note:
Compressed air at valve max. 3 bar.

Heat cylinder head to 60 °.

Check for bubble formation in a water bath.





Assemble engine.