Cylinder Head Assembly: Testing and Inspection

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





Special tools required:
^ 11 4 341
^ 11 4 342
^ 11 4 344
^ 11 4 345





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.