Cylinder Head Assembly: Testing and Inspection

11 12 729 - Checking cylinder head for water leaks (N62/N62TU)





Special tools required:
- 11 9 430 11 9 430 Fixture
- 11 9 431 11 9 430 Fixture
- 11 9 432 11 9 430 Fixture
- 11 9 433 11 9 430 Fixture





(cylinder head dismantled)

Prepare special tool kit 11 9 430 11 9 430 Fixture.

Note:
Special tool kit 11 9 430 11 9 430 Fixture can be used for cylinder bank 1 to 4 and cylinder bank 5 to 8.





Place special tool 11 9 431 11 9 430 Fixture on cylinder head sealing surface, insert screws (special tool 11 9 433 11 9 430 Fixture) and tighten down.

Seal coolant aperture with special tool 11 9 432 11 9 430 Fixture and tighten down.





Connect compressed air hose (1) to pressure gauge.

Immerse cylinder head in a water bath. Inspection pressure 4.5 bar.

Check cylinder head for escaping air (cracks).

Note:
If necessary, add cleaning agent to water bath.