Cylinder Head Assembly: Testing and Inspection

11 12 729 - Checking cylinder head for water leaks (S85)





Special tools required:
- 11 5 230 11 5 230 Pressure-Testing Fixture
- 11 5 231 11 5 230 Pressure-Testing Fixture
- 11 5 233 11 5 230 Pressure-Testing Fixture
- 11 5 235 11 5 230 Pressure-Testing Fixture
- 11 5 237 11 5 230 Pressure-Testing Fixture





Note:
Special tool 11 5 230 11 5 230 Pressure-Testing Fixture can be used for both cylinder heads.





Necessary preliminary tasks:
- Remove cylinder head.
- Disassemble cylinder head.





Secure special tool 11 5 231 11 5 230 Pressure-Testing Fixture with old cylinder head bolts.

Secure special tool 11 5 235 11 5 230 Pressure-Testing Fixture with special tool 11 5 237 11 5 230 Pressure-Testing Fixture.

Secure special tool 11 5 233 11 5 230 Pressure-Testing Fixture with special tool 11 5 237 11 5 230 Pressure-Testing Fixture.





Note:
Immerse cylinder head in a water bath.

Test pressure: 4.5 bar.

Check cylinder head for escaping air (cracks).

If necessary, add cleaning agent to water bath.

Assemble engine.