Cylinder Head Assembly: Testing and Inspection

11 12 729 - Checking cylinder head for water leaks (N52)





Special tools required:
- 11 4 341 11 4 340 Pressure-Testing Fixture
- 11 4 342 11 4 340 Pressure-Testing Fixture
- 11 4 343 11 4 340 Pressure-Testing Fixture





Necessary preliminary tasks:
- Remove cylinder head Removal and Replacement.
- Disassemble cylinder head.





Set up special tool 11 4 341 11 4 340 Pressure-Testing Fixture with existing cylinder head bolts.

Installation:
1 cyl is marked.





Fit special tool 11 4 342 11 4 340 Pressure-Testing Fixture, insert knurled screw (1) in direction of arrow.
Sealing flange must rest flat.
Fit special tool 11 4 343 11 4 340 Pressure-Testing Fixture.

Note:
Compressed air at valve (2) must not exceed 3 bar.
Heat cylinder head to 60°.
Visually inspect for formation of bubbles.





Assemble engine.