11 12 729 Check cylinder head for water leaks (N54)

WARNING: This page is about a different car, the 2010 BMW X6, 2009 BMW X6, and 2008 BMW X6. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 4 341
11 4 342
11 4 344
11 4 345

See ENGINE - SPECIAL TOOLS (N54, N63) .

IMPORTANT: Pressure-test cylinder head to max. 3 bar.
Heat cylinder head to 60°.
Check for bubble formation in a water bath.

Necessary preliminary tasks:

Remove cylinder head .
Disassemble cylinder head .

NOTE: Observe mounting of special tool 11 4 341 on 1 cylinder.

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

Fig 1: Identifying Special Tool 11 4 341 Securing Bolts 11 4 345 Tightening Torque 25 Nm

Courtesy of BMW OF NORTH AMERICA, INC.

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

Installation:

1 cyl is marked.

Fig 2: Identifying Special Tool 11 4 341

Courtesy of BMW OF NORTH AMERICA, INC.

Fit special tool 11 4 342 with bolts (1), insert knurled screw in direction of arrow.

Sealing flange must rest flat.

Fig 3: Fitting Special Tool 11 4 342 With Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

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

NOTE: Compressed air at valve (2) must not exceed 3 bar.

Heat cylinder head to 60°.

Check for bubble formation in a water bath.

Fig 4: Identifying Special Tool 11 4 344 And Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.