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

WARNING: This page does not describe the selected car, but rather 16 other vehicles, including the 2008 BMW Z4, 2007 BMW Z4, 2007 BMW 530xi, 2007 BMW 530i, and 2007 BMW 525xi. 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 4 343

Necessary preliminary tasks:

Remove Cylinder Head.
Disassemble cylinder head.

Set up special tool 11 4 341 with existing cylinder head bolts.

Installation:

1 cyl is marked.

Fig 1: Identifying Special Tool (11 4 341)

Courtesy of BMW OF NORTH AMERICA, INC.

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

Sealing flange must rest flat.

Fit special tool 11 4 343.

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

Heat cylinder head to 60°.

Visually inspect for formation of bubbles.

Fig 2: Identifying Special Tool (11 4 342), (11 4 343), Knurled Screw And Valve

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.