11 12 729 Check cylinder head for watertightness

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2010 BMW 535xi, 2010 BMW 535i, 2009 BMW 535xi, 2009 BMW 535i, and 2008 BMW 535xi. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

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: Mounting Of Special Tool (11 4 341) On 1 Cylinder

G05501605

Courtesy of BMW OF NORTH AMERICA, INC.

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

Installation note:

1 cyl is marked.

Fig 2: Identifying Special Tool (11 4 341)

G05501606

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

G05501607

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: Securing Special Tool (11 4 344) With Bolts

G05501608

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.