11 12 729 Checking cylinder head for water leaks (N52K)

WARNING: This page is about a different variant/trim than selected.

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:

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

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

Fig 1: Identifying Special Tool (11 4 341) On Cylinder

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

Installation:

Cylinder no. 1 is marked.

Fig 2: Identifying Special Tool (11 4 341) On Cylinder

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

Sealing flange must rest flat.

Fig 3: Identifying Special Tool (11 4 342) With Mounting Bolts

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

NOTE: Compressed air at valve max. 3 bar .

Heat cylinder head to 60 °.

Check for bubble formation in a water bath.

Fig 4: Identifying Special Tool (11 4 344) With Mounting Bolts

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.