11 12 729 Checking cylinder head for watertightness (M57T2-SCR)

WARNING: This page is about a different car, the 2013 BMW X5, 2012 BMW X5, and 2011 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 6 400
11 6 401
11 6 402
11 6 403
11 6 404
11 6 406
11 6 407
11 6 408

Necessary preliminary tasks:

Remove CYLINDER HEAD .
Remove VALVE .

Close coolant apertures using set of special tools 11 6 400 consisting of special tools:

11 6 401 /11 6 402 /11 6 403 /11 6 404 /11 6 406 /11 6 407 /11 6 408 .

NOTE: Special tool 11 6 407 is a set.

Use old cylinder head bolts to attach special tools 11 6 401 /11 6 402 to the cylinder head.

Fig 1: Attaching Special Tools To Cylinder Head

Courtesy of BMW OF NORTH AMERICA, INC.

Immerse cylinder head in a water bath.

Test pressure: 4.5 bar.

Check cylinder head for escaping air (cracks).

NOTE: If necessary, decrease surface tension of water bath with washing-up liquid.

Fig 2: Checking Cylinder Head For Escaping Air

Courtesy of BMW OF NORTH AMERICA, INC.