11 12 729 Checking cylinder head for water leaks (M62)

WARNING: This page is about a different car, the 2003 BMW X5, 2002 BMW X5, 2001 BMW X5, and 2000 BMW X5. However, it is still accessible from the selected car via links, so may be relevant.

(Cylinder head dismantled)

Seal coolant apertures with special tool kit 11 1 470.

NOTE: Special tool 11 1 473 for cylinder bank 1-4
Special tool 11 1 474 for cylinder bank 5-8

Fig 1: Sealing Coolant Apertures With Special Tool Kit 11 1 470

Courtesy of BMW OF NORTH AMERICA, INC.

Immerse cylinder head in a water bath. Inspection pressure 4.5 bar.

Check cylinder head for escaping air (cracks).

NOTE: If necessary, add cleaning agent to water bath.

Fig 2: Checking Cylinder Head For Cracks

Courtesy of BMW OF NORTH AMERICA, INC.