Transferring the balls to the new valve housing

Fig 1: Locating Balls In Valve Housing

Courtesy of VOLVO CARS OF NORTH AMERICA.

Use Volvo Genuine parts petroleum jelly P/N 116 11 51-4 so that the balls remain in the relevant ducts during the installation of the valve housing.

Transferring 

Balls 373 (2 x). Apply petroleum jelly to each duct. Install the balls (the petroleum jelly should cover the balls).

Balls 372 (4 x). Apply petroleum jelly to each duct. Install the balls.