Control system housing

Fig 1: Identifying Control System Housing

Courtesy of VOLVO CARS OF NORTH AMERICA.

There are 4 more balls in the control system housing. The balls will fall out when the valve housing is removed. Collect the balls in a clean container (the balls will be reinstalled later). There are 2 balls which do not fall out when the valve housing is removed (these are in the control system, C1 and C2).