Checking and reinstalling the balls in the valve housing

Fig 1: Locating Balls In Valve Housing

Courtesy of VOLVO CARS OF NORTH AMERICA.

2 large balls (373).

4 smaller balls (372).

Inspect one ball at a time. Ensure that there is no dirt on the ball and that the surface are smooth and shiny.

Check the four balls in the control system housing. Follow the same procedure as above.