Blow the test output plug clean with compressed air. Remove it. Install the connector nipple

Fig 1: Identifying Connecting Hose And Manometer 999 2531

Courtesy of VOLVO CARS OF NORTH AMERICA.

Install nipple 9995728 .

NOTE:

Conical screw threads. Do not over tighten.

Connect the hose and manometer 9992531 to the nipple. Position the manometer so that it is clearly visible from the driver's seat.