WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Tools 9995074 And 9992531
Courtesy of VOLVO CARS OF NORTH AMERICA.
Loosen the air filter.
Remove the test plug from the transmission. Install nipple
9995074
.
Connect the hose and manometer
9992531
to the nipple.