Disconnecting fuel pressure gauge

Fig 1: Identifying Fuel Pressure Gauge And Components

GLL100888

Courtesy of VOLVO CARS OF NORTH AMERICA.

Ignition off.
Start draining unit.
Turn pressure gauge cock to mid-position.
Lock adapter (valve closed as in pop-out graphic number 1 in the illustration).
Disconnect adapter from valve.
Stop draining unit.
Reinstall equipment.

CAUTION:

Remember to reinstall valve safety cap.