Rollover Valve: Description and Operation

Fig. 1 Rollover Valve Location (Diesel):

ROLLOVER VALVE
One rollover valve is used. The rollover valve is located on the top of the fuel tank module (Fig. 1). The valve may be serviced separately.

The valve is used only to vent the fuel tank to the atmosphere. A check valve is located within the rollover valve to prevent fuel flow from the fuel tank in the event of an accidental vehicle rollover.