freightliner Workshop Repair Guides

Freightliner Workshop Service and Repair Manuals

Fuel Filter > < Fuel Filler Cap|Description
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Fuel Filler Cap: Description and Operation
Operation

OPERATION

The Fuel Filler Cap incorporates a two-way relief valve that is closed to atmosphere during normal operating conditions. The relief valve is calibrated to
open when a predetermined pressure or vacuum occurs in the fuel tank. When the pressure or vacuum is relieved, the valve returns to the normally closed
position.

WARNING: REMOVE THE FUEL FILLER CAP IN ORDER TO RELEASE FUEL TANK PRESSURE BEFORE DISCONNECTING ANY
FUEL SYSTEM COMPONENT.

Fuel Filter > < Fuel Filler Cap|Description