Draining the CNG High-Pressure Fuel Filter
wv mm 47.03.000
Warning: Compressed natural gas is highly
flammable. See the safety precautions listed, see CNG General Information of the Walk-In
Van Chassis Operator's Manual or of the Walk-In
Van Chassis Workshop Manual, or take the vehicle to an authorized
Freightliner dealer. Failure to observe these precautions could lead
to the ignition of the natural gas, which could cause severe bodily
harm, or death, or property damage.
Shut off the fuel supply at the fuel tanks. Vent the system.
Drain the fuel filters, which are mounted on the left-hand frame rail of the vehicle near the fuel regulator, by removing the drain nut located at the bottom of the housing of each filter.
Perform this maintenance procedure as indicated in the maintenance interval chart in this manual.
Note: