The fuel selector valve works in unscreened fuel. Contaminated fuel can cause selector valve seal damage. When fueling from possibly contaminated fuel sources McFarlane recommends the use of a fuel filter, such as Mr. Funnel or another filtering device, to reduce trash in the fuel system.
The most common indication of external fuel valve leaks is the smell of avgas in the cabin. Most valves are located under the cabin floor. Fuel stain on the valve and drain plug or drain valve or on the belly of the aircraft can also indicate external leakage. External leaks are generally around the actuation valve stem. Internal leaks are detected when the fuel is turned off and fuel continues to drip during fuel system maintenance. Inner port leakage will allow fuel from one tank to leak into another fuel tank. This type leak is difficult to detect. Fuel transfer from one tank to another with the fuel valve selected to one tank only will indicate inner-port leakage. An extended period of time is needed to detect fuel transfer from one tank to another. Generally if internal leakage is detected when servicing the fuel system, it is likely there is also inner-port leakage.
We pressure test our repaired valves to a minimum of 5 psi using precision controlled air pressure and a calibrated low pressure indicator. This pressure is above the normal fuel pressure on the valve and below the limits of the springs in the valve. Each valve is submerged in Stoddard solvent while the air pressure is applied to the valve. The valves are then tested in each position to assure that there are no inter-port or external leaks. Leaks are detected by looking for air bubbles escaping from the valve.
Replacement Parts for Cessna Fuel Valves
McFarlane has a complete line of replacement parts for Cessna fuel valves including detent plates, springs, plastic seals, cams and much more. Most items are in stock and ready to ship!
Catalog Information and Eligibility
Replacement Parts for 150-152 Fuel Selector Valves and 185 Shut-Off Valves
Replacement Parts for McFarlane and Cessna 150-152 and 185 Valves
Replacement Parts for McFarlane 170, 172, 175 and 177 Series Fuel Valves
Replacement Parts for McFarlane 177, 182 and 185 Series Fuel Valves
FAA-PMA Approved Cessna 150 and 152 Fuel Indicator Plates
Replace your old plastic placard with our new material indicator plates!
P/N | Tank Capacity | |
MC0410218-10 | 22.5 gallons | |
MC0410218-11 | 21.5 gallons | |
MC0405050-1 | 24.5 gallons | |
MC0405050-2 | 27.5 gallons | |
MC0410218-12-279 | 35.0 gallons | |
MC0410218-13-279 | 37.5 gallons |
OUR PARTS ARE ENGINEERED TO LAST LONGER WHILE SOLVING KNOWN SAFETY ISSUES
OVER 40,000 PARTS IN STOCK WITH SAME DAY SHIPPING IF ORDERED BY 3PM
OUR TEAM PROVIDES THE OLD-FASHIONED CUSTOMER SERVICE THAT YOU EXPECT