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Category: Gaskets and Seals X

All Products 21829
Gaskets and Seals 312
Carburetor 196
Fuel Injection 53
Fuel Pumps 20
Miscellaneous 1
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Pneumatic System 6
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AERO-Classics
Abbey Color Inc
Acorn Welding
Acorn Welding Ltd.
Aero Twin, Inc.
AeroLEDs
AeroShell
Aerospace Logic, Inc.
Aerospace Welding Minneapolis, Inc. (AWI)
Aircraft Development
Aircraft Specialty Services, Inc
Airfasco
Airforms Inc.
Airframes Alaska, LLC
Alaska Gear Company
Alcor, Inc.
Alternative Spare Parts (Ian Aviation)
Ancra International
Approach Aviation
Aurora Bearing
AvLabs
Aviation Products System, Inc.
Bob Baines
CJ Aviation
Carr Lane Manufacturing Co.
Central Texas Aircraft Parts
Cessna Aircraft Company
Champion Aerospace
Cirrus Aircraft
Continental Motors, Inc.
Curtis Superior Valve Co., Inc.
EarthX Batteries
EnerSys Energy Products Inc.
F. Atlee Dodge Aircraft Services
Forensics
Gallagher Aviation
Hardware
Hartzell Engine Technologies
Hutchinson Aerospace & Industry Inc
Instrument Tech Corp.
J & M Aircraft Supply
Kano Laboratories
Kinedyne Corporation
Knots 2U
Knots 2U Ltd
LearChem
MT-Propeller
Marsh Brothers Aviation
Marvel Schebler Aircraft Carburetors
McFarlane Aviation
Middle Fork Mods
Mr. Funnel
Oasis Scientific, Inc.
PMA Products
Parker Hannifin Corp. Aircraft Wheel & Brake (Cleveland)
Permatex
Phillips 66
Piper Aircraft, Inc.
Plane Power
PowerUp Ignition Systems
Precision Airmotive
Premier Aerospace Services & Technology Inc
Quality Aircraft Accessories
Rapco, Inc.
Rope Chocks
Royal Air Products
SAF-AIR Products, Inc.
Sensorcon
Stene Aviation, Inc.
Steve's Aircraft
Stewart Warner
Superflite
Superior Air Parts Inc.
Surefly Electronic Ignition
Tempest (Aero Accessories, Inc.)
Texas Aeroplastics
The Timken Company
Tools, Non-McFarlane
Univair Aircraft Corp
Vantage Plane Plastics
Wall Colmonoy Corporation
Webco Aircraft Co
Whelen Aerospace Technologies

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Gaskets and Seals

FAQs for "Gaskets and Seals"

Frequently Asked Questions

I have just installed my new Fuel Pump and my engine will not start. Why?

A common cause for this problem is fuel starvation due to improper installation of the fuel pump. Make sure that the fuel lines are not crossed; that is, the inlet line should be connected to the inlet side of the pump (marked “IN” on the top of the port) and the outlet line should be attached to the fuel pump outlet port. Fuel should be present at the inlet side of the fuel pump.

Improper installation of the fuel pump may result in a misalignment of the operating lever with the operating plunger in the accessory case. If so, there will be no movement of the lever and no pumping motion to provide fuel flow. If misalignment is found upon removal of the pump, the lever is probably damaged or broken. If misalignment of the operating lever has occurred, it will require inspection and repair by a qualified technician.

Is there a mandatory replacement time for diaphragm fuel pumps?

Diaphragm fuel pumps should be replaced or overhauled:

At engine TBO or after ten years in service, whichever occurs first. Replace on condition if leaks develop or performance drops for example.
Refer to Lycoming Mandatory Service Bulletin 240W for information regarding engine TBO.

What is causing my fuel pressure to fall below the “green arc”?

The most common reasons for low fuel flow/pressure are the following:

A worn or broken O-ring on the inlet side fuel fitting can cause an inlet suction leak. An inlet air leak will result in low Fuel Pump output pressure.
A weak operating spring in the Fuel Pump diaphragm assembly
A worn fuel pressure gauge
A clogged fuel vent or fuel cap
A constriction in a fuel line either externally (a kinked hose), or internally (due to a collapsed hose lining)
Wrong fuel pump for the installation

What is causing my fuel pressure to fluctuate?

Fluctuating fuel pressure can be the result of the following:

A worn fuel pressure gauge
A worn or broken O-ring on the inlet side fuel fitting
An obstruction in the induction system (air intake)
A clogged or dirty fuel strainer
Foreign material inside the fuel body (such as fuel cell sealant, thread sealant, or a drill shaving)

What is causing the fuel (or oil) to leak from my Fuel Pump drain line?

Leaking fuel or oil through the fuel pump overboard drain line indicates the rotary seal is running dry or contamination happened in the field. Your fuel pump should be replaced before further flight.

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