Topic: 1940 Gas Tank removal


1936TWC    -- 07-01-2010 @ 10:13 AM
  I would appreciate any insights on the correct procedure to remove a gas tank from a 1940 Ford Coupe.
What is the criteria on when a tank should be replaced?

Thanks



supereal    -- 07-01-2010 @ 11:26 AM
  The job is straight forward. Drain the tank, disconnect the fuel line and the filler, then unbolt the flanges, being careful to note how the bolts and springs are assembled. Usually, the cage nuts holding the tank bolts are rusted, and may break the cages, which complicates the job as the nuts are difficult to get at to hold. The tank will clean the frame with some juggling around. The new tank goes in the same way the old one came out. As to when to replace a tank, certainly when it shows signs of internal rusting, which is often shown by leaking pinholes. All old tanks have a collection of rust, dirt, and metal particles from the filling station pumps. We don't waste time trying to clean and seal old tanks, as it is seldom a permanent solution. If you are not a purist, there are very good plastic tanks out there that will never rust.


TomO    -- 07-01-2010 @ 1:37 PM
  You most likely will be unable to remove the drain plug. Most of them rust in place in a couple of years. Drive the car until you have less than 1/4 tank of gas. Jack up the drivers side of the car so that the gas will not come out of the fuel line fitting and then remove the fuel line. Now you can connect a fuel line with a piece of rubber hose into the tank fuel line fitting.

Clamp the hose with locking pliers and let the car down. Now you can direct the rubber line into a plastic gas can or cans as needed. Clean up any spilled gas before trying to remove the tank and plug the fuel line outlet, to keep any residual gas in the tank.

There is an access panel in the trunk floor to remove the gas gauge sending unit wire.

Tom


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