C3 Build Sheet Recovery
Removing the gas tank on a C3.
BY: Chris (Vettefinders.com)
Removing the fuel tank on a 1968-1982
will take approximately
1-2 hours. Be sure to wear safety goggles and disconnect
during this process. The first step is to drain the fuel
with a mechanical syphon. The next step is to block the
front wheels and
raise the rear end of the car. Be sure to place jack
stands under the
Next, unbolt the rear most muffler
hangers and loosen
the muffler clamps next to the half-shafts. This will
allow you to push
the mufflers out of the way of the spare tire holder and
the gas tank.
Remove the spare tire. Remove the spare tire holder by
removing the long
mounting bolts with a crescent wrench.
Next, you will need to prepare the gas
tank for lowering.
Remove the rubber gas filler neck. Remove the gas gauge
There are two wires for this on the right side of the
filler. You will
most likely be able to see the three lines that run to
the tank, after
you have removed the filler neck. The two gas lines are
located on the
right side, and the evaporator line is located on the
left. It will be
easier to remove these lines after lowering the gas
tank a few inches.
If you are going to re-use these lines (which you will,
unless you are
doing a frame-off restoration), you must be careful not
to bend or break
Next, remove the two nuts from the gas
tank straps that
hold the gas tank to the mounting cross member. Place a
floor jack below
the tank with a 2x4 across the jack. Jack the floor jack
up to rest against
the bottom of the tank. Before you proceed, REMEMBER,
you still have the
3 fuel lines attached, and you only want to lower the
tak a few inches!
Remove the bolts holding the tank in place and lower the
tank a few inches.
Now you should be able to get your hand in from the
filler area to pull
the fuel and evaporator lines loose from the tank. Also,
now is a good
time to check for your build sheet. If the sheet happens
to be glued to
the tank AND one of the straps, it will begin to tear if
you lower the
tank further. Check to see if you can locate the build
sheet. It is usually
located on the upper front side of the fuel tank on the
of the car.
If everything looks good, lower the
tank to the floor.
You tank is now separated from the car. If you have
managed to recover
your build sheet, be very careful to handle it gently.
Do not brush at
the paper, because this will only cause further
While your tank is out, you may wish to
restore the tank
using Eastwood's zinc silver tank tone on the outside
and gas tank sealer
inside. Also, inspect your anti-squeak pads to determine
if they need
to be replaced. You should also replace the rubber lines
to the steel fuel lines.
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