Chrysler: Fuel tank removal

OK this is the problem "fuel sending unit not working properly, I can
fill up the tank and it will show full, then when the fuel level is
about 3/4 it start to go down to empty, even do I know I have between
1/2 to 3/4 fuel in the tank, and it will stay on empty with the low
fuel warning lite on, untill i put about 5 gallons in then it goes
back to full. I am going to change the fuel sending unit. I was going
to change the sending unit that I can get it at the dealer for $75,
but decided to chanche the whole unit, "9 year old caravan with the
same pump, you never know when it will give out". I know I have to
drop the tank to replace the unit, my question is any surprices that I
should be aware beside fuel safety isues?. I have the dealers service
manual that I will be using but like always they don't tell you
everything.


jrvwbuggin

Ps is a 94 dogde Caravan with a 3.3

Ok, I will like to thank everyone that help with some information. I
finally got the part yesterday, and dropped the tank, My original
plans where to replace just the sending unit, because the Parts store
wanted $280.00 for the complete pump/sending unit, the dealer $350.00.
I could buy the sending unit for $70.00, but after 9 years of usage
on the existing pump I opted to replace the complete unit, (Would hate
to drop the tank again in a year or so, for a new pump). I checked the
AAFES web site and found the complete unit for $188.00, no tax, since
is for military. According to the book I was to drain the tank
completely, remove all 4 screws at the filler point disconnect all
hoses, and electrical connectors, the straps, and drop the tank.
Insted I only removed the screws, the straps, and the electrical and
fuel hoses, and lowered the tank just enough to get to the pump. I had
plenty of room to work with it did not had to drain the fuel tank, of
course the 3 ton jack worked very well. The removal took me about 1
hour, thank to the rusted strap bolts, (had to removed them with a
regular ratchet little by little. But the installation was under 20
minutes, with my air compressor and air ratchet set. The best thing I
ever invested my money on. Every is working like new.

Jose