Removing fuel sending unit from the tank?

[_Russ_]

Sorry if it's a stupid question, but how do I undo this thing a remove the sender unit? Do I simply use something against the tabs of the inner ring, to turn it for the cogs align with the gaps? Any special tool I should look at, or should I use a flat-head screwdriver and hammer it around?



It's working fine, but since the tank is out I though it prudent to check. Make sure nothing's loose/broken.



Also, this threaded stud for the lead wire/boot. The piece that was on it I simply pulled off. Did I bugger it? Was it suppose to screw off? I was on my back and couldn't see much. Car wasn't even jacked up. Had limited room and no idea what I was really doing. I just pulled it straight off without thinking.





 

[GranCuda1970]

There is a tool for removal and installation, but I managed to get mine in and out with flathead screwdrivers. Just tap the ring into the recesses aligned and it will pull out. More of a pain to get back in.

[GranCuda1970]

That stud is for your plug that comes thru the trunk pan. should be Ok.

[67vertman]

Russ,

Use a large flat screwdriver and a rubber mallet.  Place the screwdriver on one of the tabs on the outer ring of the cap on the sending unit.  Tap it clockwise (if memory serves me right) it should move slightly, about an inch, and then you should be able to remove the ring and sending unit. Sometimes the unit is stuck to the tank, so you may need to pry it off. 
Check the sending units float (for leaks) and filter screen on the pick-up end of the unit.

['Cuda Hunter]

So, still on the same subject line. Is there a place to buy these sending units new?

I remember having a hard time finding one for my last cuda.

[Jamiez]

Yes they are repopped.  I seem to remember that it's better to use one of the old parts (locking ring I think) than to use the repop one because the fitment is better

['Cuda Hunter]

fitment issues huh.  How surprising. 
Any idea who repops it?

One of the metal companies?

[Jamiez]

Rock auto shows:
Spectra Pro http://www.rockauto.com/catalog/moreinfo.php?pk=872367&cc=1078703

Dave @ Roseville can probably give a much more knowledgable break down of who makes the best, although I've heard Spectra fuel tanks are among the best for E bodies

[brads70]

So, still on the same subject line. Is there a place to buy these sending units new?

I remember having a hard time finding one for my last cuda.

I got mine from Dave at Roseville. I used my old locking ring. ( Challenger though , not Cuda?)

[Barracudadan]

I have a Spectra tank on my Barracuda no problems at all, however I did keep my original sending unit and lock ring. Spectra`s ring is noticibly thinner than original and can cause a leak. Someone does sell a thicker replacment lock ring but I can`t recall who. I`ll try searching for it and post the supplier if I find it.

[Strawdawg]

Using a brass drift rather than a screwdriver will eliminate the slight chance of a spark causing a much bigger boom

[jimynick]

Using a brass drift rather than a screwdriver will eliminate the slight chance of a spark causing a much bigger boom
   There's a man who's not at his first rodeo! Also, watch the stop tabs and don't hammer the bejeezus out of the ring. The senders electrical connection is just a push-on, not threaded or nutted. A new gasket wouldn't come amiss, either.

[footin70rt]

AMD has sending units also, no personal experience but they are listed in the catalog.

[hooD]

I have always used a flat head screw driver and hammer to remove the lock ring.  I spray some wd-40 on the ring to lube it up a bit.  There is also a rubber washer that is under the ring.  Mine is still leak free after 40 years. 

The plug is for your fuel gauge....I put a dab of dielectric grease on the threaded screw when finished to ensure a good connection and to make removal easy in the future.  The plug presses on to the stud...no turning required.

Check your brass float while the sending unit is out.  Shake it......make sure it doesn't have any fuel in it.  A leaking float WILL give you false readings of fuel levels on your guage.

[MEK-Dangerfield]

Check your brass float while the sending unit is out.  Shake it......make sure it doesn't have any fuel in it.  A leaking float WILL give you false readings of fuel levels on your guage.

It's funny you bring that up. My after-market sending unit has a plastic float. I've had it for 8 years, but with them adding ethanol to our gas now, I wonder how long until it gets eaten through.