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- - fuel sending unit (https://67-72chevytrucks.com/vboard/showthread.php?t=424638)

JayE72

10-05-2010 09:07 PM

fuel sending unit

Hey guys!
I have a really quick question. I am re-assembling my sending unit on my 1972 Chevy SB Truck and I need to know if the rubber O-ring sits on the tank or if it sits between the sending unit and the lock nut? Thanks for your help...:chevy:

hayhauler71

10-05-2010 09:09 PM

Re: fuel sending unit

sits on the tank than sender than lock ring

JayE72

10-05-2010 11:43 PM

Re: fuel sending unit

Thanks Fuzzy!

cdowns

10-06-2010 06:59 AM

Re: fuel sending unit

hope you're using new oring to assure a good seal

JayE72

10-06-2010 11:11 AM

Re: fuel sending unit

No I had to use the old one. The one that was sent would not allow me to tighten the lock nut. I will try it again with the new one. What kind of problems will I have if I am not successful at installing the new o-ring?

cdowns

10-06-2010 11:19 AM

Re: fuel sending unit

old orings can cause leaks and gas smells due to improper sealing

try putting oring in boiling water b4 installing to soften it up

JayE72

10-10-2010 11:35 PM

Re: fuel sending unit

Thanks for your help cdowns. I finally got it to work with the boiling water. Thank you so much!

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