RV-4 fuel level sending unit replacement question.

[61Flyguy]

I need to replace my RV-4 fuel level sending unit (float type). Is it necessary to remove the entire tank or can this job be done through the wing root once the fairing is removed?

Thanks in advance.

[dougweil]

I have done this project on my previous RV-4 and found it much easier just to remove the entire tank. There is very little room to work with in the wing root area as you are well aware.