disconnecting wires to sending unit

[Danhattan]

I am new to the forum and new to Zs. Please be gentle. My 1975 Z very likely has a rusty fuel tank and filter. Tried dropping the tank yesterday (with a broken right arm, in a cast, in the cold) so I could send it out for restoration.  My nephew and I were unsuccessful in disconnecting the wires from the tank/sending unit.  Is there a trick to disconnecting the female plastic part (to the sending unit) from the male rubber part (to the power supply)?  Does it pull apart with force or does it require an intermediate step?

[wheee!]

Pulls straight out...



Might be corroded together.

[Danhattan]

PB Blaster? 

[wheee!]

That’s a good start.

When the unit is out, soak the entire thing in CLR

[Danhattan]

success.  thank you for the help.  lots of dislodged rust inside the tank, but the auto shop says the tank is in better shape than the average Z tank they see.  should have it back in a week.