Is that correct? There are actually two tabs and one hole? If so, the one with the + would be the plus terminal, the other the negative terminal. It has been eons since I worked with those kind of cans so I am not sure but the negative terminal could also be the can.

If these aren't a component for component replacement, I strongly recommend you buy a new capacitor from a supply house. Old electrolytics can dry out. You just might be replacing bad for bad.

It's correct! I've connected the the "+" of the circuit on the terminal and the ground to the capacitor case (basically on the screw it has on it) and it works fine!!! Thank you guys for your replies!

 

One more time, capacitors do not have "outputs". They can have leads or terminals but they do not have outputs. Based on what you say if it is just a single can my guess is the odd pin is just a can ground and the remaining two pins are the 50 uF terminals. Since it is an AC capacitor there is no polarity.

Additionally as an AC capacitor it is not the type of capacitor used as a filter cap. It looks to be a motor starter capacitor commonly found in for example air conditioner compressors.

Ron

Not sure where you get that - AC caps are frequently used as mains in filters.

On things like washing machines you might find a composite component that also includes a common mode inductor.