Hey all I need to rebuild 2 outdoor frost free faucets. They are just starting to leak a bit and make a squealing noise when turning water on or off that resonates thru the whole house! Problem is that I dont know what the part/parts are called. I basically want to just replace the ‘guts’ of the faucet, not the whole thing. Replacing the whole thing is dang near impossible where its located without a bunch of demo work. Heres the faucet in question: