I’ve got this situation removing a faulty fuel tank valve (used to manually switch between two different tanks, located in the passenger compartment) on my truck. For some reason Ford designed it so the nuts that hold it to the mounting plate are both right up next to the valve, so there’s not enough room for a socket to slip by and fit on the nut. The wall of the socket hits the valve in other words. I’ve tried all my 7/16 " sockets, no go. And a combination wrench, still won’t fit.
I got to thinking they must have installed it somehow, so there must be a way to remove it. My theory, it was probably installed from the other side of the mounting plate, a screw or bolt head there. But that side’s been on the underside the truck for 43 years, what a rusty mess. Plus I’d probably have to remove or at least re-position the aux fuel tank to get needed access from the underside.
One idea that would work, I could just cut the nut and bolt clean off with a Dremmel tool. The problem w/that method is, the valve is leaking gas a little, that’s why I’m removing it, so there’s gasoline fumes. Sparks from the Dremmel tool and gasoline fumes? Seems problematic.
The only idea I can come up with is some kind of a thin wall socket. Anybody else ran into this kind of problem with some ideas?