843 leak at hydraulic tank inlets.

[zgrant231]

My bobcat 843, #503762224 has a hydraulic tank leak at both supply and return fittings at the tanks sealing surface. Tank is emptied and I see the outer 1.25" nut is a o ring sealed fitting witch is backed off.
My issue is the large 2" nut just spins to infinity without snuging up against the hydraulic tank. What am I missing here? I'm sure some one has dealt with this.

 

[brdgbldr]

I'm not familiar with your particular machine, but I have seen tank fittings that screw directly into the plastic of the tank since they are little to no pressure. This means the tank "threads" strip easily. Thus the spinning without getting tighter.

Looking at the parts catalog, both of the fittings that go into the tank also have an O-ring.

 

[zgrant231]

Thanks brdgbldr! That gave me the confidence to tare into it. You were right, plastic threads were stripped. There was enough to snug up so I replaced the o rings and reinstalled with RTV on the treads, let sit over night and test ran it today with no leaks. Thanks again!