Hi Folks
So, I'm repairing the 3 point lift hydraulics in a Massey 202. My question is basic enough that the model doesn't matter (or so I think anyway). Skipping all the painful details and getting to the point. I bought a new cylinder, piston, and rings. When hooked up, hyd fluid leaks from the cylinder. When on the bench and I put air to it, it leaks and air escapes from the cylinder (blowing past the rings). So, I'm 99.9% sure this shouldn't be happening. I could not find anything online about testing the system with air and whether or not the rings would do a good job buffering the air, but I assume so since engine cylinders have rings that do the same.
So, I guess my question is, are my assumptions correct? Any suggestions on what to troubleshoot first?
I was going to mic the components, but I don't really trust my accuracy. The rings were so tight I decided not to bother (ring gap) and groove play, perhaps I'm being too lazy or using too cheap of tools. I mic'd the cylinder and piston and both were pretty much right at 3" as advertised. My measurements showed the piston to be wider, which is why I don't trust my tools nor the operator!
Any help is appreciated. I also have a note into the supplier.
Thanks
Matt
So, I'm repairing the 3 point lift hydraulics in a Massey 202. My question is basic enough that the model doesn't matter (or so I think anyway). Skipping all the painful details and getting to the point. I bought a new cylinder, piston, and rings. When hooked up, hyd fluid leaks from the cylinder. When on the bench and I put air to it, it leaks and air escapes from the cylinder (blowing past the rings). So, I'm 99.9% sure this shouldn't be happening. I could not find anything online about testing the system with air and whether or not the rings would do a good job buffering the air, but I assume so since engine cylinders have rings that do the same.
So, I guess my question is, are my assumptions correct? Any suggestions on what to troubleshoot first?
I was going to mic the components, but I don't really trust my accuracy. The rings were so tight I decided not to bother (ring gap) and groove play, perhaps I'm being too lazy or using too cheap of tools. I mic'd the cylinder and piston and both were pretty much right at 3" as advertised. My measurements showed the piston to be wider, which is why I don't trust my tools nor the operator!
Any help is appreciated. I also have a note into the supplier.
Thanks
Matt