Can you HEAR the relief valve working when the loader stops lifting? There should be some sort of hissing or squealing coming from somewhere in the system that indicates the relief valve is opening.
If you don't hear any hissing or squealing, it's NOT the relief valve.
You need to pressure check the system.
The front-mounted hydraulic pump is generic and easy to replace. It is likely a Cessna or Eaton or another common brand pump. Doesn't matter they all use the same SAE mounting. You just need one with the right GPM and pressure capacity. Probably a 25GPM pump but you can get that off the numbers on the pump. If you want to slow the loader down you get one with a GPM rating of 15-20.
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Today's Featured Article - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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