It's a 2000 50hp with the single ram and relief screw on the back not on the side. It was working but would noticably leak down. It had no signs of leaks but sounded alittle lowfluid but would go all the way up. I checked the relief valve first, then checked the fluid with it up. Alot or pressure and fluid came out. I tried refilling it and it wouldn't moved either way after a while of bleeding it. I attatched a hose to the fill with a bottle up high so I know its getting fluid. I have a service manual from 1999 which looks similar but they show the relief on the side.
So I bought a seal kit, replaced all the seals, orings and scrapers on the main ram. Nothing looked abnormal. I swapped the up /down check valve assys to see if the problem moves. Same senario as before. My relief valve has 1 larger o-ring towards the head and a flat rubber seal on the end. It has another groove in the middle that looks like a o-ring could go but it wasn't there. Now after trying to bleed it with the ram disconnected, it's moving up and down but wont hold any weight. I can push it down with my hand. If I try holding the ram down as it's trimming up I can slow it down and it just overcomes my strength ( And I'm not that strong...Lol) It definately weak. Now I hooked the motor back up and on the locks it pulls down hard on the motor but won't go up, not even to release the downward pressure. If I turn the manual release, it will release the pressure and I hear alot of air/fluid movement. . So it sounds like the release screw is good. It seems like its not making/holding up pressure.
If it was anything to do with the end of the ram, I would think it would not hold Up Or Down??? Maby it has a enternal leak I'm trying to chase. I'm determined to figure this out so any help or tests would be great.
Thanks,
Steve in Florida
So I bought a seal kit, replaced all the seals, orings and scrapers on the main ram. Nothing looked abnormal. I swapped the up /down check valve assys to see if the problem moves. Same senario as before. My relief valve has 1 larger o-ring towards the head and a flat rubber seal on the end. It has another groove in the middle that looks like a o-ring could go but it wasn't there. Now after trying to bleed it with the ram disconnected, it's moving up and down but wont hold any weight. I can push it down with my hand. If I try holding the ram down as it's trimming up I can slow it down and it just overcomes my strength ( And I'm not that strong...Lol) It definately weak. Now I hooked the motor back up and on the locks it pulls down hard on the motor but won't go up, not even to release the downward pressure. If I turn the manual release, it will release the pressure and I hear alot of air/fluid movement. . So it sounds like the release screw is good. It seems like its not making/holding up pressure.
If it was anything to do with the end of the ram, I would think it would not hold Up Or Down??? Maby it has a enternal leak I'm trying to chase. I'm determined to figure this out so any help or tests would be great.
Thanks,
Steve in Florida