OK, next I'd make sure the remote is working. Easiest thing is probably remove fitting from high pressure line going to the shaver valve and do the same test into a bucket with the remote valve open. If you happen to have a stub of hose with a quick disconnect on one end that fits the remote, an easier way would be connect it to the remote valve using the quick disconnect so you don't have to take anything apart.
Shaver post pounder
- Thread starter THEPARTYHOUND
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OK, next I'd make sure the remote is working. Easiest thing is probably remove fitting from high pressure line going to the shaver valve and do the same test into a bucket with the remote valve open. If you happen to have a stub of hose with a quick disconnect on one end that fits the remote, an easier way would be connect it to the remote valve using the quick disconnect so you don't have to take anything apart.
OP
THEPARTYHOUND
Gold Member
I know that i have fluid coming from the remote because i used it to flush the pounder in the earlier post and it flowed out very quickly...a gallon in only a few seconds.
Then I'd say it's proven that the shaver valve is not working. Does it feel like the valve has complete free motion? Does it seem like the valve handle is moving the same distance when you move it both directions from neutral position? The only thing I can think of before pulling the spool out is removing the bottom cup to see if it's filled with a bunch of rust or some crud that's preventing the spool valve from moving fully into position. That would be an easy check, the bottom cup is easy to take off and doesn't see the hydraulic system so you don't have to worry about damaging anything or losing orings. If it's like mine, there are 4 allen screws that hold the bottom cup on, I've included a photo of mine with my finger pointing at the thing you want to take off. There shouldn't be anything inside that will fall out, but best to put a bowl under it just in case.
OK, hold on, I just read this again. When you say you push on the valve, if it's like mine, that's the direction that would cause the ram to come down, not go up. Did you try moving the valve in both directions to see if either direction produces oil flow?
OP
THEPARTYHOUND
Gold Member
I did try pushing it both directions. When pulling down oil flow through the return hose seemed to increase.
I will post a pic of the part that is missing screws. It seems similar to the cup you were pointing at.
OP
THEPARTYHOUND
Gold Member
*FIXED*
I got the problem figured out. It was operator error. When i plugged the pounder in to the hydraulic port on the tractor and pulled the lever on the tractor to actuate the hydraulic port i got fluid into and back out of the pounder. This led me to believe that i had the lever on the tractor in the correct direction. Today, on a whim, i pushed the lever on the tractor in the other direction. Bingo! The pounder lifted and i was golden! Thanks for all the help guys!
I got the problem figured out. It was operator error. When i plugged the pounder in to the hydraulic port on the tractor and pulled the lever on the tractor to actuate the hydraulic port i got fluid into and back out of the pounder. This led me to believe that i had the lever on the tractor in the correct direction. Today, on a whim, i pushed the lever on the tractor in the other direction. Bingo! The pounder lifted and i was golden! Thanks for all the help guys!
Great, glad it's fixed, but I'm scratching my head trying to understand what was happening. Why would there be any flow to the pounder valve if the remote lever was in the wrong position? There should have been no flow to the valve, because it was connected to the return side of the remote valve, which only sees the return pressure in the hydraulic system. Or was it because the valve inlet was looking at the relatively low pressure in the hydraulic system, and that was enough pressure to force some fluid through the valve and out the shaver return line? I would have thought it would have been more like a dribble rather than a high speed flow.
OP
THEPARTYHOUND
Gold Member
I agree, thats what i thought too. I have very little knowledge of hydraulic systems and that was why i posted up here. It put a gallon of hydraulic fluid through the pounder in a matter of a few seconds, so it certainly wasnt a dribble! Thats why i thought i was on the right port and didnt bother trying to push the lever in the other direction on the tractor.
Tx Jim
New Member
If SCV is operating correctly there should be no hyd pressure to post pounder when tractor scv control lever is moved in opposite direction. Poppet valves in tractor control valve must be leaking internally