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My thought is that there is air in the line. I had problem like that with my splitter. To cure it I had to stand the splitter on end because the oil fill is at the wedge end. I filled it. set it back horizontal and cycled the ram full length 3 times. I stood it on end again and could add more fluid. When I filled again it was now full of fluid and works properly. It also could be that the splitter is not powerful enough to split that size log down the middle. I must take a smaller bite then it works.
make sure that the ram is in the fully retracted position
empty oil reservoir until the oil level is at the required position normally about 1/4 inch below filler plug
if oil is added with the ram at any extension then the extra oil will be pushed back into the reservoir and over flow out
well it's a complete guess due to fact you didn't mention model or mfg or even a photo , but most log splitters have a auto return tripper device this should activate ,either a switch or hydraulic lever to reverse the flow of oil from the cylinder after a log is split , some models even use large springs to force the cylinder back into its sleeve after it extends out , I guess springs could break ? this would be easy to clearly see with a close visual inspection
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thanks
First of all, I hate to, but have to ask, have you verified oil level is up to proper level? Have you checked power at directional solenoid when handle is moved to different directions, as well as released? Obviously when handle is in stop position, there shouldn't be power to motor in either direction. I can't see exact model, or design obviously,but that would be a good place to start.
remove the one end of the hose that is from the rod end of the clylinder.
two ways you can go here. either: detach the one end of the hose that is attached to directional control valve and leads to the cap end of the cylinder and place the end in a pale then retract the cylinder by physically forcing the rod back in and all the oil will drain out of the cap end into the pale and the rod end will fill with air.
or u could hold the directional valve in the position to let the oil flow back to tank while physically forcing the rod back in. the oil in the cap end will drain to tank and rod end will fill with air.
drain the tank of oil.
if you wanted to be extra thurough remove the remaining lines and drain the oil out of them.
reattach all lines.
replace oil filters/strainers. should be one on the return line going to tank. and one on the suction line before the pump. But there may not be a second filter.
fill tank with new oil.
extend the cylinder using the pump. allowing the air to bleed off the rod side. may chatter at bit while extending. if excessive chatter remove line end to allow the air in the rod side to bleed to atmosphere and continue till fully extended.
reattach line. probably a good idea to run a couple cycles.
and repeat the entire process for a thurogh flushing.
! note: dont be dissconnecting lines with pressure in them or while the system is running.
! note: be sure to have enough oil in the tank so the pump is not sucking air. this will eventually cause unrepairable damage to pump if sucking air for too long.
i just wrote this off the top of my head and ive only worked on industrial hyraulic systems and never on a log splitter before so just keep that in mind. hope it helps
I'm afraid that your splitter ram is stucked. This is based from your comment that all the hoses are disconnected. Therefore, there is no more pressure going to the ram, Unless of course if the line is clogged. By the way, are you sure if the ram is depressurized.? Please have this checked. However, if you are sure, then, there is no other way but to dismantle the ram, and check for the part inside it that caused it to stucked.
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