Post driver hookup Case jx95

[dao4ccl]

I have a Case JX95 that I want to hook up to my new Shaver HD12 post driver. The hydraulic into the driver is the usual quick coupler but, the return from the post driver is a 1" diameter hose. I was told it should dump in to the hydraulic tank on the tractor. The only opening I find is the fill plug at about 3/4". Any ideas where or how to hook up the return line to my tractor? I thought about plumbing into the 1" line that feeds the hydraulic filter or rigging up a hydraulic fluid dump tank that I would than plumb into a smaller sized port on the tractor (yet to find).

 

[DT86]

We have a HD-10, on some of the tractors we've used it on we just adapted down to 3/4 with standard metal pipe fittings. We have had no problems in doing this. I'll try to get you a picture tomorrow.

 

[J_J]

If you want to filter the return fluid from the past pounder, then tee it in before the filter.

 

[Todd NE WY]

I don't think you want it going thru the filter. My understanding of these post drivers is you need and unobstructed flow from the return in to the reservoir. The post is driven by the springs pulling the weight back down at high velocity. The hydraulics are used to raise the weight and tension the springs. When you let off the valve lever all of the fluid is quickly pushed out of the cylinder, any restriction in that flow will interfere with the springs pulling the weight down.

 

[J_J]

Everything going into the reservoir should be filtered. So if the tractor filter can not handle the return flow, then add an external filter that can flow the pounder GPM's. It can be mounted on the post pounder.

Excerpt:

Attach hydraulic
return hose (larger diameter, G20) to the
tractor return port.

Does the tractor have an input filter or a return filter, or both?

 

[RickB]

Return flow from Shaver post drivers MUST return directly to the reservior by means of a zero-pressure return. DO NOT attempt to return the oil to a filter (which would be nearly impossible on a JX) and DO NOT install an external return filter. Rig a return fitting into the hydraulic oil fill, call your CaseIH dealer and ask for the location of the zero pressure return on your tractor (there should be an ASIST bulletin covering that), or call Shaver and ask how to connect your specific tractor model. If you prefer to use a quick coupler of some kind on the return, be certain that it will flow more oil than a 1/2" ISO standard coupler which is not quite adequate for the job. 3/4" unrestricted fittings will work.
Been there, done that on several Shaver installations.
Dont re-invent the wheel or take advice from folks that wouldn't know a post driver if it hit them on the head.

 

[SPYDERLK]

Everything going into the reservoir should be filtered. So if the tractor filter can not handle the return flow, then add an external filter that can flow the pounder GPM's. It can be mounted on the post pounder.

Excerpt:

Attach hydraulic
return hose (larger diameter, G20) to the
tractor return port.

Does the tractor have an input filter or a return filter, or both?

The peak return flow from a post pounder is huge -- over a quart per second average with even one of the HD8 Shavers -- perhaps a gallon per second at terminal fall velocity [end of fall]. The HD 12 will be several times as much because the much heavier drive head and helper springs requires a proportionately bigger cyl to lift. The restriction caused by even a large filter at well over 60GPM peak flow would seriously hamper the driver by slowing its fall. Dont obstruct the return from the driver at all. Youll be happy you didnt.
larry

 

[jinman]

Not to beat a dead horse, but my tractor has a filter on the suction side of the pump. If you dump fluid into that large pipe, you will likely cause surging of the input pressure to the main pump as suddenly the suction side will be under pressure rather than suction. That's if you don't blow up the filter that was never designed for pressure. I've never understood why anyone would filter a return-to-reservoir line anyhow. The reservoir is the most likely source of contamination, and filtering the suction side ensures reservoir debris are stopped before going to the main pump.

Okay, this dead horse is also properly beaten.

 

[J_J]

The tech at Shaver said the fluid flowing out the cyl on the return stroke is about 16 oz/1 pint per stroke. The return fluid into the 1in hose is flowing out in cycles, not continuous. Strokes per minute is variable according to the operator.

I believe the cyl is about a 1 in cyl, maybe .5 shaft/rod that would give it 1/4 in walls

I really don't think the GPM's figures some of you quoted is valid.

Shaver said you could run a filter if it posed no or low restriction.

If you want to try a filter, put a gage in the return hose and you will see exactly what is happening. You should be looking for a pressure less than 50 psi on the return hose.

Your reservoir is supposed to be clean and a lot of hyd system draw out of the reservoir directly.

Hydrostatic systems especially like clean fluid and therefore use an input filter. So it appears there is no one answer for hyd filters. They each have a place and use.

Just about all the engine driven log splitters have a return filter .

On some of the Shaver hyd trailer pkg, the pump is inside the tank, and the tank should be clean, so a return filter is about the only option.

 

[J_J]

The peak return flow from a post pounder is huge -- over a quart per second average with even one of the HD8 Shavers -- perhaps a gallon per second at terminal fall velocity [end of fall]. The HD 12 will be several times as much because the much heavier drive head and helper springs requires a proportionately bigger cyl to lift. The restriction caused by even a large filter at well over 60GPM peak flow would seriously hamper the driver by slowing its fall. Dont obstruct the return from the driver at all. Youll be happy you didnt.
larry

16 oz of fluid into a 1 in hose is going to produce how many GPM at maybe 7 to 10 cycles per minute.

You reckon that valve will handle that volume?