(quoted from post at 23:59:51 12/29/18) A while back, there was discussion about a "DYI" destroke valve, and sharing component info.
I asked for more info, and posted my email, have not gotten an email and the thread is "dead" several pages back.
Any news to report?
The fittings that go to and from the pump itself are off the shelf fittings. There is a small SAE pressure side port and i think a #6 SAE on the return side. Then there is only the manifold and the solenoid and hydraulic lines.
We looked at the application and we talked about it and they came to the conclusion that based on the pressure and return port sizes they didnt think that the flow rate could be high enough during engine cranking, less than 200 rpm, and initial starting that the closing of the solenoid would have a negative impact on the pump. They thought that if you were running at full speed, full pressure and started opening and closing that solenoid then yes, over time you could have an issue, but since this is for use under starting conditions, they felt confident in what we did.
(quoted from post at 10:14:11 12/31/18)The fittings that go to and from the pump itself are off the shelf fittings. There is a small SAE pressure side port and i think a #6 SAE on the return side. Then there is only the manifold and the solenoid and hydraulic lines.
We looked at the application and we talked about it and they came to the conclusion that based on the pressure and return port sizes they didnt think that the flow rate could be high enough during engine cranking, less than 200 rpm, and initial starting that the closing of the solenoid would have a negative impact on the pump. They thought that if you were running at full speed, full pressure and started opening and closing that solenoid then yes, over time you could have an issue, but since this is for use under starting conditions, they felt confident in what we did.
Thank you for sharing your research.
While I'm no engineer I do concur with the assessment that the valve's cycle speed is not likely to cause a problem as it will be operating with the pump spinning at cranking speeds or low idle at the most.
Looking at some older Parker literature I had on a thumb drive it appears that their DSL101 series valve would work for this application although I wonder if the near zero leakage of a poppet style valve would be necessary? Spool style valves usually come cheaper...…….
What style of valve did you end up using? Manufacturer P/N?
One other question. What is actually being controlled with this add on? The pump's own stroke control valve remotely or is it creating another path for oil to unload the pistons? I've always wondered...…..
(quoted from post at 16:14:11 12/31/18)The fittings that go to and from the pump itself are off the shelf fittings. There is a small SAE pressure side port and i think a #6 SAE on the return side. Then there is only the manifold and the solenoid and hydraulic lines.
We looked at the application and we talked about it and they came to the conclusion that based on the pressure and return port sizes they didnt think that the flow rate could be high enough during engine cranking, less than 200 rpm, and initial starting that the closing of the solenoid would have a negative impact on the pump. They thought that if you were running at full speed, full pressure and started opening and closing that solenoid then yes, over time you could have an issue, but since this is for use under starting conditions, they felt confident in what we did.
Thank you for sharing your research.
While I'm no engineer I do concur with the assessment that the valve's cycle speed is not likely to cause a problem as it will be operating with the pump spinning at cranking speeds or low idle at the most.
Looking at some older Parker literature I had on a thumb drive it appears that their DSL101 series valve would work for this application although I wonder if the near zero leakage of a poppet style valve would be necessary? Spool style valves usually come cheaper...…….
What style of valve did you end up using? Manufacturer P/N?
One other question. What is actually being controlled with this add on? The pump's own stroke control valve remotely or is it creating another path for oil to unload the pistons? I've always wondered...…..
I cant tell you exactly on the pump because if you look at the manual destroking kit, its an SAE port with a T on it driving down a pin inside the pump. As near as i can tell that is. i know enough about hydraulics to be dangerous so all i can do is rely on others smarter than me.
[b:c5a77d33aa]Ill dig back through my emails with Fluidtech and get cutsheets and part numbers for what i bought from them,[/b:c5a77d33aa] which was just the solenoid, the manifold and a nut. The rest i just matched up fittings at the local hydraulic shop and had them make a couple hoses. once i get this settled out some i may be able to get away from using 2 fittings on the pressure side and do something a bit different with the hoses, but, first things first. Get one thing done, fully test it out and go from there.
(quoted from post at 15:02:10 05/24/21) Just wondering how this project turned out?
Assuming the results were positive would you mind sharing the P/Ns for the solenoid / valve & the manifold / cavity?
TIA
Yes I have had mine installed for 18 months on my 4020. I liked it so much I installed them on all my JD's with closed center hydraulics. It is a PITA to install it on a 4020, but a 40 series was simple. These are cheaper then batteries and starters. Don't waste your money on a gear reduction starter either. Pics are from my 4020
Yes I have had mine installed for 18 months on my 4020. I liked it so much I installed them on all my JD's with closed center hydraulics. It is a PITA to install it on a 4020, but a 40 series was simple. These are cheaper then batteries and starters. Don't waste your money on a gear reduction starter either. Pics are from my 4020
(quoted from post at 09:05:10 05/25/21) This is sheer coincidence that we both were working on it at the same time.
I felt that Parker is better than a China equivalent, thats why I used Parker.
(quoted from post at 15:15:12 05/27/21) mine turned out fine, admittedly, the solenoid that was choosen was what they carried, i didnt have a dog in the fight, so i figured go cheap so if i am wrong i wont be out much 😂
(quoted from post at 14:43:53 05/25/21) Part numbers:
Parker Destroke
Coil
S8LW
Valve
[b:383d3f47e1]DSL081[u:383d3f47e1]N[/u:383d3f47e1][/b:383d3f47e1]
Cavity
08-2-A6T
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