JD 70 Power Trol Question

[JamesFC]

I have a 70 with factory 3 point hitch and the hydraulics raise and lower the arms. I would like to be able to use the hydraulics for using a cylinder to raise and lower my disc. What do I need to be able to have the ability to use the hydraulics for both uses.
Thanks in advance!

 

[Pete in MD]

If the Powr-Trol on the 70 is like the one on an A,B, or G you can only use either the rockshaft or a remote cylinder at one time.
To use a remote cylinder, remove the cap nut on the Metering Screw and turn the screw "in" until it seats firmly. The Metering Screw is on the left side of the Powr-Trol valve.

 

[James Howell]

"[b:654c4848f0][i:654c4848f0]What do I need to be able to have the ability to use the hydraulics for both uses[/i:654c4848f0][/b:654c4848f0]"

Take a look at the [b:654c4848f0]POWR-TROL VALVE HOUSING[/b:654c4848f0] diagram below.

Note the plug (Key 1) and the oil coupling (Key 22).

Take a look at the photo below of the plug, sometimes referred to as a "dummy plug".

Note that the plug has a solid, closed end.

The plugs are installed in the Powr-Trol housing when a remote cylinder is not in use.

Take a look at the photo below of the oil coupling.

Note that the oil coupling has an open end.

Take a look at the photo below of how the oil flows through the oil coupling.

If the remote cylinder has one hydraulic hose for both supply and return, then connect the hydraulic hose to the bottom oil coupling.

If the remote cylinder has two hydraulic hoses, one for supply and one for return, then connect the supply hose to the bottom oil coupling and the return hose to the top oil coupling.

A remote plug, whether it be a “dummy” plug or oil coupling, should be positioned with the hole horizontal.

The hydraulics seem to work better if the hole is horizontal.

The hydraulics sometimes seem not to work so well if the hole is vertical.

Hope this helps.

 

[Dan in Ohio]

Pete has it covered mostly except both can be used at the same time if you consider moving the lever forward raises the 3pt first then activates the cylinder such as is how a steerable plow can be used with a 70 but both functions do not occur at the same time. Now throw in the use of a selector valve and you can change functions without doing as Pete describes. The best advise would be for you to get the operators manual for the 70 as these functions are spelled out there and not the SM-2011 hydraulic equipment service manual as it seems to stop with the 60 which has always just added confusion to the issue as far as the 70 is concerned unless someone can tell me the 60 and 70 are exactly the same which as I understand it they are not.

 

[Dan in Ohio]

James,

I have never used an open ended plug as you show in your fifth picture in my two number series tractors (50, 60 or 70) although I do have a set for my A. Every time we discus this topic things just get cloudier as some of us have the remotes plumped out the side of the powrtrol valve with dummy plugs in and operate a loader just fine.

Would you agree the Operators manual instructions would be sufficient for most of the common uses?

 

[James Howell]

"[b:654c4848f0][i:654c4848f0]Would you agree the Operators manual instructions would be sufficient for most of the common uses?[/i:654c4848f0][/b:654c4848f0]"

Yes.

When in doubt I refer to the Operator's manual.

When I want to learn I refer to the service manual.

When all else fails I improvise.

 

[James Howell]

"[b:654c4848f0][i:654c4848f0]some of us have the remotes plumped out the side of the powrtrol valve with dummy plugs in and operate a loader just fine[/i:654c4848f0][/b:654c4848f0]"

Agree.

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[Mike M]

I my time with #45 loader on a model 50 I found that the loader worked best when plumbed into the side of the valve box. This also only offers pressure on one side of the cylinders which is fine since these are only one way cylinders anyhow. The extra set of hoses is needed to act as extra oil capacity when used on letter and 50,60,70 tractors. The later 20 series have larger reservoirs and get by with only 1 hose per cyl.

 

[Leroy]

If the 70 is anything like the A & B tractors you need what is called a Baker valve installed to be ablt to do what you are wanting. The orignal valve for your 3 point hitch and the Backer operates the remote cylinder and they could be stacked for multiple remotes. I did not have then and never saw one either, just them advertised. And I would never want a 3 point hitch on any of the A & B tractors I had.

 

[miangus]

We put a baker valve on an A that just had "Power Lift" worked great for the #5 mower. With "Power Trol" he should just need the correct hose ends.

 

[David.DeHart]

 

[David.DeHart]

 

[David.DeHart]

 

[David.DeHart]

I fabricated my own pioneer fitting connector set-up. Most of the parts came from Tractor Supply. I had to make my own bracket from a piece of angle iron. I'm not sure if the Power-Trol plugs will still fit in the original holder, but it's not needed anymore any how. I didn't want to get rid of it though. I used all of the original bolt holes, so no new holes were required. I got the inspiration from the back of the parts catalog where it shows a diagram for breakaway couplings and selector valve. The pictures I posted were from my 1954 JD 50, but I also did this conversion on my 1950 G.

 

[Leroy]

I do know on both the A & B tractors with power trol you CANNOT use both rockshaft and remote at same time, can use one or the other depending on hoe it is plumed but not both interchangeablity. The only thing between a power lift and a power troll will do is let you stop the rockshaft in mid position. You have to have 2 control levers to do what he wants to do and I am not sure that the 70 has that and the 720-730 has to have the optional second control lever. Your power lift should have had a foot pedal to raise and lower the rockshaft and not be able to stop it midway. 2 A,s and 2 B,s with power troll

 

[Butch1993]

Sorry for the delay in posting. I set mine up much like the last post with the Pioneer holder. One thing we did is to get the special plug, AA5724R that allows you to have "power" to both ports when using the side plugs. I found it on ebay for about $50. Sharp's Antique also has them at times http://www.external_link.com/mm5/merchant.mvc?Screen=SRCH.

 

[Butch1993]

Sorry for delay in post. As you usual great input from others. I bought my 70 last year and did similar change to put on a Pioneer quick connect set up. You can also have "power" in up and down out the side ports by using a special plug, AA5714 R. I got mine on ebay for about $50. Sharp's at http://www.external_link.com also have them at times.

 

[Butch1993]

A lot of great feedback that is why this forum is so great. I bought a 1956 70 last winter and finally about done fixing it up. We put on a Pioneer quick couple similar to this one with a home made bracket as well. That is what makes this hobby fun. I found the special plug (AA5724R) which allows to have "power" to both sides of your hydraulic cylinder. I got mine on ebay for about $50. I think Sharp's at www.external_link.com has them from time to time as well

 

[Butch1993]

A lot of great feedback that is why this forum is so great. I bought a 1956 70 last winter and finally about done fixing it up. We put on a Pioneer quick couple similar to this one with a home made bracket as well. That is what makes this hobby fun. I found the special plug (AA5724R) which allows to have "power" to both sides of your hydraulic cylinder. I got mine on ebay for about $50. I think Sharp's at www.external_link.com has them from time to time as well

 

[Butch1993]

A lot of great feedback that is why this forum is so great. I bought a 1956 70 last winter and finally about done fixing it up. We put on a Pioneer quick couple similar to this one with a homemade bracket as well. That is what makes this hobby fun. I found the special plug (AA5724R) which allows to have "power" to both sides of your hydraulic cylinder. I got mine on ebay for about $50. I think Sharp's at www.external_link.com has them from time to time as well

 

[Butch1993]

A lot of great feedback that is why this forum is so great. I bought a 1956 70 last winter and finally about done fixing it up. We put on a Pioneer quick couple similar to this one with a homemade bracket as well. That is what makes this hobby fun. I found the [b:51985f930d]special plug (AA5724R)[/b:51985f930d] which allows to have "power" to both sides of your hydraulic cylinder. I got mine on ebay for about $50. I think Sharp's at www.external_link.com has them from time to time as well

 

[Butch1993]

A lot of great feedback that is why this forum is so great. I bought a 1956 70 last winter and finally about done fixing it up. We put on a Pioneer quick couple similar to this one with a homemade bracket as well. That is what makes this hobby fun. I found the special plug (AA5724R) which allows to have "power" to both sides of your hydraulic cylinder. I got mine on ebay for about $50. I think Sharp's at www.external_link.com has them from time to time as well

 

[Butch1993]

A lot of great feedback that is why this forum is so great. I bought a 1956 70 last winter and finally about done fixing it up. We put on a Pioneer quick couple similar to this one with a homemade bracket as well. That is what makes this hobby fun. I found the special plug (AA5724R) which allows to have "power" to both sides of your hydraulic cylinder. I got mine on ebay for about $50. I think Sharp's at www.external_link.com has them from time to time as well

 

[Butch1993]

A lot of great feedback that is why this forum is so great. I bought a 1956 70 last winter and finally about done fixing it up. We put on a Pioneer quick couple similar to this one with a homemade bracket as well. That is what makes this hobby fun. I found the special plug (AA5724R) which allows to have "power" to both sides of your hydraulic cylinder. I got mine on ebay for about $50. I think Sharp's at www.external_link.com has them from time to time as well

 

[Butch1993]

A lot of great feedback that is why this forum is so great. I bought a 1956 70 last winter and finally about done fixing it up. We put on a Pioneer quick couple similar to this one with a homemade bracket as well. That is what makes this hobby fun. I found the special plug (AA5724R) which allows to have "power" to both sides of your hydraulic cylinder. I got mine on ebay for about $50. I think Sharp's at www.external_link.com has them from time to time as well