How to run aftermarket power steering? JD 2cyl

I'm hoping to put a JD 70 diesel to work, using the 3-point. Trouble is, the remotes are occupied by lines that feed an aftermarket Char-Lynn power steering unit, so I cannot operate the rockshaft because doing so interrupts my power steering!

Any thoughts from you experts on how to 'get around' this?
Belt-driven PS pump up front?
Baker 950-250 multi-valve?
Sturdy club to the head?
 
(quoted from post at 13:15:44 09/26/16) I'm hoping to put a JD 70 diesel to work, using the 3-point. Trouble is, the remotes are occupied by lines that feed an aftermarket Char-Lynn power steering unit, so I cannot operate the rockshaft because doing so interrupts my power steering!

Any thoughts from you experts on how to 'get around' this?
Belt-driven PS pump up front?
Baker 950-250 multi-valve?
Sturdy club to the head?

Hurl the aftermarket stuff and salvage everything from a
Donor.
 
The easiest way to do what you want to do is to find a pump that mounts behind the distributor to run the power steering unit. Then you could run the remotes or rockshaft as they were intended. Mike
 
Here is how I ran mine on my 60 4X4..
a238523.jpg
 
Not to knock the experts below, but yes, I caught it that you are working on a 70 diesel, and that there is NO distributor in that scenario. The Char Lynn unit is supposed to use a front mounted pump, and
drive off of a fan pulley.
 
I have steered a Char-Lynn unit, a Behlen unit and many factory units. I agree that the aftermarket units work well. However, a properly adjusted factory unit will work as well or better than they do. I have a factory unit on a 70 gas that will steer all day long with one finger. Mike
 
I guess the root of my comment was that I am partial to the Char Lynn units. I have two here on the farm, and some JD units as well. The Char Lynn units require no adjustment, and are a lot simpler. I used to cultivate 200 acres or so with an A, a 4 row front mount cultivator, and a Charlynn power steeering. And even with the rigs on, after a long hot day, she'd still steer with one finger. It was, and still is, a one finger unit. Installed in the very early 70's, it still will steer like a 4020.

My experience with the JD units is this: Yes, you can make them steer well. But it takes A LOT of patience, and it may or may not work perfectly in the end. I had an uncle (now deceased) that loved to play with 'em. And he could get them to work well. If well adjusted, he be proud if he could dig a hole in the driveway by spinning the wheels back and forth with one finger. Even he would admit though, that his 70 gas with char lynn would steer better- and that was with a mounted picker! The worst deal with the Deere units is finding the happy medium of performance between hot oil and cold oil. Oftentimes, the Deere unit would steer great cold, but would lose their ability when the oil got hot after a few hours. Or the opposite- great when hot, but would flutter badly when the oil was cold.

And so my opinion is it would be a lot simpler to find a Char Lynn pump for the front end than it would be to swap out a front pedistal, fan shaft etc, and then rebuild to factory specs... keeping in mind that the Deere original 70 power steering was frequently updated to the newer style actuating sleeve etc of a later 720/730. I think it would be shorter upfront cash outlay, and longer term reliability. Beiung the tractor is already equipped, why not just find the correct pump?
 
(quoted from post at 17:35:15 09/26/16) I guess the root of my comment was that I am partial to the Char Lynn units. I have two here on the farm, and some JD units as well. The Char Lynn units require no adjustment, and are a lot simpler. I used to cultivate 200 acres or so with an A, a 4 row front mount cultivator, and a Charlynn power steeering. And even with the rigs on, after a long hot day, she'd still steer with one finger. It was, and still is, a one finger unit. Installed in the very early 70's, it still will steer like a 4020.

My experience with the JD units is this: Yes, you can make them steer well. But it takes A LOT of patience, and it may or may not work perfectly in the end. I had an uncle (now deceased) that loved to play with 'em. And he could get them to work well. If well adjusted, he be proud if he could dig a hole in the driveway by spinning the wheels back and forth with one finger. Even he would admit though, that his 70 gas with char lynn would steer better- and that was with a mounted picker! The worst deal with the Deere units is finding the happy medium of performance between hot oil and cold oil. Oftentimes, the Deere unit would steer great cold, but would lose their ability when the oil got hot after a few hours. Or the opposite- great when hot, but would flutter badly when the oil was cold.

And so my opinion is it would be a lot simpler to find a Char Lynn pump for the front end than it would be to swap out a front pedistal, fan shaft etc, and then rebuild to factory specs... keeping in mind that the Deere original 70 power steering was frequently updated to the newer style actuating sleeve etc of a later 720/730. I think it would be shorter upfront cash outlay, and longer term reliability. Beiung the tractor is already equipped, why not just find the correct pump?

Thanks for the good info! I just sold another 70d with factory power steering that leaked profusely and always 'steered' to the left. I share your opinion that the Char-Lynn is superior. I've toyed with the idea of hiding it under the sheet metal, but it would be a tight fit.

I was unaware that the Char-Lynn units had a pump available! I'm all for it. Any wisdom regarding where to find one? Should I expect to make a bracket, or might I find a bolt-on unit? Does it need/have a reservoir?

Thanks again ~Adam
 
There was a fellow in Ashland Ohio many years ago was showing me his A and B with add on units and he used automotive power steering pumps and had to make or modify brackets to mount them.
Wonder if you could just changeover the fanshaft and add the factory pump and use it to power the char-lynn unit ?
Sound like several below have used those units with success. I wondered how well they held up as all that power is now being transmitted through the steering gears that wear out in manual use.
 
(quoted from post at 07:45:50 09/27/16) There was a fellow in Ashland Ohio many years ago was showing me his A and B with add on units and he used automotive power steering pumps and had to make or modify brackets to mount them.
Wonder if you could just changeover the fanshaft and add the factory pump and use it to power the char-lynn unit ?
Sound like several below have used those units with success. I wondered how well they held up as all that power is now being transmitted through the steering gears that wear out in manual use.

Mike,

Next time I'm on the tractor I'll take down the Char-Lynn part # and search online for specs on the unit, in hopes of finding pressure and flow rate requirements. Then I can see about finding a suitable automotive pump with built-in reservoir.

I'll also try to look up specs on a factory JD pump, since that would look more authentic (though likely be more costly).

As to the wear of steering gears, I pondered that too, but fortunately I don't detect a great deal of slop in my steering. Could be the gears were replaced by a previous owner...

Adam
 
Adam, Google will find you the genuine char lynn pump... almost $600 for a new one. Char lynn also had a tank (with filter) as part of the kit. I think ebay, or a salvage yard might be of help to you. Good
luck.
 
Here's a couple of examples of pumps that might give you some ideas.

I saved these pics from this site, I think, but I'm sorry that I don't know who originally posted them.
a238575.jpg

a238576.jpg

a238577.jpg
 

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