powertrol on J D model 70

I am installing a 3 point hitch on model 70. Hydralic is set up for remote cylinder now. Works good. What do I need to do to get the rocker arms to lift/lower?

Dis-connect the hydraulic cylinder, & the 3pt will lower by gravity. The rotating rockshaft on the tractor will remain in the up position all the time without weight on it . If the Cylinder is attached the fluid will take the path of least resistance. This makes running a semi mount plow a problem because if more weight is on the cylinder the 3pt will come up first, & vice-versa. Also makes raising both the 3pt, & cylinder at the same time impossible. If pulling anything with a cylinder, & nothing on the 3pt arms; the arms will always fall after the trailed item falls, & raise before the trailed item raises.

To regulate the drop rate... Bottom of Hydraulic Housing is a nut that is abnormally long with a jamnut (called a throttle valve screw). Loosen it, & screw in to increase flow, & screw out to decrease flow. the tighten the jamnut when set!

If You don't have a manual... Its well worth the money. They don't make them like they used to is more true now than ever before!!!

To add to above comment; should have mentioned when NO 3pt is on the tractor You can rotate the rockshaft down by hand. If You really can do without a 3pt then I wouldn't add it. If all You are going to use is equipment without a cylinder then probably alright. If a lot of both get a tractor that separates to 2 systems like IH 666. I can raise both cylinder & 3pt at the same time, & regulate how deep each goes in toward the ground! Cant be done with a 70!

Put on a Baker valve and you can run 3pt and remote cyl at the same time. You do need the dummy plugs installed the power trol valve

If I have "quiktatch" couplings on the cylinder hoses, do I still need to remove and put dumb plugs in?





what is a "Baker"/

You need to take the plugs out that the hydraulic hoses plug into and then put dummy plug back in and then your rocker arms automatically go up and down if you don't have any of the dummy plugs you can buy them I believe yesterday's tractors may even have them for sale they're not too expensive before out of the rear of the power trawl make sure to release all the pressure on the hydraulics first I do the same thing on my 60 all the time

There are several pages of text, drawings and images in the operator's manual that cover the topic.
A couple of sentences on the internet is a good try but doesn't cover the topic.
1-800-522-7448 for the manual.