Ford-New-Holland TL70 Hydraulics Remotes Operating

[TractorTech]

Those screws with jam nuts are for the detent adjustment on the remote valves.

 

[LouNY]

In your first post the adjusters shown (pic #6) are your flow adjusters. At least the number one control is set to the absolute minimum flow rate. Until you can get those freed up and adjusting you will not get increased flow rates from your valves.
To check your flow rates attach an open hose to one remote connection and direct it into a 5 gallon bucket, securely hold onto the hose and have someone actuate the control to get flow from that port it may splash quite a bit. Switch the hose to the other port for that valve and repeat while moving the control handle the other way.
You have more then adequate flow available your restrictors are set to minimum flow open them up and it will be fine.
1/4 inch hose will slow the operation slightly but not to extremely.

 

[Fred185]

I took some pics of the pumps. I tried to find them in parts list but no luck. The one closest to the front looks like the biger pump based on apperance and line size. But every line heads to rear of tractor. I know they have to somehow connect to power steering. Some numbers visible but can't match to any part online. This TL70 is suppose to be a Delux and could have a bigger pump. It came with a factory loader. The frame on it blocks acess to a lot of parts. The loader and 3-point works fine and fast.
Thanks to all for your help.

 

[Fred185]

I remember now I purchased the service manual. Howerver it appears this tractor can only operate a single acting cylinder. I only found one part made refrence to a double acting valve, but still does not show high pressure fluid going in both directions to cylinder. Almost looks like you connect high pressure from two different remote valves. Not sure it that's even safe to do. Has 4 pages (single acting)and drawings showing all four positions of control handle. I attached three pages from manual instructions

 

[LouNY]

Each of your remote valves is a double acting valve, you connect a pair of hoses to a remote two way cylinder. When the control lever is moved one way from center one port receives pressure, the other port on that valve opens to return fluid flow to the tank. When the lever is moved the other direction the first port becomes the open return and the previous return becomes the pressure port.

If you connect to a single action cylinder, a cylinder having only one line going to it, you will only have a single hose to connect to your quick connects. You can use either port to extend the cylinder, but you will need to go in the other direction to allow the gravity load to retract the cylinder or the preferred method is to move the control lever to the float position, that will allow the gravity action to retract or extend the cylinder as it desires.

 

[TractorTech]

The following are pages from the 40 Series Fords that show the remotes mounted at the rear. This is what you have on the TL, but your valve body is mounted under the cab. The instructions and diagrams are clearer in the 40 Series manual than those on the TL.
Last picture shows the pumps off of a TN. Yours are the same with the exception of the hydraulic filter. Yours has a filter on each pump.

 

[Fred185]

Each of your remote valves is a double acting valve, you connect a pair of hoses to a remote two way cylinder. When the control lever is moved one way from center one port receives pressure, the other port on that valve opens to return fluid flow to the tank. When the lever is moved the other direction the first port becomes the open return and the previous return becomes the pressure port.

If you connect to a single action cylinder, a cylinder having only one line going to it, you will only have a single hose to connect to your quick connects. You can use either port to extend the cylinder, but you will need to go in the other direction to allow the gravity load to retract the cylinder or the preferred method is to move the control lever to the float position, that will allow the gravity action to retract or extend the cylinder as it desires.

Okay, I wish that was the case. I have a angle snow plow with two small cylinders and two connections going to them. There is a bleeder port on both cylinders. I bleed everything many times. I turned the fluid adjuster max in both directions. It takes at least 3 minutes to end of travel fron straight. To return to oppsit end of travel over 5 minutes. No more than 32 ounces of fluid in a cylinder. The TL70 repair manual does not show a case that a double acting cylinder is used. But full back should make the plow complete a stroke in a few seconds. The book indicates a four position lever A position is full back lifting position B is neutral C is lower implement and drawing shows no high pressure oil. D is float. I think I will try and run a open line back to the sump tank with a funnel to see how much oil I get. I have a front end loader and works great and so does the 3-point hitch lift.
Thank you for your input and everyone else. The plow is new and don't see anying odd about it. It has a block with four hoses that must be correct. Or it would not move at all. I actually ran into a tree and inched foward with my hand on the lever to get in in the correct position faster. LOL

 

[TractorTech]

Okay, I wish that was the case. I have a angle snow plow with two small cylinders and two connections going to them. There is a bleeder port on both cylinders. I bleed everything many times. I turned the fluid adjuster max in both directions. It takes at least 3 minutes to end of travel fron straight. To return to oppsit end of travel over 5 minutes. No more than 32 ounces of fluid in a cylinder. The TL70 repair manual does not show a case that a double acting cylinder is used. But full back should make the plow complete a stroke in a few seconds. The book indicates a four position lever A position is full back lifting position B is neutral C is lower implement and drawing shows no high pressure oil. D is float. I think I will try and run a open line back to the sump tank with a funnel to see how much oil I get. I have a front end loader and works great and so does the 3-point hitch lift.
Thank you for your input and everyone else. The plow is new and don't see anying odd about it. It has a block with four hoses that must be correct. Or it would not move at all. I actually ran into a tree and inched foward with my hand on the lever to get in in the correct position faster. LOL

Just curious and a dumb question, are the left and right cylinders plumbed into the same remote circuit? That would be vertical.

It would be great to see your plow plumbing. Since your loader works fine, it is not the pump or remotes.

 

[LouNY]

Fred it is the case,
A plow with two small cylinders that have "bleeder " ports, those are unusual cylinders.
You are trying to read too much into your drawings.
"The book indicates a four position lever A position is full back lifting position B is neutral C is lower implement. D is float."
This is correct
Are you using the correct quick connects.
Do you have neighbor that could look at your setup.
Or even pay the dealer for an hours service call.

 

[Fred185]

Just curious and a dumb question, are the left and right cylinders plumbed into the same remote circuit? That would be vertical.

It would be great to see your plow plumbing. Since your loader works fine, it is not the pump or remotes.