Hydraulic Remote "Feedback" - 841S

radara4077 · Jul 22, 2014

Is it normal to feel "feedback" in the handle of a remote hydraulic valve on these tractors? Seems to happen when I'm lifting the implement. It feels like something is rotating against the handle and pulling on it steadily about 3 times per second. Am I feeling pulses of pressure from the pump itself? My ignorance may be showing here, but I just wanted to make sure I wasn't destined to tear something up or wear something out...

Dan Price · Jul 22, 2014

It doesn't do that on mine at all...it is smooth feeling,,,

JMOR · Jul 22, 2014

(quoted from post at 03:07:17 07/22/14) Is it normal to feel "feedback" in the handle of a remote hydraulic valve on these tractors? Seems to happen when I'm lifting the implement. It feels like something is rotating against the handle and pulling on it steadily about 3 times per second. Am I feeling pulses of pressure from the pump itself? My ignorance may be showing here, but I just wanted to make sure I wasn't destined to tear something up or wear something out...

Am I feeling pulses of pressure from the pump itself? " I would say definitely not. Because, at an engine speed producing 545 rpm PTO speed the pulse rate would be over 124 pulses per second and even with 5 bad & one good pump cylinder it would pulse 20 times per second. If you have a vane pump, multiply those pulse rates by about a factor of 2. In any case, far too fast for what you are feeling.

WayneIA · Jul 22, 2014

I get the feeling you have a Ford detented valve that is set to run as a two way system but you are using it as a one way system. If so, pulsating of the handle in your fingers is the detented valve trying to kick the valve to natural and you are holding it so it can't. Pictures of the valve would help?

radara4077 · Jul 22, 2014

Wayne, that's it exactly. It's a two-way valve that is (best we can tell) original to the tractor. And I'm using it with a "one-hosed" rake. Will that mess up the valve? Can I plumb it the opposite way and fix it?

I discussed this valve in detail in these posts (with pictures):

http://forums.yesterdaystractors.com/viewtopic.php?t=1135026&highlight=

http://forums.yesterdaystractors.com/viewtopic.php?t=1138004&highlight=

Dean · Jul 22, 2014

If it is an OEM Ford valve, it is convertible.

Instructions are in the I & T FO-20 manual.

Dean

WayneIA · Jul 22, 2014

That is a Ford detented valve. But you have a problem!!. On the left side of the valve(Left as you sit on the sear),I see a hole. That hole should have a T handle sticking out of it to change the valve from two way to one way. Clean out the grime and dirt .There should be a little snap ring in the outside surface in that hole..If you can get the snap ring out, I wander how luck you can be to get what is left of the threaded T handle out of the hole

WayneIA · Jul 22, 2014

I took a second look at your pictures. That 3/8 diameter shaft sticking out of the left side of the valve is what I am referring to. If you look close you can see where there was a roll pin in the end. That shaft(T handle) should be turned out about 3/4 turn from shut to run it one way. Sorrow,I didn't look good the first time

radara4077 · Jul 22, 2014

Wayne, thanks for the advice! I thought that shaft was perhaps a speed control or something. I'll run it all the way shut (righty-tighty, I guess?), then turn it as you suggest.

As a one-way valve, do you know which output I should use--the one toward the front of the tractor or towards the back? Or does it matter?

You learn something new every day...

WayneIA · Jul 23, 2014

The valve is designed so as to use the front port
to raise a loader with the handle back. It could be used the other way but , the loader would have a slit drop before raising.

radara4077 · Jul 27, 2014

Wayne, thanks for the advice! I finally got around to testing it out today. Had to take the seat off (luckily I've gotten pretty good at that through much practice), but I think it worked. I didn't have an implement handy, but based on the drag on the engine at idle when I pulled the handle back (and no drag when I pushed the handle forward), I think I'm set.

The rod could turn out beyond 3/4s of a turn past closed, what purpose does this serve?

Hydraulic Remote "Feedback" - 841S

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