3000-4000 hydraulic lever

mistermum · Apr 22, 2016

I have a 1966 ford 3000 and an early 1970's 4000su both suffering the same problem. when I have an implement hooked to the 3 point hitch they both lift very easily, but there is resistance trying to move the lever up and it immediately drops when I take my hand off. the heavier the implement the worse the problem is but nothing I hook up is excessively heavy, typically an old 2 row cultivator or something similar. The lever moves very smoothly and stays where put if tractor has nothing hooked up. I have owned about 8 of these tractors and these are the first 2 to have this problem unless I have something very heavy hooked up. Any Ideas?

Fordfarmer · Apr 22, 2016

There's a friction disk at the pivot point of the lever, and a spring behind the nut holding the lever against the friction disk. Your friction disk may be worn out, or more likely, it just needs a little more pressure from the spring. Tighten the nut a half turn or so, and see if that helps.

Larry NCKS · Apr 22, 2016

(quoted from post at 06:08:36 04/22/16) There's a friction disk at the pivot point of the lever, and a spring behind the nut holding the lever against the friction disk. Your friction disk may be worn out, or more likely, it just needs a little more pressure from the spring. Tighten the nut a half turn or so, and see if that helps.

That doesn't explain why he senses resistance to raising the lever when there's even a light implement hooked up. Increasing tension on the disk would only exacerbate that issue.

Unfortunately, I've run into this before on something, but I don't know what the answer is.

Destroked 450 · Apr 22, 2016

Check the adjustment on the top link spring, if that doesn't help you'll need to pull the lift top to check and readjust the valves.
Does it do it in both draft and position control?

3000-4000 hydraulic lever

mistermum

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Fordfarmer

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Larry NCKS

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Destroked 450

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