Another Hydraulic Problem

Michaels Dad · Nov 10, 2017

Guess it's my turn, so here's what's happening on my 640.
All of a sudden I have to pull the 3 point lift lever all the way up to get my shredder to come all the way up.
Previously I only needed to move the lever about 3/4 of the way up to the adjustable stop to get it to come only part way up.
Fluid level is fine and fluid is clear.
Lift cylinder is is holding fairly well with motor off, but it does slowly lower with a heavy implement on it.

markct · Nov 10, 2017

Sounds like normal operation to me,
lever all the way up, 3pt all the way
up...lever part way up, 3pt part way up
that's how position control works

Royse · Nov 10, 2017

Did you switch it from position to draft control mode?

Michaels Dad · Nov 11, 2017

(quoted from post at 20:17:25 11/10/17) Sounds like normal operation to me,
lever all the way up, 3pt all the way
up...lever part way up, 3pt part way up
that's how position control works

But that's how it's working now. Worked like that the other day, now there is no "mid" position, it's either all the way up, or all the way down.
Draft control is in the right position, horizontal, I have never found a need for it.
Just wondering if it's that pesky pin problem, I replaced it several years ago.

markct · Nov 11, 2017

Ok I misunderstood how you said it. Yes
likely cam follower pin, cheap and easy
fix atleast

Michaels Dad · Nov 11, 2017

(quoted from post at 09:59:59 11/11/17) Ok I misunderstood how you said it. Yes
likely cam follower pin, cheap and easy
fix atleast

New development.
Just finished 2 hours shredding, went to lift up the shredder and there was a lot of resistance on the lever where there was hardly any before. Shredder lifted as it should to the stop I have set.
Now I'm thinking maybe a sheared woodruff key on that shaft or something the shaft mates to. Looking at the diagram of it and trying to figure out what it might be before tearing into it next trip up here in a couple of weeks.

Michaels Dad · Nov 11, 2017

(quoted from post at 12:58:53 11/11/17)

(quoted from post at 09:59:59 11/11/17) Ok I misunderstood how you said it. Yes
likely cam follower pin, cheap and easy
fix atleast

Click to expand...

New development.
Just finished 2 hours shredding, went to lift up the shredder and there was a lot of resistance on the lever where there was hardly any before. Shredder lifted as it should to the stop I have set.
Now I'm thinking maybe a sheared woodruff key on that shaft or something the shaft mates to. Looking at the diagram of it and trying to figure out what it might be before tearing into it next trip up here in a couple of weeks.

Since the edit feature doesn't work I'm using quote to add to my post.
After looking at the manual closer it looks like the problem might be in the control valve since it looks like the position lever appears to make it move.
For now, I'll just try moving the lever up and down for a while and see what happens.

Michaels Dad · Nov 11, 2017

(quoted from post at 13:07:21 11/11/17)

(quoted from post at 12:58:53 11/11/17)

(quoted from post at 09:59:59 11/11/17) Ok I misunderstood how you said it. Yes
likely cam follower pin, cheap and easy
fix atleast

Click to expand...

New development.
Just finished 2 hours shredding, went to lift up the shredder and there was a lot of resistance on the lever where there was hardly any before. Shredder lifted as it should to the stop I have set.
Now I'm thinking maybe a sheared woodruff key on that shaft or something the shaft mates to. Looking at the diagram of it and trying to figure out what it might be before tearing into it next trip up here in a couple of weeks.

Click to expand...

Since the edit feature doesn't work I'm using quote to add to my post.
After looking at the manual closer it looks like the problem might be in the control valve since it looks like the position lever appears to make it move.
For now, I'll just try moving the lever up and down for a while and see what happens.

If it wasn't so far to drive, I'd buy a lotto ticket.
Just kept working lever up and down and it started working as it should again.
All is well in Utopia again.

grandpa Love · Nov 11, 2017

Gotta love a 640. We got 2 of em,
sometimes they just act crazy. But
they sure work hard.

Royse · Nov 11, 2017

(quoted from post at 16:00:51 11/11/17)

(quoted from post at 13:07:21 11/11/17)

(quoted from post at 12:58:53 11/11/17)

(quoted from post at 09:59:59 11/11/17) Ok I misunderstood how you said it. Yes
likely cam follower pin, cheap and easy
fix atleast

Click to expand...

New development.
Just finished 2 hours shredding, went to lift up the shredder and there was a lot of resistance on the lever where there was hardly any before. Shredder lifted as it should to the stop I have set.
Now I'm thinking maybe a sheared woodruff key on that shaft or something the shaft mates to. Looking at the diagram of it and trying to figure out what it might be before tearing into it next trip up here in a couple of weeks.

Click to expand...

Since the edit feature doesn't work I'm using quote to add to my post.
After looking at the manual closer it looks like the problem might be in the control valve since it looks like the position lever appears to make it move.
For now, I'll just try moving the lever up and down for a while and see what happens.

Click to expand...

If it wasn't so far to drive, I'd buy a lotto ticket.
Just kept working lever up and down and it started working as it should again.
All is well in Utopia again.

Until it doesn't work again. Something is rotten in Denmark.

Michaels Dad · Nov 12, 2017

(quoted from post at 21:56:48 11/11/17)

(quoted from post at 16:00:51 11/11/17)

(quoted from post at 13:07:21 11/11/17)

(quoted from post at 12:58:53 11/11/17)

(quoted from post at 09:59:59 11/11/17) Ok I misunderstood how you said it. Yes
likely cam follower pin, cheap and easy
fix atleast

Click to expand...

New development.
Just finished 2 hours shredding, went to lift up the shredder and there was a lot of resistance on the lever where there was hardly any before. Shredder lifted as it should to the stop I have set.
Now I'm thinking maybe a sheared woodruff key on that shaft or something the shaft mates to. Looking at the diagram of it and trying to figure out what it might be before tearing into it next trip up here in a couple of weeks.

Click to expand...

Since the edit feature doesn't work I'm using quote to add to my post.
After looking at the manual closer it looks like the problem might be in the control valve since it looks like the position lever appears to make it move.
For now, I'll just try moving the lever up and down for a while and see what happens.

Click to expand...

If it wasn't so far to drive, I'd buy a lotto ticket.
Just kept working lever up and down and it started working as it should again.
All is well in Utopia again.

Click to expand...

Until it doesn't work again. Something is rotten in Denmark.

Yep, when something like this happens, I always wait for the other shoe to drop.
If and when it does, maybe it will at least give me something to look at and fix.

Another Hydraulic Problem

Michaels Dad

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markct

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Royse

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Michaels Dad

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markct

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Michaels Dad

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Michaels Dad

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Michaels Dad

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grandpa Love

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Royse

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