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good morning my green friends my 3 point weight bracket goes down when the machine is off ,but as soon as I start it goes back up?
please keep it clean we don't know whos reading lol
2nd how do I add photos to my album does it need a new name with each entry?
1026r fel home made edge tamers and home made suite case weight bracket.
 
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If your rockshaft lever is still in the raise position there is your answer :unknown:
 
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good morning my green friends my 3 point weight bracket goes down when the machine is off ,but as soon as I start it goes back up?
please keep it clean we don't know whos reading lol
2nd how do I add photos to my album does it need a new name with each entry?
1026r fel home made edge tamers and home made suite case weight bracket.
It shouldn't. Mine never does, no matter how much weight is on it.
Can't help you on the rest.
 
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More than likely your 3PH rockshaft seal is leaking. This involves removing the top of the transmission case to replace. As long as it's not fast and doesn't annoy you, it's not a big deal.

As a rule, it's always a good idea to lower any implement to the ground when you are not using the tractor. There's always a chance it could come to the ground in a hurry when not expected. Every time I stop my tractor, I lower both the loader and the 3PH. It also acts like a parking brake. :good2:
 

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Discussion Starter #5
It shouldn't. Mine never does, no matter how much weight is on it.
Can't help you on the rest.
thank you for your service ,
I'm sorry I didn't say that sooner
and thanks for your likes to my posts
 

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More than likely your 3PH rockshaft seal is leaking. This involves removing the top of the transmission case to replace. As long as it's not fast and doesn't annoy you, it's not a big deal.

As a rule, it's always a good idea to lower any implement to the ground when you are not using the tractor. There's always a chance it could come to the ground in a hurry when not expected. Every time I stop my tractor, I lower both the loader and the 3PH. It also acts like a parking brake. :good2:
Just imagine a couple kids playing around the machine when one inadvertently trips the 3-point control lever while another one is behind the machine.

All implements should be on the ground when dismounting the machine.
 

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Discussion Starter #7
More than likely your 3PH rockshaft seal is leaking. This involves removing the top of the transmission case to replace. As long as it's not fast and doesn't annoy you, it's not a big deal.

As a rule, it's always a good idea to lower any implement to the ground when you are not using the tractor. There's always a chance it could come to the ground in a hurry when not expected. Every time I stop my tractor, I lower both the loader and the 3PH. It also acts like a parking brake. :good2:
good idea I also lower my fel but for years I hade a bracket on previous tractors and didn't have to .
good answer thank you its common sense now that you mention it
 

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good morning my green friends my 3 point weight bracket goes down when the machine is off ,but as soon as I start it goes back up?
please keep it clean we don't know whos reading lol
2nd how do I add photos to my album does it need a new name with each entry?
1026r fel home made edge tamers and home made suite case weight bracket.
To learn more about forum "How Too's", click on Forum and then Forum Help and Suggestions. There is a listing of How Too's there. How to post pictures, How to add a signature, etc.

Now for your question, it is somewhat normal for a 3 point to drop when the engine is not running as long as it isn't dropping quickly.
How quickly does it drop?

You indicated "my 3 point weight bracket goes down when the machine is off", which seems to indicate you have weight on the 3 point. If you have weight on the 3 point, it is more likely that it will lower with the engine off.

The 3 point lifts with a single acting cylinder (pressure up, gravity down) control by the rockshaft (3 point lift) valve. If both the cylinder and valve are in good condition, the 3 point will not lower. If the cylinder or valve is not 100% (it is almost impossible for a valve to be 100%) then the oil will leak by slowly which allows the 3 point to drop.

You can isolate the cause of the 3 point dropping by doing this:
1. Raise the 3 point and close the "rate of drop" valve below the front of the seat.
2. Wait the length of time that it would normally take the 3 point to lower. Check to see if it lowered.
3. If it didn't drop, the component that is allowing the 3 point to drop is the control valve which is normal.
4. If it did drop, then the component that is allowing the 3 point to drop is either the rockshaft (3 point) lift cylinder or the surge relief valve, which is not normal.

Technically, with the "rate of drop" valve closed, the 3 point should not lower, even with weight on it. If it does, this most likely means hydraulic oil is bypassing the piston seals in the rockshaft cylinder which is not what is supposed to happen. The other component that could cause this is if the surge relief valve is leaking by. This is probably not as likely.

If you leave the 3 point raised on your tractor when it is parked, you should close the "rate of drop" valve to prevent any inadvertent lowering of the 3 point. :good2: Best thing to do is lower it, especially with weight hanging on it.
 

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If your rockshaft lever is still in the raise position there is your answer :unknown:
i should have added that I was only answering as to why it comes back up on start up. I was taught many years ago that anytime you have anything on the 3 point that it gets lowered when parked.
 

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good morning my green friends my 3 point weight bracket goes down when the machine is off ,but as soon as I start it goes back up?
An important factor in this is missing. How long does it take for this to happen?

If you shut your machine down and the 3pt starts dropping immediately and your implement/ballast box hits the floor in 2 minutes, there is a problem. If you are parking your machine and finding your implement/ballast box on the floor the next day, that's fairly normal.

Both the loader and the 3pt have a "leak down". Your service manual will tell you what is the acceptable rate for that leak down.

The test for my machine is listed as a "Rockshaft Leakage Test". The manual tells me to raise the rockshaft to full height and then shut the machine off. I'm supposed to measure after 5 minutes. The max allowable drop at 5 minutes is 2". So after 30 minutes it could drop a full 12" (which would put my ballast box on the floor) and still meet specs.
 

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With all the leak downs being mentioned on the 3PH I'd say my tractor was made between Tuesday and Thursday. It just doesn't leak down. The FEL is another story. It does leak down over time. But even that takes some time.
 

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I always lower attachments to ground. Safer and requires no pressure to keep it there.

Sent from my SAMSUNG-SGH-I257 using Tapatalk
 

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Good answer

An important factor in this is missing. How long does it take for this to happen?

If you shut your machine down and the 3pt starts dropping immediately and your implement/ballast box hits the floor in 2 minutes, there is a problem. If you are parking your machine and finding your implement/ballast box on the floor the next day, that's fairly normal.

Both the loader and the 3pt have a "leak down". Your service manual will tell you what is the acceptable rate for that leak down.

The test for my machine is listed as a "Rockshaft Leakage Test". The manual tells me to raise the rockshaft to full height and then shut the machine off. I'm supposed to measure after 5 minutes. The max allowable drop at 5 minutes is 2". So after 30 minutes it could drop a full 12" (which would put my ballast box on the floor) and still meet specs.
The above is a good answer. Pretty much all machines will leak down sooner or later. It may take a while and in fact you might not notice it at all if you use the machine on a daily or weekly basis but no seal is absolutely perfect and eventually they will all leak down. Once it leaks down, the pressure is off. When you start the machine again with the lever in the up position, the TPH will respond and raise it back.

It's also good advice to lower implements/ballast/weight bars when parking the machine. Not only does that prevent them accidentally being lowered at the wrong time but as you discovered, if they've leaked down and you start up the machine they will quickly raise back to position. If someone is close to the implement or loader that can be a hazard. It's also a problem if you have casually left something like a wrench on the machine.

I have an old 15/16 - 1" box end wrench that's welded in the middle. I was adjusting a planter and left it on one of the units. I needed to raise the unit up to slide it over. When I moved the hydraulic lever, the planter came up and I had two separate wrenches each almost 1/2 length. I keep the old wrench around as a reminder of what can happen. It's also an old Craftsman, one of those made in the USA and seemingly last forever unless you test out hydraulics with them, lol.

Treefarmer
 
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