Loader curl leak down

[lexluther]

Ok, I am a desk jockey who is a die hard DIY guy and loves his tractor time, so go easy on me, i have searched for an answer, but there is a reason i am confused, see below.

I have a new holland tc24 and the loader bucket curl doesn't hold. It was slow at first, but now, it leaks down fairly fast, even with no load, you can watch it go fully down in less than a minute. The problem has gotten worse since i first noticed.

Tonight I decided to try and solve it one more time before calling a mechanic...the problem is the same even when the lines are disconnected at the quick disconnect fitting. Not only does it leak down, but if I grab the bucket, I can lift it and get about half way up by hand. There are no visible leaks anywhere while doing this.

Here is the confusing part...when the problem was fairly minor, I had the cylinders tested by the local hydraulics shop, they said they were in spec and didn't need rebuild...I think perhaps they got busy and didn't really test them or my problem has progressed?

With the lines disconnected it's essentially a closed system right? And no oil on the ground means it has to be the cylinder that needs rebuild right?

Thanks a million for the help!

 

[LD1]

You are correct. Just double check you are disconnecting the right lines. With the lines unhooked, that isolates the valve from the cylinders. With only the cylinders in the picture,and still drifting......cylinders are the problem.

The issue is the cylinders are tee'd together. So you could have an issue with only one cylinder and still have the same symptoms. Good idea to just have both rebuilt though.

Just curious, how many hours on machine?

 

[kennyd]

Rebuilding both curl cylinders should cure your problems.

 

[Rocky J]

I had that same problem with my loader, it would go down just as fast as it went up and it was the seals. In my case it was just O Rings and shims and wiper seals at the cost of $15 for three cylinders. I think mine had been rebuilt with the wrong O Rings and were not ment to be in oil , who knows, but they came apart in my system which uses ATF type F . Not a hard job to do but messy

 

[lexluther]

Thanks for the confirmation...There are about 350 hours on the tractor but it's about 15 years old. Previous owner didn't use it much, maybe 10 hours per year, i am getting closer to 100 per year. I got these really cool bolt on hooks I want to try, but the curl problem makes it difficult...thanks KennyD maybe it's time to try a new hydraulic shop if there is one.

 

[Little digger]

Ok, I am a desk jockey who is a die hard DIY guy and loves his tractor time, so go easy on me, i have searched for an answer, but there is a reason i am confused, see below.

I have a new holland tc24 and the loader bucket curl doesn't hold. It was slow at first, but now, it leaks down fairly fast, even with no load, you can watch it go fully down in less than a minute. The problem has gotten worse since i first noticed.

Tonight I decided to try and solve it one more time before calling a mechanic...the problem is the same even when the lines are disconnected at the quick disconnect fitting. Not only does it leak down, but if I grab the bucket, I can lift it and get about half way up by hand. There are no visible leaks anywhere while doing this.

Here is the confusing part...when the problem was fairly minor, I had the cylinders tested by the local hydraulics shop, they said they were in spec and didn't need rebuild...I think perhaps they got busy and didn't really test them or my problem has progressed?

With the lines disconnected it's essentially a closed system right? And no oil on the ground means it has to be the cylinder that needs rebuild right?

Thanks a million for the help!

Sounds like you have control valve problem where the H fluid bypasses the valve.

 

[kennyd]

Sounds like you have control valve problem where the H fluid bypasses the valve.

The OP wrote this:

the problem is the same even when the lines are disconnected at the quick disconnect fitting. Not only does it leak down, but if I grab the bucket, I can lift it and get about half way up by hand.

So how is the valve the problem when the lines are disconnected?

 

[JRobyn]

I agree that a better hydraulic shop is called for. Re-test and rebuild then test as necessary.

 

[lexluther]

Sounds like you have control valve problem where the H fluid bypasses the valve.

Valve was what I was worried about as it is a more difficult repair. I tested leakdown with the lines disconnected, it seemed no different than when the lines are connected. When I was lifting the bucket, the lines were connected, but I think I could hear the fluid in the cylinder if that's possible with a 5 year old boy in the shop...

 

[Rocky J]

When I rebuilt mine on the Case Loader I did not remove the hoses, I did not remove the cylinder from the loader, I removed the pin on the bucket end then the clip holding the head on the cylinder, used a piece of pipe 2 foot long through the hole the pin came out off and pulled the ram out. Remove the nut from the end slide everything off and start replacing all the rubber parts. I always take pictures of what I am doing every step so if it can go back together two different way I can look at the pictures and pick the right one and also share with someone that need a little moral support. I drove a desk for eight years and I enjoyed fixing or trying to fix things more then .