Ford 7610 hydraulic newby

[Warrenpfo]

Would you know if there is a recommended size for the supply and return lines? And I guess if I am going to run them from the remotes now would be the time to also get the appropriate ends to fit or perhaps I try it with new lines plumber the way it is and then move to the remotes if still slow.

 

[TractorTech]

The current hoses look to be 3/8" and 1/2" would be my recommendation. I think the big problem, and you can't change this without making a new hose and going to a different source like the remotes, is that the fitting on the tractor side of the supply and return hoses are very small and that is your flow restriction.
I just noticed something on the loader that you have single acting lift rams or cylinders so you only have hydraulic power up (when you have hydraulic power).

 

[Warrenpfo]

Correct on the loader lift cylinders. It's a little frustrating as you rely on weight in the bucket to do any back scrapping but I have had a few years to get used to it and to replace the rams is not worth the cost as it really is used to move a few logs around and some buckets of soil etc. It might get used 4h a month.

 

[TractorTech]

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Correct on the loader lift cylinders. It's a little frustrating as you rely on weight in the bucket to do any back scrapping but I have had a few years to get used to it and to replace the rams is not worth the cost as it really is used to move a few logs around and some buckets of soil etc. It might get used 4h a month.

Yeah, I wasn't concerned as to the cylinders themselves, but looked at the loader valve as possibly not correct. However, your bucket works at the same speed. Strictly a flow problem

 

[Warrenpfo]

Ok bit of an update after the weekend playing with the tractor.

The rear arms do drop with a weight on them over time. After 20min I would say it has dropped a foot. That is with the aux hydralic plunger pushed in so that flow is diverted to the 3 point linkage. When the flow is diverted to the loader it still drops but that takes all night to happen.

I think it might be worth me purchasing a seal kit and replacing the lift cylinder seals??

I agree we have a low flow issue and that the hoses to the loader are confirmed 3/8 so will get some new ones made up but I suspect something else is also at play and wanted to run it past you.

No one has commented on my first post where I mentioned that I loose all hydralic flow to the loader (did not checknits the case with the 3 point but suspect it would be) when the tractor is nose up. I had a bucket of fire wood i wanted to tip and went up a bank about 15deg and could tip the bucket as the weight compressed the cylinders but could not tip it back and had to reverse back to level ground before I got hydralic flow again.

I always check the rear fluid using the dip stick at the rear but have never confirmed it's correct. Could it be low on fluid and is thete a fill plilug on the side I could use to make certain ??

Secondly if it is correct does the internal pump not have a pickup tube and could this be damaged or out of place thus not allowing fluid to flow when at an angle??

I just wonder if it's not that the pump is not getting access to the fluid that's not part of the problem?

 

[Harry in Ky]

You seem to have a lot going on here, and a lot being thrown at you. Some of which I agree with, some not so much. For one thing, while the lift cylinder piston seals might be a problem with lifting capacity or function, but hard to believe that's affecting the "not" lowering. If you decide to go into that you can see the pump and intake tubing clearly with the lift cover off. Or you can always pull the pump. You might also try an old International trick and over fill the housing by about two or three gallons any see what that does. If it helps, then yes, you may well have a pickup tube issue. As for using 3/8 hose for the loader, I've installed 3/8 hoses on any number of eight and nine GPM systems for years without issue. The right way to go is to find out what you have pump wise with a flow meter. That will tell you more than a number of people throwing guesses at you.

 

[Warrenpfo]

Without a flow meter could one perhaps overfill and then run one of the rear spool valves into an empty bucket for say 10sec to get a measurement and then do the calculations?

Surely low flow would have nothing to do with no flow at an angle?

 

[TractorTech]

@Harry in Ky as far as the hose goes, you are right, it probably would work fine. If you look at the hoses where they go into the case, the fittings are choked down even more. That would cause the restriction to flow.

I agree with the pickup tube being a possible problem and over filling would get an answer pretty quick.

@Warrenpfo, the 3pt has been that way since you got it. Do you know if it ever worked for the previous owner?
For the flow test, sure that is a simple way to measure find out if you have some or decent flow, it could just get messy quick.

 

[KWentling]

A flow test needs to be done in conjunction with a pressure test.You need to know the pump can make flow at pressure and just dumping a remote into a bucket is of limited value.

I have never been around a Ford tractor so I went to Google to find if this was an open or closed center system. Looking further I came across a post about cleaning the valves under the seat and that one of them has what sounds like a relief valve (or flow valve) built in that can be taken apart and has a gauze filter that can be plugged. It was mentioned to count the turns taken to remove it and put it back the same number of turns. That cured the low pressure/flow issues in that case. Might want to take a look at that.

 

[Warrenpfo]

Ok so it's flow under pressure that is important and so the open line into a bucket is of limited use. I did pick up a bunch of hose and some pressure guages let me check if they might do the trick.

I can't comment on the slow hydraulic 3pt as that's how it arrived.

Ill have another look for the flow/relief valve and have uploaded the manuals incase that helps, they are 660mb each.

Ford Series 10 Vol1.pdf

drive.google.com

And

Ford FSM Vol2.pdf

drive.google.com

The more I think about it the more I wonder if the assumed low flow is not due to a pickup problem? If i have no hydraulic pressure at a slight nose up angle it has to be linked to a lack of fluid and therefore poor pickup which could still cause poor pickup when level ans so might just try the open hose in a bucket test to see if there is air in the fluid ?

But sadly i will only be back up in 3 weeks time so it will have to wait.