Foird 2000 tractor leaks oil at shift lever

radios

New User
I have a 65 ford 2000 that has had ongoing hyd problems. First, the hyd quit when the engine warms up. The oil gushes from the shift lever. It is a 4 cyl 4 speed with hi low.

I have removed the top plate and replaced the O rings and the seals/rings in the hydraulic cylinder.

Help.
 
If it has a 4 cylinder engine then it is a 1964 or earlier tractor. If it has a 3 cylinder engine then it's a 1965 or newer tractor.

If it is a 4 cylinder 2000, then there are lines that pass through the transmission from the hydraulic sump to the pump and back again, and it is likely that the high pressure line going from the pump back to the 3 point lift has holes in it from rust and the pump is just sucking up fluid from the hydraulic sump through the suction line and pumping it into the transmission sump via the holes in the high pressure line.
 
As Sean said. if it is a 4 cyl 2000, and it is making oil in the tranny.. check the hyds ... they are probably low due to the high pressure line perforation in the trans case bottom
 
Thank you Sean and sound guy. HOWEVER I would think there would be a visible leak in the lines. This tractor has the manifold lines that run from the pump back under the tractor to the hydraulic section and inside that is solid cast steel. There are no leaks along those lines. Maybe the O rings slipped when I put the top back on allowing oil to squirt inside? But you would think there would be leaks outside too.

The oil runs out of the transmission at the shift lever on top of the transmission. It really pours out after the engine warms and I have used it a while...then oil stops running out. I thought maybe enough pumped out to stop the flow but I am not sure about that.

The hydraulic unit bolts to the trans and they seem to have a common opening and share the oil. I used the oil for older tractors.

I like this tractor and it has plenty of power for my 5 ft bush hog. But the hyd failure is so frustrating.
 
Yes, it is a 64 4 cylinder.
This whole problem started with the hyd failure after warm up. I removed the top plate and replace the piston rings or seal and really didn't see anything wrong. But that check valve or hi pressure valve that you remove with a bolt or special puller....I didn't do that. The other over pressure valves (2) appear to have solder that would blow out if they failed and they did not.

Like I said above, I would think I would see an oil leak at the lines. I park it on concrete and there is no oil leak (other than a drop or two under the oil pan. Not nearly enough to be a problem.
 
Are you sure you know what tractor you have?

The hydraulic lines you describe sound like those used on the 1953-4 NAA tractors.

1963- (early) 65 four cylinder 2000 model tractors have an aluminum hydraulic manifold between the hydraulic pump and the front of the transmission at the bottom. Steel lines internal to the transmission connect the manifold to the hydraulic system behind the transmission. It is not uncommon for these steel lines to become perforated due to corrosion (water in oil) or freeze damage (lots of water in oil). A leaking pressure line inside the transmission will produce the symptoms that you describe. I can think of no other condition that will.

Dean
 

You are describing some very out of the ordinary things. As Dean said your exterior lines are '53-'54. you also said that your "hydraulic unit bolts to the trans" All of the four cylinders that have hydraulics have the pump mounted on the side of the motor and are driven by the camshaft. In order to get help you need to give factual information. I suggest that you go to the flat hrizontal surface on the left side of the trans, just to the rear of the starter, and write down what you have for numbers stamped there, and post them.
 
Please post some pictures of the lines going from the pump back to the hydraulics section, as well as the front area of the transmission near the pump. What you describe is not how a 4 cylinder 2000 tractor left the factory.
 
Thank you everyone for your help. Yes, I am not sure what year I have but now I am pretty sure it is a 64.
I have had the top plate off and I did not see any lines inside the transmission. It appeared to me that the hyd oil entered at the bottom front of the hyd transmission where the manifold bolts on and flowed through the casting itself, up to the top where the o rings are located. But I am not sure.

What you are saying is that there are lines INSIDE the hydraulic transmission or housing, and that these lines are compromised. Can you help me find the lines?

Here are some photos of the tractor and note that I am pointing to where the oil runs out on top of the gear transmission.
<img src=http://i18.photobucket.com/albums/b124/radios1/1-28-20131/engine_zpsahbbrclw.jpg><br>
<img src=http://i18.photobucket.com/albums/b124/radios1/1-28-20131/engine234_zpshb5i7ean.jpg><br>
<img src=http://i18.photobucket.com/albums/b124/radios1/1-28-20131/engine2_zpsaf1c1yct.jpg><br>
<img src=http://i18.photobucket.com/albums/b124/radios1/1-28-20131/engine2345_zpsoyortucd.jpg><br>
<img src=http://i18.photobucket.com/albums/b124/radios1/1-28-20131/engine23_zpskclw4ibk.jpg>
 
Well, so much for my html but you can just copy the address and post it in your url to see the pictures
 
As has already been said, the hydraulic pressure line inside the transmission has sprung a leak, usually from a rust spot or split from freezing. The hydraulic oil is being pumped into the transmission until it overflows out the shifter. The 2 steel lines carry the hydraulic oil thru the transmission, there are no ports in the casting itself. This photo is of the inside of a SOS trans case, but the lines go thru the 4 and 5 speed the same way. You'll need to pull the hyd manifold and replace the (smaller) pressure line. The larger tube is the suction line.

transhydlines.jpg


.
 
Your first and third pictures show the manifold from the pump that goes down to the front of the transmission. i do not see any external lines going back to the hydraulics section that you mentioned earlier. Where that manifold connects to the front of the transmission there are steel lines that go through the inside of the transmission, from front to back, that connect to the hydraulics section that is rear of the transmission. John Smith's picture of a transmission with all of the gears removed shows you those lines very nicely.
 
Thank you and Dean and Sean. Thanks for the picture. I can see it now. There must be lines running through the transmission. OK, if I remove the manifold (the cast line from the pump to the transmission) can I replace the internal lines from there or do I have to go into the transmission? How are the lines fastened at the hydraulic casting or how do they attach inside the hydraulic section? I am guessing I will have to remove the top plate and do something inside the hydraulic area.
You have been so helpful and the broken line is certainly the cause. I remember having a little water run out when I drained the oil the first time.
 
Those lines are not simple straight tubes. They are "stepped", and actually change diameter at various spots along their length. someone posted a drawing here a while back that shows the actual measurements. The tubes are no longer available new, but some have taken straight thick walled tube and turned them on a lathe to match the original tubes. Others have left the original tubes in place and fitted smaller diameter tubes inside of them with epoxy around the outside of the new thinner tubes to seal them in place inside the original tubes. Another option would be to find another tractor with the same transmission at a scrap yard that has usable tubes.
 
Thank you. Do you know what I will have to remove to complete the job? Will I have to go into the hydraulic section or the gearbox section or can I replace these lines from the outside? Thanks, charles
 
What I do not know is how the lines are connected. They must be connected securely and therefore there must be some screw or bolted connection inside the hydraulic end and the transmission end.]
 
(quoted from post at 09:36:47 11/28/15) What I do not know is how the lines are connected. They must be connected securely and therefore there must be some screw or bolted connection inside the hydraulic end and the transmission end.]

Charlie, Go to the thread on this forum on the front page titled "851 oil tube through trans". Someone else is getting help with the very same job.
 
(quoted from post at 09:36:47 11/28/15) What I do not know is how the lines are connected. They must be connected securely and therefore there must be some screw or bolted connection inside the hydraulic end and the transmission end.]
The lines are sandwiched between the hydro unit and the manifold to the pump. No mechanical fasteners.
They are stepped from front to rear. They must be removed from the front of the tractor. You can pull them from the front.
Or, as I did, you can remove the trans and drive them out from the rear. You will need new "O" rings for both ends.
The tubes are not available as replacements. I had a local machine shop make mine.
It is also a good time to replace the freeze plug at the back of the engine while your in there.

Joe
 
Thank you everyone for your help. I am quite sure I have the broken or fractured line in my transmission.

I have asked around and apparently this is not an easy job to replace. I will have to separate or remove the transmission entirely. The lines are pressed in. I was not thrilled about this design until someone told me there are tractors where the hyd went through the casting and if that fractures It is not repairable. At least this is repairable.....albeit sometime when it is warmer outside.

If anyone has any helpful suggestions about doing this job I would appreciate it.
Thanks again, charles
 
I cannot see what is going on. I understand the lines are stepped but if so, why can't I use the tap method described above and just remove the manifold from under the front of the transmission and pull the line out that way, without splitting the tractor? Of course, I also do not know where or how the line connects up in the hydraulic unit. There must be some sort of press fit back there, too.
 
(quoted from post at 19:30:37 11/30/15) I cannot see what is going on. I understand the lines are stepped but if so, why can't I use the tap method described above and just remove the manifold from under the front of the transmission and pull the line out that way, without splitting the tractor? Of course, I also do not know where or how the line connects up in the hydraulic unit. There must be some sort of press fit back there, too.

Radios, see my prior post.
 

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