1953 ford jubilee 3 point hitch not working

[rdjinny]

The top plate has an auxiliary hookup and when the tractor was running I pushed in on the line connections and hydraulic fluid started flowing out.
The lift did work but stopped working completely, that’s why I overhauled it

 

[rdjinny]

The top plate has an auxiliary hookup and when the tractor was running I pushed in on the line connections and hydraulic fluid started flowing out.
The lift did work but stopped working completely, that’s why I overhauled it

I guess I’m going to take the top lid off and go through it again I’m really stumped.

 

[JMOR]

like this? If yes, that "test port" should have pressure only during call for lift or if load is lifted and being held up by piston. If flow there, it means enough pressure to open check valve. Do I remember that you put a gauge here and saw no pressure?

 

[JMOR]

in your 1898.mov, what is the bubbling fwd of overpressure relief at approximately where pump return/suction is located???? Where is that flow coming from? Casting isn't broken toward front, just past relief valve , is it?

 

[rdjinny]

View attachment 108935
like this? If yes, that "test port" should have pressure only during call for lift or if load is lifted and being held up by piston. If flow there, it means enough pressure to open check valve. Do I remember that you put a gauge here and saw no pressure?
View attachment 108937

This is what I have, I did before removed this and installed a different plate and yes no pressure was seen, so thinking it might be plugged I put the original one back on.
I’ve removed everything that I removed before and honestly don’t see anything wrong with the item, think the cylinder itself might have an obstruction?

 

[rdjinny]

in your 1898.mov, what is the bubbling fwd of overpressure relief at approximately where pump return/suction is located???? Where is that flow coming from? Casting isn't broken toward front, just past relief valve , is it?

I believe that’s the return from the piston pump

 

[rdjinny]

If casting is cracked wouldn’t it be leaking onto the floor? I thought originally that the supply tube might’ve cracked but I didn’t see anything

 

[JMOR]

This turbulence is what is worrying me. Could the casting be broken or cracked in the raised part where relief valve is located and letting flow shoot forward to wall resulting in turbulence at the point circled?

 

[rdjinny]

This turbulence is what is worrying me. Could the casting be broken or cracked in the raised part where relief valve is located and letting flow shoot forward to wall resulting in turbulence at the point circled?
View attachment 108955

I’ll have to drain the fluid out and see if I can find anything tomorrow I’m getting frustrated

 

[rdjinny]

I’ll have to drain the fluid out and see if I can find anything tomorrow I’m getting frustrated

The area you circled is definitely the supply return, that’s where the back pressure tube was originally

 

[JMOR]

The area you circled is definitely the supply return, that’s where the back pressure tube was originally

The "return", i.e. suction of pump should not be 'outputting' anything.

 

[rdjinny]

The "return", i.e. suction of pump should not be 'outputting' anything.

You have a supply and return line coming off the pump, doesn’t the return go back into the housing, there’s an opening where the return line goes into the housing to recirculate back out and back in

 

[JMOR]

The pump has a input, that is a suction. And it has an output, the pressure line. One sucks , the other flows out. The suction should never be burping anything back out.

 

[rdjinny]

It’s not the suction it’s the output line that’s at the opening near the relief valve are towards the front

 

[JMOR]

Sounds like you have the lines reversed.

 

[rdjinny]

Sounds like you have the lines reversed.

Impossible to get lines reversed

 

[JMOR]

Look at dwg “JMORs idea….” The green line is from hole in floor of reservoir, just fwd of overpressure valve. It is a one way suction path, sucking fluid from sump and into pump. It leaves pump via yellow line, under pressure, along this one way path to-the over pressure valve and up vertical tube to to cover. Think of pump like a fan. Pulls air in one side and blows it out the other…..except it is fluid in case of pump.
Check valves in pump prevent it from pushing fluid back out the suction line.

 

[JMOR]

I think the word “return “ is confusing matters. Let's just use suction and discharge

 

[Gene in Mi]

I was using the hose off the piston pump bleeding it of air, is that what you’re saying?
The plug is installed and same results.
I removed the gauge and started tractor and no fluid was present?
I removed side cover and as you cn see the movement, I stuck my hand inside and there was fluid coming from the system relief valve circled in pic is that normal or does it need replaced?
Thanks
View attachment 108269

View attachment 108269

You removed the gage and no fluid was present at the test port? You need to find out why.

 

[JMOR]

You removed the gage and no fluid was present at the test port? You need to find out why.

We are working that, slowly but, working it.