brigby

New User
I have no idea what year of Ford 3000 tractor I have but I just added a dual rear auxiliary hydraulic hookup for a small baler and conditioner mower. When I apply pressure to the system, it blows the gasket in the hydraulic pump at the end cap. How do I reduce the pressure or can I? Any ideas of what I can do to fix the issue, other than buy a new tractor thanks for your help.
 
IF the original does not have a problem and just the new one does. I'm going to guess there is no relief valve in that circuit. Only place for a dead headed flow to go is either through a relief valve or blow a seal/gasket.
 

Ford tractors have a pressure relief valve to protect the system from over pressure
The valve could be stuck or the gasket on the pump was ready to blow out
Creating a pressure spike like that sounds like something isn t plumbed correctly
 
Hello brigby welcome to YT! I am not a big Ford guy
but know a fair bit about hydraulics. Certainly sounds
to me like you have not connected the systems you
added correctly, photos would be a big help on this.
Here is a short rundown of picture posting and I
believe the combined file size limit is 7mb. Pictures
post through the ..Choose files.. button just below
where it says ..Upload Photos/Videos.. down lower in
the ..New post and reply windows, see picture.
Clicking that will give you a choice to select the file or
folder the pictures are stored in your PC or phone.
They cannot be pasted into the text area as a file.

cvphoto152005.jpg
 
(quoted from post at 21:43:02 04/09/23) I have no idea what year of Ford 3000 tractor I have but I just added a dual rear auxiliary hydraulic hookup for a small baler and conditioner mower. When I apply pressure to the system, it blows the gasket in the hydraulic pump at the end cap. How do I reduce the pressure or can I? Any ideas of what I can do to fix the issue, other than buy a new tractor thanks for your help.
This post was edited by brigby on 04/10/2023 at 10:15 am.
 
If you are trying to post a picture I may have given you
too large of a photo file size as the max. Try only one
photo per reply, if that works try two on the next reply.
 
You need to get a copy of the I&T FO-31 Service Manual for the 3000 3 & 4 cylinder models, diesels included. It has a chapter on the hydraulics that should help you.



Tim Daley(MI)
 
(quoted from post at 10:08:46 04/10/23)
(quoted from post at 21:43:02 04/09/23) I have no idea what year of Ford 3000 tractor I have but I just added a dual rear auxiliary hydraulic hookup for a small baler and conditioner mower. When I apply pressure to the system, it blows the gasket in the hydraulic pump at the end cap. How do I reduce the pressure or can I? Any ideas of what I can do to fix the issue, other than buy a new tractor thanks for your help.

This post was edited by brigby on 04/10/2023 at 10:15 am.
mvphoto104496.jpg
 
This tractor never came with an auxiliary hookup. I removed a plate and installed the controls there. It s a kit that yesterday s tractor sells, although I didn t buy it from them. The tractor has a stock pressure relief valve buried in the transmission somewhere but I m not sure if not working or if it doesn t control the auxiliaries I ve added on. The pump was rebuilt just before I added this kit so it doesn t have old worn out parts.
 
Does it leak when you DONT use the hydraulic levers...
or
Does it leak ONLY when you have one of the levers engaged??

Suspect your hydraulic pump pressure relief valve is stuck or set too high. This valve is on the BOTTOM of the hyd section, very near where the pressure line (the smaller line) from the pump goes into the housing. You must drain all the fluid in this section to remove the pressure relief valve IIRC. This valve should start to open around 2100 lbs if you have a gauge on one of the hydraulic fittings and the engine is reved up to 1900 rpms.. and the correct lever is operated.
 
(quoted from post at 15:09:27 04/11/23) Does it leak when you DONT use the hydraulic levers...
or
Does it leak ONLY when you have one of the levers engaged??

Suspect your hydraulic pump pressure relief valve is stuck or set too high. This valve is on the BOTTOM of the hyd section, very near where the pressure line (the smaller line) from the pump goes into the housing. You must drain all the fluid in this section to remove the pressure relief valve IIRC. This valve should start to open around 2100 lbs if you have a gauge on one of the hydraulic fittings and the engine is reved up to 1900 rpms.. and the correct lever is operated.

The pump leaks all the time now. It didn t leak at all until I put pressure to it. I tested the pressure at the connections of the new auxiliaries and they go beyond 3000 psi. So maybe just a new pressure relief valve and see what happened? I would rather not rebuild the pump 5 times. U guys are awesome, thanks!
 
As for the year model
That hand stamped 1F2 tells me the lift top was assembled June 2, 1971
The tractor would have been assembled a short time after that date
mvphoto104574.jpg



This post was edited by Destroked 450 on 04/12/2023 at 07:15 am.
 

As for the year model
That hand stamped 1F2 tells me the lift top was assembled June 2, 1971
The tractor would have been assembled a short time after that date
 
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