How to fault find and repair the 3PL Arms on a Fordson Major that drop when in the raised position. To reseat the Non Return Valve use a 5/8in ball bearing as mentioned in the video.
Recently rebuilt mine from a similar issue. The cap that held the piston main seal in had come loose, and there was no seal left, and a mangled chunk of steel floating around inside. Surprisingly it was still lifting the arms is that state!
Most tractor dealership should be able to provide a specific Fordson O ring kit or, like me, have a search on Ebay for the hydraulic seal kit and there could be some available.
I have a mates Fordson Power Major here now with a similar problem but arms stay up fine. We test lifted an alloy V6 engine and tgat, was, OK but he says it won't lift like it used to and fails to lift bigger weights. I'll try reseating the non return valve but I'd have thought the arms would drop too but they stay up better than most tractors I've seen including my own Massey 35....any clues?
Do you have a part number for the cover plate gasket at 0:18? The old one came apart when I took the cover off and I am trying to find a replcaement. Mine has the aux control valve instead of just the plate if it make a difference.
The same gasket works for both the plate and auxiliary hydraulic control. I have never been able to find one off the shelf unfortunately so I make my own with 0.8mm gasket paper. I have another video on how I make my gaskets. Sorry I couldn't help more.
@@fixingfordsonsaustralia6632 I found an image of the gasket and have it all back together. It didnt want to lift a bush hog at first but now that its snapped cold it will lift. I am still having a problem with the arms dropping about 1 in per min. I hooked up a gauge and it will hit 2200psi before the arms hit the top and the pressure will drop to 500psi. I replaced all gaskets and oring in the valve body, pump, and piston? The guy filled it with Renew Tran/Hyd Fluid for Ford Tractos from a local farm supply store.
The O ring set I bought is universal for all Majors and the replacement of the ram and cylinder seals will be the same. The hydraulic controller may be different but the principle is the same, just identify where your relief valve is and give it a clean.
Moisture causes this to occur, with older cast iron machines it is very difficult to keep moisture out of the oil chambers. It's not a huge concern but worth changing out after a while.
Hey champ have you had the issue were lever doesnt go back to rest position (in the center) having issues with not being able to hold 3pt in any position, and soon as u clutch it drops .
I've never had that issue but it may be from a faulty seal not holding pressure. If the 3pl arms are moving as normal is shouldn't be a pump or hydraulic flow issue.
Saves me having to clean them again when I pull them apart and oil leaks everywhere. Most times, after I make a video I pull it apart and clean it before reassembly.
