Jubilee with Functioning Lift But Unable to Lift

[Maknwine]

As the title says, my dad's Jubilee's lift works up and down with the lever as it should, no shaking stopping or hesitations. However, I only have a draw bar and welded receiver hitch on the 3 pt and that's about all it can raise. If I hop on the the drawbar attachment, it can't lift my paltry 225lbs(ok, 230).
As mentioned in previous post I think on this machine, he bought it at an auction, drove it to my house which was right down the street from auction and parked it. Life happened and he just didn't get back to it to work it over and I'm trying to help out.
Well, the hydraulic sump was about 2 gallons overfilled with fluid and it had a coffee with creamer appearance...not like a frothy coolant in oil mixture appearance just like coffee with creamer is best I can do(see first pic).

Drained it and refilled to correct level on the stick with TSC Traveller premium Hydro fluid. From what I've found online it takes 8qts for the Hydraulics on the Jubilee and that's what I did at first. It barely registered on bottom of dipstick. Started it ran it and worked lever up/down a few times, lift was shaky and hesitant. Shut off let it cool down a little and settle, fluid still barely showed on stick. So I had to put more fluid in to get it up to the level and not sure right now how much but it might even be another 2-4 qts. Anyway, after topping up, the lift doesn't shake or hesitate but still will not lift my weight. So, I'll post some pics of the top plate and pump etc as I think this has a setup on the top plate this is a little more than standard and if I'm correct it has an extra handle on the PTO lever side that is an extra feature.

 

[Maknwine]

Here's some pics of the hydraulics area from the right side and top.

 

[Maknwine]

Finally, the left side. Anyway, my thinking is that with the lift functioning up and down as it should that the problem is not in the top plate but with the pump itself. It has to have prime since it moves...correct? I have not run the tractor with the side cover off to see if any leaks are happening from the top plate. Unfortunately I dont have a book on this and I know my 8n books are not going to help either. I'm hoping someone on the board has had the same symptons and had a solution before I start removing bolts and nuts. thanks Tom

 

[EdGooding]

Here's a free service manual that you can download: https://www.ntractorclub.com/manuals/service-troubleshooting/I&T FO-19 Shop Service Manual for Model NAA.pdf

Owner's manual is here: https://www.ntractorclub.com/manuals/tractors/Ford Tractor Owner's Manual, Model NAA.pdf

The extra lever is an accessory to give the NAA live PTO. Owner's manual for it here: Manuals Forum - Expanded Thread Page

The hydraulic fluid was contaminated with water, thus the color.

 

[Maknwine]

Here's a free service manual that you can download: https://www.ntractorclub.com/manuals/service-troubleshooting/I&T FO-19 Shop Service Manual for Model NAA.pdf

Owner's manual is here: https://www.ntractorclub.com/manuals/tractors/Ford Tractor Owner's Manual, Model NAA.pdf

The extra lever is an accessory to give the NAA live PTO. Owner's manual for it here: Manuals Forum - Expanded Thread Page

The hydraulic fluid was contaminated with water, thus the color.

Thanks for posting all that @EdGooding

 

[John0829]

How fast does it leak down, if you raise the arms and stand on them with the engine off does it do they stay in place or drop? My first guess would be the packing in the lift cylinder is shot and leaking.

 

[Maknwine]

The lift arms wont drop with me on them engine off, even trying to bounce a little they seem pretty resistant to dropping down any. Overnight, they will leak down with just the drawbar on it.
Thanks for replying.
tom