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1953 Jubilee - Lift arms 'jump'


 
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The General
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PostPosted: Fri Feb 14, 2020 8:51 am    Post subject: 1953 Jubilee - Lift arms 'jump' Reply to specific post Reply with quote

I'm sure this has been answered 1000 times before, but I'm new to the forum, so please forgive me.

My 1953 Ford Golden Jubilee Lift Arms will 'bounce'. What I mean by that is: They will lift and lower fine, but while trying to hold a heavy object (like the bush hog), they will sag some, then 'jump/bounce' back to the desired position. At the rear of the bush hog, it will jump about 2 inches....

I just did a cleanout/repair of the Hydraulic cylinder (new gaskets, O-rings, cleaned it out) and it still does it. New gaskets on lid cover too. There's really not a lot of parts that can be changed...

I still need to peak inside the inspection ports while holding the load to see if its leaking fluid anywhere, but I'm sure that this is a 'common' problem and that it's been solved by many members here before. Even if it is leaking inside, I'm not sure what to change next!!

Has anyone solved this yet and if so, what was the cure?

Thanks in advance for the help!!

-Mike
 
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Jim L WA
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PostPosted: Fri Feb 14, 2020 10:31 am    Post subject: Re: 1953 Jubilee - Lift arms 'jump' Reply to specific post Reply with quote

You said, I still need to peak inside the inspection ports while holding the load to see if its leaking fluid anywhere..... Yes you do. Let us know what you see.
 
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Bern
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PostPosted: Fri Feb 14, 2020 4:46 pm    Post subject: Re: 1953 Jubilee - Lift arms 'jump' Reply to specific post Reply with quote

The slang term for that action is "hiccups". The factory term for that is "excessive corrections".
 
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PostPosted: Sat Feb 15, 2020 5:46 am    Post subject: Re: 1953 Jubilee - Lift arms 'jump' Reply to specific post Reply with quote

Thanks!! I did a quick search on 'Hiccup' and the forum lights up like a pinball machine!

I'll do my homework and see what I discover...

Thanks again for the assist.

-Mike
 
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OakhamMike
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PostPosted: Sat Feb 15, 2020 10:00 pm    Post subject: Re: 1953 Jubilee - Lift arms 'jump' Reply to specific post Reply with quote

My 1953 did the same thing. The lift cylinder safety valve was the cause. Unfortunately they are unique to 1953 and 1954,leaving us at the mercy of the market. I think I was whacked $285 for what amounts to a solder sealed check valve by a north east Ford/New Holland dealer. If you remove the PTO shift cover, start the tractor with an implement on in the lifted position, you'll probably see fluid pissing out of the Y shaped end cap of the lift cylinder safety valve. I've wondered if I could have put a 1/4" or 3/8" NPT pipe plug in to cure the leak,I forgot the size thread, but the worst thing that would happen if you overloaded the system would be a blown lift cylinder O ring, right? It bites that the lift cylinder safety valve for the 8N is about $26 and the hundred series Fords is not much more. Hashtag, still feeling abused.
 
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PostPosted: Sun Feb 16, 2020 7:16 am    Post subject: Re: 1953 Jubilee - Lift arms 'jump' Reply to specific post Reply with quote

Question - When I look through the websites and even catalogues (like Steiner Tractor Parts) they quote the SAME safety valve for BOTH tractors (8N/9N, 2N and the NAA, and Jubilee)

The NAA original part number is NAA984F. Everyone says that the 8N638 will work too.

Am I missing something ??

Plus, there seems to be multiple-looking versions of the 8N638, but again, folks state that it will work too...

Comments?

-Mik
 
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