Have the 8n apart waiting for some parts to R&R my lift cylinder. I replaced the cam pin and adjusted the linkage with the Zane jig. I am upgrading to the NAA piston. My question is what is the rule of thumb for scratches in the lift cylinder? Mine has some but what is considered too bad?
lift cylinder rebuild
CJN8
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Have the 8n apart waiting for some parts to R&R my lift cylinder. I replaced the cam pin and adjusted the linkage with the Zane jig. I am upgrading to the NAA piston. My question is what is the rule of thumb for scratches in the lift cylinder? Mine has some but what is considered too bad?
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If you can feel them with your fingernail, time for a hone or a new barrell.....Mike
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Might want to consider the CNH O-ring too. It's reportedly beefier than the aftermarket ones.
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6,327 Posts
Good catch, I had forgot about that. :thThumbsU
I have been doing some additional research and it appears the o-ring and backup o-ring are a standard configuration avaialble at McMaster Carr, Grainger, and MSC (AS568A-330). You have to buy 50 at a time but they are availalble there none the less. If the CNH dealer near my work does not have the good backup o-ring I will just order from one of the distributors above. Thanks for the help, Nate.
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46 Posts
You can probably get 50 cheaper than what I paid for one at the CNH dealer it cost $18.
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46 Posts
Have you installed it ? I was just wondering if it was the right part.
i am waiting for the new barrel and the piston to come in. I did take the new backup o-ring and fit it to the old barrel and it fits perfectly. I will let you know how it goes together once i get all the parts. I have 49 more so if anyone needs one or two let me know. 
I just got everything back together this evening. Everything worked great, the backup orings that I got at McMaster Carr were the correct parts. Much better than the leather one. I have 49 left so if anyone needs one or two let me know. The lift operates very strong once again, zanes jig worked great. Its nice to have a fully functional hydraulic system again. Thanks for all the help. Nate
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46 Posts
Thanks for the feedback always nice to know how things work out it could help someone else out. Ain't nice to have a three point that works right?
Nate, where did you get your new hydraulic cylinder from? I bought one and it won't allow the cover to fit the transfercase. People speak about grinding them I would rather just buy one that fits -- Thank you.
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10,955 Posts
Hi, and welcome to MTF!
This thread is over 11 years old and CJN8 hasn't been on here since 2014, so I don't think that he'll see your question or answer it. You might try contacting the people at the "Just 8N's" web site (Redbelly Tractors - Restorations | Just8N's). They have a good reputation for having correct parts for the N series tractors and they will answer your questions.
This thread is over 11 years old and CJN8 hasn't been on here since 2014, so I don't think that he'll see your question or answer it. You might try contacting the people at the "Just 8N's" web site (Redbelly Tractors - Restorations | Just8N's). They have a good reputation for having correct parts for the N series tractors and they will answer your questions.
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