The Ford Barn

fordv8j · 01-17-2018, 05:59 PM

need to put a seal on the pto shaft on a 8-n, can I do it without removing the bearing housing,if not will anything fall out of place inside,so it won't go back together....new to me....Thanks

rotorwrench · 01-17-2018, 07:04 PM

I don't have info on the 8N but they are similar to the later NAA and 100 series tractors that I am familiar with. On those, the shaft and cover come out as an assembly (shaft is splined on the other end) when the 4-bolts are removed. It can then be disassembled to replace parts using snap ring tools among others depending on what all needs to be replaced. You may be able to remove just the seal without pulling the housing but you might have a gusher on your hands for a bit. They recommend draining fluids before you pull anything out. I carefully drill small holes in the annulus of the seal body then use a slide hammer to pull the old seal. I don't know if it will work in your case or not.

There may be a shop manual on line some where for 8Ns but the reprint manuals aren't too bad a price.

flatheadmurre · 01-18-2018, 03:28 AM

Sponsored Links (Register now to hide all advertisements)

You can replace the seal but not the bearing without removing the setup.
If everything is as it should the shaft assembly should slide right out and its easier to work at and you can check the bearing with it out.
If it doesn´t slide out the end of the shaft might be a bit riveted on the end...some mild force is ok but when it need major force you have a chance of destroing pump and bushings if i remember right.
Agree with rotorwrench on that a manual is a good investment.

01-17-2018, 05:59 PM	#1
fordv8j Senior Member Join Date: Jan 2015 Posts: 392	8-n pto oil seal need to put a seal on the pto shaft on a 8-n, can I do it without removing the bearing housing,if not will anything fall out of place inside,so it won't go back together....new to me....Thanks

01-17-2018, 07:04 PM	#2
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 17,411	Re: 8-n pto oil seal I don't have info on the 8N but they are similar to the later NAA and 100 series tractors that I am familiar with. On those, the shaft and cover come out as an assembly (shaft is splined on the other end) when the 4-bolts are removed. It can then be disassembled to replace parts using snap ring tools among others depending on what all needs to be replaced. You may be able to remove just the seal without pulling the housing but you might have a gusher on your hands for a bit. They recommend draining fluids before you pull anything out. I carefully drill small holes in the annulus of the seal body then use a slide hammer to pull the old seal. I don't know if it will work in your case or not. There may be a shop manual on line some where for 8Ns but the reprint manuals aren't too bad a price. Last edited by rotorwrench; 01-18-2018 at 10:37 AM.

01-18-2018, 03:28 AM	#3
flatheadmurre Senior Member Join Date: Apr 2015 Location: Sweden Posts: 3,045	Re: 8-n pto oil seal Sponsored Links (Register now to hide all advertisements) You can replace the seal but not the bearing without removing the setup. If everything is as it should the shaft assembly should slide right out and its easier to work at and you can check the bearing with it out. If it doesn´t slide out the end of the shaft might be a bit riveted on the end...some mild force is ok but when it need major force you have a chance of destroing pump and bushings if i remember right. Agree with rotorwrench on that a manual is a good investment.