How to replace pinion seal in your Ford 9" differential

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3 жыл бұрын

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Things I used in this video. As an Amazon Associate I earn from qualifying purchases
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Today at Alf's Mustang Garage we replace a leaky pinion seal on a Ford 9" differential. This procedure is the same for a Ford 8" Differential. This video only covers the removal and replacement of the pinion seal and not the recommended procedure to re-set the pinion bearing pre-load. That video can be watched here ------- • How to set your pinion...
Alf's Mustang Garage is not responsible for any mechanical or technical error that you may encounter when working on your own car. You are responsible for your own quality control and your own proper repairs.

Пікірлер: 52

@AlfsMustangGarage 3 жыл бұрын

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@joealbert7773 Жыл бұрын

In my opinion, you made the job harder than it needs to be. Leave they yoke on the pinion and pull the whole assembly. Clamp the yoke in a vise and remove the pinion nut. Now you have the pinion and the housing out of the car. Slide out the pinion, lay the housing flat on a bench with the outer bearing setting in it's race. Install the new seal. Put the pinion gear back in with a new crush sleeve and set the pinion pre-load. You can do this with the yoke clamped back in that vise. You didn't mention it, but the shims behind this housing are very important, they set pinion depth. Don't damage or lose any of them. I did a whole lot of these when I worked at a Ford garage in the early 70's.

@joealbert7773 Жыл бұрын

I just watched your pinion bearing pre-load video. That's the way to set it up and change a seal. Back in the 70's Ford had a problem with the carrier assembly. The metal was soft and the axle side gears would get lose in the housing and rattle when coming up to a stop sign. We changed a lot of them out which meant swapping the ring gear and axle pinions to the new housing. When you do a whole lot of 9 in rears you get pretty fast as setting them up.

@AlfsMustangGarage Жыл бұрын

Oh ya I was just about to apologize for how I formatted those videos. I thought it would be better to break it up into 2 separate videos. Now I realize people are more than capable of fast forwarding to see the parts they want and it's okay to make one video that's longer. I bet you have a wealth of knowledge being right in the middle of that during that time. I must have done something right if you said I did it correctly 🤣 I have since made a separate video that has the who process start to finish. I've gotten a little better at filming, explaining and editing these. Check this one out and let me know what you think unless that's the one you already watched. Either way, thanks for your comments kzfaq.info/get/bejne/aqeZhc-SuKvce3U.html

@Terminxman 8 ай бұрын

Yeah I really don't get this video as to set the preload you have to have the carrier out anyway. It's kind of misleading to someone who may not realize that.

@AlfsMustangGarage 8 ай бұрын

There is nothing misleading. All of that is explained. The pinion needs to be removed not the carrier to set pre-load.

@dewholdingsllc1050 Жыл бұрын

Thanks for the old classic car content.

@AlfsMustangGarage Жыл бұрын

You're very welcome

@dewholdingsllc1050 Жыл бұрын

@@AlfsMustangGarage have you done a video on how to ID Ford rear end? 8 vs 9”, I was looking for the parts you listed, do they use the same parts?

@AlfsMustangGarage Жыл бұрын

I haven't done a video on that yet. The parts are not the same. Similar but larger on the 9".

@feelvivek 3 ай бұрын

Hi Alf, thanks a lot for this awesome video. I have a question. Does the crush sleeve come out without removing the pinion housing ?

@GreatDarkKnight 2 жыл бұрын

Do you happen to know the torque spec for those first nuts you pulled off?

@brackcycle9056 3 ай бұрын

So when you loosen the NUT, you lock the road wheel & leaver/ hammer/impact drive against the gear teeth ? Thats a 200Ft/lb bolt , surely you will smash up the surface of the gears? I have seen other diff where people leave the wheels free , bolt a bar on the diff flange/ U-J & lever against that , are they being over cautious ? Your other vid you remove the pinion carrier & work on the bench , better . Also is it worth marking the UJ before dismantelling to get the prop back the same way round ?

@mrblanche Жыл бұрын

This is just me, but I keep a good screwdriver around that I have sharpened to a knife edge for this kind of purpose.

@jaredtankersley4767 3 жыл бұрын

When completing this job should I go ahead replace the 3rd member gasket as well? I have a leak in that area but I am not completely sure where it is coming from.

@AlfsMustangGarage 3 жыл бұрын

Ya that wouldn't hurt. There is the pinion seal, the pinion support O-ring, and the third member gasket. Here is the video on the third member gasket kzfaq.info/get/bejne/qaqIqreG38Cnpac.html Hopefully that helps.

@gatorunleashed275 3 жыл бұрын

I have a 71 Nova with this seal leaking, the local auto store is closed today however. Also my yoke is worn, two rings where the seal rides I think I'm gonna replace it also. Problem is I have no ideal what my for 9inch came out of. It's posi trac and has a N on the housing. Seems to be a 3:55 gear ratio. Are these common or all different?

@AlfsMustangGarage 3 жыл бұрын

So there were a lot of different yoke options on ford 9s. It might be best to take measurements and try to find a replacement online or if you have a local machine shop that does driveshaft could easily find a replacement. Or if you have someone local who just specializes in driveshafts. The original equipment u-joint size was either 1310 or 1330 series. The 1310 series is commonly known as the "small" u-joint and the 1330 series is known as the "large" u-joint. Both of these can be found on the Ford 9 inch rears. The original equipment hardware used to hold the u-joint into the pinion yoke was comprised of two 5/16 inch u-bolts. You should note that the original 1310 and 1330 Ford 9 inch pinion yokes can be either 4 inches or 5 inches tall. They also can be designed for the 1 1/16th or the 1 1/8 inch (Big Cap) u-joint bearing cap diameter. Hope that helps 👍

@gatorunleashed275 3 жыл бұрын

@@AlfsMustangGarage Yes thank you so much, great info and channel.

@AlfsMustangGarage 3 жыл бұрын

You're welcome! Thanks for subscribing and commenting! Those things really do help me so I can keep making content 👍

@scottlevy3274 2 жыл бұрын

does the pinion teeth have to line up a certain way with the ring gear when putting it back in? do you have to mark it before removing it? or can you just shove it back in any old way?

@AlfsMustangGarage 2 жыл бұрын

The pinion can go back in at any position. Those gears are in mesh with each other and will eventually make contact with every possible position as they turn. The pinion support only goes in one possible way with it's bolt pattern. You'll just want to make sure the same shim(s) go back into position that were removed when removing the pinion support.

@scottlevy3274 2 жыл бұрын

@@AlfsMustangGarage thank you! your videos has helped me so much during my restoration.

@AlfsMustangGarage 2 жыл бұрын

You're very welcome! Glad I could help.

@danbegay3646 2 жыл бұрын

should use a block of wood or a socket of correct diameter.

@jacobwineteer 2 ай бұрын

Pinion yoke, i cant extract a sheared off bolt outta mine, so i figured id just buy a new one, got the nut off no problem, but now i cant get the damn yoke off. Needs a puller huh? Dangit... this damn ford is driving me nuts. 2000 f350...

@sweettony9359 3 ай бұрын

My guy, I couldnt help but notice the car shaking and wiggling around as you were working on it. Is it up on 2x4's or something? Good for you but I dont think I could work under a car doing the jack stand shuffle.

@AlfsMustangGarage 3 ай бұрын

Lol, that's actually the camera. I had it stretched on a bungie cord to get this filmed.

@fabianmunoz7300 3 ай бұрын

Can you update pinion seal link for 9 inch please doesn’t seem to work :/

@AlfsMustangGarage 3 ай бұрын

Thank you for bringing this to my attention. Looks like there is no one selling these on Amazon at the moment as to why the link doesn't work. I will get some sent to Amazon and re-activate the link.

@montecarlo6.0turbo 3 жыл бұрын

Did u use a new crash sleeve

@AlfsMustangGarage 3 жыл бұрын

Yes absolutely! I actually did a seperate video on that to demonstrate how to set the pinion bearing pre-load.

@montecarlo6.0turbo 3 жыл бұрын

@@AlfsMustangGarage where is crush sleeve located

@AlfsMustangGarage 3 жыл бұрын

Check out this video. This one shows you the crust sleeve and how to set the pinion bearing pre-load kzfaq.info/get/bejne/bMuAYLugsLK5g2Q.html

@Tyscrat 10 ай бұрын

I did this job, it fixed the leak. But now after driving awhile fluid leaks out of the yoke, from the input shaft around the splines. What is this reasoning?

@myfriendpete 2 жыл бұрын

is that the camera swinging or the whole vehicle...

@AlfsMustangGarage 2 жыл бұрын

Camera is swinging

@chadhickey9942 Жыл бұрын

I came to these comments to see if someone else noticed that lol. I was like "no way i'd be standing under there with it moving that much"

@faronf2006 Жыл бұрын

I would have put that shield on last to make it easier to drive in the pinion seal .

@moodondie 3 жыл бұрын

Can I pull the pinion support and replace the gasket without removing the yoke?

@AlfsMustangGarage 3 жыл бұрын

You can replace the o-ring around the pinion support. But in order to replace the pinion seal, the yoke must be removed.

@moodondie 3 жыл бұрын

@@AlfsMustangGarage My pinion support o-ring is definitely leaking, but the yoke seal is not...so you are saying that I can remove the bolts on the support and pull the entire assembly leaving the yoke bolted on, correct? Just don't want to make additional work for myself if not necessary. Thanks for the speedy reply too!

@AlfsMustangGarage 3 жыл бұрын

Yes absolutely. I think its just the 5 bolts and the pinion pulls out. Now keep in mind, there is going to be a shim or multiple shims behind that pinion support. Just make sure those go back on and it should be easy breezy.

@moodondie 3 жыл бұрын

@@AlfsMustangGarage Thanks, appreciate it, and great video.

@AlfsMustangGarage 3 жыл бұрын

You're very welcome