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How to replace your axle seal - 1966 Mustang - 8" Differential 

Alf's Mustang Garage
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Axle Flange Gasket (2 per side required) amzn.to/3wEkkdw
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Slide hammer axle puller kit amzn.to/3c1SQrL
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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.
Today at Alf's Mustang Garage we show you start to finish on how to remove and replace your axle shaft seals. This procedure would be the same for the 7.25" axles, 8" axles, or 9" axles.

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22 сен 2022

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Комментарии : 118   
@coldsweat49
@coldsweat49 2 месяца назад
Very helpful. Working on my wife's 1960 Thunderbird. doing all this in prep for the Disc brakes on all wheels. :-)
@AlfsMustangGarage
@AlfsMustangGarage 2 месяца назад
Very cool, glad you found it helpful!
@sonnycrocker2884
@sonnycrocker2884 Год назад
Very good video with good information. Currently working on a 1966 mustang restoration project with a straight 6 under the hood.
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Oh awesome! I wish I had a good inline six for a daily. One of these days.
@rpric001
@rpric001 Год назад
This is exactly what I have. Changed the wheel cylinder. Still drips. I had doubts it was the cylinder but the internet experts consistently thought that was it. Glad you posted this and mentioned it for my sanity.
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Oh nice. Glad I could help out. Ya you got to watch out for those experts 🤣
@wayneduprez4072
@wayneduprez4072 4 месяца назад
I was driving my 641/2 Mustang that I've owned since 1973. It has 85,000 miles. The rear area was making noise that I heard while driving next to a concrete lane divider. I thought it was the brakes, but it wasn't. Your video has given me the confidence to pull the axle, and have the bearing replaced. Of course I'll also change the seal and paper gaskets. THANK YOU SO MUCH!!!!! Great video!!!!!
@AlfsMustangGarage
@AlfsMustangGarage 4 месяца назад
Oh awesome! Glad I could help!
@gregoryg8301
@gregoryg8301 Год назад
Just got a 66 from auction w/ a 302, needs a lot of love but I can't wait! thanks for the informative videos
@AlfsMustangGarage
@AlfsMustangGarage Год назад
That sounds awesome! You're very welcome.
@jeffreyhohendorf3606
@jeffreyhohendorf3606 Год назад
Never watched your videos before, but I will say you are very informative and thorough, thanks for listing the part numbers and torque specs....
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Oh cool thank you!
@user-ex6nr5rq7v
@user-ex6nr5rq7v 10 месяцев назад
Excellent video. I have this job to do on my '66 Ranchero (289 A-code), and now it will be a snap.
@AlfsMustangGarage
@AlfsMustangGarage 10 месяцев назад
Awesome thank you!
@haroldsmith6451
@haroldsmith6451 Год назад
Love the channel!! Content is awesome. I've owned my 1966 C code coupe 4 speed since 2006. Keep up the great work. I have a few older videos of the 66 on RU-vid.
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Awesome thanks Harold! I'll check out your videos of your car!
@brucemadrid2386
@brucemadrid2386 8 месяцев назад
Great video. Easy to follow. Even though I'm replacing the rear axle seal on my 1953 F100 truck with a Dana 44, the procedure is the same. Thank you.
@AlfsMustangGarage
@AlfsMustangGarage 8 месяцев назад
Oh awesome! Glad it was helpful.
@alliepold803
@alliepold803 Год назад
Just what I was looking for. Need to replace the seal in my 35 Chevy hot rod
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Oh awesome, glad I could help.
@kilowhiskyforge4337
@kilowhiskyforge4337 Год назад
Oh yeah I got exactly this problem, perfect timing brotha, I wanted to know if I could to this myself on the side of the road and it seems I could, with the right tools lol
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Oh ya it's not too bad.
@Jerad3pdx
@Jerad3pdx 10 месяцев назад
Thank you this video and the video on replacing the third member were super helpful. I got a 52’ ford f1 hot rod build and I’m doing a new third member installation tomorrow and disc brake conversion. Thanks for the helpful info
@AlfsMustangGarage
@AlfsMustangGarage 10 месяцев назад
That sounds like an awesome project! Glad these videos were helpful!
@bradleysmart9
@bradleysmart9 Год назад
Love it brother. I’ve seen many videos where they’re removing stuff from the rear end to get the axles out. I have a 93 mustang gt 5.0 and your attention to detail helps tremendously. Appreciate you putting this video together. It’ll be my first rear axle seal replacement. Passenger side is leaking gear oil. So i appreciate it.
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Oh cool thank you. I'm assuming you have the 8.8 differential? If that is the case, those axles don't come out the same way as the 8". They have retainer clips inside so you have to pull the cover off to access.
@fasteddy
@fasteddy 11 месяцев назад
Liked the seal puller
@bikeclochard
@bikeclochard Год назад
Hey Alf, thanks for the detailed video and the tool links, helpful as always!
@AlfsMustangGarage
@AlfsMustangGarage Год назад
You're very welcome!
@Craspan
@Craspan Год назад
👍
@AlfsMustangGarage
@AlfsMustangGarage Год назад
👍
@jreyes8614
@jreyes8614 Год назад
Good job guys
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Thank you sir!
@nathanmurdock3213
@nathanmurdock3213 10 месяцев назад
great video. good camera work.
@AlfsMustangGarage
@AlfsMustangGarage 10 месяцев назад
Thank you!
@bobsbarnworkshop
@bobsbarnworkshop 2 дня назад
Just a quick comment from having done this job recently. The 4 retaining nuts go onto Tee headed bolts that you have to hold into place while tightening so they stay oriented in the slots on the back, if not, you will bend the Tee head a on the back end of the bolt! Ask me how I know! Thanks for the video!
@AlfsMustangGarage
@AlfsMustangGarage День назад
Thank you! And you're welcome!
@bruced4337
@bruced4337 Год назад
Always a well done instructional video!
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Thank you!
@Richard-kz2om
@Richard-kz2om 5 месяцев назад
Nice video! Very well explained!!
@AlfsMustangGarage
@AlfsMustangGarage 5 месяцев назад
Thank you!
@rogersmith9114
@rogersmith9114 2 месяца назад
Great information
@AlfsMustangGarage
@AlfsMustangGarage 2 месяца назад
Thank you
@barbaratraum4280
@barbaratraum4280 Год назад
Great video thanks for making it.
@AlfsMustangGarage
@AlfsMustangGarage Год назад
You're very welcome
@JasonRust-nc9wy
@JasonRust-nc9wy 2 месяца назад
wow. great video. Ive got a 69 mustang grande. Ive watched several of your videos. great work!
@AlfsMustangGarage
@AlfsMustangGarage 2 месяца назад
Oh awesome thank you!
@classicstangbrn8964
@classicstangbrn8964 Год назад
It looks like you love buying tools as much as me, but if you stick the tip of the axle in the rear end against the seal and pry it will come out too.
@fdwsr71
@fdwsr71 6 месяцев назад
Very helpful thanks, I do have one question I purchased a newer 302 to rebuild for my Mustang and have to change to a front sump oil pan. I will close the old dip stick hole in the block. The main question I have is will the older front timing cover fit allowing a front dip stick tube?
@rosspkingful
@rosspkingful 7 месяцев назад
Very good videos. Thank you for posting them and videotaping the steps. Was there another video just before this that you went into the differential cover to allow the axles to come free or if they just held on by those four nuts behind the drum brakes on the backing plate?
@AlfsMustangGarage
@AlfsMustangGarage 7 месяцев назад
Thank you! These types of differentials don't have a cover. The axles are just held in with those four retaining nuts and then they pull out.
@pinkfloyd8482
@pinkfloyd8482 9 месяцев назад
Love the video I'm doing mine now , it's a 9 inch 66 390 fairlane, when I took axles out I cleaned off a grayish antisize looking lube off the sides of the pressed on bearing and axle tube seal housing. 2 questions. First oil from axle tubes is supposed to keep the wheel bearing lubed right? Second if I put it the right amount of oil said in the shop manual ( 4.5 pints) inside the diff plug hole when I'm finished that should mean there is now the proper oil in the axle tubes right? Thanks bro I been using your video for reference
@ducky63
@ducky63 Год назад
On a different topic. I need to replace the quarter panel skins on my 68 fastback but it seems they don’t make them for a fastback. For a convertible and a coupe yes. Makes no sense. Any videos out there on fitting a coupe skin to a fastback. I can’t afford the price of a full quarter panel or the labour to have that job done. 🤔
@dougcampbell1546
@dougcampbell1546 Год назад
Totally enjoy the videos and the education from your work on Mustangs. Do you have a video of changing the differential from a 280 to a 380 Positraction? Would like to see this before I begin to do this to mine. Thanks
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Thank you! It's funny that you ask because I just started a build series on a differential converting to a 3.8 Eaton Tru track 8" Ford. I probably won't have the videos uploaded for a while but they are coming.
@dougcampbell1546
@dougcampbell1546 Год назад
@@AlfsMustangGarage that’s awesome! You have the best videos explaining and teaching how to revive these classics!
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Thank you!
@eddievantailn2882
@eddievantailn2882 Год назад
Good video, when the axle shaft is out is that not a good time to change the diff gear oil? Question number 2, have you ever made a video of how to change the diff gear oil? If not can you give me some tips? Hope you are doing well. Thanks
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Well some of these differentials will have a large check plug on the back of the housing and some of them will not. If they do, we have been pretty successful in sucking the fluid out with a fluid extractor. However, the most effective way would be to remove the third member and get it all out that way.
@donaldwilliams4038
@donaldwilliams4038 Год назад
Well done. Each step shown including comments were clear and easy to follow. Need to do this on my 65 coupe to install longer wheel studs. Have an 8 inch rear axle and a 5 X 1143.3 lug pattern. Any recommendations or videos on how best to do this. Once again very good video.
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Thank you. For lug nut installation I use these types of tools in the link to Amazon. You essentially use an acorn style lug nut to wrench the studs in by hand. I hope that helps. www.amazon.com/Lisle-22800-Wheel-Stud-Installer/dp/B000ETUD22/ref=asc_df_B000ETUD22/?tag=hyprod-20&linkCode=df0&hvadid=312196001716&hvpos=&hvnetw=g&hvrand=12929605838847376945&hvpone=&hvptwo=&hvqmt=&hvdev=m&hvdvcmdl=&hvlocint=&hvlocphy=1026969&hvtargid=pla-459085252314&psc=1
@donaldwilliams4038
@donaldwilliams4038 Год назад
Thanks again.
@kilowhiskyforge4337
@kilowhiskyforge4337 Год назад
Additional comment here, hope can I determine if my 66 is an 8" diff or otherwise? Obviously there's something specially I can measure but what? I bought seals simply hoping they're the right size lol
@AlfsMustangGarage
@AlfsMustangGarage Год назад
It's likely an 8" if it's a factory V8
@kilowhiskyforge4337
@kilowhiskyforge4337 Год назад
@@AlfsMustangGarage excellent, it is and that seemed the standard option at AutoZone etc. Thanks brotha, you rock
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Thank you!
@gregw3680
@gregw3680 4 месяца назад
Great video!! I'm needing to do this on my '66 Mustang convertible. If I need to replace the wheel bearing on each axle, is that something a shop needs to do or is it possible for a DIYer to do? What's involved?
@AlfsMustangGarage
@AlfsMustangGarage 4 месяца назад
The wheel bearings on those have to be cut off and the new ones pressed on. I guess that depends if you have the tools to do so. Your machine shop should be able to handle that easily.
@user-xv4ff1tq4k
@user-xv4ff1tq4k Год назад
I have just had my diff rebuilt ford 8" with a true track centre. I have put the left axyl back in as I have done many times before. I have noticed that the axyl has movement in it I can pull axyl out a good 6 to 8mm,I have never previously noticed this before. Is this normal. When I had diff rebuilt also had axyl seals and axyl bearings fitted by a reputable company. Any advise appreciated. Craig
@wingrider1004
@wingrider1004 4 месяца назад
Great vid. I'm restoring a 1972 Torino and I am getting an overview on the different methods people use in restoring their old cars. I used to turn wrenches for Ford back in the 80's...but that was a while back. I'm retired now and enjoying the journey with my old car. What digital torque wrench is that?
@AlfsMustangGarage
@AlfsMustangGarage 4 месяца назад
Oh awesome thanks! That's a Snap-On torque wrench.
@Ecosse57
@Ecosse57 Год назад
this was a great walk-through, thanks! i wonder if you think those felpro gaskets should be the same for a granada 8"? the rear is not installed and want to go through the rear with seals, bearings, and gaskets. also... can you suggest a company that makes high quality brake parts (shows, hardware, drums)? i'm concerned about "off shore" parts defects, etc...
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Well I'm not Well versed with Granada but I'm guessing if you went to your local parts store, they should be able to look that up. As far as good quality brakes without getting crazy, check Napa.
@Ecosse57
@Ecosse57 Год назад
@@AlfsMustangGarage good point. thanks for the feedback. great channel sir!
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Thank you! Appreciate your support.
@dangerman1969
@dangerman1969 10 месяцев назад
I have a 1969 convertible 8" rear end that I'm going to replace the seals on too. Do I use 2 of the same paper gaskets 55001 on both sides also?
@AlfsMustangGarage
@AlfsMustangGarage 10 месяцев назад
Yes I believe its the same gasket.
@bluesbreakerpete8908
@bluesbreakerpete8908 Год назад
"Hi great video. I am currently doing this job on my 67 Mustang with the 8"rear end. When I install the axle seals on the tubes I can only get them to within a 1/4" of the flange behind the seals. They will not drive any further. I am using the proper seal driver but no joy. When I install the axle the bearing now sits 1/4" out of housing. Any idea? Tried the national and timken seals. Thanks.
@AlfsMustangGarage
@AlfsMustangGarage Год назад
I'm not sure. I do know they made two different sizes of seals for those 8" ford's. Did you get the right size seal?
@eclipsetravel4926
@eclipsetravel4926 Год назад
Is there an additional gasket on the axle bearing retainer plate? I have the inner and outer paper gaskets but someone told me I needed a gasket for the retainer plate. I can’t find them online. Thanks.
@AlfsMustangGarage
@AlfsMustangGarage Год назад
No. There are no additional gaskets. What you see in this video is what there is.
@fasteddy
@fasteddy 11 месяцев назад
Just put brake drum on backwards and pull it into the lug nuts and pop that axle out, don't need a puller.
@AlfsMustangGarage
@AlfsMustangGarage 11 месяцев назад
Some are more difficult than others to get out as to why the proper way is demonstrated.
@Table1000
@Table1000 Год назад
So the axle seal is before the bearing. How does the bearing get oil and not leak? Is there a seal on the bearing that needs replaced too?
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Well the bearings don't get oil. They are a sealed unit.
@daveharris7072
@daveharris7072 Год назад
Thanks Alf for another great video. What kind of rust inhibitor did you use?
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Thank you. I can't quite remember but I'm pretty sure it's like the 3M rubberized undercoating in a rattle can.
@daveharris7072
@daveharris7072 Год назад
@@AlfsMustangGarage Thanks, love your channel
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Thank you!
@garyhelms1889
@garyhelms1889 3 месяца назад
I noticed those paper gaskets have a loop at the bottom versus just being straight across. I'm looking a catalog to get the gaskets. There are 2 different styles, one says it has the breather passage like the ones you used and the other does not have the passage (bottom loop). Why would I use one over the other??
@Ricardo-RAC
@Ricardo-RAC 6 месяцев назад
So the axle seal can be replaced without having to remove the backing plate, correct?
@AlfsMustangGarage
@AlfsMustangGarage 6 месяцев назад
Correct
@jonleone777
@jonleone777 Год назад
Is there a C clip that you need to remove inside the rear pumpkin before you can remove the axle?
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Not on this style. These just pop in and are bolted secured with that flange.
@jonleone777
@jonleone777 Год назад
@@AlfsMustangGarage Roger that thanks
@kenschreiner6465
@kenschreiner6465 Год назад
Are all 8 inch 28 spline axles
@Dekoan01
@Dekoan01 Год назад
@AlfsMustangGarage hey there what can or should i do if i cant get my hands on a Slide hammer axle puller? (my idea was to get a old wheel and put it on the axle and try to hit it with a big hammer or something, idk if that would work)
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Try taking your brake drum and turning it around backwards. Install it with 3 lug nuts with maybe 3-4 threads on it. Now use that as a slide hammer. I've heard that works pretty good. Although some of those axles take some force, some will come right out.
@Dekoan01
@Dekoan01 Год назад
@@AlfsMustangGarage allright, thanks for the fast reply! I will be trying that this week lets see if it works!
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Sounds good keep me posted
@lynnh7694
@lynnh7694 Год назад
How often should those be replaced?
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Just if they start leaking.
@user-tx2hd1mf8b
@user-tx2hd1mf8b 4 месяца назад
how much gear oil does the 8 inch require? you didnt show refill?
@AlfsMustangGarage
@AlfsMustangGarage 4 месяца назад
Oh ya, we didn't drain this one. It's probably 2ish qts.
@MichaelBrown-ke8dn
@MichaelBrown-ke8dn Год назад
Amazon is saying that wheel seal you provided doesn’t fit my 67 mustang. They are saying 9569S wheel seal is the right one. I have a 8inch rear end. Thoughts?
@AlfsMustangGarage
@AlfsMustangGarage Год назад
There are two different sized seals for the axles shafts of an 8". There is the WCY axle code and then all others. The 9569S is the most common, and the 9161 is the odd ball.
@MichaelBrown-ke8dn
@MichaelBrown-ke8dn Год назад
@@AlfsMustangGarage that’s good to know. Thank you!!!!
@AlfsMustangGarage
@AlfsMustangGarage Год назад
You're very welcome
@solidsnake1120
@solidsnake1120 Год назад
Mine is leaky like that too, but it's watery...do I have more than one issue? Lol
@solidsnake1120
@solidsnake1120 Год назад
Also, how do I know which seal I need to buy to replace my leaky one? I don't understand 28 spline, 31 spline, etc etc
@AlfsMustangGarage
@AlfsMustangGarage Год назад
If you have water inside your differential oil, it could be just years of moisture condensation building up over the years. It also could have had the rear axle going though some extreme weather or under water at one point? Either way, you should change that oil out. To answer your question about which seal, if you have a stock rear end, any local parts store will have the factory seals. Just need to tell them the year and engine size.
@kenschreiner6465
@kenschreiner6465 Год назад
What is seal number
@AlfsMustangGarage
@AlfsMustangGarage Год назад
Should be in the video description
@josephsandage2254
@josephsandage2254 2 месяца назад
I can't believe he didn't replace the bearing along with the seal. The bearing wearing out is why the seal fails in the first place and most of the time you will not be able to "just feel" if the bearing is bad. The bearing will start wobbling do to normal wear which is why the seal wear out. This seal will fail in short order because he didn't fix that caused the seal to start leaking which is the bearing. I have been a tech for 40 years and have done at less 50 of these jobs.
@AlfsMustangGarage
@AlfsMustangGarage 2 месяца назад
This is not true. The bearing was fine. The seal wore out due to normal wear because it was an original Ford seal nearly 60 years old.
@mmb1487
@mmb1487 6 месяцев назад
Excellent video thank you
@AlfsMustangGarage
@AlfsMustangGarage 6 месяцев назад
Thank you, glad you liked it!
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