GM 10-bolt axle rebuild complete!
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- Опубліковано 1 жов 2024
- This video goes through the GM 10-bolt axle overhaul. I use the GM special tools, go through the measurements, do contact pattern analysis, and much more! This was live with no editing, so you'll get the dialog and chitter chatter that goes along with it.
Wear glasses. Hardened steel can Shatter! Good to hear you say. I'm an Old machinist who took a fragment of tool steel from my lip, and once from the white of my eye, scary. I always use gentle heat when removing bearings. I made a special pinion setup bearing by honing .0005 from the ID of a New BRG to be able to remove it for shim setting. Used it 3 different times for my 12 bolt.
Thank you for the education...got my new gears today !... I've done it before, but what a great refresher course you provided !
I do the ring gear case setup without the pinon in. When you get the right shims with the carrier in and snug up the caps you are suppose to put a inch pound torque wrench on the ring gear bolt and get a rotation reading between 20 to 25 inch for new bearing and 10 the 15 with used bearings. This is the real way to do it. Note it takes time. After you get that during setup you can take away .002 to .004 on each side to get close to your backlash with the pinon gear in. Then add what you took out to get the proper preload on the carrier and check backlash again. The reason for taking side shims away is to make it easy to take the carrier out several times to get close to your backlash. Also a case spreader helps out a lot for hard to get out stuck carriers. Gm had a tool you put in without shims to get the preload then you took the out and mike each one that gave you the shim pack you needed for each side. I never liked them spreading tools myself. If you have done enough of these use a old pinon bearing and use a flapper tool to make the big bearing close to the shim so you can just tap it on to get your pinon setup. Way to easy to wreck a bearing pressing it on and off to many times. I would take the pinon to the tool and die shop I worked at and put the pinon in the lathe and use fine wet sanding paper to get a tap on bearing fit. Did a lot that way and never had a comeback. That way you could use the same bearing to get the pinon deep right. Final assy just put some red locktite and you was good to go. There are a lot more tricks without spending a fortune on tools. Only good tool I hand was the deep setting tool for aftermarked ring and pinon sets which had the deep marked on the pinon. I always used Richmond gears myself. Back in the day it was Schafer gear sets were the best. Zoom gears were junk back in the day. GM gears are to expensive.
Where do you live? I'd love for you to build my rear end. I messed it up. I have an Auburn locker, and I don't want to ruin that too.
I can hear you this is Isai from Edinburg Texas
Amazing in-depth content. For a home DIY without fancy tools, got me good pattern and no chatter. Thank you 👍🏾
This video is as good as it gets on this subject, great detail & explanation.
Excellent video!! With the addition of a few tools, I’m much more confident that I can do this. I’ll have to take my time but I’m sure I can do it. Thank you!!
people always search for the video they need just for a few key points but never like to watch the long video of something as such detail specific crutial steps of something with not only 1 or two but 4 key steps to a correct problem free setup.. as a kid i was always was around my father building personal cars over the years and actually he currently has a 73 camaro and i have purchased a 78 camaro and bought my wife a 78 camaro and rebuilding both 78s i upgraded to a limited slip eaton style unit as my open diff spider gears were eating my cross shaft pin just on 1 end too many 1 wheel peels and making a clunking sound while driving and the amount of information you have taught ensures i will only have to do this 1 time and not have to open the rear end more than 1 time with correct specifications and less worried of problems or noises due to incorrect installation or placement or incorrect shimming. thanks for making a great informational packed video to learn crutial steps to a proper setup... am actually headed to the garage to finish putting in my LSD differential right now...
I’m super lucky because I have to rebuild my differential but my teacher is going to help me out and he’s been a technician for 20+ years.
Truly appreciated! Thanks for the thorough detail on the rebuild.
Holy crap! I feel like for the first time I am not crazy scared to try this myself. My project is to replace my open diff with a posi, keeping the same gears. 1) My pinion was untouched so, now after your lesson, I’m not worried about the pinion depth. And I understand how to verify the pinion preload. Even though it it probably unnecessary. 2) I have the proper tools and now I understand how to measure backlash and more importantly how to adjust it. And you really simplified getting to the appropriate preload on the carrier bearings.
This was an excellent video, very professional, helpful and thorough with an awesome instructor . I've looked through tons of other videos on this subject and this is by far the best I've seen .I learned quite a bit from watching this . Thanks for the upload 👍.
Seriously, thank you for this video. I have 5,000 miles on my first engine rebuild (5.3 ls) and the truck needs to be re-geared. Dispite getting the thousand pieces of my engine successfully back in working order, this differential has had me scared. Mostly due to the lack of step by step documentation out there. Most everything on the internet is either "throw it together, use some contact paint, and it SHOULD be good to go" or "take it to a professional it was the worst thing I ever tried".
I have a few tools to add to my collection, but it definitely seems like something I can do correctly. Thank you. All the question marks are gone.
5 by 5 loud and clear. Thanks so much for an extensive tutorial and it looks like it would be a joy to utilize all that clean space to get some repair and fab work done.
I also commented on his clean shop, I am now inspired to organize our shop for the first time. I am retired at 59 and have the time to do it with my son so he can learn with me. My dad wasn’t into working on things so we get to start something new for our family. Greetings from Washington state. I have a 12 bolt posi unit to install in a rear end from a 1970 Monte Carlo we bought but didn’t need. Good luck!
I’m really glad you shared this! I have my gm 8.2 ripped apart and ready for new parts. Your explanation helps a lot!! The initial description of the side preload was a lil confusing at first but the summary at the end helped clear the confusion.
Thank you and your helper for taking the time out of your day to make such a detailed and informative video. This is extremely valuable and knowledgable information and im very thankful you shared this for others to learn. You guys are great!
This is an excellent video. I have been drag racing for a lot of years and set up lots of gears for racers and it's always a pleasure to see a video with this much detail. Thank you for uploading such a fine video.
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Always wanted to see a rebuild.
Awesome video and explanation! Thanks for posting. This made my own carrier and gear swap (to limited slip) super easy.
Awesome! Glad it helped!
My setup tool is way cheaper and more convenient.
I use a PC of ground Starrett flat bar stock I drilled to put across the milled BRG cap surface and then measure down to the pinion face subtracting the thickness. Very accurate.
What manual is that that showed you the specs
Thank you for this tutorial...well explained an I learned something tonight...and as always appreciate when someone is willing to share an teach there knowledge
It’s really nice to see a professional take his time and really go through the steps thank you I feel more confident about redoing my 10 bolt now
Agreed
Can you put a 6 lug in the 8 bolt rear end
@@petepeterson3437 I’m not sure man, but what do you have it in?
Agreed
You're the best teacher I have seen on UA-cam in 10 years you explain things to me where I can understand them thank you
There is also a 8.2 10 bolt. That came in first gen camaros and firebirds.
Great video Sir. I am aa newbie truck enthusiast, area of focus, axles, this was a very good breakdown and much to learn. Thank you for posting. Subd.cheers
Setting up my 8.5. Not one video around does a better of a job explaining the set up as this one right here. Thanks so much
This is the best video on UA-cam or anywhere for that matter. The only part that has my ability in question is setting pinion depth. I'm rebuilding a gm 12 bolt 8.875 with 3:73 gearing and replacing everything but the carrier, spider gears. It's out of a 71 chevy c10 and looked to have low miles because there was such little backlash and the gears looked fantastic but it probably sat for a long time because the teeth on the ring gear that were above the gear oil are pitted beyond usability. I dont have that tool to measure for pinion depth but can I still rely that the shim between the old pinion and bearing to be correct? I'm also putting higher 3:43 set in it if that matters
This is the most helpful GM rear end rebuild video on the internet .!!!!!
Thank you, Best explanation and lesson on the internet! Thank you for your knowledge and time!
Woody Harrelson, I really admired your acting, especially those memorable years on Cheers! It's nice to see that you found such an excellent hobby in your golden years. Keep wrenching!
Ha, I was thinking more of Ken from "Real Genius"
All in good fun, this guy has simply the best video on the GM 10 bolt I have ever seen...well done!
I know have the confidence to do my Gen 3 Viper with new gears, bearings, seals and a OS Giken Superlock LSD. Thank you for this exhaustive tutorial. Well done sir.
Help the same as fitted to a 1964 Jaguar MKII and can I use your video to help me ?
Turning the diff over with the bearing clamps off. I hope you have steel toe shoes on.
WoW! What a great tutorial for someone who has never even tried to do this myself. I replaced the entire rear end rebuild components. I did it all including a new Differential carrier and watching the details you provided really helped me out alot. THank You SO Much for being so detailed.
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This will be my Go To video for setting up my rear differential on a 7.5" GM 3.73 gear ratio carrier in an AWD Astro Van! I replaced my G80 Locker with a rebuild from BET Performance because my Spider gears were toast. New Pinion bearings, races, crush sleeve, seal, and original (32) Shim. My Ring gear and Pinion shims are both (.240), go figure! I was told to reuse them. No dice, way too tight! I'm replacing them with the Super Shim kit. I have measured the shims in "inches" and "mm" in order to be ready "anal" for the install!.......Today is the day.....I have watched this video many times and feel confident! Stay tuned.... Outstanding instructions....THANKS
So you beat dudes price down over $1.17 usd for two pieces. You can’t let young fella get a win over $1.17
Turn your guillotine 90° so that each red spacer is parallel .... arrrg... you just demonstrated. Recently saw Dave's in Utah made it VERY clear to not stress screw rods.
Came here after changing fluid (probably) first time on an 07 trailblazer. It's sloppy, but now has new fluid, seal and drain plug (also known as rear cover!)
Your videos have helped me out on past and present cars. I am particular and not content with someone else's 'good enough'. And then half of my small fleet is European and I'm in rural Missouri.
Love your videos very helpful. I'm working on a Chevy astro van, which has a 7.5, but I can't find the preload Spec's. I did find 12 to 15 inch pounds, but I'm not sure. Please help.
I am helping my brother do his diff. (Complete rebuild). I have never worked on diffs before but after watching this video a gazillion times I feel I could do this blind folded. 😭😭😭🤣😭😭😭😭
Really great video! I’m doing my 10bolt 8.5” very soon! Where can I print out one of those instruction packets you have? Would really help! Thanks 😊
Ok... So what's the preload formula for the (pinion and carrier bearings) 8.5 10 bolt again???
Side bearing preload is the total preload minus the pinion preload times the axle ratio. It should be between 15 and 35 in lbs. Or you could just make sure the total preload is between 5-7in lbs higher than the pinion by itself.
First time back yard guy. Thought I was done and put back together. Started up and put in gear everything looked good, then disengaged. What did I do wrong. Back apart, now after watching your video I will try again
I've watched many many videos about the rear differential. I've killed 2 factory differentials. So I'm gonna try to build one. Crazy but I feel way more confident after watching this. Your an awesome teacher. Even threw in some common sense along with some technical. Thank you!
Just got my gears swapped to 4:11 and my pattern came out dead on first try. Nailed preload. Thanks again
Great sound
Great video! I'll be doing my first install soon and your discussion of carrier preload will be very useful. It's often glossed over. I'm sure I'll watch this two more times and should be able to attack the job with confidence. Thanks!
could you take a little trip to Norway? I have a few issues with my pontiac firebird differential. I`ll keep the coffee!!
What’s wrong with your differential? My 12 bolt differential in our 1970 Monte Carlo had a few parts missing when we bought it and needed a posi unit anyway so we are going to try to make it a posi and install new axles. I just want to get it right the first time and not have to remove it from the car again. Good luck with your European hot rod!
@@patfromamboy well, a few bearings made a terrible noise. Now i have started to remove shafts, axles, pinion and all the other parts on my 10 bolt differential. Thank u for answer.
On Eaton locker ,looks rescenly replaced but makes noise at 40 miles per hour ,is that bearings ,also seems like too much play on passenger axil,will go in and out 1/4 inch ???
Greetings !When you replace pinion shaft bearings , and diff. side bearings , and you keep reference of all the spacers and shims where they came from , can you just put all those where they came from and be all right , and just do the adjustments check ?
It took me a second but yes, I can rub my belly and tap my head simultaneously
Seriously, I learned a lot, thank you
Absolutely amazing!!!!...Greetings from Northeastern Canada........Martin
Just watch this video found it fascinating thank you very much I am a backyard mechanic and appreciate the help
Nice work! Your a great instructor and very good at teaching proper methods. I appreciate you
At 1:41 you answered the preload question that has eluded me. The investigation and correction when things didn't turn out perfect is gold, and the little side-bars of real world tidbits like using the press and the cast iron spacer add credibility AND keep it interesting. Nice work!
I always like to watch classroom set up and ideas
Same
Another great video. Thanks. Keep them coming.
Around the 24:10 mark I just knew that carrier was coming out.
On 1:39:52 what is the name of that tool? Wow i fell asleep watching your video last night but continued watching it as soon i woke up 4:30 am really interesting video
Yes can hear you properly good good visual to thanks
Great video - excellent detail and good explanation. Thanks for posting!!
Thanks! Great video! It was very helpful
I'm putting my room back together right now but my cats were a little knob on them were facing inward this is very informational video I like this are my cats wrong or right
will this is so many have power positive traction will this is so many have power positive traction
when assembling your differential, you probably don't want to file your shims over the differential or the housing...drops metal shavings into the differential when you do...
Ah, good point!
If you were to use a new crush sleeve, do you know approx. how much torque is required to begin to crush the sleeve? I'm trying to set my pinion preload and cant seem to even get the bearings to seat. Ive been told its because the crush sleeve isnt compressing. I've put about 250 ft lbs on the nut and it wont budge any further. Thanks. Great video!
It takes a lot of torque. I’ll usually compress the crush sleeve in a press to get it close to the size of the old one to make it easier. Grease up the threads on the pinion so you don’t strip them out. I’ve actually made a torque multiplier out of an old auto trans planetary gear set to help with pinion nuts. It’ll probably take about 300 ft lbs. Be careful, once the pinion isn’t sloppy in the housing, the preload will climb quick. Do 1/8 turns between checking so you don’t over preload the bearings. Good luck!
You can use a steering wheel puller on your yoke and pinion, just put two bolts in the ujoint holes and tighten the center of your puller and it will pop right out and you will not have worry about the pinion falling out
At the end when you said if you decrease backlash it would push it to the toe wouldnt decreasing back lash move it towards heal of ring..
The 1 thousandth the pinion measurement was off could be due to several factors. I would go with it.
Looking to rebuild a rear end for a four-by-four 2001 Sonoma pickup rear end locked up
I have the same rear end and I found teeth that are broken in it I need to replace the whole rack and pinion but I can't afford to take it to a shop I'm going to do it in my garage any suggestions
Best 2 hours I ever spent here at 4:30am. I'm trying to rebuild my GM 8.2 as we speak! I bought a new posi carrier and bearings, crush sleeve. My original .25 spacers were too tight to use but not by much. At least I know what I'm gonna need in terms of spacers or shims. Thank you for the knowledge and extreme details.
I am glad I bumped into
your channel cause I,m in the. Middle of changing my 66 c10 to a posi rearend... thanks for the class. It will be my first rearend job !!!
Awesome! Good luck with the C10!
Good
This is beautiful!!
Здравствуйте.
Посоветуйте пожалуйста хорошее масло в данный дифференциал.
Thank you for your axel servicing videos!
OK iam done lak of sound you start getting real low when it's important like your not sure of what saying later
glad to see you use two wrenches on grease indacater so do i . I set mine .002 closser than spec due to carrier cap spread do to torqe in mud racing
Great video! I have a question about the Toque wrench for the pinion preload. Can a beam Inch-pound torque wrench work inplace of the dial one used?
Yes, a beam torque wrench works fine. Just pay attention to the torque while rotating, not the break-away torque.
I'm just watching your video because I'm new at what I'll be doing to upgrade and rebuild my 10bolt GM rear end out of my 94 Pontiac Trans am..
Cool! Good luck with it!
@@siuautomotive thank you..
Great School! Went through the automative program in the early 90s.
Can that diff be converted to IRS by installing CV axles?
I need the other video mentioned anyone know where i can find it i looked through the channel videos but didnt see it unless i overlooked it 1:07:45
Where do you get an assortment of shims like that for BOP 8.2?
Awesome video, Thanks for the great step by step!!
I'm pretty sure that my rack and pinion gear on the in their the teeth are broken off do I need to replace everything
Very informative lesson. I now have 0 fear doing my rebuild. I must say although I realize those are for demonstration I cringe when you file parts over open diff.
On setting up the Pinion depth and selecting the proper shims, what importance are the markings on the pinion head? i.e. How do you factor those markings into the shim selection?
The markings indicate what you need to do the the pinion shim to accommodate for a pinion that was made slightly off. On the GM pinion, if it indicates a "+" number, then you add that amount to the nominal shim thickness. It's the oppose of Dana axles. Dana tells you how far off they made the pinion; GM tells you how to correct for their pinion that's too big or small. If the replacement and original pinions had the same markings, then you'd use the original shim. If the original had a -2 and a .030" shim (for example) and the new pinion had a +3, then you'd put a .035" shim in. Reason: the original shim accounted for the pinion that was made .002 too small, so the "perfect pinion" (or nominal) shim would have been .032." Now the new pinion was made .003" too big, so you'd want to add that .003" to the nominal shim. .032+.003 = .035. Hope this helps and wasn't even more confusing. Please not that this process is true on GM axles, but it's the opposite for Dana axles.
@@siuautomotive Thank you! I have built a few differentials in my time, and it's always been a trial and error to get it right, but this is by far the best training (video) I have ever seen! Thanks again!
Am I to understand if everything was good with the diffs operation and the pinion bearing went bad after a fairly long life that the pinion preload is all that will usually need to be adjusted? Like the side shims should still be correct for the specific gears.
Yes sir!
Working again a 7.62. Tomarrow. Wondering if you know pinion distace. Its getting hot. Added a Amazon limited slip.
2000 blazer. Thanks
2004 F150 4x4 5.4L New Body Style as well 3.73
Excellent instruction! Thank you so much!
Very good quality video. Thanks for this.
I did the pinion preload when I rebuild a diff but did not have the tool. I'm thinking spec was like 28 inch pounds or something. I used a mail scale and pushed against a 1 foot bar and kept lightly hitting it with the impact until preload was met. It worked like a charm and needed to pinion holder wither . Just held with my hand and a towel over it to keep it form spinning.
where can I get the table mount? or what is the make and model for the tale mount bracket?
Can you please post a link in the description to your video on rebuilding limited slip clutches. I can't find it in your play list.
Thanks
FYI pinon nut is called a progressive torque lock nut
How much shim needs to added or taken out if the pattern for the pinion depth is wrong?
I've been trying to get an answer for months. The two big holes on the area where the differential cover goes, right in front of the bearing caps. Are those supposed to be covered by the Fel-Pro gasket? Some paper gaskets have a slot an some don't. Are the holes there to lube the bearings? Should the slotted gasket holes be opened up ? I would appreciate if anyone can help?
Those big holes are for a case spreader to help when installing the diff case. Since the bearings have preload they don’t allow the diff case to just install easily. The spreader allows the tech to open the hosing about .015”. Those holes can be covered up or left open. No oil comes through those holes.
@@siuautomotive I would have never thought that would be the answer. Thank you for your knowledge and helping me to understand why those dang holes are there. Thank you. 😊
Where can i find the bench mount along with the attachment that holds the differential?
Ken your coming in clear good info > can use from guam I live here thanx
muy interesante muchas gracias por el esfuerzo