#ETCGDadsTruck

This is (Episode 5) of the #ETCGDadsTruck Series.
In this installment of the #ETCGDadsTruck series I rebuild the axle assembly and differential in my GMT400 with a 10 bolt rear end (8.5”). This includes replacing the gear set, the differential (with limited slip), axle bearings, pinion bearings, differential bearings, and all seals. It includes all the tools and torque specs you will need. I also show you how to check and set backlash and interpret a gear tooth pattern.
This video will apply to all GM 10 bolt or 8.5” differentials.
Episode 6: • #ETCGDadsTruck Axle/Di...
#ETCGDadsTruck Axle/Differential Rebuild (Part 2): • #ETCGDadsTruck Axle/Di...
#ETCGDadsTruck Axle/Differential Rebuild (Full Version): www.ericthecarguy.com/exclusi...
Camera: Brian Kast, Eric Cook
My Patreon Account: / ericthecarguy
The best place for answers to your automotive questions: www.ericthecarguy.com
Check out the ETCG Blog for the latest info: www.ericthecarguy.com/blog
Check out my ETCG1 channel: kzbin.info?su...
Summit Racing: www.summitracing.com
Thanks for watching!
Info
GM GovLock (G80): www.autoevolution.com/news/a-...
Part Links
My Differential: www.summitracing.com/parts/au...
My 3:73 Gear Set: www.summitracing.com/parts/su...
My Differential Cover: www.summitracing.com/parts/sm...
Ratech Ring and Pinion Installation Kit: www.summitracing.com/parts/ra...
Truck Axle Bearings (WE60690)(513067): www.ebay.com/p/Wheel-Bearing-...
Axle Seals (F4762N): www.ebay.com/itm/Federated-F4...
Tools
Slide Hammer with Axle Bearing Attachments: www.jbtoolsales.com/otc-6540-...
Axle Bearing Puller Attachments: www.jbtoolsales.com/atd-tools...
Astro Pneumatic Bushing/Seal Driver Kit: www.jbtoolsales.com/astro-pne...
Dial Indicator Set (Checking Backlash): www.jbtoolsales.com/central-t...
Bleepin Jeep Pinion Tool: store.bleepinjeep.com/product...
Shim Installation Tool: www.summitracing.com/parts/yg...
Milwaukee 1/2” (the big one): milwaukeetool.com/Products/Po...
3/8” Electric Impact: www.jbtoolsales.com/ingersoll...
Trusty Cook Hammers: trustycook.com
1/2” Breaker Bar: www.jbtoolsales.com/k-tool-23...
Torque Wrench: www.rakuten.com/prod/282405511...
Related Videos
#ETCGDadsTruck 4” Rear Suspension Drop (Part 1) (Episode 3): • #ETCGDadsTruck 4” Rear...
#ETCGDadsTruck Gets Wheels & Tires (Episode 2): • #ETCGDadsTruck Gets Wh...
Ford 8.8 Assembly and Set Up (Short Version): • Ford 8.8 Assembly & Se...
How To Clean and Prep a Differential: • How To Clean, Prep, an...
**Answers to your automotive questions found here: www.ericthecarguy.com/faq
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Wanna see more stuff like this from ETCG? Information on Premium Membership: www.ericthecarguy.com/premium...
Stay Dirty
ETCG
Due to factors beyond the control of EricTheCarGuy, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. EricTheCarGuy assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. EricTheCarGuy recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of EricTheCarGuy, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not EricTheCarGuy®.

[@deckdresser]

Just got done with this nearly same project on my 85 C10 8.5" ten bolt that started July 5. Yours is a 1990 8.6 but is still applicable to an 85 8.5". I watched and re-watched these videos for insight before and during the project. I can't believe how differently my project went. Thanks Eric for your knowledge and guidance including the tool recommendations. For comparison, my project started with not being able to remove the pinion shaft. The locking bolt came out, no problem. Then the hell began. The carrier came out the only way it could- in multiple pieces. four days later and different parts from Summit, I got to drive the upgraded rear end for the first time. SATISFACTION!

[@darrenjattan4277]

Hey Eric,I'm from Trinidad You're a number auto technician who teaches everyone the tips in every version And that encourages someone to learn and reach in skillful position You can make somebody go beyond destination with qualification Just keep adding modification

[@heinricheugenvonhelmbrecht6905]

I am a cinematographer and MS in mechanical engineering. You are overperforming in both. Thank you to your Brother!. The best tutorial and best video I have ever watched.

[@sarabrown2840]

Only have watched this one video so far , but you describe , and show everything so clear ...I will be watching many more for sure . Great job your flippin awesome !!!!

[@stanatqc]

ETCG is a good source of joy trough any rough day, he's always having fun around and he'll teach you new perks :)

[@rayj4722]

My truck, a 02 sonoma, has this differential and I thank you because I was stuck at the point of removing the clips I thought of dismantling the whole thing and then decided to look it up on KZbin, oddly enough I have a blazer same year and it’s a straight and simple differential, that one I had no problems changing oil and changing seals, saved me a headache thank you

[@Jodeyjoe559]

i never knew about the rag trick to remove the pinion nut, much quicker than setting up the yoke on that tool with bolts . just stick a rag in it and zap it off . thanks Eric for showing us the shortcuts uve learned from all those years of experience

[@darthvincor]

Awesome stuff again, seeing the inside of a diff and the different types of diffs.

[@shawnh.2334]

I'm glad you made this video, I need to do this to my Nova to put new drum brake backing plates on and new wheel bearings

[@zacharycopeland9670]

This video is very informative and honest. True trial and error at its finest! You have made a visual representation of engineering vs real world. Thank you

[@michael102387]

I would like to thank you for your work on KZbin. I will model my entire rebuild after your attitude and know how, but I’m limited in my “budget”. I am still going to need that honest guys help, “My Dad”. Thank you for opening up my eyes to the tools and things I need for prep, if affordable or rentable I am going to do all the work myself. I prefer that way. Thank you sir

[@BCABearings]

Great video! Always nice to see our BCA Bearings in the wild, especially when someone is using the correct tools and procedures to remove and install them.

[@turboflush]

For a honda guy.. You sure seem to know what your doing. Well explained. Been over 20 years since i done one. Getting some refresher.

[@vijayantgovender2045]

Thank you Eric always enjoy watching your videos and watching dads truck from South Africa

[@fire7765]

Great job Eric, thx for sharing.

[@richardritter3092]

Thoroughly enjoyed watching you work ..... you're definitely not the typical hack and slash mechanic

[@natedowd]

Awesome video. Doing my 1st rear differential in my auto service Technology class on a '65 chevy Camaro. Its so good to see the step by step u did. Helps a ton! Love the humor also. Definitely subscribing. Keep em coming.

[@SaberusTerras]

Love that oops moment right at the beginning. Good thing nothing unfortunate happened and that you're still in one piece. (Same for the truck, but human safety first.)

[@0NEVERAGAIN0]

Absolutely awesome detail. Thank you

[@lalosgarage7541]

I did this same rebuild on my 1991 Silverado. Used an Eaton tru trac, Richmond 3.73 gears, Moser axles and rear disc brake kit from Summit. About 2000.00 in parts plus other misc. Came out great, first time I had done a gear set.

[@markamcampbell6340]

my instructor in mechanics school used to love doing diffs at work. the book gave them 3 hrs and after doing so many of them they could crank them out in 15 to 20 minutes same with brakes it was there bread and butter to them.

[@dannycox6842]

Like I have mentioned, brings back a bunch of memories of back in my day, in the county I lived in Kentucky, there were only a few of us that knew how to do what you have done in this video. Good job, Eric !!

[@Nightwing300]

You know how many times I heard guys I worked with say they can do differentials only to have them comeback on tow trucks. I really wanna learn how to do these right. Great video. Hopefully I'll be as good as you.

[@TickledFunnyBone]

I had one of those trucks many years ago. Loved! That truck!

[@Cpl.Cadaver]

I re-built the rear end in my s-10 bazer a couple of years ago. I spent as much on tools as I did on parts. Detroit tru-trac, new ring and pinion gear. New axles and bearings all the way around. No regrets with either parts or tools.

[@ElrodsGarage]

Awesome video, informative and entertaining. I almost look forward to tearing into the 10 bolt on my '68 Camaro.

[@jamesmacnaughton8188]

Outstanding detail!! Thank you for posting this!!

[@fwpart3306]

Thank you, Thank you, Thank you..... exactly what I needed for my conversion

[@PhaseP1]

Another option to press or heating the bearings is to place the differential core in deep freezer for a few hours which shrinks it.Did that once when I didn't have a press. I had both frozen the differential but also heated up the bearings. The bearings fell down to their places. Heating the bearings has the risk of weakening them if they get too hot, they may loose their hardness and temper. (Wrote the keyboard/weekend warrior) I like the videos!! Also I had applied WD-40 on the differential so that the condensation from cold wouldn't cause rust. That is the risk with freezing it.

[@jrw1316]

Awesome video, thanks Eric, just what l needed. Very good detail!

[@halimaw247]

I don't even have this truck but I still enjoyed watching this video. I like how you explain things.

[@edotis3389]

Extremely helpful video. Thank you for sharing 👍👍👍👍👍

[@jeremyjames3733]

Thanks. Its 3:15 am and I'm finally done this this k1500

[@jewllake]

I've driven GM trucks for the past 25 years all with Gov Locks and they are good units. The guys that blow them up are the ones burning rubber and doing side shows or the ones who get stuck in mud or sand and just abuse the truck and push the skinny pedal to the floor. All my trucks, with the exception of 1, have been 4wd and have been able to get out of tough situations with one wheel completely off the ground and the G80 just made me truck on through. I have also been stupid and done a few wicked burnouts and donuts with my G80 and they have held up well. My new 2018 Sierra 4x4 with the 6.2 420 horse and 460 torque has the G80 in it; I'm sure it will be fine. Nice build so far! Have been enjoying the videos, hopefully you don't end up notching the frame.

[@hochhaul]

The newer GM trucks use a modified version of the 14-bolt SF axle. It uses a 9.5/9.75" ring gear and a much bigger carrier. That allowed Eaton to create a beefier G80. They can take more abuse than the older 10-bolt version.

[@samsquires2877]

Love this series

[@keithdawe4866]

excellent instructions. Thank you for taking the time to make the video

[@brendonfleming9243]

Finally somebody who actually shows every step and doesn't hoard their knowledge

[@titanicwhiz]

Everyone, Including me.. can learn a TREMENDOUS amount from ETCC!! I love it!! Thanks!

[@anthonyjcarolan3161]

You have done a great job on your dad Axle Differential Rebuild I love ❤️ your video 📷 the are best thing I can't wait for the next video 📷 #ETCGDadstruck

[@mychaleporter6228]

Thanks bruh, this has been a beautiful thing! Good deal n great work!!!!

[@bambambundy6]

I literally put the carrier in the deep freeze to shrink it down. I have spent sooo much money at Summit!! Fast shipping! Like it!

[@JustinDowDIYcentralhighway]

Nicely done Brotherman! 🍻

[@tolisdrums]

I pretty much enjoy the "comic relief bits" in the video Nicely done as always

[@spelunkerd]

Looking forward to part 2! I've often been curious about how to adjust pinion depth, I've never had the opportunity. There must be an easier way than grinding bearings open to make sure you're in the right ball park, before putting in the real crush washer and a second set of new bearings.

[@graymodeler]

spelunkerd I think the bearing set comes with a figure (distance) to use to set the measurement from the center of the axle races to the rear of the pinion. There is a tool that Eric showed that professional installers use to measure it and install the proper shims. Then the side lash also has to be measured and adjusted with the shims Eric removed with the diff races. Since the teeth are semi circles, they must match.

[@1717jbs]

Good stuff Eric!

[@litoloco4fish]

You are so knowledgeable!!!! 👍👍👍👍

[@srconcepts1848]

I really enjoyed this video, Eric! This feels more like the older ETCG videos, and not in a bad way. You seem a lot happier to be doing what you're doing- just working in the shop, goofing off, and being yourself. I can tell something has internally shifted for the better with you, keep it up man!

[@ericthecarguy]

Well, I haven't taken on more work than I can handle. That helps a lot. Thanks for the comment.

[@srconcepts1848]

That can be difficult in and of itself. It took me a long time to figure out that I'm not invincible, and I can't have 8 different project cars going all at once and still be as enthusiastic about wrenching. It also helps to pick a vehicle that's enjoyable to work on, not something you have to fight some engineer's bright ideas all the way through. @@ericthecarguy

[@insylem]

This was really neat to watch. I have a Jeep that had the rear diff replaced under warranty. Interesting to see what they had to do.

[@richardcoronado4072]

Thanks for sharing your knowledge I have a hard time trying to remove the gear bolts until I find your video and you say they are backwards treads thanks 👍 buddy

[@gaildimick1831]

Very nice video, clear, good sound and “no” profanity. Thanks

[@1O1Matthew232]

Thumbs up on presentation. Job well done, well done indeed.

[@tiptopr7629]

I have watched almost 160 videos on how to do what you just did in 30 seconds you've explained more and I've done in 30 hours of videos four thumbs up or two thumbs two toes while I'm impressed keep going with your videos holy I'm going to share this everywhere on Facebook everywhere I can I'm more than impressed and you know what you just showed me more than I've ever had to know never done mechanics before my life so I'm not KZbin mechanic I've done Vans everything else now I'm on to my Yukon I will share my picture with you if you'd like thank you very much please keep doing what you're doing like I said two thumbs two toes up thank you thank you thank you

[@nighthawkj30A4]

Camera man Brian haha he’s all doing things to pass time sleeping stretching. Liked the different camera angles too.

[@garrycoy806]

Nice, getting ready to do mine Factory 3.73s. just all new bearings and races. 10 bolt. Thanks!

[@elrayitoju]

Felicidades excelente información y muy clara y fácil de entender y tiene un bonito humor

[@davepelfrey3958]

I'm watching this series, getting ready to install a Yukon in my truck. Eric definitely makes it look easy. LoL.

[@mirzafarrukhishtiaqbaig]

Great work man

[@alphap_3693]

My Favorite Tool! A "BFH" Great Video I'm going to do this!

[@lonwillis783]

Your are a MASTER PROBLEM SOLVER Eric Good Job! Can't wait until you do the brake conversion.

[@ericthecarguy]

Thanks! The brake conversion is the next after the diff.

[@robertmedina6875]

You guys are the best so funny! I love your videos Eric and camera guy! Thanks for all the great videos! Lots of love from Bob better known as Bam Bam

[@knowledgeseekerr]

Fantastic Job Eric. Love Your insightful videos :)

[@ericthecarguy]

Thank you!

[@firstnamelastnameisallowed7943]

I like the rag trick! That's cool! The carrier caps so u don't mix them up I take a pointed punch and make a dent in the top of one cap and the side it came from do the same on the housing were the gasket touches. Then on the other side I'll put two dents on the top of the cap and same on the housing. Makes it fool proof even if u grind it to clean it the small dent will still be there!! :)

[@diesel1586]

One of the better videos I’ve seen on this

[@hischyoudontneedtoknow2896]

Wicked cool trick with the rag

[@AlexM-tx2vr]

Eric, I really like the production of this video. You covered every detail, at the right pace, and nothing was out of order. Great work. I can't wait for the second half ... and when you get the engine. Stay dirt. -Alex

[@ericthecarguy]

Thank you!

[@litoloco4fish]

Great job!!! Great video

[@scaryfear21]

Dawn, reminded me you early videos. Good old Eric is back.

[@hansenrl]

Ah, that early morning chuckle you get when you go "wait a minute" seeing the ring gear "locked" in the wrong direction only get confirmation when you see it spin when trying to remove the pinion nut.

[@mattblack133]

Great stuff man... thanks!

[@Peter_Riis_DK]

Saw the result in your talkshow the other day - that's awfully nice too. 9:25 - First thought you had cracks in the housing - but is seems to be casting edges.

[@dorvischatman2862]

Teaching me that I really do appreciate it

[@newls1]

good job eric... 2 things I cant stand the most are working on rearends, and doing drywall!

[@hawkie333]

I hate painting, myself....I’d rather work on a rear end!

[@nitroraptor70]

Good Camera skill man. You're the David Attenborough of the car world, Awesome info! I have a 66 Chevelle Malibu with a 10 bolt as well, I believe its also 8.5. I was gonna go the 12 bolt route, but funds are not there at the moment But its cool! You have given me the push I needed to rebuild my 10. I'm Rocking a SB 383,550Hp, 530 foot pounds mouse motor. I'm hoping to make this 10 bolt, stout enough for this application. Thanks for the info!

[@ericthecarguy]

Sounds awesome. Good luck with the build.

[@Draedo]

you can also look at the RPO codes in the glove box for what options it has. G80 is a locker

[@LDReptiles]

5:30 am in ontairo cant sleep so why not watch an eric the car guy video!

[@Corpse1984]

Don't you mean Onterrible ?

[@LDReptiles]

@@Corpse1984 well the weather has warmed up but justin Trudeau has to go!

[@AntonioClaudioMichael]

Great video Eric

[@chrisdavis7883]

Big thanks again to Brian for the great close ups. Feel like I'm right there in person learning.

[@justicefornone3411]

Good video, thanks

[@CapriceHunting]

you kept it all the way real with that harbor freight bearing puller explaination

[@user-io3hw7hx7q]

Awesome outstanding job have a great

[@daveogarf]

MAN, that went fast! My head's nearly spinning from the amount of information crammed into it! LOVE the set-up bearing interlude, starring Cameraman Brian! Always nice to see him in front of the camera for a change.

[@davidk8184]

Well done!

[@d_ak4918]

I wish I found your video before I learned my way of learning about those left handed threads on the ring gear 🤣

[@NeverEnoughPyro40]

I had the same Diff in my 05 Silverado Z71 4 x 4! At around 135,000 miles I started hearing a little moan from the rear! So That night I put it up on the lift and removed the cover, I could not believe my eyes! The differential was literally cracked all the way around, Yes it was literally two pieces! I never went off road or towed anything heavy, That diff would always lock and unlock when it was supposed to, But they are not that strong!

[@dumasmcgee]

Eric, for those heavy duty applications where your Milwaukee 1/2 impact just doesnt cut it, ingersoll came out with a new 1/2 that looks like your 3/8 does that has 1500ft/lbs 😁

[@wars1977]

Hello, Eric. I watch your movies from the very beginning. It's been so long time that it's hard to believe :). As always, great footage! Greetings from Poland. Luke

[@Jodeyjoe559]

in school we use a straight thin[1/4"]metal with holes drilled in it on edges, to bolt to diff case in place of cover one or two holes drilled in center of metal for a digital caliper to stick the depth end through a hole to touch pinion, subtract the measurement of piece of metal and thats ur pinion depth

[@ericthecarguy]

I actually cover that in Part 2. Thanks for the comment.

[@Jodeyjoe559]

@@ericthecarguy O i figured you would know about that, but thank you for all the videos and help youve brought me through the years on so many projects but most of all my 90,91, and another 90 integras and im happy to inform you my new car is a 07 Acura RL ;) i really get why you enjoy these vehicles so much and i hope to get a job at an Acura dealership as well after finishing my AS degree in science [automotive technology] December 2019. You have no idea how much you have helped along the way by not only showing real fixes but explaining the operation of what your fixing really helps grasp and retain the information.

[@ojhernandez2627]

Lol I'm sure we all found out there left thread by tightening when loosening 😁🤦‍♂️🤟 great info ETCG.

[@brunothehumble]

I think an ox locker would be a cool idea to put into a sleeper truck. Open in normal driving and pull a lever to lock it in when you wanna lay down the power.

[@aserta]

I like the aftermarket covers that come with a hooking lip at the top. Kinda wish it was standard, it's not that much more expensive to make than it already is.

[@VacFink]

"The right tool makes all the flippin' difference' seems like a ETCG t-shirt waiting to happen.

[@blockbertus]

Hey Eric, looks like you are... hammered. ;-D

[@throttlebottle5906]

the rag on the wrong side, I caught that as you turned the pinion. at least you left the blooper in there, keeps people awake and paying attention :)

[@garychandler4296]

Dagging files backwards dulls the teeth, ask any machinist! Thanks for the video, now I know the tools I gotta buy.

[@michaelsorrentino588]

great video

[@PapaWheelie1]

I wish you were local to me - but we have the next best thing, etcg on video 👍

[@motorbikemadness5773]

It is my o-pinion that this was a great video.

[@TheMojo487]

Thank you so much for this video. Most underrated channel ever I hope you get 4 million views one day lol subbed

[@TheMojo487]

building a 76 camaro you are a life saver lmao

[@Viperman200221]

Just as an fyi the bearing rollers make great sling shot ammo. Years ago my uncle owned a shop was constantly rebuilding rear diffs. I had an almost unlimited supply of rollers.

[@Boot_185]

Eaton Locker I have had them in all GM trucks and loved it if you dont abuse it or hard on it. Easy way to find out if you have the Eaton Locker look in the glovebox for the code G80. First time I ever seen the rag trick thanks I can add that to my collection. I mark the caps with a center punch passenger side gets the mark on top of the cap driver 2 marks on the top.