GM 8.25 IFS front diff rebuild part 2

[@druduncan6272]

10 years this video has been helping people build their differentials. Excellent work!

[@ButcherNumber1]

Been a heavy equipment mechanic for 25 yrs. and this is the most informative GM front differential repair video on You Tube! Great job Carl!

[@jiffytoast]

Do you know if the stub axle requires a retaining clip or not I can’t tell if his had one? Balmy stub axle keep falling out?

[@ButcherNumber1]

Yes there’s a retaining clip on there, as long as the groove isn’t buggerd on the end of the shaft stick a new snap ring on there and slap the shaft back into place. Those clips I keep in my tool box attained them from a local GM dealer, those clips alotta parts stores in this neck of the woods don’t keep on hand. So I keep them on hand In case I need one when working on these GM differentials. Just make sure that clip isn’t wedged somewhere back in that gear groove when installing new clip on shaft.

[@jiffytoast]

@@ButcherNumber1 thanks for the reply that helps a lot.

[@jiffytoast]

@@ButcherNumber1well crap I just watched another video and that guy put his in with no clip on it either and I don’t remember it having a clip when I yanked it out. I put a clip on it but then it wouldn’t go in all the way. Is the retaining clip staying in the diff and just being reused?

[@ButcherNumber1]

Sometimes those clips come out on the shaft and sometimes stay in the gear, if you can shine down in there and see a partial clip back in there, and it’s the old clip and yer shaft keeps falling out, dig that ole damn clip outta there and install a new clip on the axle and shove it into place, that old clip back in the gear is prolly shot to begin with! Hope this helps!

[@mattman6161]

I’m about to take on this job, and I feel a lot better about it after watching this. Great video! My outer pinion bearing piled up on me, stopped me dead in my tracks lol

[@GMC-ck6sv]

Thanks for taking the time to do this video. I have to reseal mine and this is very helpful

[@Mike-wh9dq]

First Class video - part 1 & 2 ! Very practical and your small side stories balance out the whole project as if we were in your shop with you and helping! I like the fact that you've included the numbers for things like spindle preload direct vs with oil seal. Am half-way thru my partial re-build of same diff - oil seals, needle roller bearings, snap rings, thrust washer but not main bearings or races. Thanks to you I feel totally confident now! Keep making videos!

[@chubbysumo2230]

you are the only one posting rebuilds of obscure stuff like this. No one has rebuilds of the front 7.2IFS diffs on YT. hopefully the front diff in my 2010 GMC savana AWD isn't too much different.

[@probeteam9936]

I recently grenaded my front diff on my 98 suburban (3.42 gears). I'm in NY..... no used diff in my state. Ordered a used diff from Texas. I sure hope I haven't bought a boat anchor. I heard crunching from the front end and my diff had no fluid in it. Let's all cross our fingers and hope I haven't wasted alot of money... GREAT video... thank you for your time... and you did an appropriate amount of talking... lol

[@toddcoleman4775]

Carl that was a great series. Thanks so much for the help. I've got some issues with my 2008 Avalanche that I'm going to have to address, and this will really help me know better what I'm getting into. Hopefully I don't have to do all of this but this was good stuff to know. Your not too quiet, and the fast forwards are right on time. Thanks Again.

[@bryanmcconnell776]

So Carl, I just finished up my Differential. Following your directions and using loaner tools from the Adv auto, I managed to do this. It went exactly as you made it seem it would. The crush sleeve was a ball buster and laying hands on an inch lb Torque wrench was an odyssey but in the end, you gave me the knowledge to do this. Thank you sir!

[@Broncocarl92]

Awesome! Glad it helped you out.

[@DeepCoverOp]

One of the best videos I have ever watched. Thank you for taking the time to make it for us.

[@roadrash0795]

First videos I have seen on KZbin where anyone went through step by step instead of just talking about the jobs, I'll be watching and learning a lot more from you my friend, thank you!

[@TTOCS11]

Awesome Carl, watching you work is like watching a high end surgeon! As a know it all cocky 19 year old I rebuilt the front diff out of a Volvo 35Ton quarry hauler, it howled like a wolf LOL the diff weighed 1/4 ton. I never did that again had it set all wrong!!!

[@williamdon3442]

I can read about this and it makes no sense. Now that I see it it totally makes sense now reading about it again. I know I’m not the only one you helped out. Thanks a lot.

[@spelunkerd]

Watching how easy you make this look, it is easy to see why guys pull the diff off to do this on the bench. A good brace to hold it steady is obviously critical. Thanks for posting, I always wondered how this is done by a pro.

[@jonbradley4789]

I wish I had seen this before spending on a Safari diff two years ago. This video is Very informative. Nice methodology. Thank you for taking the time to patiently create this.

[@Broncocarl92]

Thanks for the kind words glad you liked it.

[@jonbradley4789]

Yeah, well, this kind of instruction helps. Creating knowledge is a part of something that we all need. So keep this up. Very appreciated.

[@Bigjamez2011]

Thank you for this super helpful video ! I am getting at my front diff tomorrow ! 260k miles and it’s making some whining noise so time for a rebuild .

[@_yeager]

I been out of the trade for 15 years and have to tackle my front diff, this is a nice refresher. Thank You.

[@Dugar1]

Your awesome bud. I have a 2002 Yukon Denali and the front diff is making some noise I'm a certified gm technician and I was still kinda skeptical about it. You've really helped me out a lot I admire what you do. Thanx a million

[@garycampbell8663]

been a heavy/ mid truck mechanic for 39 yrs good job in video keep up the good work

[@davemac39]

Great job You’re a mechanics mechanic Straight to the business We appreciate you 👍🏻

[@chrisinestes]

Thanks! I'm about to tackle the same job on my '99 Sierra 1500. With these 2 videos, I'm sure I'll get it right the first time.

[@bryanmcconnell776]

That KUKKO puller is priceless. Pricey though. I'll have to just admire yours Carl.

[@Broncocarl92]

Bryan McConnell one of the best of my collection.

[@Eastern_SA]

Thanks for the videos part 1&2. I came through them because a local mechanic told me that front IFS diff cannot be rebuilt and that I have to get full replacement for a junckyard instead of replacing the ring & pinion like the rear. It looks more difficult than the rear as seen in your video.

[@abuisst6202]

What a great pair of videos and thank you for taking the time to share. These are way better than the TV show featured lessons. I liked your improvising with pullers instead of presses etc too. Thanks again.

[@MrChevelleman70]

not a problem, thanks for walking through the process of doing it, i need to replace the seals on my 99 silverado front diff to stop the leaks and your vids will help me replace them

[@alisongendreau6359]

Thank you, thank you, Thank you. You just saved my husband and I $1600 on having a mechanic rebuild the front diff. You are awesome

[@customsgonewild903]

Hey Carl thanks for the video the diff i am rebuilding was totally bone dry with missing parts lol ie: bearing cages and needle bearings the adjuster was froze up. The video was very informative as far as complete parts. Helped alot.

[@LUCI1F3R007]

I have to say, this video is top notch. Takes some of the anxiety I have about doing an IFS differential out.

[@Broncocarl92]

Thank you and Happy Holidays!

[@ButcherNumber1]

Great video carl! Very informative and well put, repaired a boat load of these in the mid 90's. Well done!

[@darknes7800]

Awesome video! The workbench with the pivoting case holder makes all the difference!

[@TYMWLTL]

Good video of a process a lot of people are afraid of. Common sense and a lot of tools can get a guy a long way in life. Thanks.

[@HarveySpooner]

BroncoCarl, Good video, the little things like the pattern of the tooth bite on the gear makes the whole thing worth watching. Thanks for sharing!!! The neat garage always impresses me.

[@DavidWeidner10]

Fantastic video. Mine is different as its a 2003 GMC Savana 1500 AWD, but enough was the same for me to get a firm idea of how to proceed and get mine done. Unfortunately GMC has discontinued the diff used on mine....so I had to just look up all the bearings and seals. Apparently they want you to just buy the whole new front diff rather than rebuild. I just took mine apart following your video and recorded all the seal and bearing numbers as I went then ordered them as I could find no rebuild kit. Thanks for the great video.

[@jacobgomez2682]

As a former gm tech now independent I'm going to use this vid to train guys thank you👍

[@OKRODDER]

Thank you very much for sharing. You talking through the job was very helpful in understanding the procedure.

[@cashonly731]

Taught me a great deal ,Thank you so very much for taking the time out to help me learn this process .👍

[@nedfisher4670]

great video.... no one ever seems to want to talk about GM ifs diff"s . thanks bro......

[@scottmarshall6766]

Nice work. I was surprised no sealer on the yoke splines or oil on the seals. I even put a thin film of Permatex #2 on the OD of the seals, but most of them these days have either rubber overmolded onto the OD or a factory applied dry sealer. Maybe I'm too fussy on those, but I hate the thought of rubber on metal without oil, and the outside chance of seepage thru the yoke center. I do see a lot of the newer stuff has an o-ring on the pinion splines or s seal in the washer.. I've got a Tahoe with 220k on it and the DS flange feels like it's got a bad bearing, along with a little noise, so it looks like your video will be helpful. Thanks!

[@stang1966gt]

Great job to share your knowledge. My 1500 has 100k miles. Diff sounds crunchy in 4x4 and the plug was covered in metal exactly like yours. Left seal is leaking. I would love to rebuild it but need to check on tooling costs and available rentals. Thanks again!

[@kierstenhartje6058]

Thanks Carl I appreciate you being kind enough to pass on your know-how! Learned a lot about front ifs find diffs. Thanks again Cory!

[@henrycastiel7974]

instablaster...

[@tjoyce81]

Watched part 1 and 2. Thanks a LOT for the videos on this particular unit. It helped me out big time!

[@dakotadale567]

Great job with this video. I learned a lot. Learned that I don't feel like doing this job myself (hard to get inspired when you're a mechanic for a living) but I did learn a ton!

[@pantera1959]

Great video, very informative !!! Thanks Carl.

[@pauljordan756]

awesome video! thanks for helping us Chevy / GMC guys!

[@bradkuhn4829]

Great video Carl, I've never done one before so when mine went out on my 03 Escalade, I followed your videos for this and everything turned out great!! Keep up the good work!!

[@Broncocarl92]

+Brad Kuhn Thanks for watching! Glad to help out.

[@YIPPIEIMWINNING]

AWESOME VIDEO....much confident now to do a chevy front diff breakdown and repair

[@Bigjamez2011]

Best damn video ever on the front diff rebuild !!

[@rmp608]

Thank you!!!! Owe you a cold beer or 2!!

[@polishguy579]

Great video, but wish you went into a little more detail about re-installing the guts for the axle tube.

[@baytreeelk]

Thanks for excellent vid. I've got a situation developing and of all the diff repair videos yours has the best info. I'm HD by trade but been dissabeled last 3 years. Really miss having the shop with all the tooling and parts washer etc. Everything you've done is just the way it would be done at our shop so even though I'm familiar with the procedure I like to see it done just in case there is a different/better way to do it. And we don't work on much light stuff. PS I like that KUKKO puller setup.

[@patrickspradlin9788]

Thank you for the video, this is what my upcoming weekend is going to look like.

[@tomasaronjonsson2469]

Thank you, great video! need to rebuild my front diff on my Chevrolet Tahoe 2000, and this helps to understand and learn that.

[@scrimmy6969]

Just found you and your videos. I watched Part 1 and now Part 2. I just subscribed. Thank you for the information and the time you put into the videos. Jim

[@TTavenier3]

No that sums up what I was thinking. My mechanical skills are above average for the work I do but it's all those fine specs that get me worried. I'm trying to get this done before I go to Florida towing a trailer from Iowa so I want it right the first time. Thanks for the help

[@qkcrl1953]

great vid,thank u for your time please do more

[@gonz9999]

Very well done,excellent video,i will now have to look at others,thanks

[@stevefordfreak]

im right in the middle of an ifs 7.5 rebuild-but this is still a helpful video,thanks

[@philfixedit4874]

Perfect video very informative thank you

[@joecameron3512]

Awesome video and you know your stuff job done right 110 percent

[@547Rick]

Great job! Thanks! Your video's are always very informative and I enjoy them.

[@fpsevanj]

Helped me out bigtime on my Suburban, thanks!!!

[@Broncocarl92]

No problem glad you found it usefull.

[@dannywiley4072]

I am about to tackle this myself. Ended up with an 01 Silverado that was lifted. Has a few little issues. Leaking front diff and 230k miles. Figure it is time for a rebuild. Also need to tackle the transfer case.

[@MACTETI]

Thank you. I’ve gained plenty of knowledge from this.

[@weslake8358]

Great video. A lot of helpful information. Thanks for sharing!

[@anibalnoriegaruiz14]

Muy buen trabajo no capto el inglés pero solo con ver el video es más que suficiente para aprende eres un gran maestro

[@jorgeluisgonzalezr.150]

Es un gran video... Gracias por dedicarle tiempo en hacerlo... Me ha ayuda y orienta para mi trailblazer 2007. Gracias

[@Broncocarl92]

de nada .. gracias por ver

[@florianrobert4067]

well done job and very instructive

[@Satchmoeddie]

I like using Hylomar for sealing cases, covers, gaskets, etc. It used to carry a Mercedes Benz part number when I first discovered it, but it has always had a Rolls Royce & Pratt & Whitney part number, and now Ford is using it.

[@presqueisle69]

Great job I enjoy watching

[@spelunkerd]

It seems to be common practice to do the final adjustment of the ring gear backlash before the RTV is applied between the two case halves. Since the threaded adjusters are mounted in each of the two halves, doesn't the thickness of the RTV affect the backlash? Wouldn't it be appropriate to remeasure backlash after the case is installed with the RTV, then do a final adjustment of the threaded adjusters, then finally install the seals and stub shafts? I'm asking this in good faith, I don't have any special expertise....

[@moninchow]

Thanks for the video. Very informative. I was hoping to takle this job myself but without air tools I'll definitely have to pass.

[@donniekachel9236]

Great video!!! Very detailed with all the info needed. Definitely a top notch job, thanks for taking the time to do that for all of us out here.

[@GreyGhost-r4z]

Awesome video. Thanks for sharing

[@stoeger40]

Also, where did you pick up that bench mounted hangar apparatus with the arms you're using? Pretty slick!

[@Mr.BigweldNBTX]

Very helpful video. Thanks for posting

[@stoeger40]

Outstanding tutorial! The flange on my 2000 silverado opposite the tubed side has a little bit o play in it so I'm assuming not only the seal is failing but the bearing as well.

[@lakesideranch]

Awesome series Carl Very well done, picture quality is excellent brother !

[@dLikesDDs]

i filled mine before i put the inspection cover back on.... great video!

[@doctoreeeveal]

Man, you know your stuff.

[@Broncocarl92]

TY

[@chubbysumo2230]

so, this applies to the GM 7.2 IFS front end that is in the savana/express AWD vans, but the difference is that the bearing preload is much larger, and there is no inspection window, so you need to paint the gear marking compound, snap the case together, spin it a few times(not from the pinion nut), and then take it apart and inspect. Also, the case for the vans seems to lack any sort of gasket or sealant, and in checking with GM, it is a machined seal, so it is important to use extremely little of your choice of gasket maker(you need some, not much), and then torque the bolts in a crossing pattern down to GMs spec. I wrecked my 7.2ifs front end in my savana by not torquing the pinion nut and setting the bearing preload and crush ring down correctly.

[@hddm3]

great channel and great tech

[@tracyjames4125]

very very helpful video thanks carl

[@Broncocarl92]

+Tracy James Thanks for watching!

[@ruudnicki]

Awesome video, will be looking through your vids in the future for assistance!

[@Broncocarl92]

no problem glad you liked!

[@jevchance]

So many wonderful tools :) Good show Carl.

[@NissanAltima2005]

thanks a lot. Watching that was enjoyable for me too.

[@pharper777]

Hi Bronco. Great video and very informative. I learned more form this video than any repair manual. I'd like to know how you got the old bearing raceways out of the housing. The video only shows the new ones being installed. Thanks!

[@Broncocarl92]

If I remember correctly I knocked them out with a long bearing punch. Sorry for leaving that out, not sure why but sometimes can't get it all on video. Thanks for the comments!

[@coldsteeloffroad]

A piece of steel pipe & a BFH works also

[@JMun-pu7mk]

@@Broncocarl92 I'd like to ask you a question about the left front stub axle. I had noticed mine had some wobble, but no leaks. Couldn't get it pulled, so took the diff apart, drove it from the inside. Replaced needle bearings, both sides, inspected the large inner bearings and races, all looked good. Reassembled, reinstalled, on a lark, took my bar, to check left stub axle shaft, same amount of wobble! I'm a bit confused now.

[@Broncocarl92]

@@JMun-pu7mk I'm not sure what you mean by wobble. Do you have axial or radial play?

[@JMun-pu7mk]

I would call it radial play. With everything connected, when I take a bar and place it under the half axle inboard plate that bolts to the stub shaft, it will rock up and down. The outer needle bearing that I replaced did show some wear on the ends of the roller.

[@MrSparkums]

Awesome, thanks for sharing the expertise!

[@DIZEMANPHOTO]

Super Duper video. Helped me a lot. Thanks!

[@TheWreckingYard]

Nice work Carl

[@saifkhalid5069]

Thanks for this video you did a great job.

[@m.almaidee8682]

Waaaw

[@sg255010]

Awesome video!! Will help major when I install my e-locker!!!

[@Yaheuben66]

Wow-- your bench top was taking a fair amount of torque crushing that sleeve in there-- what is the function of "drag torque"? I like these vids-- my jaw always drops at the complexity-- I get confused reassembling a flashlight after replacing batteries

[@Konadawg99]

Great video. Thanks for posting. I’ve always put grease on the axle shaft oil seals before installing the axle shafts. I see you didn’t do that here? Must not be critical? Mine always seem to leak if I don’t add grease. Thoughts?

[@CUSTOMWORKS7.3PSD]

Thank you very much for your video I'm no slouch around vehicles but rear and front diffs I always shy'd away from because of the pre set lash ect so even if I mess up the first time I'll still save a thousand bucks from a shop rape.

[@GreyGhost-r4z]

This is all about the right tools

[@josephvalenti439]

FIRST CLASS JOB,THANK YOU !!!

[@phindrew]

Awesome job doing a walk through. I actually just stubbled into your page so ill be looking at alot of videos. I do appreciate what your doing and like any good teacher i have one thing to criticize. Its great when things go back together perfect. You hit the spec every way. Life is good, bird chirp, rabbits are humping. So when you put the indicator marker to see how well the gears meshed. It was bang on. So what if it is NOT? Where is the adjustment or retorque or whats next. Other then that great job. Awesome, and you did mention that you dont talk enough, but thats being camera shy. Actually at the beginning of part 1 how your calling it shit, and crap is why i started watching. There's ussually more swearing in the shop lol

[@Broncocarl92]

Tahoe Rebuild Thanks for the comments... The nice thing about rebuilds is the fact the bearings are built to tight standards so when we are replacing them only, the adjustments are usually bang on. If I replaced the r&p or the carrier I probably would not have been so lucky. In that case we would have to rotate the adjusters to move the ring closer or further away to the pinion, or add/remove shims to the pinion. I have a DANA 60 that I have to do for someone as soon as the weather warms up so maybe you will get to see some adjustment on that one.. As far as the talking thing maybe not so camera shy, I just tend to get into my work. I like to have music going but that is a no no for KZbin. Thanks for watching and the sub!

[@jorgefonseca9225]

nice vedeo mate really good

[@danfilm4]

Great Video I learned a lot thanks so Much I have to work on a S Blazer front Diff

[@Broncocarl92]

danfilm4 Thanks for watching and commenting.