If I was 18 again, I'd be packing up to drive to Utah. I'd sweep floors, take out trash, wash cars, clean tools, all for free just to get to work for this guy. What a teacher! I can only imagine what you could learn in a year.

Dave is an excellent teacher of our great industry.

These longform videos are fantastic. Such a great teacher! Here Dave is teaching not just how to work on a differential but also how to guide your young employees. Thank you!

I had a shop teacher that would yell at some of the students when they messed up, your calm disposition is far more effective than yelling.

I’ve taught Aircraft Mechanics for 30 years in college and Dave is a Master mechanic and teacher.

It’s nice to see you passing your knowledge on to the next generation. Your a good man Dave.Bless you.

Dave is such a phenomenal teacher. He achieved full mental engagement from start to finish. Great job

Gonna be honest. The way that you train your new mechanics is how I wish I had learned. I went to professional schooling and learned more in the shops than I ever did in school. Well done sir.

All i can say Dave is my Dad has gone to be with the lord and everything you do is how my dad taught me. Im retired now but I wrenched for close to 45 years and ended my time working on gas and steam turbines with GE. My dads love and knowledge carried me through life. Its like seeing my dad when I watch you. Thank you and god bless

I Can't get enough of these videos

Nice job Dave! I've been setting up and building differentials for over 25 years and I just love watching how others take on the same jobs. I never know if I might learn something new.

“If it wasn’t hard, everyone would do it. It’s the hard that makes it great." Thanks Dave, your knowledge and presence is what make these videos great to watch. Thank you sir.

What an education Dave is providing this young mechanic. This is such a great channel - who knew a differential rebuild could be so interesting!

That younger man def learned some great things today!!! I love to see someone that cares about quality and honesty in the business of working turning wrenches!!! Great job teaching!!!

This is an educational masterclass. I've not yet found anywhere better to get all this much knowledge, experience and understanding all in one place. Many thanks Sir.

Dave, i really appreciate you teaching the younger generation what we learned from the older, more experienced mechanics of our day. The world needs us and its awesome that you are passing down the knowledge.

Love seeing people teaching. One tip for the young lad is I keep an old bearing race for bearings I do like hub bearings and diff bearings and cut a slit in them with a 1mm cutting disk. Then you can use that as a drift or in a press to fit new bearings like at 17:00. Dave did exactly what I would have done at 22:00.

This guy is a true Master teacher . As a plumber/pipefitter at a VA hospital, i never trust someone else's diagnose. Verify it myself . And btw , i teach the apprentices, you dont trust mine , verify it yourself . Ive taught plumbing code for over 23 years . When asked , aren't you afraid that you are teaching your competitors who are much younger than you ? I then ask , guess what this 63 year old man has that you guys dont ? You cant buy it , steal it either . What ? Experience ! We try to pass it along but at some point , there is no substitute for on the job training. Love watching this . Great teachers dont have to act like they care and their students know it . I would bet this guy once dreamed of having some old master mechanic mentoring him back in the day . He became that guy . Ask me how i know .

One thing that makes this such a good video is that you are teaching someone and anticipating directly before you give a quick concise explanation then keep it moving w o any bs. No stopping in the middle to discuss useless things. All info on target.

KZfaq has come a very long way and I’m very happy I found a channel like this. Thank you for the work you do

The hardest thing for a mechanic, let alone a learner tech, is to work under scrutiny. The cameras are showing the world how you work!😂 Kid is doing great. The enthusiasm he has is good stuff. Dave is a super instructor..

If we can’t guarantee, we won’t sell it… love that quote. Much respect Dave

All that I have to say is this: The only things that anyone would have in the heart about having this kind of teacher, is gratitude and respect. such a great channel.

Mr dave, you are incredible.. As someone that's worked in about 20 shops, Every now and then you find a MONSTER of a mechanic. Mr dave is one of those people.. keep up the great work

Mr. Dave, I have been an Automotive Technician for 30 years, and I enjoy listening to the way you articulate the process, sir. I currently work at Ford. I would love to be involved with what you are doing. I'll be watching. Anyone who thinks they can't learn something every day is lying to themselves. Heck, we all have different ways of skinning a cat. Keep doing what you're doing, sir. Good luck on Discovery. Nice video.

Dave... (Speaking as a retired 30 year, old school veteran mechanic and 15 year instructor)...you're a fantastic purveyor of knowledge! Love how you take an obviously complete rookie and teach him the right way to perform the task at hand. This will keep him from learning bad habits or unwarranted short cuts. Obviously he will still need a lot on on-vehicle experience to become a competent mechanic. However, with you tutorial skills and dedication, he should come out the other end a TRUE master mechanic.

I love watching someone with this level of experience, and skill is so refreshing. These types of shops and technicians is what saves the industry.

I was a mechanic for 9 years and owned a shop for 7 of those years. Watching you videos makes me miss it.

That is one lucky young Tech to have a teacher like Dave go through this procedure with him. Dave, you are an excellent teacher. I wished that I had someone like you explaining and showing me how to do something like this years ago.

This is so rare. So often kids are given a job like this and are expected to get it right without any real training. I can also guarantee you this will not be the only time that Dave helps him with this. Takes a couple of times to drill it in and that's okay. I can already tell this young man is going to make an excellent mechanic due to natural talent and great instruction!

You know why I love watching your videos?? Because you live by the modo you only keep what you have if you give it away!!! The fact that you explain you repairs in detail says allot about your soul!! You Mr are a kind thankful soul that’s why you’re so successful you are a rare breed I hope you see this message keep teaching professor!!!! I watch all your vids because I know you’re teaching good knowledge !!!!

It’s great to see a young technician working hard to learn the fine details of a task that many seasoned techs get wrong.

Great video Dave. I’ve been in the industry 37 years and I must say you are a great teacher!

Makes you appreciate the engineered beauty of bearings and gears! What a job they do for us!

Another great video Dave. Back here in the UK July 1972 I was just starting my apprenticeship as a mechanic with a Ford main Dealer in Enfield North London. In 1970 Ford UK had launched its latest model - the Cortina MKIII but by late 1972 these vehicles where suffering with increased rear axle noise levels. On the TSB's it was referred to as "axle howl"! These axles were know as the Salisbury axle and is much the same as the one in your excellent video. For the next 18 months plus we were inundated with dozens of axle rebuilds every month and all under Fords warranty. Watching your video takes me right back to those very hazy days where we could rebuild a Salisbury axle almost blindfolded. Pre load, backlash and collapsible spacers are all so familiar! Thanks so much for the trip back in time. Stay safe. David. Hertfordshire UK

“My old man shit tells me we’re on money” I love it. Dave you’re awesome!! Love your sense of humor!!

72 inch pounds on the pinion bearing is crazy high Spec is 15 to 25

Fantastic teacher. Straight to the point and articulates like the professsional he is. I would have been honored to have been one of your students.

I hope this young man understands what a privilege it is to work under someone like this

thanks for the vids Dave. Please keep em coming. I've been a backyard hobbiest do it yourselfer my whole life and can't stop learning about this stuff. Appreciate the detailed explanations of everything you do! Cheers

Howdyyawl from the land down under. Well done Dave! The young fella learnt alot. Be proud of him. We run a farm in OZ & you have to fix every thing. Nice to see someone who is willing to teach. Keeping it real😊

Us "old guys" are still relevant. Just like Dave said, "my old guy senses". These are developed over 20+ years of doing stuff like this. To train a young person with these skills is so valuable. Young people these days usually don't have a Dave to teach them, and then must learn as they go all the while pissing off customers. Love the teaching, Dave. Every step you went through I was saying it out loud as if I was helping to teach this young buck. LOL Keep doing what you are doing!

I really appreciate a mechanic who takes pride in his work. Well done dave teaching the youngsters.

Love the patience and knowledge you are trying to give the young man and just the overall positivity you are putting out there. Really enjoy the channel

When I saw all the writing on the parts my first thought was it’s been rebuilt before!!

You are a great teacher, you not only show the correct way to do a job but the safety aspect as well. Safety should be "paramount to everyone", doing this type of work! 👍👍

Love watching an experienced mechanic teach young guys about the "old man shit" Thanks for the great videos!

I also do the same procedure as you with the screwdriver to the ear except I always used a wooden dowel. It's reassuring to see someone as accomplished and thorough as yourself doing the same. Your operation is the pinnacle of the trade! I wish there was a service center such as yours available to me when I was a young man getting started. Keep up the good work! Thanks and Best Wishes, Mark

Great video Dave. Only problem I see if set the example with the new guys on safety. I saw plenty of shards of brass flying when pounding on that drift without proper eye protection or when using the press. Your eyes are your most valuable assets besides your hands so you have to protect them at all costs. It great to see the wealth of knowledge being passed on to the new guys who are hungry and willing to learn.

bravo Dave ! Dave correctly explained the same principles of tools, procedures to achieve proper preload, run-out, and back-lash. Dave just did what a lower unit on an outboard (boat) motor has. Amazing stuff, Dave!

Passing on Old School knowledge. The world needs a lot more of that. That is awesome.

Clam shell bearing puller makes removing those bearings extremely simple.

Really great teacher thank you for sharing this with us 🇺🇸

No BS, all business - love it. So great to see a young face soaking in not only the technical information, but the attitude and approach to it. 👍

Easily one of the videos on ram repairs I've seen!

Love your videos! For future reference check out pinion/carrier bearing pullers. One of my favorite tools in the shop! No harm done to the bearings or shims and comes off like butter with minimal effort.

You sir are a true gentleman. Sharing your lifetime of knowledge with a young mechanic. My hat off to you. Thank you sir.

This guy shows a real class in the way he works and teaches, iv been loving the KZfaq shorts for a good while now, never pass them up.

when semi's came out with greaseless u-joints I thought they were crap but I seen a lot with over a million miles on them

Not sure where you got your bearing preload on those new pinion bearings? 30 inch lbs would have been max on that

What exciting and awesome videos to watch. Thanks Mr. Dave!

I enjoy watching Dave and raian Ray only! .was a GM tech for 13.years. Independent shop tech for another 10 then a fleet owner operator of class 8 dump trucks and log haulers. But I still enjoy Dave and Rainman Ray. Too old and broke up to do this work everyday but I enjoy seeing these.guys do their thing. Way to go guys. Wish I wasn't so old and broken up

Dave is a great instructor. He teaches how, and why.

16:13 Definitely a bit painful to see the new guy ding the bearing race. Most noticeable on the top side. Doesn’t look like the mark affects the bearing surface, but that dude definitely needs to be more careful in the future.

This is awesome to seen Dave teaching this young man, he’s direct but patient and makes sure his student is taking in the wisdom Dave is blessing him with.

This is becoming one of my favorite channels

That’s alot of pinion bearing preload 😮

I love your videos in general, but this one made me wince. I suggest you buy and use a bearing race installer kit and seal installer kit. Using a punch to install a bearing race is not the best approach. Heating a bearing is really a last resort. Don't beat me up, but I have rebuilt hundreds of differential units, and there are a lot of things I would have done differently. Possibly, stick to your expertise of rebuilding engines!

This man right here mr dave is such an awesome technician/teacher. I went to school for automotive diagnostics way back. I dont even work on cars but love watching your videos

Your teaching style is that of my mentor. Explains and leaves room for questions to be asked to reinforce what’s being told.

Awesome video. Love hearing the very educational Mr Dave give his lessons. You're awesome Dave

Damn, Dave working/ teaching is awesome. Leaned alot. Thanks.

Loved this video! For the last 40 years, I'd read on how this procedure is done. Finally, you have created a video on how to actually do the job! Thank you for a great and intuitive visual lesson.

“My old man shit tells me we’re on the money” classic!

A master at work. Dave is a great teacher, I’m learning as well.

Thank you! I am doing new pinion bearings for the same reason this truck was being wrenched on! Sure appreciate watching and learning!

These mechanics are lucky to have a good teacher like Dave

49 years old and found good information today. Right handed marks the right side for memory.

Dave's been turning wrenches for along time. A man with his knowledge is absolutely priceless!!

Very very well portrayed in a manner that’s easily understood by people with all variations of experience. In other words any shade tree mechanic can watch this video and go out and replace these parts with ease. I’m really liking these long form videos on this type of stuff. I already knew how to do it but I still learned a thing or two. I always do when I Am watching your videos.

I was born in the Salt Lake Valley and raised in eastern Utah in the Uinta Basin where I worked for my dad in his garage and I see you teaching just like he would do with me, he served on a Navy Destroyer in WW2 and as a result he never graduated high school, the local community college wanted him to teach auto mechanics but couldn’t hire him without a high school diploma, I have always thought about the loss of knowledge and his way of teaching as it exactly what I see from you, your mechanics are getting paid while you school them, I took everything I learned from my dad and applied it to my trade as a heavy lift helicopter mechanic and it all starts with being clean and organized, I try to emulate what I learned from my dad and what I see from you in how I work and train the new guys coming in. After 30 years living in Oregon I am now back living in Utah and still working in Oregon but the lessons are here for every one and it’s this start clean and stay organized and be the professional you are being paid to be. I’m sorry this was long winded but I really wanted to highlight how your teaching, very nicely done, thank you for what you do and how you do it.

Dave thank you for being such an in depth and honorable guy. As an apprentice of carpentry I know there’s nothing better than pairing up with a patient and knowledgeable teacher. I started out in the trades as a machinist operator and had a wonderful teacher you remind me of. Unfortunately I was young and squandered a good opportunity but you live and you learn. I love the videos you make, and it makes me very eager to get back to the machining/mechanic world. I love carpentry but banging on concrete forms all day is only so exciting and mind opening… keep up the amazing content. Loving the long-form and in depth content. God bless!

Awesome content and to the lucky apprentice appreciate what Dave is imparting, the knowledge of time spent on the wrenches makes your life sooo much easier 👍

I really like how you explain the procedures to new employees, instead of just letting them figure it out on there own. I do them same thing for my coworkers that don't know what's the correct way to do things. Always double checking your work including torque specs and rolling torque is crucial in the job lasting a long time. Excellence at its best Dave.

Dave takes so much respect in his career. He spent so much time explaining to the young gentleman with him how to do the job right. Based on my time as a technician, we learnt some of this in Automotive school, but that was only during each semester. After that things got forgotten until you went in the industry again. Most dealerships will just tell you to read the service manual and take something apart and put something back based on that while that is true, it’s so much more confidence inspiring when you have a mentor teaching you the way he did.

Love the longer more detailed videos! KEEP UP THE GREAT VIDS! Thank-you

Dave is a really experienced I wonder how many things you broke or damaged with your knowledge it's worth a lot you have a good heart passing on your knowledge to better people around you ❤ Much respect and a big thank you ❤

I love the way you teach Dave! The young men that work for you are blessed!!

I am absolutely not a mechanic, in fact I am a software engineer, but I am just enamored with this channel. The mental methods that Dave displays can be applied to almost anything. Keep it up, boys.

I have a Dodge front end rebuild coming up soon. I've been in the trade for roughly 20 years now, and I never can know too much about any tear down or rebuild. Love the refresher course and the content you provide, always. Thank you for what you do, and your professional point of views.

Hands-on teaching from one of the best. Good fortunes, Coach Dave!

Dave , on lifted off road trucks like that, always use heavy duty gear oil such as LUCAS or REDLINE. Those guys go mudding with a non geometrical out of whack suspension and chassis that PUTS A MASSIVE TORTURE on the STOCK diffs, transfer case and transmission. We replace with heavy duty fluids and install a external transmission cooler and sometimes lower temperature thermostat. But something ALWAYS breaks on those lifted trucks 😮

Great job Dave. Just a home mechanic that knows his limits. Fascinated by the amount of detail in your videos. Makes you feel like Im right there with you learning from a master.

I've rebuilt a lot of differentials, but its been a long time since I've watched another professional do one from start to finish, and I've never seen a craftsman technician do one. Its great to see what your doing wrong (if anything) and what your doing right (if anything)!

I was mechanic over40 yrs and done many differential rebuilds Your coverage is best I've seen on any program Very accurate in detail and thank you for no loud guitar music Great job enjoy your interesting videos !

I love the way he explains everything so thorough ❤

This reminds me of myself. Working next to my boss. I was a apprentice for 5 years. Worked for him for 19 years. Now I have passed the things that I have learned to over 15 apprentice.

Great job,Dave! Teaching a young man good skills to make an honest living.

You're skill and attention to detail should be the goal of every technician. I almost want to come back to work as a technician, but only if I could work in your shop.

You can sure tell that Dave has just started working as a mechanic? Lol Thanks Dave for posting your years of knowledge with us.