Alternator repair : Noisy Bearings replacement

This one is more detailled and serious.
The work is simple,no fancy tools required.
If you don't have an impact gun,just use a rubber band and a belt,a big pipe wrench or an old accessory belt to avoid the pulley to rotate when you loosen the nut or tighten it.

[@bmw-e30]

Clear explanatory video without need for silly loud music and unnecessary chat. Well done.

[@michaelovitch]

Thank you : )

[@olddavid4]

That was the best "how-to" video I have ever seen. You deserve some kind of award for doing it w/o words. Loved the smiley face when the hot-cold to shrink and expand worked.

[@michaelovitch]

+olddavid4 Thank you very much : )

[@valdemarzanini6477]

O que presizo e pecas pra alternador tampas mancal rotor estator o rotor cuase reponho novo por causa do balancimento a maioria nao bate com recondicionado

[@TopFlightSoldier]

This has to be my absolute most favorite KZbin video on replacing bearings

[@michaelovitch]

+Fernando Medina Thank you very much : )

[@vipulsenjaliya3584]

@@michaelovitch

[@BellesetBeauxDad]

This is the best how-to video I've seen. Very informative, with no blabbering, bad music, or cussing. Thank you very much!

[@michaelovitch]

+BellesetBeauxDad Thank you : )

[@HUBBABUBBADOOPYDOOP]

Hey, Bro- I just finished a *full rebuild* of my 1989 CS144, and I used your "freezer trick" for the Rotor and *outer* bearing. It worked perfectly! *Thank you so much!* I will be posting a slideshow of my work to my channel in a couple of days.

[@michaelovitch]

+HUBBABUBBA DOOPYDOOP Yeah ! I'm happy it worked well for you : )

[@kbzipper]

Nicely compressed into video without sacrificing any details of the job. Thanks!

[@riquerod8594]

AWESOME VIDEO, No yapping and right to the point.

[@michaelovitch]

Thank you : )

[@georgestyer2153]

I agree no yap..but a wonderful feeling of pride for a job well done. Anyone can spend money on a new one. Top job..Top man

[@navamani577]

Thank u

[@lewishughes7740]

My alternators just gone and I don't see why I can't do what he's just done, great video!

[@arthurch9580]

Great mechanical skills. Thank you for making the video. I will try rebuilding mine.

[@bobgreene2892]

Best quality, HD video camera views I have seen. A tripod-mounted camera cannot be used everywhere, but certainly helped here. Your removal of the bearing with an angle grinder shows both care and practice, especially the inner race of the bearing. Continuous sound and screen captions for important points helped orient us, but more caption detail on some parts might help-- especially on the heating and cooling of the aluminum housing. Or, perhaps something as simple and direct as your voice, describing the process in general terms and adding detail, as you go..

[@narancs5]

For those people, who happen to not have an angle grinder: *Use a bearing puller.* Also it is much easier to remove the pulley nut, if you pull the alternator apart, then put the rotor into a vice.

[@richfuller]

I was totally going to make the same suggestions as someone who has a vice and a bearing puller>$20. Vs potentially destroying your alternator with $70 grinder which I have no need for. LOL

[@sponiebr]

Loved it! Seriously, this was a great how to. Even though it made me cringe when I saw the angle grinder I have to hand it to ya, we work with what we have. I LOVE IT! Well done dude.

[@michaelovitch]

Thank you : )

[@techdavey3486]

I've repaired a good few alternators and I've never known a rear bearing to require replacement. Front bearings can usually be levered off with a pair of small pry bars as they are only pressed on, not shrunk-on. A Chinese generic bearing used to only cost 50p so even after paying for Loctite for the screws there is a huge saving over buying a Service Exchange unit. Allegedly some of those Chinese bearings are made on the same production line as the top brands but they don't put a trademark on them.

[@chandandogra1366]

RactifaR plate nikalna kaisi

[@bharathgaddamadugu6329]

At what cost?

[@chris77777777ify]

Never worth buying cheap unbranded bearings as I’d rather get quality & support companies who care about quality

[@chris77777777ify]

Never worth buying cheap unbranded bearings as I’d rather get quality & support companies who care about quality

[@kenrichmond3946]

6 years late... Been working on my alternator all night. Front bearing is very noisy with a little play. Rear bearing has a very minor amount of noise and a tiny bit of play, but probably has some time left. Vehicle is 22 years old on original alternator 135K miles. Now, I'm having a terrible time getting the rear bearing off the shaft. I cut into it and most of the grease was gone and what little was there was dried up solid and dirty. So, I wouldn't say rear bearings never go bad.

[@DavetheRaveDinkum]

Wow Ive been a mechanic for 20 years, Ive seen all sorts of tricks to remove bearing from shafts, but never has an angle grinder been involed lol. Ur freakin awesome to not have caused any damage thats hectic. Nice one mate 👌 I'll stuck with my pullers haha.

[@michaelovitch]

The copper race seats on a plsatic bushing on this one,it's weak as possible,so i didn't even try the puller. It was a sunday afternoon and it had to run ,so i went wold on it lol I'm quite delicate with angle grinders : ) Thanks : )

[@electronicshelpcare]

Thanks for the great video.

[@michaelovitch]

Thank you : )

[@8bert9]

When you don't have an inductive bearing heater cook one up,lol. I am an industrial maintenance technician and we have an inductive bearing heater. It is for putting the inner race of the bearing back on the shaft. You only have about 30 seconds once you remove the bearing from the heater to get it on the shaft in the right place before it cools and locks on the shaft. If it cools on the shaft in the wrong place its do over time. Nice job on that alternator!! Improvising at its finest! Another way to heat a bearing is get cooking/automotive oil and a thermometer and heat the oil with the bearing submerged in the oil.

[@michaelovitch]

Thanks : ) I 'm an industrial maintenance technician too...lol i've worked at an industrial electric motor repair shop for a short period of time ,and they used that to install bearings on the rotors, the heater was set up at 110 °C. Good idea with the engine oil,i didn't think about that : )

[@8bert9]

Hehe, small world! I also worked for a electric motor/generator shop too back in 1994. I rebuilt the APU's, the power generator side, for Delta airlines. I growled many a commutator, lol. My instructor for my industrial maintenance degree showed us the engine oil trick and it has come in handy through the years :)

[@billbegan4080]

I've done qite a few like this and never had a problem,some of the old tricks are the best,you just need some common sense, if you bought every pissy ass tool they make for this and that you would go broke real fast,good technicians know how to do things with less. ,good high speed vid man. 😊

[@michaelovitch]

Thank you very much,i agree : )

[@markw4382]

While a Work bench & more tools are NICE,.... It's VERY NICE, seeing someone show things being done in the Simplest way, with the Simplest basic tools. (the way I had to for many yrs. lol)

[@michaelovitch]

I'm still doing it,even if i have a worbench now lol Sometimes it's easier without the vice lol

[@marakeshg8112]

heat up the case, freeze the shaft... Dude, you're a genius!!!

[@luisehernandez01]

it was very easy to understand the explanation about how rebuilt the alternator bearing without damage other parts. Thanks.

[@RANDOMMekhaniks]

To all of you saying "this isn't the right way".....It worked, didn't it? It doesn't have to be done your way.

[@mikeward2922]

If only the government and media approached their work like this.... Amazing lesson in working to get the job done

[@guitarwok]

This couldn't be a better video. I really appreciate it.

[@michaelovitch]

Thank you : )

[@15061952]

I have seen geat jobs of this kind made in your country !!! While in my country they tend to change the whole alternator without hesitations.

[@michaelovitch]

I'm french,they change the whole alternator (or the car) to in my country lol

[@SomaElectricals]

what is the logic by putting those parts in deep freezer and oven.

[@michaelovitch]

Cold metal shrink hot metal expand So it's easier to insert one in the other.

[@aurinkonz]

That is the reason I gave him a 'like'.

[@beangie]

There were a time when Parts were so scarce in some places that everything had to be fixed not changed, now most ppl will just buy a new one and that's it, but recycling nowadays due to pollution it's the way to go, reuse and renew your stuff , plus it's cheaper, and all you need is some time, and some tools. Reuse, renew, and recycle!.

[@amieltoriano437]

Thanks bro, now i know how many bearings i can change :D cheers!

[@michaelovitch]

Amiel Toriano Thank you : ) Cheers to you too !

[@donwolfjr1]

There's just something about BRAND...NEW...BEARINGS!!!! Nice work!!! : ) Don W.,Ohio, USA!

[@michaelovitch]

They are smooth and shiny : ) Rhone alpes France next to Lyon : )

[@donwolfjr1]

Very true!! Lol...

[@MaikEletrica]

Very good man!

[@michaelovitch]

Thank you : )

[@neypereiraoficial]

kzbin.info/www/bejne/nni0iJmspNOJkLs

[@nikolaromanos456]

Your video is helps will save a lot of money to the car owners by doing itself. thank's a lot Michael.

[@anoc5511]

So I am guessing... say about couple thousand bolts and screws..:) But what an Amazing video... No Bs and showed every thing in clear detail. Good Job Sir.

[@michaelovitch]

Thank you : )

[@benefieldharcourt9931]

how about when you spark and burn the varnish of the windings with that grinder. we have a bearing puller. as for the freezer and heating up the bearings thats a given.

[@spelunkerd]

One of these days I'll have to take mine apart, I think the brushes have seen better days.

[@michaelovitch]

Very important on fuel injection cars.... On my car the brushes are kaput too. It's a bosch unit on my volvo with a separate regulator like here but bolted on the outside of the alternator,not under a shield like here. The old ones are a bit bigger but easier on maintenance and can be easily rebuilt. The copper contact/race is at least 2 times thicker and not inside a plastic pressed cage like here.... I thought i wouldn't be able to remove the inner race of the bearing on this one because of the fear to destroy the plastic cage = / I guess it's easier to buy a new one for garages owners than to rebuild them. Plastic era sucks.....

[@i.msc.official]

Hard work.... Great job buddy !!!!

[@michaelovitch]

Thank you !!

[@dave9902]

Great video! Fixed the bearings in my 2010 Mercedes-Benz Bosch alternator. Thanks for posting!

[@drewreid753]

this is confirmation, they can have my blasted 168 dollars

[@HandsomeOrHandy]

how do you know what bearings you need to buy?

[@michaelovitch]

It's typed on the bearing itself,on its flank. It looks like a number as : 6200 2 rs The first group of number is the bearing identity,wich corrspond to its dimensions. The number alone is the number of seals ,you sometimes have no seal,one ,or two seals. The letters are the type of seal,polymer,steel,or else. You may have specific info then like the letter "C" or something else wich indictates that it's a low friction higher tomerances bearing. You will not have that on an alternator,it's very standard and simple. You will have two bearinsg,certainly from a different size.

[@vraymond108]

Great video. I might have to do this one day at sea so I am glad to see what it takes to accomplish the task. I do have a gear pullers and a rebuild kit but this video showed me that it can be done. Thank you.

[@michaelovitch]

: ) Thanks to you : ) Have a nice work ! It's on a boat ?

[@vraymond108]

Yes, I have a Balmar 24v alternator. I bought the rebuild kit in case I ever do it away from shore. It can become a life and death situation if the alternator bearings suddenly pack up while motoring near the shore because the alternator and water pump are on the same belt. Should be two different belts.

[@michaelovitch]

wow,that's weird. i agree it should be two different belts ,like you say,on a boat,it can be really dangerous... Can't you use a double pulley to separate the two ,with two belts ? What engine is that ?

[@vraymond108]

It is a Perkins 4-236. I could set up a double pulley system but will require some design work.

[@michaelovitch]

If you have this set up,you can just install a smaller belt for the water pump alone ,and the use the current alternator location to install a simple belt tensionner. you can install the alternator on the same actual spot but,slightly moved forward on the engine length to align with the second belt. You need cranckshaft pulley with room for two belts however. www.perkins.com/content/dam/wwwperkins/28711.2.jpeg?$cc-s$ Seen it's a common engine mounted on a lot of equipment,i'm sure you can do that quite "easily".

[@EminHVAC]

awesome video buddy.

[@michaelovitch]

Thank you : ) Your job looks pretty cool. Nice channel.

[@tripjet999]

Before the video was over, I had purchased a rebuilt alternator and had it installed. MUCH less trouble!

[@cblazer]

omg I make these for a living and I lost tract of the things that will cause your repair to fail prematurely. use lube on black bearings, don't beat on the rotor etc etc. Sorry I'm so used to making them it erks me to see certain things.

[@michaelovitch]

You can do that without problems,all is still working normally today : )

[@whocares8158]

cblazer yeah you make the del cos I get bad out the box all day long

[@romusa9204]

it already failed prematurely because it was made like you say it should be made, Lets try something differently and you do something else for living

[@jonniejam-shovel6405]

Thanks Michael, kind regards from South East England.👍

[@michaelovitch]

: ) Hi !

[@crististreulea]

awsome job!

[@michaelovitch]

Thank you : )

[@mememedelyn2140]

Salut cristi am incercat sa caut la tine un asemenea tutorial dar nu am gasit :) ,tu si explicai ce si cum sa facem, am observat ca nu a mai demontat bara ca sa demonteze alternatorul in schimb a demontat pompa servo , banuiesc ca am si eu ceva probleme la alternator dar nu imi dau seama care ar putea fi ori fulia ori rulmentii , sa existe vreo diferenta de sunet intre rulmenti si fulie atunci cand sunt stricati?

[@crististreulea]

cand o sa am probleme pe acolo, o sa demontez si la mine

[@littletoes8501]

Nice Job! I'd say a nice editing job. Quick and efficient without all the talking or hype! Thanks! ;)

[@michaelovitch]

+littletoes Thanks to you : )

[@melniksmotors]

by the time you do all that, basically you just bought yourself a new alternator from autozone with 2 or 3 year warranty labor wise. i dont think its worth nearly cutting off you fingers with a cutting tool.

[@michaelovitch]

+George Melnik I don't have this kind of deal here,it would cost around 150, 200 euros to change it.... It was 6 or 7 euros invested here, to repair it.

[@antoineroy5876]

+michaelovitch i need to change my screaming noise bearing on my alternator toyota echo alternator its the original alternator and the car have 275 000 km on it... i wanted to do what you did but my dad an experiented mecanicien worked over 20 years in toyota mechanic told me to never open a chinese alternator because everything is so compact and prescise that when you gona assemble it back and install it on the car something wont work right...

[@michaelovitch]

+Antoine Roy Alternators are not really complex. You can give a try . This one was from 2009 and was repaired quite easily : )

[@antoineroy5876]

+michaelovitch yes im waiting on it to seize or something because im way too busy at the moment to repair it...

[@michaelovitch]

+Antoine Roy If is seizes the auxiliary belt will fry. be careful on that : )

[@ej1644]

love the video ... shows you can still rebuilt the old alternator...

[@michaelovitch]

Thanks ! Yes they can be rebuilt,even if peoples throw them away !

[@edwinposey]

vary professional work plus i love the way you marked the clock position good work

[@michaelovitch]

+edwin posey Thank you !

[@8bert9]

Smart putting bearing housing in oven and putting the armature in freezer. An good way to get the other bearing easily on the armature shaft is get a pot and put cooking oil in it and put it on a stove burner, drop the bearing in it and heat the oil so the inner bearing race will expand and then remove it and it will slide right on to the shaft.

[@michaelovitch]

Did you try with sealed bearings ?

[@8bert9]

@@michaelovitch Yes, I have used it for all types of bearings. At work I use a bearing heater which is a device that uses induction to heat the bearing. At home I have used either the stove method or use a bucket with oil in it to submerge the bearing and apply heat to the metal bucket with a propane torch. All that matters is that you get the inner race hot enough to expand enough to get it on a shaft. You have to be quick because you don't want it cooling down before you get it to the correct position on the shaft.

[@michaelovitch]

@@8bert9 Ok, thank you. I will try that next time. : )

[@adnanabidi965]

Awesome Video man... Every thing in detail and no BS. And I can't believe how fast you work its like Bionic man. lol

[@michaelovitch]

+Adnan Abidi Thank you : ) I eat my vitamins lol

[@TrustPlumbing]

Thanks for sharing pal, ingenious problem solving. Very impressed!

[@michaelovitch]

Thank you very much ! : )

[@rudyfuentes1610]

good video, only concerns are why not use a bearing puller for the little bearing? and grinding next to the copper wires can create a contact between them and cause problems when u fire it up,possibly

[@sidshaikh4868]

this is not the right way to do it

[@mikedd87]

It worked, didnt it?

[@ggsmith099]

I would be too chicken to cut that bearing off! But the heat cold parts worked great nicely done thanks cheers! 😎💨

[@milovanmaric7649]

ovo je smešno..

[@jbobea]

Excellent! Very useful video! Please, next time use the bearing puller (extractor). That grinder is very dangerous near your fingers and eyes.

[@michaelovitch]

+Javier Bobea Thank you : ) Yes,i will.

[@Bleeper168]

or you can just buy a new alternator

[@michaelovitch]

+Pierce Starcraft Of course. You can do what is the best for your need,ability,budget. It's just an idea for you : )

[@johnszoke586]

Cheap Chinese will cost you 200, German is 500

[@Sydney-Ghumo]

$5 bearings vs. $300-500 for a replacement alternator?! Is daddy paying your car maintenance bills? Its a very simple DIY, and a very cost effective fix. The tools are a one time investment. I would've done the bushings too while I was in there.

[@jjjohniee]

Nice, just did mine, all for angle grinding the inner bearing ring off, have used pullers before where you could only get to the outer ring and ended up having to do this anyway as they left it behind! Also all for changing the rear bearing, why would you risk having to do it all again and mine looked worse than the front! Thank You! Happy 2019

[@michaelovitch]

Thanks ! Happy 2019 for you too : )

[@Shaun60230]

Hehe the Hoven-and-fridge technic again ! Good video, learnt something with it !

[@michaelovitch]

Thank you : ) Yes again, it worked quite well too here : )

[@jaggass]

Peugeot 207's with BMW Prince engine sound like they have worn alternator bearings. They normally sound like that and you can hear from a mile away.

[@michaelovitch]

It would drive me nuts after a while.

[@davedeatherage4902]

Thanks! You helped me with this project, thanks again!

[@michaelovitch]

: ) I'm happy if it worked ok for you.

[@Darek80]

You wrote " no fancy tools required". Sorry but i don't have oven & freezer in my garage :-). Just kidding. I like your videos -greeting from Poland.

[@michaelovitch]

lol Thank you ,greets from France, i'm sure you are going to get the storm we got yesterday in no time : ) It's in Germany right now...

[@julianmcalister3247]

That alternator looks just like the one I have, the only problem is, I wish my back bearing stayed in the house like yours did. What’s your recommendation for getting it off the shaft without using a cutting tool? I have a small bearing puller and pulled the front one off with absolutely no problem at all, but the back one, it won’t fit inside enough to grab it. Everything always goes easy until that one thing. I’m sure that speaks for everyone else.

[@michaelovitch]

You can just tap it with a chisel to push it towards the end of the shaft. Vibrations will make it move,the bearing races are very hard.

[@julianmcalister3247]

I appreciate your response. I was going to write back and tell you I got it right after. What I did and this might help someone else as well. I actually had the bearings mixed up as far as front and back. It was the front I was having trouble with. I put the housing back on, put the 4 screws back in the plate, and push the shaft out of the bearing. That left the bearing in the housing to push out with my fingers. The bearing puller saved me lots of time and trouble for sure.

[@michaelovitch]

Good work : )

[@framerjayvesey7324]

This is a fantastic video! No boring talking. Fast mo thru the boring stuff. Just a non boring vid! But Dude!!. Cutting the old bearing off with a grinder??? Please don't teach the diy'rs to do this! A Bench vise and a good set of side cutters will save the digits from becoming dots. Hope ur pickin up what I'm puttin down. Other than that, great job!

[@michaelovitch]

Thank you : ) I don't see how you can remove the bearing's inner race with a side cutter. I had to grind it here,because impossible to remove the copper race to let room for an extractor. I was too afraid to break the plastic cage around it.

[@ranz9688]

It looks not too hard to do the job. However, the alternator bearings are too expensive. I checked amazon, advance auto parts, and ebay. The bigger one is cost about 25. Nowhere to find the smaller one. How much did you pay for the two bearings and where did you get them from? Thank you!

[@GENERATOR-924]

i am Michael too............Bravo!!! Excellent work!!! Thank you Michaelovitch...... ;-)

[@michaelovitch]

+mixalis vasil Thank you Michael ! Long live to the Michaels ! lol

[@drwombat]

What are you doing for the first few seconds starting at 04:08 ? It appears you're cutting into the bearing to get it off easier but a few seconds in around 04:14 it appears you might be sharpening or polishing the rotors on the unit? Or is that just an optical illusion

[@michaelovitch]

I'm cutting the bearing,but it touched the fan,and damaged it a little.

[@kentonjoegibsonii2211]

Excellent demonstration, thanks for the video.

[@michaelovitch]

: ) Thank you.

[@RudyMundo-hq9to]

Thank you for sharing your skill now im gona go and fix mine😊

[@michaelovitch]

: )

[@philc7192]

Excellent video. I don't think I could remember where all those pieces go when it is time to put it back together. LOL. I had never thought about replacing just the bearings in an alternator....until now. The alternator in my vehicle is "noisy" when it is very cold....below 15F or so. It's a rebuilt alternator so it probably has the original bearings in it. Subbed. Like your video style!

[@michaelovitch]

Thank you : ) You can replace bearings,brushes, the regulator rotor,stator etc... about everything wich is replaced when rebuilt in a factory. Most of the time bearings fail and the brushes wear out. Rarely it's the regulator wich dies. One alternator can easily do the life of a vehicle with minor repairs like here. Peoples change them just to avoid to open it and use some time on the repair. quicker to swap...but more expensive.

[@philc7192]

Agree. I'm learning more about vehicles as I get older. I'm doing as much as I can physically do on my vehicles. I just built strut towers and replaced both front struts myself. Saved about $1000. It's amazing how much car shops charge for simple jobs. Thanks again!

[@michaelovitch]

***** Yep,they use the fact peoples don't know how to do things wich are not so complicated just because they never tried or being obliged to do those. When you have not too much money you do a lot of things yourself. (like me lol ) Thanks to you,i'm happy to see peoples wrench on their cars : )

[@mikeg3529]

michaelovitch Very good video.... I was going to rebuild the old unit on my chevy s10, but I managed to find an already rebuilt alternator on ebay for about 10 bucks more then the rebuild kit, so I just opted to do that instead. 55$ bucks for a rebuilt and tested alternator. even came with a data sheet showing the specs during the testing. Kinda wierd though, when I start the truck the voltage seems to hang out around 12v for about 4-6 seconds before the needle climbs to 14v. Never seen that before, but it doesn't seem to adversely effect anything...stays right at 14 with all the lights and wipers running, so Im satisfied.

[@michaelovitch]

Bone Daddy As i understood it's to allow an easier start up. No load on the engine the few first seconds to wake up gently.

[@Bahai111]

Fantastic tutorial! I've never seen a video better than this! I learned so much. What brand of bearings did you use? Thanks!

[@michaelovitch]

+Errol Dillon Thank you =) Thay were NSK if i remember correctly. big brands like NSK or SKF etc... are trouble free.

[@Bahai111]

Thanks so very much!

[@SuperAviatar]

Domestic strife can be reduced by popping rotor in freezer bag before inserting in freezer..... and bearing pullers aren't all that expensive these days! If you have a welder available, a couple of spare small bolts can be welded into the inner race groove, the heat expands the race and it will pull off easily... especially if there is a plate available with holes to match, and nuts are used as pullers!!!

[@michaelovitch]

SuperAviatar I use the hot/cold trick too : ) kzbin.info/www/bejne/jInbYaKOrqqkaM0 The puller here would be really dangerous for the copper race. Its cage is made of plastic,so if it slips the whole stuf is fubar and you can go buy an other one. I've played the safety first here,the car HAD to run the next morning to go to work. Yes for the homemade puller,it's a good idea,but it takes a bit of time to build,and i'm lazy,and i have a grinder lol

[@cristianbut1646]

Nice , useful video! Remark : Not a very good practice to hit the bearing directly with a metal hammer. Maybe a rubber one !

[@michaelovitch]

+Cristian But Thank you : ) Yes,that's why i use a socket to tap the inner race only : )

[@tintlwin3192]

Thanks a lot. I had changed both bearings of iveco tipo

[@michaelovitch]

Yeah ! : )

[@arvindkumar-tj6ls]

सर यह आपने अल्टरनेटर के कवर और बेरिंग को फ्रीजर में रखा है या माइक्रो ओवन के अंदर

[@michaelovitch]

The bearing is the freezer, the alternator plate in the oven. Install them and let them be at ambient temperature. Then you install the rotor wich was in the freezer and slide it in the bearing. : )

[@rimka11]

Do you really need to change both bearings? Only the first one is on significant load (the belt tension). The back bearing just rides along.

[@michaelovitch]

When the first one is worn out,the other is taking load too,their alignement not being good anymore. The alternator shaft is acting as a lever on the second bearing then. Generally one is more worn out than the other,yes.

[@henrywiltschek7167]

An excellent demonstration

[@zx8401ztv]

Smashing job, repaired very cheap :-)), no burning of houses down ha ha :-> The carbon brushes on the regulator didnt look too bad eather. Using expansion and contraction was a clever touch, we often forget about the propertys of metal. Why dont you speak in your own language and add the odd english subtitle, much easyer than making two versions :-)

[@michaelovitch]

Yes not too bad for the brushes. The car was 50 000 kms only when the bearings went out. Bad bad bad...it's very low i think. I don't really like to speak lol This idea with my sound and subtitles is the best and it would be more interesting i guess. But i don't really like to speak,i wouldn't hear myself when editing lol The software would crash for sure : )

[@yakupcanaydin6311]

Dog is very nice. I love it bro. Thank you for your video. Good informations. :)))

[@michaelovitch]

: ) Thank you !

[@Rm4n]

This video is giving me confidence to DIY it. Where do you buy the bearings? Great video BTW.

[@michaelovitch]

Thank you : ) You can buy them at any hydraulic shop,general mechanic shop or all kinds of shop that use bearings. they are really common.

[@Rm4n]

Awesome! Thanks!

[@loueretabrown9956]

I have a question, "When you see white Sparks coming out from your alternator, what does that mean??! And I'm hearing a screeching noise from that area too. I have a new belt already and one new pulley for the belt

[@michaelovitch]

Worn out brushes can cause sparks,because the contact is not good enough,so electricity jump from the rotor to the end of the brushes. worn bearings could cause sparks ,but you would hear an horrible sound since quite some time,they wear out quite slowly. Check if there is some play on the alternator shaft,and if it's rotatting easily by hand without the belt on it.

[@the_punisher01]

Good job mate ;) I have a broken alternator with broken bearings and a destroyed belt pulley. Now i'm gonna refurbish it. Nice job with the cool-warm trick and also that one with the hammer drill ;) Nice sleepy dog too :) Thanks for the tips

[@brianfong9088]

Jesus! That's a lot of work!

[@michaelovitch]

Yes,relatively to the money spent lol

[@rogeronslow1498]

I like your bearing puller.

[@2ooii3iioorahulyadav26]

Wagnor 2014 model h alternator me se noise ate h jyada repairing ke. Charge Kitna aa jyga

[@kongalagegamini1132]

Descriptive demonstration! Thanks!

[@michaelovitch]

: )

[@boomshakalaka2275]

that where youre cutting the outer race of the bearing with the angle grinder was like watching a horror movie, was waiting for the blood and a chopped finger or two

[@michaelovitch]

Me too when i did that. No other solution to do that. I have a vice now,and a workbench,so it's way safer to do this kind of stuff.

[@ciapus44]

Hello. I need to replace the bearings in the alternator on the Toyota Rav4 2009, 3.5l, 6 cyl However, in Canada I can not buy bearings as spare parts for the alternator. If you could give me information on where to get bearing sizes and where to buy them. Regards and I am asking for helpful information

[@michaelovitch]

On the bearing itself are several numbers and letters. It's the bearing reference describing its size,type of seal ,type of use etc.. it looks like" 6002 zz" or "6200 zz" you can find bearings for few bucks a piece in a place selling bearings or industrial furnitures. What is the part number of your alternator ?

[@andyrachman5272]

Nice trick for cold refrigerator & Microwafe.....

[@michaelovitch]

Thank you : ) Be careful,it's an oven,not a microwave. If you put some metal in a microwave it will cause damages and big problems !

[@mememedelyn2140]

Michael is that a Dacia Logan car? From what I see you dismount the servo pump to take out the alternator :) nice job

[@bmw-e30]

Great tutorial--you're lucky your wife hasn't barred you from the kitchen.

[@michaelovitch]

Thank you ! hahaha !

[@elijahcollier8444]

michaelovitch

[@floridamanfishing1390]

Great video really good information i have a question were do i get a rebuilt kit from because i am have this issue right now on a 2017 jeep Renegade 2.4l and i would like to do this but not sure were to get the parts for my alternator

[@michaelovitch]

Thanks, If you want to replace bearings,just remove them,and look the numbers written on those. It's a serie of numbers wich are generally 4 or 5 in a row, followed by two or three letters. Numbers are the reference of the bearing,describing its dimensions,and letters are details about the type of seals used to keep the grease in. just buy the same bearing you have in the alternator. It's common bearings most of the time,and should be quite easy to get in a hydraulic shop or general mechanic shop,or even online.

[@floridamanfishing1390]

@michaelovitch thanks for the reply I really appreciate Watching your video was inspiring for me because I am in the Mechanic field still learning But as you said, in one of your comments to someone else, just do it. And that's what I'm going to do. Probably take a crack at it this weekend Thanks again

[@michaelovitch]

@@floridamanfishing1390 At worst,you mess up and learn from it,except that,you will repair the alternator. I broke few stuff working on it,by mistake or inexperience,you always learn from that : )

[@BASILE703]

Super tutorial man... to me when I turn my squeaky hear a creak in the morning and then after 5 minutes is no longer heard, think you have to change them or belt from the alternator bearings or bearings? the car has 57000 km (Skoda Fabia 1.9TDI) Thank you very much

[@Tay-Yen]

no

[@michaelovitch]

+Andrei Vasile Thanks : ) I think the belt is just a bit loose. bearings do not creak 5 minutes,they make a constant howling. try to spray some water on the belt to see if it make the noise to stop. You will see if it's the belt or anything else : )

[@elomeli211]

What did this alternator come off? Looks exactly like my Bosch on my mercedes. And where did you find the bearing specs? My alternator doesn't whine, but it feels scratchy when you spin it with or without the regulator attached. W203 Chassis.

[@michaelovitch]

From a renault 21. The bearings specs are on the bearing themselves as a number/letter combination. You can also find them websites selling parts for your car,from mercedes itself or simply a parts shop.

[@adv.skswargiary8057]

My eons alternator bearing should be changed, its making sik sik nousy sound. How much it will cost ?

[@perfectsquare2167]

Good video Machiavelli! 😁

[@michaelovitch]

Thanks, Why Machiavelli ?

[@perfectsquare2167]

@@michaelovitch .- Just to make your day better!

[@michaelovitch]

@@perfectsquare2167 : ) Thanks !

[@jfgauthier1]

Also, how did you determine the size you needed etc? Did you do this before taking off the alternator, or did you take it off, disassemble it, measure and then order?

[@michaelovitch]

+Jean-Francois Gauthier You can : -disassemble it and look at the reference on the bearing itself.(it's a standard number like 6200 zz or zs with the brand just before (nsk skf nsr etc....) -ask in an auto parts store the references of them. I disassemble it, look at the references on the bearings ,and buy them ,or order them. they are often the same sizes in a lot of alternators.

[@doradean3097]

What kind of oil is used at 7:00 mark, between the shaft and the bearing? Can a non detergent SAE 30 lubricating oil be used?

[@michaelovitch]

Yes. Whatever usual lubricant you want is good. engine oil,trnasmission oil etc.

[@OMARA-ce8wq]

شكرا على المجهود المعتبر

[@michaelovitch]

Thanks : )

[@johnbeer5242]

that's what they use to do back in the days in most shops electrical shops but then they were like buying new 1 was less drama

[@johnbeer5242]

or they just got lazy I don't know but yeah I worked for a shop before n in the back they had all parts for starters alternators they use to build there but they stop some time in the Early 90s

[@mattdrifts]

where do u buy the bearings? and do you have to use a grinder to get them off

[@michaelovitch]

You can buy them from a hydraulic shop,industrial parts shop or even an auto store. it's quite common bearings. The grinder is not an obligation ,you can use a pulley puller or this kind of tol to extract the bearing. i have used a grinder because i didn't want to damage the plastic cage in wich the copper race is.