Alternator repair : Noisy Bearings replacement
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- čas přidán 27. 07. 2011
- The Renault 21 GTS (90 hp baby ! ) is grinding some coffee under the hood.
After some deep investigation we found that the alternator had bad bearings.
It's a remanufactured part.....
So, 14 euros later we have 2 ball bearings 6000 and 6203 from nsk and the rest is on video (for the most..). = )
Music : Mister Oizo " stunt" - Auta a dopravní prostředky
Good video. I like the way you speeded everything up so we can see the entire repair without waiting 15 minutes. Found the action so interesting that I was able to tune out the music, lol. Thanks for the info!
Thank you : )
I have a more detailled video without music on the same job if you want !
Alternator repair : Noisy Bearings replacement
Yeah it's a really good method !
i was in a hurry for this one ,the car just arrived and had to run just after.
Thanks for that method !
I 'm happy to read it helped you : )
Thanks to you !
The ball bearings in alternators are really common parts used in many many applications of the industrial world.
I think the better is to look in the alternator for the references and buy them at a local store like a tractor or mechanical /hydraulic parts seller.
You can take the serial number/model /type on the exterior of the alternator and look in the datasheets of the manufacturer or a specialist but it's quicker lo look in the alternator i think.
Thanks for posting this video now 100% sure whats wrong with my vehicle
@ruiferreira89
Useful !
Well done !
How much time it took to do that ?
Could not stop dancing. Too exhausted to change bearing now. Could you repost with slower music?
if the alternator is not charging your system (check the battery in itself first) you can look at your electrical connections first (ground and positive) they must be tight ,not corroded,not in bad shape or half stripped.
Then you can check the brushes visually by removing them if necessary.
Bearings failing only lead to noise and seizure of the alternator on its axis.
@michaelovitch
Do you take in consideration that engines run at aroud under 3500 most of their life and the fact that bearings are not always equipped with side shields ?
their country of origin ? (sand, dust,hot weather or cold temps etc... ?)
That working room must feel dreamy
Right !
i have changed a wheel bearing quite recently with a freezer and an oven : )
@MrSpan0701
It's a remanufactured one.
I've been obliged to change the bearings while it ran 20 000 km maximum
Remanufactured parts are checked and the only parts changed or overhauled are the one that fail the remanufacturer specs.
In this case i think the bearings have never been changed.
But the tiny one 6000 model was really dead.the bigger was quite ok.
My parents have a car on wich the alternator ran nearly 200 000 km it's a bosch brand.
@MrSpan0701
135 000 km but it's not this one wich is on the car since the beginning.
the stock one have been changed to this one wich have been remanufactured.
شكراً لك من أعماق قلبي على عطائك الدّائم، كلمات الثّناء لا توفيك حقك، شكراً لك على عطائك. للنّجاح أناس يقدّرون معناه، وللإبداع أناس يحصدونه، لذا نقدّر جهودك المضنية، فأنتَ أهل للشّكر والتّقدير، فوجب علينا تقديرك، فلك منّا كلّ الثّناء والتّقدير.
Thanks : )
@masster64
Yes.
a lawnmower of 90 hp : )
no more leaks on your's ?
I would check too if the accessory belt is still here and if it's enough tighten (we never know...)
One year and a half later no problem.
It's working normally.
yes oil first would help.
it went out very easily,so i thought it would be as easy to go in.
Here it's an alternator yes.
I've changed a pressed wheel bearing and didn't need to press it thanks to a freezer and an oven.
You can see in the vid on my channel.
i've used heat and cold to expand and retract the parts fitted together.
I have no press.
They were not from those brand but from Poland.
it was a remanufactured alternator so i can't tell you how many kilometers they had.
I personnaly would go for skf but nsk is good too.
just install bearings with shields and they will last a long time.
: )
The proof is that all the alternators are remanufactured..and in my case the bearings were not changed during this process so they failed.
Cheap repair.
The alternator was working perfectly providing current and still does.
Only the bearings were damaged,so it was noisy when it was turning.
An alternator is never dead.
A whole replacement is quite dumb and a commercial argument.
There is a stator and rotor wich never wear out.
Wear items are the set of brushes and bearings.
The diodes can fail but it's rare.
An alternator can do easily the life of a car.
I can't believe the nut holding the drive pulley came undone so easily...
Great vid! Not wasting my whole life to watch. Perfect. Thank you.
Thanks to you : )
If you want, i have an other video about the same job,it's more complete.
Alternator repair : Noisy Bearings replacement
@ruiferreira89
Yes it's quite easy on this car.
For you bearings you could remove the alternator and split it to see the bearings references.
then do it again to change them.
it's what i did.
it's easy and fast.
Cool video, thanks!
: )
Thanks
In this case i would check basic stuff first : connection between alternator and battery. and body (ground)
Then if all is well connected i would check brushes.
Then the regulator.
It's just diodes that can be changed on old models or replaced with regulator and brushes in early models on a single part)
Then the welds of the stator on the inside plate (i don't know how it's called in your country)
Most of the time a dead alternator giving 0 Volts have worn out brushes or a fried regulator.
@ruiferreira89
I think you should show it on a video if you want.
that's an interesting and clever way to use those tools.
@MrSpan0701
Yes i will measure it and tell you.
You need to know the diameter of the cranck pulley too or you will not be able to know the speed rotation of the alternator.
the accessories pulley on the cranck are bigger than the alternator's one.
I can tell you yet that the alternators can deliver their max output at around 2000 2500 engine rpm .
They rotate at around 12 000 rpm when you're full throttle on a regular car.
No.
The health of your system me be checked if the charge is not kept
voltage must be checked first :
-engine off : you should have 12.6 volts or a bit less(not under12Volts) 24 hours after a complete charge.
-engine on with half throttle : you should have more than 12.6 (from 12.6 to 13.5 volts)
Then if all that is ok and the battery can't keep charge that mean something is sucking juice all the time.
bearings allow only the rotation movement.
brushes are just contacts inside the alternator
Where would I be able to find the proper bearings for my mazda protege alternator ? Im not sure of the sizing. I guess I would need to find out what model alternator I have... or maybe bearings come in a standard size?
Cool Video! The good old R21. It was and still is a lovely car. Also the R25 was a magnificant car.
+Kaktus Jack
I agree.
I prefer the 21's body.
more lighter shape,low and fast : )
She got a 160 km/H run last week : )
+michaelovitch Nice! I love the little older Renaults, 80s and 90s. Used to have a Renault 5. The toughest day of my life was when i sold it. Run like hell. The only drawback was it had points not a transistorized ignition.
+Kaktus Jack
Those cars don't want to die.
It's a good thng.
I see several of them everyday here.
I knew a guy wich had a gtx if i remember,it was a bomb on wheels with its 1.7 engine.
It was a sleeper from factory : )
+michaelovitch That's a hell of a machine. I guess it's the one with dual webber carburetour. If so, they are awesome. I had a crappy SOLEX BIS 32, wanted to swap it for a webber or a Clio mk1 engine, but then i sold the car:-(. But i'm gonna buy me again a R5 one day. Just love the french cars, and swedish too.
+Kaktus Jack
Yes it's like on this one,it's the 28/34z13 carb
single carb,two barrels...
this thing fly with that much weight around the engine : )
@michaelovitch Yes, I did find the crank diameter, with the ratio of the two and ave RPMs of the engine I can get a total RPM, or cycles, put on the bearing and then be able to calculate the fatigue life and safety factor to failure. Your bearing failed, I am curious if you may know how many miles you went before it failed?
@vmtz2001
You're right.
But this one is not instructional : not enough detailed.
It's just to give a global idea of the work involved.
You just gave me an idea : )
@MrSpan0701
1990 renault 21 gts !
Nice job Michael! Much better than buying a new alternator...where did you find the bearing specs before dismantling it?
Thank you : )
You have to see inside what are the specs,or you can find it,in a catalogue from the manufacturer.
I look inside the alternator it's way faster than going to ask everywhere.
few bolts,half an hour of work, and you are sure to buy the correct ones,it's typed on them 6062 or 6000 for ex, it's a standard reference.
Great sound like Maserati.
ha ha ha !!! : )
I like this music !
it's can make peoples react quite radically, my brother thinks like you : )
was the old damaged bearings NSK or SKF and how many kilometers(or miles) runned?, I'm trying to figure it out which one is better
@michaelovitch If it was remanufactured, keeping the bearings,then how many km on the car total?
You're right but i have no press and i was in a hurry.
it's my next wish for Santa !
So if an alternator is no longer keeping the battery charge up, is it most likely a case of simply having to replace the bearings and brushes?
Was the alternator still providing current to the battery with the damaged bearings, or was the alternator basically dead when you replaced the bearings?
Very nice
Thanks !
Very good video :-) :-)
Thanks : )
@michaelovitch Thanks!
brilliant
lol
Not so much,but it worked so it's good for me.
I did !
with a propane torch.
It was not enough i think.
I have a question if you would tell me, Im working on project for engineering analyzing a bearing so if you could tell me what the diameter of the alternator pulley is I could find how many RPMs the alternator spins to the engines RPMs.
you mean good or ugly ?
it's Mister Oizo " stunt"
I also hear the same grinding sound under the hood on my Nissan Xtrail. But it only produces that sound when above 60kph. You think that is still the culprit?
I doubt.
You can try to reproduce the sound by getting the engine at the same rpm while in neutral.
If the sound can't be heard,i would say it's a wheel bearing or an other rotating part.
bearings noises are related to load on them and speed rotation.
if you only her the noise above a certain speed and not rpm or gear engaged i would say a wheel bearing.
try to switch in neutral while rolling above 60 kph the engine will idle and you will can detrminate if it's engine rpm related or elsewhere.
hi thanks for vid. mine was making the same noise i just got bearing replaced on my alternator and its still happening any ideas?
Are you sure the alternator was the noisy part ?
Are you sure the bearings were really changed ?
Maybe two components were noisy ?
Did you change the two bearings ?
2006 325i Alternator problems
Hello,
I have been having issues with my alternator. I heard all the "Why would you get a BMW?, Why do You still Have it? Why are you buying parts outside of BMW? I purchased a Remanufactured Valeo alternator on May 27Th, 2014 and a new battery the next day. Just a month ago I was driving in the hills of Hollywood coming home from work and my alternator light came on and I was still able to drive it home but with hard steering. I didn't bother checking my engine when I got home because I been through this before. The next morning I pop the hood and the tensioner pulley was unattached and belt was undone. . The bolt had completely snapped and was stuck inside. I had to call a mechanic to look it at it and he had managed to take it out there on the spot. The next day he ended up fixing the pulley and it was fine. I started noticing a spark like sound and a faint pumping noise coming from the alternator. I had managed to drive about a week and a half before I started to notice I was loosing power in the hills once again. The alternator battery indicator came off and on until I was about 30 seconds away from home when the ABS and whoe dash lights came on. The car died and I needed my brother to come help me push/park my car. I called the guy who fixed the pulley and he said it's probably a bad alternator and why would I buy a alternator from Pepboys? I said of course to save money and he said he would change it parts and labor 700$. I ended up going to Pepboys to check my charging systems and the first reading read bad battery and that my alternator was "fine" I came back the following week and checked it again, and the manager got involved and advised the mechanic to run the test again for a total of 4 printouts stating everything is running good. I called my mechanic and he checked my steering fluid which was completely empty. So I bought the dang fluid and After I got home I drove the car and it was still tight to steer. I then go back to Pepboys to get my alternator swapped out or tested and I had to drive to another location because they didn't have one in stock anywhere near me. when I finally obtained the new remainufactured alternator my mechanic installed it and it starting smelling like plastic and making a loud fan noise. My mechanic ended up telling me to get a new belt I then went back to Pepboys and come back installed the new belt and the Noise was still there. We ended up putting WD40 on the pulley of the alternator and it stopped making the noises. After the WD40 wears off the noise comes back. I had asked Pepboys to either refund or store credit, since it I have gone through 2 I'm scared to get a 3rd one. If any one of you guys can help with this issue I would greatly appreciate it.
Squeeky belt = loose belt or bad alignment on the pulleys.
Check the belt tensionner,the size of the belt (if it's the good part)
A too long belt could cause your tensionner to be unable to keep it under tension enough.
a loud alternator is not normal.
The steering pump issue is an other problem i think
You may have a leak somewhere,it's not normal to add fluid in this system.
first off Rita you need to pay more attention to your fluids. check them every time you fill up. second, don't always take a mechanic's opinion. although they know what they're doing, they also know how to screw people over for jobs that are simple such as replacing an alternator. lastly, it sounds like you have/had a bad alternator pulley bearing. if you don't k or what that is look it up on Google. spraying wd40 on the pulley won't fix the problem because the bearing inside is ruined due to lack of grease. bearings are a cheap fix, although somewhat tough to do work on and time consuming. if you have the time it's not bad, as shown in the video.
I so need to do this..I have a Mk4 Astra..will the principal be the same?
Yes.
Alternators are all very similar.
You may will have a freewheel in the pulley but otherwise no major difference.
Next time you put in bearings, Put them in the freezer for a while, Over night is great. And if you can, Put a little heat on the part they are going into. They will pop right in (normally) lol
what year model Renault 21 is it?
Let's assume that battery begins with full charge at 12.6v. After 24 hours, battery is at 12.5v, so battery is capable of maintaining charge. There are no parasitic drains on the battery. Once car is started, battery charge begins steadily dropping from 12.5, with no current going from alternator to battery according to multimeter. Battery charge continues dropping until car dies. What parts need to be replaced in order to get the alternator working again?
👍
Hi, I have a 4W Nissan Tiida Sedan, makes the same noise, will it be the same process?
www.partsbase.org/media/images/nissan/d8/d844a5fa85e7e0f5ee6823d2ad5e2eaa.png
Alternators are all very similar.
You should see the same components inside.
Yes it will be the same method.
ok thank u
Size how much
@borisnikolovski2
Sorry but i don't understand.
i've tried to translate what you wrote but it's not well understandable.
Can you write in English or an other language please ?
Shit ! Coffee sob !
Is this legit. I'm having symptoms of a loud noise coming from my alternator , will I need extra tools to open alternator ?
You ask me if it's legit ?
What does that mean ?
You need standard tools to work on alternators,like here unless you have a super fancy alternator.
I can't see how to complete remove rear bearing
What do you mean ?
@Violative911
yep !
you're contaminated now ! : )
I saw the Renault sticker right away and thought this was an F1 car. ; ]
+theoriginalbillholt
I've heard they want to go back at it : )
they bought lotus...
Get on their pit crew. You'll have access to parts and tools forever. ; ]
How in heavens name are you suppose to follow that at the speed????..........bloody hell!!!
Freeze the bearing and heat the case and it drops in perfect
Great music! Sounds like kraftwerk!
: )
Mister Oizo !
Döbbenet, a szakma szégyene....
Capacity of Dynamo motor
Thanks for the video... but I can still hear the same sound
Sorry, I mean chirping sound. I can see your belt tension still loose
axenz axtiz
0:18 and 3:43
Big difference...
The engine makes its own noise that's normal.
The alternator is silent.
The belt tension is good,no squeaking or slipping.
The typical dead ball bearing sound is gone.
: )
michaelovitch Thanks :)
nothings change...noise is still there and looks even more noisy than before
Lol lol lol
I have an other alternator to repair quite soon.
The video should be more academic and useful.
Sounds like my supercharger
ok , thank you . i want to do it nex month :D ..........
A noisy alternator ?
yes, ford focus tddi 90cv 66kw . , but i was thinking to buy a new alternator , and repair the original for the future ;)
If the brushes are still ok and didn't dig too much in the copper ring i suggest you to just change the bearings and keep this alternator on the car.
Buying a new one is not worth the money unless the car is still recent.
Alternators last a very long time....you maybe will not need an other one soon.
Unless you want to do it just to do it yourself.
It's just an advice.
How many kilometers /miles do you have on it ?
Great video, but I've got to agree...that Euro synthesizer "music" is awful.
How u pulled out router bearing...That's the main part of repairing or fixing alternator..Plz..Share if u have the easiest way.
The small one was cut off,because i had no bearing puller.
The big one wat punched out gently with a socket and a hammer.
The best is a bearing puller,it's quite cheap to buy,and safe to use.
@@michaelovitch thanks.🙏
@@spyad9 : )
Rotor bilya sökme aparatinin resmini videosunu çeker misin
I disassemble the alternator,then i look at the references on the bearings to buy the new ones.
I buy the new bearings,i disassemble again and i replace them.
Alternatörü söküyorum, sonra yenilerini almak için rulmanlardaki referanslara bakıyorum.
Yeni rulmanları alıyorum, tekrar demonte ediyorum ve onları değiştiriyorum.
www.google.fr/search?q=bearings+numbers&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiGjZb51vXWAhXlKsAKHUuAD2IQ_AUICigB&biw=1920&bih=987#imgrc=xgTRbo77yBBQgM:
I miss engines being this simple that alternator is so easy to remove
No AC help a lot to keep room around.
I've worked on recent cars,and all are not horrible,we mostly have 4 cylinders here also,it's simpler.
@@michaelovitch just done the alternator on my mk4 golf 1.8t and although simple enough there's just no room
@@lukecowell7516 You removed the intake hose ?
@@michaelovitch no just the throttle body
@@michaelovitch can push pipe out the way tensioner was a pain in the arse too
I thought that sound was normal for a Renault.
lol lol ☺
They are not so bad.
About every brand has problems i guess : )
Maybe replace the brushes while it’s apart 🤔
If worn out,yes.
This one is still working today : )
nsk is japan quality, and you should have pressed them in with some press.
Aynı problem benim araçta da var.
You fixed it ?
@@michaelovitch şarz dınoması = turkey
@@erdogantoygar
lol
I've done it all, repair a alternator bearing, what about the voltage regulator , just doing this don't help you in the long run, go and buy another alternator, I've been doing this for years and it don't work out in the end because working parts wear out and you have to take this off again to carry out the problems again
so much work. i would just send it to workshop
Not the same price lol
Lol. Sounds like a nitro rc car.
lol,true : )
Z33 prnstar 8
How dare you misuse my coffee grinder
: )
heat up the cover, and bearing will fall in with no effort
or freeze the bearing
Sounds worse to me!
داينمو سيارة رينو 12v 50Amp
: )
Seriously
You don't like ? : )
may as well get a new alternator. not a DiY for moderate self mechanics
While you're right, for us po' folks, a $5 bearing and a bit of work is a better fix than a $200 alternator.
@@AKiDNAMEDLAX especially if your alternator is working fine
Kush sameg nehi aa rha tora dere kro yar
I don't understand,i can't translate corretly.
oke
Hey hey hey what the fuck of this so speed way
Ma lik pojma nema o remontu!Pola sata ne moze da ubaci prednji lezaj i plus ga nije zatvorio kako treba a za zadnji da ne pricamo nista .Morao da skrati snimanje koliko mu je vremena trebalo za remont
haha..dont be cheated
That music is terrible!
You should explain each step of the process . Don't like this type of video .
Please remove the music please