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Can’t thank you enough. I almost bought a new alternator because it was making that popping noise. I took the belt off and sure enough it was seized. HUGE SAVINGS! Thanks again.

Very well put together tutorial delivered in a calm way with no music - you see it can be done

Thankyou, I have a hyundai santa fe and have put up with this for months, I found your video by accident and it was the best accident ever, thankyou for your help and knowledge 🙂🙂

So refreshing to see a video where things don't always go to plan and smoothly. Great video.

It's like a British retro tutorial, jolly good.

This is definitely the most informative and well explained DIY car maintenance video I’ve ever watched. Thank you.

Wow..What a breath of fresh air! An intelligent, coherent and well produced how to video..Thank you..Liked & Subscribed...

I could listen to this guy talk forever. Reminds me of Jarvis.

Thanks for being honest. Not always an easy job and gives an example that asking for help might be necessary.

Thanks. Your video shows what a DIY person face when trying to do these type of work at home. With another person help and strength I managed to changed the OAP from my Lancer.

went to help my mate who had his pulley bearing come apart on him we tried with the tools for 2 hrs to get it off in situ it would not budge so hes now got to remove the alternator to do it on the bench a nightmare for him on his car the joys of modern motoring so many special tools and extra hassle... nice video thanks for taking the time

I find it inspiring that Damien Lewis still works on his own car even with all his money!! Never too successful to get your hands dirty!

You: "There is no real way that it can come undone on the car" My car: "I found a real way that it can come undone while my owner drives me. Extra: the half of the tensioner roller vanished, the belt of course is now open." Haha, so probably the freewheel function has gone and the pulley become a simple nut. Volvo V70 diesel 2002 @ 380000 miles. Thanks for your video, now I understand better the insights and now I know what waits for me tomorrow. An interesting addition: that morning I heard some "grasshopper" from the engine, I localized that it is the generator pulley, which traveled towards the generator first and touched it a little bit and started to make small chips, like on a lathe. I had no clue what was happening, so I went to the job, but I put 2 extra batteries into the baggage room and a start cable for every case (have some experience) . After 1 hour happened what I didn't want to happen, I prayed I can drive one hour more with the extra battery without a generator. (the battery in the car of course is near the end of life). I bought a better battery charger, so I could drive home the next day with 2 fully charged (1.5) batteries (approx 150Ah total), 2.5-3 hours, no headlights, and a few stops/engine starts.

Excellent video and explanation. Mine just went out on our 2008 kia optima and I'd never heard about one of these or seen what it was. Not a cheap fix, mine was $1000 t repair. Now I understand it better.

I changed the pulley on my -08 Toyota Auris yesterday. I bought a 14 pieces pulley tool set from my local partstore, but non of the bits fitted. It had like a 17mm insex with a 12 or 13mm boltend on middleaxle. I just drilled down the bolthead so the 17mm insexbit fitted and simply used my Milwuakee M14 fuel to loosen it. Worked great!

That was something I didn't know about till watched this video. So, I did learn something new after all. Brilliant!

Excellent video! I love that you added the INA side-by-side demonstration video of the solid pulley vs. OAP. This was a great example of what to do and what not to do, teaching both the right and wrong way to do it. Very informative video and great production quality as well.

Thank you for a clear graphical explanation on how the pulley works and the purpose of the pulley clutch unit which is on my Kia Sorento 2.2 turbo diesel alternator.

Nice video. Using an impact wrench to get it loose a really good suggestion.

Really good video. Appreciate the detailed commentary and high quality, steady camera work.

Cheers 👍 informative, relaxed and distinct lack of drama. 🍿🍿🍿🍿🍿

Many thanks an excellent video on a little known problem! Great presentation and explanations.

Always love your mondeo vids, thank you.

Yep. My tensioner was rattling like crazy and my belt warped and twisted when idling. I took the belt off and noticed a crack on the belt. I checked all the pullies including the OAP by sticking a screwdriver between the fan blades in the alternator and trying to turn the pully both ways. It locked both ways. It's gone. $98AUD for a new OAP that I install myself. I learnt how to do it from youtube hahaha. I can fix most things on my cars because of youtube.

Outstanding video, sir! Greetings from California!!!!

I managed 150k miles on my OAP...2004 54 plate Passat 1.9PD AWX. Was worse under idle, sounded pretty bad. Fitted genuine OAP and aux and A/C belts too. Happy days.

Just went through all this before discovering your helpful video...typical of my luck! Hopefully others will find it useful though, much easier than working it all out from the ground up :-)

High quality tutorial video. I'm about to upgrade my minivan's alternator and decided to add 2 new alternators.

This is exactly what happened in my car. Firstly it was the tensioner went bad. Replaced it with together with the belt and then surprisingly new tensioner vibrates. After that I replaced my water pump pulley because it sounds squeaking. In the process I also found the timing belt is due replacing too. After all that, tensioner still vibrates and I'm just stumped. The tricky thing about the OAP is that they don't really show any sign or symptoms of going bad. It only manifests its malfunction in other parts.

Very good video. Clear and Precise

Very well spoken, and an excellent explanation! Many thanks ;-)

thanks for the tips, it was very helpful and the video is very clear

An excellent, well produced informative video. Thanks

what an amazing video! highly informative thank you

I changed mine recently. I had not seen your video, and spent many cups of tea scratching my head looking at the cartoon installation instructions that came with the new one, clearly showing some kind of mystery device going into the alternator shaft to stop it turning. (Exactly like you did). So I matched the OAP part number to a tool for the spline just fine, got that delivered. However was still baffled as my alternator had no hex, no torx feature, nothing on the shaft. I was baffled as to what I was missing. Put the tool in and it just turned the shaft, like you would expect. I’m the end I did “option 3” too, and sheepishly walked the alternator to a local garage, cash in one hand, bag of groceries and alternator in the other. They very kindly just buzzed it out with an air-tool there and then, for a packet of me garibaldis. Seems that air tools don’t necessarily need the alternator shaft held at all. (Uses the inertia of the rotor). Next problem was torquing the new one to the right setting tho. So the guy, to my horror, then jammed the alternator with a metal rod, right into the windings of the rotor, then put 80Nm onto the shaft. I am surprised the winding insulation has not been compromised. But 6 months later it’s still working fine… That said I would strongly recommend using the right holding tool, if there is any feature/option to take one. Good vid buddy.

Great video. It was so helpful. Thanks for sharing !

Well done and thanks for the education

Its a faff but with the Bosch alternator on my Bora TDI, I removed it then took the alternator rear off, then used a oil filter chain wrench to grip the rotor so I could loosen the pulley with the VW 33 point spline tool.

Very detailed information. Thank you.

Thanks very much

Good tips thanks Damien Lewis.

thank you Sir!

Good morning and very easy to use the tools

Good of you to actually show what #@#& job these Pulleys can be to remove without professional tools. Most videos show them popping off easily. I've nearly always had to remove the alternator to replace the oap.

there is a third option to torque the screw , flip the 1\2 socket end the other way so you can use it for left hand thread (counter-clockwise) ... they usually have the same size , you just need to open the mechanism and flip it the other way

Thanks mate great video

Top job👍 Thank you

this is amazing video. thank you.

Perfect - Thank You.

Nicely done 👍💐

The pulley is actually self tightening, what with the reverse thread. Like a viscous fan coupling.

Excellen video thanks...👍👍👍

good job

I was about to do mine but lost my 8mm hex. Off to the tool shop to get another one

Good video thanks..

Thanks for the video, did this cure the noise? Thanks

My advice is to use an impact wrench to get the pulley off of the alternator. The pulley is bad anyway so you don't have to worry about ruining it. Use the proper tools to get the pulley back on the alternator and torque it down to the proper torque. Using an impact wrench on the new pulley could damage it. Trying to use the 31 tooth pulley with the center allen wrench tool to get the pulley off could break the allen wrench.

Yes, that's it, that's the noise.

I don't know something hilarious about this video - shouldn't you be sipping tea in your court gardens? Fallen on hard times I guess.. Just Kidding! Lol 😆

For removing that kind of pulley, I used that special tool with air gum. Don't need to use lock shaft alternator.

I used cheap electric impact gun and worked like a charm

😢I just broke those thing that need M10 with 12 points but I used T50 bit 6 points so I had no choice than to remove the alternator out and there is no way than to use “ electric Wrench / IMPACT with spline 33 “, It’s done no more than 3s, Wondering why didn’t I use this method than by those manual tools it’s so hard like hell ( I’m not a mechanic) Then I put a new INA (OAP) pulley back but I cannot use any Torque wrench either, so I shot twice with electric Wrench impact twice a second each with hope just close to torque value without break the new pulley, DONE ! I believe by running the car it will help to torque themselves 😂to the value 85NM* It seems now is running fine without “clang weird noise “. I did replace the pulley because even after replacing the Tensioner, the weird noises and the tensioner was goggling too, the most culprit was the seized pulley’s 😂solid no clutch! IF you don’t have any experience like me to do this but you have to, remove the alternator from the car, check the right tool for… Or just use electric impact that we use for replacing wheels with spline, a second done ! Lesson to be learned 😅 Good vid, thanks

IVE GOT a noisy one and works fine and i tested spraying some oil around the back and it went away, could be dry bearings but I'm going to change it as I'm on 70k as they say 60-80 is around fail rate

When mine went it would make a really loud screeching noise like like dry metal to metal, it started of as what sounded like a bit of belt screech then one morning the thing didnt stop screeching untill i got to the end of the road, i pulled over and took the cap off and started it up it would screech intermittently and you could clealy see the pully spinning a lot faster than the inner spindle, mine just lost its ability to grip to bring the alternator up to correct speed, its was a weird drive to the engine would pulse away with randam battey lights, mine has a vacuum pump on as well so it was also playing havoc with the brakes and turbo

yes agreed, a locked alternator pulley makes some strange noises that are hard to locate

Can we use OAD type Pulley in place of OAP?

My alternator pulley is bent. Could that cause the belt to run off the pulleys to one side? I'm considering whether to replace the entire alternator or just the pulley. The car has over 300,000 miles

Craig. Just wondering if you can remember wether your pulley noise got worse after driving for a while and more noticeable under certain loads?

did you change the crankshaft pully graig ? i was going to give mine a go and wizz it off with an impact but im not too sure weather it be safe enough without locking the crank

Hi what size splined tool was it to fit fords?

How to solve the entire disassembly of the gear block internal maintenance

Does an alternator pully contain a bearing

Good vid, but you where trying to unscrew the wrong way, looking at you unscrewing at the end it is just a normal right hand thread .

I don't understand how the shop used an impact wrench to drive the splined socket with the hex nut tool in place. It's a pick you couldn't watch them undo it. I wonder if the held the splined socket as you did with a ring spanner in a vice and used the impact wrench on the hex bolt?

Could an overrunning pulley cause less voltage from the battery? I'm getting less than 10.5 volts

is it not possible to take out the pulley alone, without taking out the alternator,,,,?????????

If the pulley is gone,does it cause charging issues?for instance charging ok in low revs and not charging in high rev s?

Hello Craig, you think that it was seize because that little cap was missing? Thx

I guess, you did hear that before ... but you could be double for Damian Lewis

I'm getting a whining noice from my alternator. Could it be from this?

Instead of changing the pulley, the problem could just be solved by replacing the alternator right?

Air gun..eyze

Did ya say I must of loosened for you ?.

From what i know, you don't really need overrunning pulley if car have automatic transmission.

So the lesson if you dont know how things goes on or if you don't have right tools, do not start the job?

Your issue was definitely cause you were turning the wrong tool lol. Turn the black spline tool counter clockwise the through tool is just to hold in place. This can literally be done by hand.

BEWARE: not all these pulleys have a logical reverse thread. I have a Denso alternator and it’s a standard thread.

Great tutorial video, you sound very English but donate in $ use lug nuts & wrenches🤔

I watched all that bullshit, then you had it done in the shop!! Nice one 3 fingers🤣🤣🤣

Looks like you need a VICE GRIP. I can't watch anymore of this because too much knuckheadom is going on here.

your using a torque too to loosen a nut, thats a no no. could have used an impact drive!!

uses a torque wrench as a bar to try and undo the pully .... big fail torque wrench now not within calibration

Just drop a engine mount so you dont have to take the altonator out

I love how everyone in Europe gets to just buy INA German made bearings/pullye's for only 40 dollars U.S. In USA, we are so greedy and screwed up that we just have chinese bearings/pulleys for 60 or even 90 dollars. America is so stupid.

9:20 why the fuck are you using a torque wrench to open the Allen bolt?

You were pulling on the wrong tool my guy 🤣 you have to pull on the spline socket not the hex , good video though

Excellent job thank you.

yr just British thats all, nothing to be ashamed of

Just buy hybrid vehicles next time do not have them alternators do not even have belts