VW mk4 tdi alh serpentine belt, alternator pulley, idler pulley, and tensioner removal and install

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I had a flashing battery light while accelerating hard, so I decided to replace the alternator pulley. While I was at it, I replaced the serpentine belt, idler pulley, and tensioner. After this procedure, the battery light no longer illuminates while driving. Enjoy the video and I hope it helps.
Link for alternator pulley:
amzn.to/2YHqf3V
Link for serpentine belt:
amzn.to/2NDSxWv
Link for tensioner:
amzn.to/3icZzja
Link for idler pulley:
amzn.to/2BmecQD
Alternator pulley removal kit:
amzn.to/2BVaIEv
Hose clamp cable pliers:
amzn.to/2ZfT1Ys
Bolt for idler pulley:
amzn.to/2AgeWX5
Two short bolts for tensioner:
amzn.to/2BPyBgY
Long bolt for tensioner:
amzn.to/3iiOopo
Serpentine belt kit:
amzn.to/3eLwpWb

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Опубликовано:

10 окт 2018

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Комментарии : 62

@tomjones5611 3 года назад

it was so hard to find a decent vid on the removal of the idler pulley for this engine. thanks

@Corysdiyauto 3 года назад

tom jones - I'm glad that you found mine. You're welcome!

@andrewcarter1222 Год назад

Like many of the other comments below, your video with clear images really gave me the confidence to tackle this job. Thanks a lot.

@Corysdiyauto Год назад

Thank you! Good luck with it.

@feliperomero641 3 года назад

To anyone trying to do this, know that finding the right tool for removing the alternator pulley is key. I found one but it didn’t have the clearance to accomplish this while still in the vehicle. Live and learn. Otherwise an easy enough job, though leaving the tensioner pin in until installed was a good move.

@Corysdiyauto 3 года назад

Felipe Romero - Thanks for the comment!

@feliperomero641 3 года назад

Kind sir, my gratitude. The ‘ol girl needs a little love and now I can do this myself. My mechanic might be a tad bummed but he will survive.

@Corysdiyauto 3 года назад

Felipe Romero - Thank you and good luck with everything.

@NeuroPulse 2 года назад

Thanks Cory for saving us common folk a lot of money.

@Corysdiyauto 2 года назад

You're welcome. That's my goal!

@HalfassDIY 3 года назад

Excellent video ! Thank you for posting all this incredibly useful information.

@soil-aint-dirt4903 Год назад

Well done…thanks for going through this with us and for posting.

@Corysdiyauto Год назад

Thank you very much.

@RKGraves 5 лет назад

Great Video - Thank You! I appreciate your time in sharing this video. And good-skill with your camera techniques. For Us it was the multi-point (non-Torx) bit that fit the shaft of the alternator. This is likely due to our alternator having been previously replaced. Again Thanks, gave me confidence to do the work.

@Corysdiyauto 5 лет назад

Randy - I am glad that I could help you out. Thanks for the compliment!

@carymcintyre7327 4 года назад

Great Video, Thank you for taking the time to make this, Im sure you have helped hundreds of us crazy VW lovers.

@Corysdiyauto 4 года назад

Cary McIntyre - You're welcome! I enjoy helping the "do it yourselfer" and that's why I take the time to make these videos.

@linuxwave 5 лет назад

Well done

@leroybrown9874 3 года назад

Thanks a lot. Was wondering why my torques bit had so much play in the idler pully bolt!

@jaawxyz5325 2 года назад

Thanks for the video ans being really clear with what’s what definitely helped alot !

@Corysdiyauto 2 года назад

You're welcome and thank you very much!

@simon7030 2 года назад

Great stuff got to do mine this week this has inspired me to do it,The front headlight complete should come out easily to get at the bottom intercooler pipe clip as it is difficult to put it back in.I know from when I did the timing belt on a previous tdi.

@Corysdiyauto 2 года назад

That clip is definitely difficult to get to. Thanks for the comment!

@intsstrals90 7 месяцев назад

Thx for info!

@Corysdiyauto 7 месяцев назад

You're welcome!

@eisernenfuchs123 5 месяцев назад

Does anybody know if you HAVE to take off the timing belt crap to change the accessory mount bracket for the A/C, Alternator, and Idler? My Idler portion snapped off the bracket, and need to know how hard it's going to be to change it all.😊

@chrisshave7129 2 года назад

Great vid thanks

@Corysdiyauto 2 года назад

You're welcome!

@braptechfun6036 4 года назад

Nice video; 13:33, shipping purposes are the last thing they think about. It comes tensioned to ease fitting, that new spring is hard a.f. to fully compress.

@Corysdiyauto 4 года назад

BrapTechFun - I thought that it was easier to install without the pin. I didn't want to have to worry about it once I had the tensioner mounted. Thanks for watching!

@8iodwarf 4 года назад

yea i was watching this to see if the tensioner hydraulic was supposed to be free floating, guess not lol

@tonygeloso4193 3 года назад

What happens with the engine timing. Does one have to lock the position of the crankshaft, camshaft, and fuel pump prior to replacing the belt, tensioner and idler.

@Corysdiyauto 3 года назад

Tony Geloso - This video is only for the serpentine belt change, which doesn't affect engine timing. I think you have this confused with the timing belt change.

@RGV2300 3 года назад

I replaced the tensioner and idler pulley, because the old tensioner was vibrating a lot due to a blown shock absorber (and this harmed the older idler pulley). Is it normal that the new one vibrates too? If i remember well, it wasn't vibrating a lot, like the old one, but i thought that the new would eliminate the vibrations completely. I haven't buy the belt yet, but i will do it today, just in case.

@Corysdiyauto 3 года назад

Rodrigo Godoy Valenzuela - The tensioner will always have some movement and that's because it's doing it's job of keeping the tension on the belt. Always replace the belt because it will stretch over time.

@yushaakadwa437 5 месяцев назад

Shake it! Is there suppose to be any play on the shock?

@banjoblast 5 лет назад

Isn't the pin in the tensioner to be pulled out after the belt is installed?

@Corysdiyauto 5 лет назад

banjoblast - I chose to do it before I mounted it in the car, because it's kinda tight to work in there. It worked out just fine that way for me.

@banjoblast 5 лет назад

@@Corysdiyauto makes sense, thanks for the video

@davidgreening173 3 года назад

Question. I have a family member with the 1.9Tdi engine. The idler pulley bolt has sheared off level with the block. Any ideas on getting it out considering the space limitations? Thanks.

@Corysdiyauto 3 года назад

David Greening - Ouch! That's going to be a tough one. I don't know if you can fit a right angle drill in there or not, but I would try that. Then, drill a hole in the bolt and use an easy out tool to extract the bolt. I hope the drill will fit, but if it doesn't, then maybe you can get somebody to weld a bolt head on it so that you can break it free that way. I hope you can get it out!

@davidgreening173 3 года назад

Cory Mondics ... I Haven't inspected the job closely, but would it be possible to drill a hole in the wheel arch and expose a direct line of access to the bolt ? The car is old, and a hole could be plated over and not cause significant worry with future value.

@Corysdiyauto 3 года назад

@@davidgreening173 - Maybe? That's a good idea. There might be some other things in the way that may need to be removed.

@davidgreening173 3 года назад

Cory Mondics - thought you may like to know... the guy bent a welding rod into the bolt hole, applied some current and the rod attached itself to the broken bolt. Once it cooled down it was pretty much like turning and Allen key.

@Corysdiyauto 3 года назад

@@davidgreening173 - That's good news! Thanks for letting me know. I'm glad that he was able to help you out.

@CharredRemainz85 4 года назад

Wheres the kit from

@Corysdiyauto 4 года назад

Bryan Martinez - I purchased it from idparts.com

@KingGene 4 года назад

Why did you replace the alternator pulley does it go bad? Also I did not see any broken parts and you replaced the tensioner, idler pulley and belt also was just because you wanted everything new? When my idler pulley went bad I just replaced it like two years again???

@Corysdiyauto 4 года назад

KingGene - The pulley does go bad before the alternator in some cases. I replaced the idler pulley, tensioner, and belt while I was in there as preventative maintenance.

@linuxwave 5 лет назад

Are you sure you have to replace all the bolts? It doesn't say you have to in the manual I have

@Corysdiyauto 5 лет назад

linuxwave - You don't have to, but I did anyways while I was at it. They are cheap to replace and some bolts tend to "stretch" when tightened to the proper torque setting.

@linuxwave 5 лет назад

@@Corysdiyauto Thanks for your reply. Do you still have the part numbers of these screws? I don't have kits available to buy with the screws included and the manual I have doesn't mention the parts numbers of the screws. Greetings from Germany

@Corysdiyauto 5 лет назад

@@linuxwave Greetings from across the pond in the USA! I just tried searching for the part numbers for the bolts, but I had no luck. I ordered them from idparts.com along with the belt and pulleys. I hope you can get them. Thanks for watching my channel and I hope it helps you.

@linuxwave 5 лет назад

@@Corysdiyauto Oh thanks, maybe I have to call up VW directly and see if they can give me the parts numbers.They still run these engines here pretty commonly in cars so I should get some parts, although the VE diesels are getting very rare here, too.

@Corysdiyauto 5 лет назад

@@linuxwave - Yeah, VW would be able to get those part numbers for you. Good luck!

@NeuroPulse Год назад

I don't think my mechanic got my plastic turbo tube back on right. I just noticed it's been rubbing on the belt next to the tensioner.

@Corysdiyauto Год назад

It definitely shouldn't be touching the belt. I would take it back to him and have him fix it the right way.