TDI bottom pulley

pyro · May 2nd, 2023, 18:40

Hi all,

I.ve got what may be a daft question, but...

The bottom pulley/damper on the 2.5d, should the aux belt drive grooved pulley be tight on the pulley?

Im slowly working my way through doing the cambelt, and i was struggling to get the upper and lower tin plates/dust guards out.

With a bit of persuasion I managed to pull them out and parts of the plates have been polished clean and thin in a few places. When poking at the bottom pulley with a screwdriver the grooved pulley that drives the auxbelt can be wiggled around, appears almost spring loaded back towards the engine.

I'm assuming this isn't normal and a new pulley is required!
I've got to take it off anyway to do the belt so... lemme know if its normal or not!

Thanks!

Ben

Martin Cox · May 2nd, 2023, 18:55

I'd say it's not normal. It sounds as though the rubber is close to failing. If it does fail, it's a hefty piece of spinning metal to come free and the results are unlikely to be pretty.

It's a while since I did mine but so far as I recall you couldn't move the inner and outer parts of the pulley relative to one another with any normal amount of hand force.

If it were mine I'd be replacing it asap.

However I suspect it may now be a part that Volvo have discontinued so you may be forced to go for an aftermarket one unless VW/Audi still do them.

Martin

1998 V70 Tdi

pyro · May 2nd, 2023, 19:01

Cheers Martin, appreciate the confirmation.

I can move it with 1 or 2 fingers. It seemed like it was intentionally spring loaded, having looked a bit further into it it's not an even movement around the circumference of the pulley.

I'll start hunting for a replacement!

Ta.

hal9000f · May 2nd, 2023, 19:26

Quote:

Originally Posted by Martin Cox

I'd say it's not normal. It sounds as though the rubber is close to failing. If it does fail, it's a hefty piece of spinning metal to come free and the results are unlikely to be pretty.

If it were mine I'd be replacing it asap.

However I suspect it may now be a part that Volvo have discontinued so you may be forced to go for an aftermarket one unless VW/Audi still do them.

It failed on my 855 TDI, horrendous noise and it took the serpentine belt tensioner with it. Ugly experience. Luckily I was literally 150 meters from my usual service station.

I have replaced it for the third time couple of months ago. Made by SNR...

Check out the scary photos.

pyro · May 2nd, 2023, 19:56

Aye, that looks painful!

A replacement ordered INA (i think) with new bolts and washer. OEM was far to much at the moment unfortunately.

I'll get some pictures once Ive got it off, probably Friday or Saturday. There looks to be lots of excess rubber dust (up to 6mm!) and snot in the whole area.

Ben

Baffler · May 2nd, 2023, 20:02

There's also a complete kit, including screw and diamond washer, from GT Automotive https://www.ebay.co.uk/itm/272597560427

https://gtautomotiveparts.co.uk/

If you do purchase I'd be interested to hear any feedback you may have as I plan to purchase the same.

Baffler · May 2nd, 2023, 20:05

Doh! Just read you have replacement ordered.

dingov70 · May 2nd, 2023, 21:07

OOh thats nasty , when my TDi had a fit & fell apart i used these folks

https://www.heritagepartscentre.com/uk/

And said was the Audi AEL 2.5 tdi engine I got everything I needed including the diamond coated washer . YOU MUST fit the diamond washer between damper & sprocket , then find someone with a proper cordless impact wrench and give it everything it has . My local Indie used this technique and never had one fall apart

pyro · May 2nd, 2023, 21:25

Quote:

Originally Posted by Baffler

There's also a complete kit, including screw and diamond washer, from GT Automotive https://www.ebay.co.uk/itm/272597560427

https://gtautomotiveparts.co.uk/

If you do purchase I'd be interested to hear any feedback you may have as I plan to purchase the same.

Thats the one I ordered actually!

should get it fitted this weekend, unless theres owt to watch on the telly (cough)...

Thanks!
Ben

pyro · May 5th, 2023, 16:50

One, or two halves of the bottom pulley.

The pulley has taken chunks out of the cam belt tensioner bolt whilst spinning.

So. My advice, if you haven't already, stick a new pulley on next time round!

Now to try get it back together!

Cheers
Ben

May 2nd, 2023, 18:40	#1
pyro Volvo V70 2.5D Last Online: Jun 19th, 2024 22:46 Join Date: Mar 2006 Location: york	TDI bottom pulley Hi all, I.ve got what may be a daft question, but... The bottom pulley/damper on the 2.5d, should the aux belt drive grooved pulley be tight on the pulley? Im slowly working my way through doing the cambelt, and i was struggling to get the upper and lower tin plates/dust guards out. With a bit of persuasion I managed to pull them out and parts of the plates have been polished clean and thin in a few places. When poking at the bottom pulley with a screwdriver the grooved pulley that drives the auxbelt can be wiggled around, appears almost spring loaded back towards the engine. I'm assuming this isn't normal and a new pulley is required! I've got to take it off anyway to do the belt so... lemme know if its normal or not! Thanks! Ben

May 2nd, 2023, 20:02	#6
Baffler Premier Member Last Online: Jun 17th, 2024 13:57 Join Date: Dec 2002 Location: Co. Limerick, Ireland	There's also a complete kit, including screw and diamond washer, from GT Automotive https://www.ebay.co.uk/itm/272597560427 https://gtautomotiveparts.co.uk/ If you do purchase I'd be interested to hear any feedback you may have as I plan to purchase the same. __________________ Liam... '96 854 TDI SE, '99 V70 2.5D S, '05 C70 2.0T Collection, '05 S80 2.0T SE, '15 V70 D4 SE Lux Nav.

May 2nd, 2023, 20:05	#7
Baffler Premier Member Last Online: Jun 17th, 2024 13:57 Join Date: Dec 2002 Location: Co. Limerick, Ireland	Doh! Just read you have replacement ordered. __________________ Liam... '96 854 TDI SE, '99 V70 2.5D S, '05 C70 2.0T Collection, '05 S80 2.0T SE, '15 V70 D4 SE Lux Nav.

May 2nd, 2023, 21:07	#8
dingov70 Master Member Last Online: Today 16:35 Join Date: Jan 2015 Location: Blackpool	OOh thats nasty , when my TDi had a fit & fell apart i used these folks https://www.heritagepartscentre.com/uk/ And said was the Audi AEL 2.5 tdi engine I got everything I needed including the diamond coated washer . YOU MUST fit the diamond washer between damper & sprocket , then find someone with a proper cordless impact wrench and give it everything it has . My local Indie used this technique and never had one fall apart __________________ To stupidity & beyond

May 2nd, 2023, 18:55	#2
Martin Cox VOC Member Last Online: Today 21:44 Join Date: Dec 2001 Location: Hull	I'd say it's not normal. It sounds as though the rubber is close to failing. If it does fail, it's a hefty piece of spinning metal to come free and the results are unlikely to be pretty. It's a while since I did mine but so far as I recall you couldn't move the inner and outer parts of the pulley relative to one another with any normal amount of hand force. If it were mine I'd be replacing it asap. However I suspect it may now be a part that Volvo have discontinued so you may be forced to go for an aftermarket one unless VW/Audi still do them. Martin 1998 V70 Tdi

May 2nd, 2023, 19:01	#3
pyro Volvo V70 2.5D Last Online: Jun 19th, 2024 22:46 Join Date: Mar 2006 Location: york	Cheers Martin, appreciate the confirmation. I can move it with 1 or 2 fingers. It seemed like it was intentionally spring loaded, having looked a bit further into it it's not an even movement around the circumference of the pulley. I'll start hunting for a replacement! Ta.

May 2nd, 2023, 19:56	#5
pyro Volvo V70 2.5D Last Online: Jun 19th, 2024 22:46 Join Date: Mar 2006 Location: york	Aye, that looks painful! A replacement ordered INA (i think) with new bolts and washer. OEM was far to much at the moment unfortunately. I'll get some pictures once Ive got it off, probably Friday or Saturday. There looks to be lots of excess rubber dust (up to 6mm!) and snot in the whole area. Ben

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