Crank Pulleys: Interesting Video

Unread post by **CitroJim** » 21 Sep 2011, 20:01

Everything you wanted to ever know about Crank Pulleys but was afraid to ask...

I believe the 2.0 HDi has a decoupler type. Doesn't stop it failing though

Unread post by **myglaren** » 21 Sep 2011, 21:50

I thought the dual-mass pulley was supposed to do that - in fact the Freudenberg pulley is just that.

Looks impressive but no doubt they show the best bits and 'forget' the other less impressive ones.

There is a Freudenberg pland a few miles from here and we used to supply them with signage, always wondered what they did.

Unread post by **CitroJim** » 21 Sep 2011, 22:04

myglaren wrote: There is a Freudenberg pland a few miles from here and we used to supply them with signage, always wondered what they did.

Sounds like a South African provincial town...

I wonder that about a lot of firms you see in industrial estates... In MK there was once a big outfit called 'Eurobuns'

Turns out they made the bakery items for McDonalds and the ilk...

They've gone now... Shame the same can't be said about McDonalds really...

DickieG · Unread post by **DickieG** » 21 Sep 2011, 22:38

The latest pulley Citroen supply for Xantia HDi's is solid, IIRC made by Corteco,,,,,

vince · Unread post by **vince** » 21 Sep 2011, 23:32

Great video link Jim, this will be interesting for my guys at work

I see many times mechanics replacing ribbed belt tensioners where its clear the crank pulley is the cause of the problem

Chris570 · Unread post by **Chris570** » 22 Sep 2011, 07:47

DickieG wrote:The latest pulley Citroën supply for Xantia HDi's is solid, IIRC made by Corteco,,,,,

i'll have to open the box i got from citroen then

citronut · Unread post by **citronut** » 22 Sep 2011, 08:10

i like the bit were he says on modern vehicale's most auxiliary units are driven by a single V belt

,

thats his first mistake how many more are there,

regards malcolm

HDI · Unread post by **HDI** » 22 Sep 2011, 09:03

The failed one I removed from mine was like the one in the video but the replacement from a motor factor looked solid. It isn't of course, just an improved design of decoupled pully.
I had always wondered why my tensioner oscillated so much ! It's completely smooth now.

Unread post by **RichardW** » 22 Sep 2011, 09:46

My Xantia is still on its original pulley at 121k - no discernable play when we changed the belt at 110k. No idea why that should be when most go at <80k

Just saving up trouble for another day, and I'll have jinxed it now

HDI · Unread post by **HDI** » 22 Sep 2011, 10:50

Mine reached about 170 K miles before it was about to totally fail. However, I had noticed the tensioner oscillating from about 120 K miles so it was probably on it's way out then I just didn't realise it !
The replacement is a Corteco from a factor.

andy5 · Unread post by **andy5** » 24 Sep 2011, 09:41

The guys who changed my cambelt insisted on changing the pulley and a tensioner or two at the same time.

At 121 thousand miles that was, so it presumably wouldn't have lasted much longer if I'd declined.

Unread post by **Paul-R** » 25 Sep 2011, 12:07

citronut wrote:i like the bit were he says on modern vehicale's most auxiliary units are driven by a single V belt ,

Bearing in mind that's it's probably translated from German I think they mean a single belt rather thana single V.

Certainly poly-V belts are just about universal whereas there aren't that many cars with more than one belt.

lexi · Unread post by **lexi** » 27 Sep 2011, 22:21

Anyway: I have told friends and family not to phone or come round ............I have an evening watching crank pulleys

Xaccers · Unread post by **Xaccers** » 27 Sep 2011, 22:31

Can I just say, that cyclist at the begining is bloody insane!

red_dwarfers · Unread post by **red_dwarfers** » 28 Sep 2011, 21:18

I really wasn't going to watch that video Xac. Now you've mentioned something that should be completely unrelated, I must