diamond washer

[audinut]

Hi guys , theres a post in wanted about the diamond coated washer between the pulleys

i didnt notice it when i did my belt

1. should i have noticed it?
2. if it isnt there am i headed for catastrophe
3.may it have been stuck to the front pulley ?

[AndyP]

It could have stuck to the pulley, I seem to remember that if it's missing the cambelt will 'walk' to the back of the cam pulley.

[Greg_S]

1. Its easy to miss if you arent aware of it. Many moons ago I did a cambelt change and forgot to change it without ill effect, however I would recommend changing it.
2. Potentially as this is the part that ensures that the wood ruff key does have to take all of the torque
3. Most likely, I had to remove the 4 bolts from the pulley to pop it out

HTH

[Error404]

So this goes between the sprocket and the crank nose?

[Pat D]

3. Most likely, I had to remove the 4 bolts from the pulley to pop it out

Same on mine.

[macspring]

Any photos of said part, and where it goes ?

Thanks.

[Pat D]

Sits loosely in there, you have to remove the belt gear to get to it.

[minim]

Hope I'm not hijacking the thread now.. This is the one between the belt pulley for alternator/ac/servo and the pulley for the cambelt? Is it the same on the ADU engine and should it be replaced at every cam belt change?

[K Simmonds]

I hope I'm right in thinking 3B's don't have this washer? Changed my cam belt last week and I'm 100% certain there's not one on my car.

[sidrick]

I hope I'm right in thinking 3B's don't have this washer? Changed my cam belt last week and I'm 100% certain there's not one on my car.

Ditto

[spink]

3bs dont have one,anyone who forgets to fit it on an aby or s6 will soon find out why its needed,btdt

[saltinot]

After the bolt has been torqued to spec and you can't turn the pulley because it's binding on the front of the engine is a good indication that you need one.

[Error404]

There definitely wasn't one on my AAN engine when I stripped it down. Is it just ABY/ADU?

[elaw]

There's a thread here: http://www.motorgeek.com/viewtopic.p...=damper+washer that explains it to some degree.

As I understand it on the AAN, earlier-production units had two different dampers, and later-production ones a third. In the parts system, the earlier dampers supersede to the late one. And the late one is the one that requires the washer. So if your engine is late-production or has had the damper replaced, it should have the washer, otherwise not.

Seemingly the way to tell is that when you put the cam pulley onto the "snout" on the damper, if the snout is almost in contact with the key on the pulley you don't need the washer. If it's about 2mm short of hitting the key, you need the washer.

[diesel des]

Interesting stuff as I'm building a stroker for my urs4 at the moment...

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