Timing belt change

[Vorsprung durch Technik]

You’ve been here how long?

Was thinking the same.

[Michael S2]

There is two models of the AAN damper. Old style didin't have the washer, the newer one has.

Brilliant thanks for that

[s2driveruk]

Yes, the pulleys are different, the 3B uses a V belt and the ABY a multi rib. This is the TDi washer:-

https://www.ebay.co.uk/itm/WASHER-CR...-/113854380348

As John says, it just increase the friction between the pulley and the end of the crank

Aaah, ok makes more sense now, was feeling a bit of a plank for thinking it had escaped my notice but having a 3b...makes more sense

[AndyP]

Are there any physical differences between the 3B and ABY configuration?

What is the P/N for the TDI one ?

Yes, the pulleys are different, the 3B uses a V belt and the ABY a multi rib. This is the TDi washer:-

https://www.ebay.co.uk/itm/WASHER-CR...-/113854380348

As John says, it just increase the friction between the pulley and the end of the crank

[Thuppu]

Always been a bit of a mystery this diamond washer.

So 3B doesn't use it but S2 ABY, RS2 ADU and S4/S6 AAN do use it?

There is two models of the AAN damper. Old style didin't have the washer, the newer one has.

[Greg_S]

The 3B does not use the diamond washer, although I've fitted the TDi diamond washer on mine, it's on 0.3mm thick

Are there any physical differences between the 3B and ABY configuration?

What is the P/N for the TDI one ?

[Greg_S]

Ok so whats the deal with the diamond washer...? Never seen this before, is is treated in a particular way during production or something equally as funky or is it just dimensions...? If these are NLA, maybe we can get some made and hold a stock on the forum?

They are more difficult to get hold of, when i went to purchase on my last belt change they werent available from TPS or tradition. There were some on ebay but still about £20-30 a washer

[Michael S2]

Always been a bit of a mystery this diamond washer.

So 3B doesn't use it but S2 ABY, RS2 ADU and S4/S6 AAN do use it?

[newsh]

yep, couple of weeks now John! Everyday is a school day and all that. Probably means the last time i changed the belt, it wasnt an issue, not nla or i reused it...

Hehe, just taking the Micky, as Andy says the 3B doesn’t use the diamond washer.

I think it’s purpose is to put some extra friction in between pulley and crank to keep the pulley in place..

[AndyP]

The 3B does not use the diamond washer, although I've fitted the TDi diamond washer on mine, it's on 0.3mm thick

[s2driveruk]

You’ve been here how long?

yep, couple of weeks now John! Everyday is a school day and all that. Probably means the last time i changed the belt, it wasnt an issue, not nla or i reused it...

[newsh]

Ok so whats the deal with the diamond washer...? Never seen this before, is is treated in a particular way during production or something equally as funky or is it just dimensions...? If these are NLA, maybe we can get some made and hold a stock on the forum?

You’ve been here how long?

[rxl]

It goes on the nose of the crankshaft. I have one for sale

[s2driveruk]

Ok so whats the deal with the diamond washer...? Never seen this before, is is treated in a particular way during production or something equally as funky or is it just dimensions...? If these are NLA, maybe we can get some made and hold a stock on the forum?

[Greg_S]

How much are James’s bottom pulleys & are they still available?

Drop terrybullwon a message. Also check on ebay too. They are about £110 i think