Part number for roller pulley bolt

[sidrick]

I've just received a whole load of parts for my upcoming 3B timing belt renewal and need to know what the part number for the roller pulley bolt should be:



The pulley is item 12 in the diagram.

The definitive sticky thread told me this bolt should be N0103681, but this bolt looks much too thin for the hole.

The diagram isn't clear, but is the bolt #11? N01036112

[sidrick]

Sorry, info was actually taken form the table/guide on s2central.net.

[UrS4boy]

I've just received a whole load of parts for my upcoming 3B timing belt renewal and need to know what the part number for the roller pulley bolt should be. The pulley is item 12 in the diagram. The definitive sticky thread told me this bolt should be N0103681, but this bolt looks much too thin for the hole. The diagram isn't clear, but is the bolt #11? N01036112

It's not 11, and I don't think it is 10 or 13 either. Why not just reuse the bolt that is there? It won't be a stretch bolt so you can re-use it.

This photo of the front of a 3B (from someone here, thanks ) shows the relative size of the heads of the bolts. The one you need looks bigger than 10 and 13 but maybe the same size as 11 (on the left of the photo)

[simon20vq]

I did the cambelt on mine but that does not look like its in the right position? The bolt is about 50-60mm long and only m8 from memory.

[sidrick]

Cheers guys. I could just reuse the old one, hopefully, but that would be the only bolt in the whole process that I'd be reusing. That's a helpful photo. Definitely not #11

Simon, the bolt I got matches your description but doesn't look right at all :s Does the roller pulley push on to a mount or something? I could understand the size difference then.



Maybe someone has a better diagram with the bolt shown?

[simon20vq]

yes it does mate the bolt basically keeps it from coming adrift

[mcandmar]

Cant remember the size as its been a long time since i worked on a 7A/3B timing setup. The idler pulley sits into the top of the oil pump, there is a recessed hole the pulley sits into so the bolt just holds it in place and takes very little load. Just re use the old bolt and dont worry about it.

[sidrick]

If it sits on a mount then I'm sure that bolt is correct I had a feeling I would be wrong rather than any info on s2central.net

[UrS4boy]

N 0103681 shows under the listing for item 12 but it is ambiguous as to whether it is for a 3B not. Says it is an M6 x 62 hex head.

[mcandmar]

Having looked at the part system i am 99% certain thats the one you need.

[sidrick]

Gents, as always, thanks you