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Re: Fan belt alignment

Posted: Thu Jun 24, 2021 11:57 am
by InnoCooperExport
Peter Laidler wrote: Wed Jun 23, 2021 9:57 am Been following this saga on and off and it's clear that you have a mix-and-match dynamo/fan/pulley fitted to your car. However good your pics and try as we might I don't think that we are going to fix your prob from afar. It needs either a) replacement parts, b) a replacement correct dynamo or c) a lathe to start machining your parts to suit - or in the case of the spacers, to machine new ones to suit what you've got (which would be my tight fisted but hands-on approach!!)
Not just you, I'd vote option c as well! 3 minute job on a lathe.

Re: Fan belt alignment

Posted: Thu Jun 24, 2021 9:48 pm
by Coatescooper
Well thank you to everyone for there Input and in particular Andrew1967 for your very helpful photos.

Whilst the dynamo manufacturers, and some other sources are all telling me it’s the correct item, it is however clearly not quite right. The pulley whilst it might not be quite right, it is giving me the correct offset, the issue clearly stems from the spacer not going into the Dynamo far enough. I have looked at a few different machining options and I don’t really have the correct equipment to hand to undertake this work, plus this would be quite time consuming.

I have therefore just purchased a pack of 22x15x2mm washers, 2 or 3 of these to pack the dynamo fan out should in theory sort all my issues out. There due for delivery tomorrow, so let’s see!

Re: Fan belt alignment

Posted: Thu Jun 24, 2021 10:15 pm
by Andrew1967
Sounds like a plan and glad to help. :)

Let us know how it all goes .

Re: Fan belt alignment

Posted: Fri Jun 25, 2021 8:59 pm
by Coatescooper
Sorted. I’ve managed to get the pulley about 4mm further in, I was targeting 5mm though.

Three washers did the trick, they were a perfect fit around the Dynamo shaft yet still fitted into the recess on the Dynamo. Two washers would of been ideal, but the dynamo fan is a little misshaped, I might have to replace the fan or grind down some of the fins

Thanks for those pictures as they really helped in understanding where the issue was

Re: Fan belt alignment

Posted: Sat Jun 26, 2021 9:42 am
by Andrew1967
Excellent .. glad you have it sorted :D

If you need a replacement fan, let me know, I have one I can spare.