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Fan Belt Rubbing Degrading

Posted: Fri Jun 04, 2021 1:56 pm
by adrianscott
Hello!
Fan belt rubbing against rear engine mount nut (top red circle) which is degrading the fan belt! Found the two nuts not attached to engine mount 2 months ago so this is a new scenario for the engine position ie nuts more elevated to engage mount!
With shims I cannot bring the belt far enough away from the nut: should the fan belt be in the most upright position possibe or not?
Don't want to - but could shave a mil or two off the nut.
Anyone had any experience of this? Any thoughts?! Thank you

Rear engine mount nut2.jpg
Rear engine mount nut2.jpg (49.81 KiB) Viewed 777 times

Re: Fan Belt Rubbing Degrading

Posted: Fri Jun 04, 2021 2:43 pm
by neilbardsley
No experience but have you tried putting some shims in behind the generator pulley to move out a bit. Do you have a 9.5 (not 10mm) belt? Might give you the clearance you need?

Sent from my M2004J19C using Tapatalk

Re: Fan Belt Rubbing Degrading

Posted: Fri Jun 04, 2021 4:17 pm
by robs912
I might be wrong but I dont think those are the correct engine mount bolts.
Rob

Re: Fan Belt Rubbing Degrading

Posted: Fri Jun 04, 2021 6:38 pm
by SeanP
They most certainly aren’t the right bolts because they should be nuts like this

https://www.rosepassion.com/en/diagrams ... 3-nut-9613

Re: Fan Belt Rubbing Degrading

Posted: Fri Jun 04, 2021 8:46 pm
by adrianscott
Thank you all. Didn’t know two types of belts existed!?
Incorrect bolts left side threaded all the way through casing!
Correct bolts on right hand side. Ironically correct bolts stick out further.

Re: Fan Belt Rubbing Degrading

Posted: Fri Jun 04, 2021 8:48 pm
by adrianscott
Using fan belt no 999 192 006 50

Re: Fan Belt Rubbing Degrading

Posted: Fri Jun 04, 2021 9:03 pm
by adrianscott
Roger Bray belts
Part Number: 999.192.006.50
Details: FAN BELT 356 / 912. 9.5 X 825mm (V BELT NOT TOOTHED) Genuine Porsche.

Re: Fan Belt Rubbing Degrading

Posted: Sun Jun 06, 2021 10:37 pm
by Timo
Hi Adrian,

Just a thought but is your dynamo sitting in the correct position, do you have the correct gasket between fan housing and fan backing plate for example?