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missing fan belt shim: ok to drive or better to stay in the garage?
HI all,
I've just replaced the fan belt with a new one. I have discovered that I was running only with 5 shims (reading on the forum they should be 6). I've ordered a new set of shims, in the meanwhile can I drive the car or a too tight belt can damage the fan ? At the moment I have avoided to over-tight the fan nut. Also how can I be sure the fan belt has the right tension ? The old belt was surely too loose but the new one (only with 5 shims) seems too tight thanks in advance
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911 2.4T from 1973 Gemini Metallic Blue |
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07-04-2017, 04:03 PM
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Location: Portland, Oregon
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You need all 6 shims to ensure you do not bottom out the nut and damage the alternator thread.
I would not drive it.
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Harry 1970 VW Sunroof Bus - "The Magic Bus" 1971 Jaguar XKE 2+2 V12 Coupe - {insert name here} 1973.5 911T Targa - "Smokey" 2020 MB E350 4Matic |
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07-04-2017, 04:10 PM
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Also, you move the shims to either between the pulley halves or outside of the outer one to adjust the belt tension. You should be able to deflect it with your thumb.
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Harry 1970 VW Sunroof Bus - "The Magic Bus" 1971 Jaguar XKE 2+2 V12 Coupe - {insert name here} 1973.5 911T Targa - "Smokey" 2020 MB E350 4Matic |
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07-04-2017, 04:12 PM
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If you have not seen this yet, this article may be helpful. Porsche 911 Fan Belt Replacement | 911 (1965-89) - 930 Turbo (1975-89) | Pelican Parts DIY Maintenance Article
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Harry 1970 VW Sunroof Bus - "The Magic Bus" 1971 Jaguar XKE 2+2 V12 Coupe - {insert name here} 1973.5 911T Targa - "Smokey" 2020 MB E350 4Matic |
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07-04-2017, 04:18 PM
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When I replaced my fan belt for the first time a few years ago.
I did not realize one of them fell down in the well below the lower pully. Those shims are real thin. I was baffled when I only counted five. I put the belt on and could not get the tension right. Think goodness for flash lights. |
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07-04-2017, 06:35 PM
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Hi Fizeus..i have seen a lot of 911 with wrong amount of washers and they drove like this for while.Yes you can drive but get your self new washer...if you cannot find one i can send you one for free i am next to you, very close...
here is the order how they should be on ... Ivan 
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07-04-2017, 11:02 PM
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thanks you for your replies ...
I searched for a hidden shim in the lower pulley zone but I was unlucky ... probably it has gone lost some hears ago when the alternator was rebuilt... proporsche ... PM sent ! ;-)
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911 2.4T from 1973 Gemini Metallic Blue |
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07-05-2017, 03:15 PM
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hi fizeus..sorry i do not see any Pm..?;-)try the mail...
Ivan |
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07-05-2017, 10:37 PM
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