Re: Tensioner top bolt - Saab 9000 Bulletin Board - Saabnet.com
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Re: Tensioner top bolt
Posted by LeonB (more from LeonB) on Fri, 5 Nov 2004 10:31:58
In Reply to: Tensioner top bolt, Yaofeng, Fri, 5 Nov 2004 04:50:59
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I had about a 1/3 of the casting break on my '94CSE
See posting at: http://www.saabnet.com/tsn/bb/9000/index.html?bID=191207
My solution was to drill deeper and insert a Helicoil thread repair coil.
I believe the casting can break because the 8mm bolt is not threaded deep enough. Since you have the engine on the stand, there are a few improvements you could do, IMHO: (1) drill the hole deeper another 6-10mm and tap new threads in it. (2) use a 3/4" washer between the hole and rubber bushing in the tensioner (so pressure is spread out on a larger area (3) use a v-band clamp or other small steel clamp and tighten around the casting just to give it more rigidity.
posted by 65.95.237...
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