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Re: 90 degree TOOL?
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Posted by oldsaab (more from oldsaab) on Wed, 21 Jan 2009 16:01:11 Share Post by Email
In Reply to: 90 degree TOOL?, RayF, Wed, 21 Jan 2009 10:40:04
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Ray, there is a spec for the torque on the valve covers.

I always use the torque wrench on the valve cover for two reasons.

1) long ago when doing valve covers that were steel and could deform or depress and mess up the valve cover and gasket(often cork), requiring you to take it apart, hammer out the bend in the valve cover.. I learned...

2) I purchased a 1992 9000CDT auto that the local Saab shop had diagnosed with a leaking seal behind the crank pulley (the owner had all of the paper work and I read it). I purchased the car. drove it home. When we went to the trouble of taking everything apart and got right down to it... the area was dry as new would have been. Turns out that the left most bolt in the valve cover gasket, as viewed leaning over with knees on the bumper, the *last* one just *before* the 90 that makes the big end over the cam chains... the thru hole for the bolt was *cracked*!!! and it only presented itself under both heat and pressure. and was spraying oil out onto the back of the right side headlight and *everything* below it got drenched in engine oil. When we finally figured it out, we watched it do it's thing, an Oil spray bar like fuel injector! Someone somewhere sometime... did the overtorque thing... Like Gary always says, tight is tight, too tight is two pieces...



but then again, I could be wrong.... -Dennis Miller

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