Quote:
Originally Posted by Mike I
I would only suspect the screws to be the problem if the cracks are coming out from under the top frame where the attach hardware is located. If the cracks are running across or near the hardware location, but not going up under the frame, the cracks are not likely being caused by contact with the screws. Post a picture or two, and let's take a look.
Another thing to consider is the side mounts holding the windshield in place. If the mounts were not properly shimmed to the steel support hoop behind the instrument panel, that would surely induce torque in the windshield that would cause it to crack. I know from experience on my own E-M and Tom Wells' E-M that the thickness of the shims required is significant (1/2" or more).
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Mike I,
The mounting/shimming seemed likely a contributor if not main contributor even if other issues like typical screw length cracks are involved. Mike shared with me that his windshield, as originally mounted was like 3/4" off center.
He'd worked toward remedying that by moving the passenger windshield frame down leg to the other side of it's under dash mount with a shim. It still seems likely that is a contributing cause. Perhaps the frame bent with prior off center mounting due to bolt torque down. The entire frame itself seemed a bit torqued to me, possibly also contributed by the extend/nature of the lean back (possibly somewhat inconsistent per side as well).
Would you or Tom W. have photos of your underdash windshield frame mountings for reference. Also, do you know if the shim thickness and location(s) are typical of your arrangements, or commonly varied significantly as needed within the same model/era as Mike's EM?
Thanks, Brent