What is the reason for the left front shock mount failures on 90's buses?

[Don Bradner]

Yes, at least my shock (and I think Pete's) were bent. The cause in my case is
obvious - as the metal bent outward after the first break, the angle became too
great, and "crumpled" the end of the shock.

In other words, the damage to the shock definitely came as a result of the metal
tearing/bending, not vice-versa.

Don Bradner
90 PT40 "Blue Thunder"
My location: http://www.bbirdmaps.com/user2.cfm?user=1

On 3/11/2009 at 2:00 AM Eric Perplies wrote:

>First, CCW repaired my upper left shock mount in February of 08. This
>was the first one that they repaired.
>
>While at CCW we did thoroughly inspect the right front shock mount. It
>sure looked identical to my left shock mount. Dimensionally, I can't be
>sure. After all when you measure the shock mount I don't have a clue what
>you measure it with respect to. I had both shocks replaced and there was
>no damage at all to the right shock mount nor to the shock absorber.
>
>One important factor that I neglected to mention. My left front shock
>what shot when I found the failed shock mount. It could be compressed
>only with the greatest of effort. If hitting a hole had caused my left
>shock absorber to fail that certainly could have been a significant factor
>in the failure. That singularity would have eventually caused the piece
>of material on my frame to fail. It is still the chicken or the egg
>question: If the shock failed first what would have caused the neck of
>the shock to have bent? I'll see if I can find my photos of the damage,
>then I see if I can figure out how to post those pictures. You'll be able
>to see the "tweaked" neck on the shock.
>
>I wonder, did you others have a broken shock absorber when you found the
>damaged shock mount?
>
>I'm sure you are right Dave. The part that failed on my rig may well have
>been made by Ridewell. It probably is inaccurate to call it the frame.
>(Although it sure looks like the frame to me, LOL.) Thanks for
>recommending doing a search on "Shock mount". Over the last several years
>I probably have read all of them.
>
>Eric Perlies
>96' 42' WBWL