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96 860 GLT timing belt failed twice! 850 1996

posted by  Ken Temkin on  Wed Jan 5 05:44 CST 2005
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last visit: Wed Oct 22 12:06 CST 2014
[RELATED]

you said:

"They may have been installed too tightly"

Did you mean to say "too loosely."

In my thinking, if a timing belt is installed too tightly, it will likely fail by breaking the belt in a tension failure.

If the belt is installed too loosely, the belt is likely to remain intact, but it is likely to jump a tooth, or more, causing poor performace, or a piston/valve interference failure

This user said that the "timing belt [had] jumped" a tooth, so, in my thinking, the belt was likely to have been installed too loosely.

Regardless, on an 850, can you really install a timing belt too tight, or too loose? The fact is that the belt tension is controlled by the hydraulic tensioner, and has nothing to do with any installed tension.

So, in my mind, these failures have little to do with installation technique and more to do with a problem with the hydraulic tensioner, or some catastrophic failure, or some misalignment.






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