Oct 27, 2010
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I have a Rapido 741F which is for us a great van but can anyone explain the following.:-
At 320000 miles I had the cambelt changed as a precaution.
At 37000 miles the cambelt broke in France and a new head was required.
At 410000 miles the cambelt broke in Switzerland. Damage not yet known as the van is in transit home with the AA.
Am I just unlucky or is there something causing them to break?
Dec 11, 2010
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I lifted this off the EGS Motors website, a member of the good garage scheme. I have never had any dealings with them.
What causes the cam belt to fail?
1. Oil & fluid which leaks onto the belt can be injected into the belt as it runs over the pulleys, this can vary the dimensions of the belt and cause the teeth to not mesh with the pulleys.
2. Seizure or collapse of bearings of idler pulleys, pumps etc, can cause the cam belt tension to be lost allowing the belt to jump the teeth on sprockets causing loss of synchronization and usually major damage.
3. Misalignment of pulleys can also cause premature belt failure.

Did you have your belts done by a reputable garage using reputable parts?