Bent flywheel?!

[minnnt]

We've recently been experiencing problems with our tracked 190 chipper. I work for a local authority and for the last four times that we have taken it in for blade changes i have reported that it has stopped self feeding. i.e. just dragging in branches etc without stopping to build the revs back up. (not entirely sure what this is called) but this would cause the chipper to stall and then we would have to undo the shoot and clear all the chippings out before it would restart. This last time after filling an accident form in regarding something that happened because of this fault, the garage department has decided to get the dealers in to diagnose the problem. Our mechanic never fixed the problem even when reported. (probably over 6 or 7 months) The dealer has now said it is a bent flywheel. Would this cause the problem mentioned and what could cause it? The machine is used by around 45 different people, but primarilly by my team and non of us can remember any steel bars etc going through it to inflict such damage.

 

Got a feeling that the management are going to try and nail us for the damage which has been costed at £6,000. Just looking for a few facts and ammunition to back me and my team up. They can't really pin it down to a select few as like i said the whole department has used it at some time.

 

Thanks alot. David.