The customer did not request service, and replaced the broken support arm by themselves.No pictures or parts were received for further investigation the support arm is a casting, and it most probably developed a crack at an earlier occasion either by overloading, or impact, and this led to the reported breaking.Previous investigations led to a redesign and a change of the manufacturing process in order to obtain a higher mechanical strength of the support arm.This change was implemented in production during september 2009.However, since no pictures, or parts provided for our investigation, the root cause of the broken support can not be established.
|