GTB1959

Dear Barbalatte,
The parts of the diff will normally reveal if the failure was defect or abuse. The way a diff works is in its name "differential". The gears within it work hard only when one wheel is turning at a different speed to the other. If it is a defect, the gear can break if the metal of the gear has a flaw in it or was not of the correct compound. In the case of a flaw, the appearance of the metal at the break would be very different. If it was due to the gear pulling back into the casing, the premature wear would be evident in the gear housing.