If the oil was low, then the damage is done. The bearing most likely need to be replaced. Adding fluid will not cure the problem.
May, 20, 2012 AT 4:24 AM
Thanks to your answer
What I understand the differentail is ok.
Which bearing need replace it
May, 20, 2012 AT 10:57 AM
IT is just not a matter of fitting a new bearing if it is noisy, the carrier bearing that support the differential must be preloaded to a precise tension and the setting up of the crown wheel and pinion to obtain the correct backlash is also extremely critical, this should only be done by a qualified mechanic that is competent with this type of specialist work, otherwise it will just be money wasted.