Originally Posted by Will75
It has about 65k miles on it, just out of warranty. LR say it's the rear diff front pinion bearing.....sound reasonable.....they have quoted £600!
If the front pinion bearing has let go, that will mean the pinion has worn on the Crownwheel unevenly, where it tries to push away from the crown wheel. If you replace the bearing there is a good chance that the diff will whine anyway due to uneven teeth wear.If the bearing has chipped, some of the shrapnel will have travelled round the rest of the diff components and may have damaged them.
You might get lucky if you have caught it early enough, but the odds are against it.
£600 is a good price if that sorts it out, there is quite a lot of work involved to do the job properly. If they just pull the prop flange, pinion seal and pull out the bearing without stripping the diff out fully and cleaning it out, it will probably fall apart again pretty quickly.
Make sure you ask them to give you a written description of what they are going to do and a breakdown of parts and labour.