My umm has passed the annual inspection again. One thing the inspector noticed was an oil leak from the rear differential. I had noticed this myself, and so I decided to try to eliminate this oil leak.
My UMM has the GKN (English) axles
The difficult part of this operation is to remove the nut holding the flange on to the pinion shaft. It is very tight, and it’s difficult to prevent the flange from rotating.
This is the method I used.
Once the flange was held, a 28mm socket was applied to the nut with a long torque wrench.
Then, I raised the car as high as I could and then slowly dropped it down, putting the weight of the car on the torque wrench and support bar. This loosened the nut, which I could then remove.
It is recommended to mark the nut and shaft, before loosening, to help with reassembly to the correct position. If the nut is tightened too much, the axle alignment will be affected.