Wheel hub bearing removal

[Biddlecombe]

Further. I have purchased axle/diff gasket and modern lip seal for diff end, is it a difficult job to replace these?

It might be best if you tell us what year your axle is?
If the inner area of the axle casing where the felt seal and its cup fit is standard the job should be strait forward to fit the lip seal.  It will depend on which axle you have and which seal you have and whether any predecessors have made any modifications.  On my heavy axle (1938 on)  there appeared to be a ring inserted in the housing.  This was the right diameter to take a lip seal.  The seal is a metal inner cup covered in rubber and with a spring around the inner diameter to hold the rubber against the shaft.  To put the seal into the housing you need to be careful not to distort the metal inner of the seal.  You need to take the spring out and insert a tube with large enough inner diameter to just go over the seal inner diameter rubber shoulder and just the right outer diameter to fit within the outer seal rubber without distorting the rubber outwards.  The ends of the tube should be square to its length, the seal can then be pressed in gently keeping it square to the housing.  GENTLE taping equally around the tube alternate side to side can do the job if no press available.  Using a drift against the seal inner part is quite likely to end in distortion and tears.
The difficult part if the seal is at all a tight fit is keeping the seal square to the housing.  The job could end up being as easy as just being able to press the seal into the felt cup carrier with your hands and fitting cup back in with its spring ring retainer.
Tip: I have found old tapered wood legs from a table/stool etc. can be useful cut down at the right diameter part for putting against the seal from the back to push it out again if it starts tipping over......also good for tapping out/pressing bearings.  Three legged furniture in house......I tell the wife I found woodworm on leg so had to cut it off 

Concurrently with that job and casing gasket renewal you may have to re set the crown wheel and pinion mesh (side to side movement/clearance of diff carrier as well as how far the pinion teeth are meshed forward/back with the crown wheel.  Depending on which axle the methods of adjustment are different........there is a man in Cornwall who has the works setting up tool/rig which makes it easier.  Shims may well be required for setting side float of diff carrier and forward/backward mesh of teeth.
Suggest you do a lot of searching on this (where it has all been covered) and other sites to see in detail what is involved.
Also remember that whoever previously played with the axle may not have assembled properly so do not just put back what you find.....check the spares catalogue, other 7 club websites etc to see how things SHOULD be.

Where are you....there may be an expert nearby.  Good luck.

Dennis

Thank you for such a helpful post Dennis, firstly I am on East Sussex Coast and Gary Edwards is a great help but I know he is busy and I don't want to keep bothering him, and I need to learn myself!
The axle is as far as I can tell, just like all major parts of the car, original, dated 7 32. It fits with Woodrow, but I find this lacks the little nuances that you guys can give!
I am a bit slow at the moment as I had a VERY minor stroke like episode on Monday, so I will try separating the bearing and seal from the hub this afternoon after "mother" has gone to work.
Regards, Peter