All - It appears that my rear axel oil seal is shot (see pictures below).

Question - Should I just replace the oil seal (9) or should I be replacing all components 9 - 11?
Bonus Question - Since I need to remove the flexible coupling to replace the oil seal, should I just bite the bullet and get a new one?

 

I would replace the centering peg and the rotoflex. Keep the old one for a spare on the trail.

 

Thanks for the feedback

UPDATE
I drained the rear diff and the oil was silver and clumpy. The drain plug was completely covered in metallic goo. I think I will flush the diff out.

 

Check you vent line. I have found the banjo bolt get rusty inside and blocks up. I also had my line full of mud.

 

I will do that, was already looking at how to disconnect from axel so I could clean

 

Do I really have to buy LRT-51-008 to remove the centralising peg?

Any tips on how to get this out, buy a bolt with the right thread pitch??

 

You don't need the LR tool. Have a look at the video below the peg is very simple to remove.
Just remember 1 thing, the M8 X 1.25 Bolt ONLY holds the socket to the peg... it's the NUT the removes the peg!!!

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I used a 2" socket with a m8x1.25 bolt with a washer and nut. That pulled it 90% off. then vise grips to Finnish it off

 

Roger that! That's for the input I will go pick up a bolt, I have the socket already.

 

Get a Corteco seal, the blue bag one is junk from my experience