Whilst I will normally bow down to Joes extensive knowledge ( especially regarding W113's) the situation regarding CV joints on the W107 (etc etc ) is one where split joint rubbers are NOT available and will not work on a high speed spinning axle. BUT there is an answer because dismantling those joints can only be described as bastard of a job which requires special tools .
You can get both axles rebooted (?) by anyone who has a Astoria Flex boot gun. It takes around 20-30 minutes to do each side and the boots cost under $20 each.
http://www.thetoolwarehouse.net/shop/ARA-FB5000PK.html

Using as Asotia gun there is no need to remove the axles,just undo the 13 mm bolt in the center of each rear hub and push the 1/2 shaft free. replace the boots and refit the axles and your done.