Done this job recently on my 1972 4/4
Root cause was a blocked breather hole in the axle tube causing the axle to pressurise and force the oil past the seal.
Couple of tips:
i) check the axle breather hole isn't blocked - mine was! blocked by paint and hardened grease/oil/dirt. I had to drill it clear with a 3 mm drill!
ii) Better if you can get the wire wheel hubs off (if you have them) before you take the half shafts out as you still need to get the seal holders off once the shafts are out.
Use a fairly good quality three leg puller on the hub once you have slackened off the centre nut, Use a piece of soft metal eg brass or alloy between the screw on the puller and the end of the half shaft.
If it fails to shift it, don't increase the leverage on what ever you are using to tighten the nut on the puller as all you will do is bend the screw on the puller and/or bell out the end of the half shaft
Instead, tighten up the puller as much as you can and then leave it overnight. When you return to the job in the morning, 9 times out of 10, the hub will be loose. Don't know why it should but it does! The only time it failed, I have the puller a fairly heavy clout with a copper hammer and the hub flew off the half shaft.
iii) The inner seal (marked 3HA 027 -3 from memory) - its more of a baffle than a seal I think. I had to buy a pair recently for the Plus 4 and they are a bit tricky to find and expensive when you do. SNG Barrett stock them as they are used on a Jaguar.
iv) The outer seal/hub seal is readily available from any half decent bearing suppliers. I don't have the GACO number to hand. I got enough seals for two axles from Wych Bearings for less than £10
v) Your brake shoes will need to be replace so budget for this. There are all sorts of potions claimed to remove oil from friction material but I don't trust them and anyway, new rear brake shoes are cheap!!
Hope this helps
Arwyn
