i have heard of people drilling and tapping holes in the outer seals for a zirt fitting.. the ones i got from superior axles.. had the fittings in them.. but they are to big for the stock 2 piece shafts..
yes i believe the 86 d44 rear was lubed by the diff fluid. but on the 20's it should be grease.. well the zirt fitting was.. mmm..on that outer seal..guess you would have to take it out and kinda eyeball it... its like in the corner from the flat part that bolts on to the rise to where the actual seal is at. and on those superiors.. the end of the axle.. round part with the lug bolts.. there is like a 1/2" hole drilled.. so all you have to do is take the tire off and grease them.. when the tire is on.. you see about half the hole..
i gave the axle to a friend of mine.. i might be able to get a picture in a few days. . email me if you are interested...
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