I've changed out the differential side seals that were leaking on my 124 with 111k miles. I've got the diff clamped up in the vise. I made a tool to grab the three cornered prop shaft flange. It's three feet long. I've drilled out the stake on the nut. (Thereby marking its place for the correct reinstall torque.) I've got a 30mm deep socket on the nut with a three foot arm on that tool. I'm pulling on all this hard. I cannot break this sucker loose. Should I use air tools on it? Thanks.
Thank you tuttebenne, "It's all good", The tools I used unsuccessfully were three and a half feet long with two people on 'em and it took an air tool on high setting four seconds to spin that nut off of there. Then, reassembly, I did it alone while just hanging onto the drive flange with just my hand. Sucked it down to exactly where it was before, using the original nut. I had drilled out the one stake and employed the remaining unused stake to lock it down. It's all good. Love your handle.
Thanks, Boyd Waugh. The car has 111k miles and is new to me. The pinion seal was original I think. It had the Mercedes logo on it. The wear width on the seal lip was an eighth of inch. The new one is a knife edge. I had the diff chucked up in a vise with good light on it. It was easy.
After removal these nuts are re fitted in a special way . If it was me i would send the unit off and get it done right .Your work can be all in vain if you squash the inner spacers in the final drive .
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