i have an 89 sj62 inner axle seal gone 3 times, the shaft looks fine, I cant figure out why its leaking. Any ideas? I moved it 20feet and it went again after I had just replaced it. The seal looks like it is perfect.
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Times 1000 on the Marlin seals. The stockers were leak-o-matics on my rig, the Marlins don't leak at all. One thing to watch is the the axle shaft's position in the seal itself. I do not use a clip inside the Birfield, I put a small tack weld on the inner splines of the shaft which prevent it from going into the diff too far. I determined the depth by two things; the witness marks on the shaft made by the contect from the side gears, and the shoulder of the sealing area where it goes into the inner axle seal. I made sure it stopped just short of the shoulder passing into the seal and creating the mother of all leaks.