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Just finishing the restoration of my differential. Started to install the pinion seal, and found that there is no way on earth it will fit. I bought it from TRF. The car is a solid-axle TR4A.
The seal's OD is 2.690 inches, and the opening at the front of the differential, where it has to fit, is 2.620. The old, original seal that I removed was 2.625 OD, which makes sense. I can't see any way this new one will go in, but maybe there is. If so, could someone enlighten me? What have you guys used?
I did a little research, and found that the seal no. 470487N is the one listed everywhere for the TR4, and I also found the dimensions in a Timken catalog (below). The TRF seal has those dimensions. It appears that the 451857 should fit; it's nitrile instead of polyacrylate, and there are small differences in the style of the seal. I don't think those differences are significant, so lacking any other suggestions, I think I'll get one of those.
The seal's OD is 2.690 inches, and the opening at the front of the differential, where it has to fit, is 2.620. The old, original seal that I removed was 2.625 OD, which makes sense. I can't see any way this new one will go in, but maybe there is. If so, could someone enlighten me? What have you guys used?
I did a little research, and found that the seal no. 470487N is the one listed everywhere for the TR4, and I also found the dimensions in a Timken catalog (below). The TRF seal has those dimensions. It appears that the 451857 should fit; it's nitrile instead of polyacrylate, and there are small differences in the style of the seal. I don't think those differences are significant, so lacking any other suggestions, I think I'll get one of those.