Here's the old and new seal. The new seal was quite different than the old one; rather than having a rubber inner lip with a retaining spring, it had what felt like paper with ridges on it. The part number on the seal was also different than what was on the packaging.


I used a 2X1.5" PVC pipe bushing and a 3/4" washer (the biggest I could find) with the crank bolt and one washer as an installation tool. I filed and sanded off the lettering at the bottom surface so it was smooth against the seal.


I put oil on the inside and outside edges of the seal and carefully pressed it into place using a 27mm socket and ratchet.


I used the depth gauge on a set of calipers to get it driven in exactly 3mm from flush on all sides. Only about another millimeter too far and the seal will touch the timing chain!


The seal installed 3mm deeper than flush.

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1967 W110 Universal Wagon, Euro, Turbo Diesel, Tail Fins, 4 Speed Manual Column Shift, A/C
1980 W116 300SD Turbo Diesel, DB479 Walnut Brown, Sunroof, Highly Optioned, 350,000+ Miles