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hi there guys i have a 1936 Packard senior eight and the pinion seal is leaking again,i purchased a seal from Max Merritt i fitted the seal and after a mile it chewed it up,i have realised my mistake i think i should have removed the washer/dirt deflector bit first which is on the flange,my question is does any one know the sizes of the pinion seal or a part number etc,so i can go to my local bearing supplier and purchase one,i have fitted an old seal from another axle which is leaking,however i forgot to measure it oops!!!
any help always apprciated Dave

I don't have a parts book for senior models of those years but if I am looking at the correct item on Max's site he lists the factory number as 186083.

There was a factory to seal# interchange list compiled at some time in history that is available on a Stude website.studebaker-info.org/Cb/MetalSealXch.txt That interchange lists the seal as a Victor 49035, C/R 18785 or a National 450084. Plugging those numbers into the SKF interchange websitewww2.chicago-rawhide.com/popup_parts_lookup_457012.htm they come up as modern numbers 18817 or 18785.

skfextranet.com/Catalogs/457010/sealdetail.asp?s=18817
skfextranet.com/Catalogs/457010/sealdetail.asp?s=18785

You might compare those dimensions to your seal and see if it looks like the correct item. If that was the wrong seal I have provided the links to the Stude list and SKF site so you can use the proper factory number and do a new search.

One thing I have found with the modern seal conversions is there may be one or two dimensions slightly different. In most cases it doesn't seem to matter but on some seals it might. The depth seems to be the dimension with the greatest discrepancy. An example I ran across was the modern cross for a front spindle seal was much deeper than the factory item and would not entirely fit inside the recess in the hub. If the seal had been thinner than the factory item it would have worked well.

many thanks for taking time to look in to this for me the number doesn't seem be right 186083 the seal dimensions seems wrong i will o/d 78mm bore 46mm depth 14mm i managed to get the dimensions of the seal i found an old one this is what i measured cheers Dave