Thread: rear main seal
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Old 12-03-2010, 11:20 PM   #2
Geo.T
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Join Date: May 2010
Posts: 36
Default Re: rear main seal

If it is the same as the ones that I have used, it comes in two pieces (upper and lower) and has a "lug" or "ear" on each side at the split to prevent it turning. It is necessary to cut (file) a space in the bearing (cap?) to accommodate this "lug". Mine also came from Rosemead. I installed the first one in about 1970 and replaced it with a new one when I rebuilt my engine in 2005. I never had any problems with my rear main leaking but always kept the bearing clearances near spec. I would probably try to obtain a spare rubber seal before cutting the bearing for the lugs if I was going to use it for the first time. By the way the old one was still in good condition when I removed it in 2005. Just my experience.
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