C-123 rear main seal again

R Dahs · Feb 17, 2014

After reading past messages on this subject I still am not sold on the 2 piece felt seal for the rear main crank seal. I take it no one has come up with a better seal system.How about some tips on seal installation. Do I presoak the seals in oil? Do I maybe put some silicone on back and top side of seal to "stiffin " it up? A little extra time now will save alot of headaches later. I had someone tell me to cut a rubber seal, install and spin the cut edge to the top of seal holder. Can the groove on the crank be machined out? Let me know Thanks

gene bender · Feb 17, 2014

After i install the felt then i soak it havent had any problems they are quite a thing though.

teddy52food · Feb 17, 2014

Just put the felt in the way it is supposed to be. Been good for the last 60 years.

Dennis K (WA) · Feb 17, 2014

Sometimes the rear seal leak is not the felt but a warped pot metal retainer. I managed to find a good flat used one for one of my tractors. Maybe it could be machined flat again but have not tried it. Put the retainer up against something flat without a gasket and see if there is a gap between the bolt holes.
good luck
Dennis

C-123 rear main seal again

R Dahs

Member

gene bender

Well-known Member

teddy52food

Well-known Member

Dennis K (WA)

Member

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