ralphnof49 Posted November 21, 2009 Share Posted November 21, 2009 I have replaced the rear seal on the overdrive without removing the transmission from the car. Now I need to put everything back together when the gaskets arrive. My question now is what grease should be used- the service manual says "cylinder oil soda soap grease". I can find reference to the various compositions of grease on the internet, but it doesn't help with the specific product to use and the U joint needs to have grease that will flow into the bearings readily. What should be used? Link to comment Share on other sites More sharing options...
peecher Posted November 21, 2009 Share Posted November 21, 2009 The cylinder oil soda soap grease was a "duke's mixture" that had a fairly low drop point and would "melt". This would prevent "tunneling" of the lubricant as the u-joint spun. You can use the lowest drop point chassis lube available ( usually the cheapest) or a mixture of chassis grease and gear oil.Glad to hear you were able to change that seal without removing the transmission. Link to comment Share on other sites More sharing options...
ralphnof49 Posted November 21, 2009 Author Share Posted November 21, 2009 Thanks for your help Peecher. Link to comment Share on other sites More sharing options...
CBoz Posted November 22, 2009 Share Posted November 22, 2009 Here's some info from Dick Spadoro, via the Fordbarn. Pretty useul:Re: 1939 Ford transmissionIn fact, I just got done putting the 600 wt oil into my u-joint assembly. I had the tranny cover off, so I could see how it created an "oil bath" for the speedo cable and driveshaft roller bearing as well. And so far, no leaks (the stuff is like molasses and the cork/felt seal at the back of the u-joint cover may be enough to hold it in). Link to comment Share on other sites More sharing options...
ralphnof49 Posted November 24, 2009 Author Share Posted November 24, 2009 Thanks CBoz, I have never seen 600 wt oil. I will have to look around for heavier oil than regular gear oil. Link to comment Share on other sites More sharing options...
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