Thanks to all who provided input on bringing my top lifting mechanism back to life. I spent most of the week trying to get it to work right. Couldn't work on it while the grandchildren were here (language you know). But it works good now. I believe the problem was largely the fact that the hydraulic oil had deteriorated after 57 years and turned to sludge. I cleaned the motor and pump as I reported earlier. Then I removed the cylinders and purged the sludge and flushed them with kerosene. Then I refilled them with type A fluid. I had a lot of trouble getting the air out of the system. This may have been part of the problem right after I cleaned the motor and pump, I am not sure. In any case I removed the pins that fastened the rod end of the cylinder to the top mechanism and tipped the motor on end so the reservoir always had oil. I removed the fill plug and cycled the cylinders from full extended to full retracted about a dozen times. You could hear the are escaping into the reservoir each time. I kept refilling the reservoir after each cycle. I must have added a pint of fluid during the air purging process. The whole system seems to work quite will now. By the way type A cleans up off the carpet quite nicely. Now if the odor of Type A fluid will just go away. Thanks again for all the help. You guys are great. Rolland Westra Rockford, IL [Non-text portions of this message have been removed] ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: mailto:Chrysler300-digest@xxxxxxxxxxxxxxx mailto:Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/