Mikeiaz Posted December 29, 2018 Share Posted December 29, 2018 Where can I access the hydraulic top motor on this car? Wanted to ask before I just start removing panels : ) THX Link to comment Share on other sites More sharing options...
Guest Posted December 30, 2018 Share Posted December 30, 2018 1940 Buick Super converts dont have a "top motor". The top moves up or down with vacuum provided by the engine, if its in original configuration. Two large cylinders(approx 5-6" in diameter) contain a "disc" with a seal around the perimeter. When the control valve connects the engine vacuum to the cylinders on both sides the vacuum moves the disc up or down depending on pulling or pushing the knob on the spring back to neutral valve. Kiss principle. No fluid, no messy leaks. Link to comment Share on other sites More sharing options...
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