Did GM publish a schematic diagram for the convertible top hydraulic system?
Also, was a service bulletin published concerning the top operations and adjustments?
I do have the service manual that has a section on the top adjustments.

Thanks,
Matt

Attached is a link to a 1951 Fisher Body Service News, No.15, Vol 10 document. The adjustments described should be similar for your 1950. Hopefully the link works.

http://www.oldcarmanualproject.com/...51FisherBodyServiceNo15V/Scan01_JPG.html

With regard to the hydraulic system schematic, I’m not aware of any, but can provide under hood pictures of the plumbing if that would help. Mike