1951 Oldsmobile Super 88 Hydro-Lectric Convertible Top (Fisher Body Service News Vol 10 No 18)

This issue of Fisher Body Service News, Vol. 10 No. 18 (Oldsmobile Division No. 6, dated June 28, 1951), covers the new sealed-in Hydro-Lectric system used on 1951 Oldsmobile Super 88 convertibles in which only the folding top is hydraulically operated. Cars with hydraulic windows and seat kept the 1950-type system.

The bulletin explains the reversible 6-volt motor and spur gear pump assembly behind the right rear seat back, with exploded views of the reservoir, pump tubes and ball-and-spring valves; the self-centering push-pull top control switch; and the double-acting folding top lift cylinders. Step-by-step removal and installation procedures, raising, lowering and emergency manual operation are illustrated. Service sections give mechanical, electrical and hydraulic checking procedures using a light tester, a No. 8 jumper wire and a pressure gauge, with specifications of 220 to 260 psi pump pressure, 95 amps motor draw, 3.86 pints fluid capacity and Delco Super #11 hydraulic fluid. A wiring diagram closes the issue. Restorers and body mechanics use it to diagnose slow or inoperative tops.

This 12-page copy is free to read online. Use the page box and thumbnails beside the reader to move between pages.