Re: 1987 900 Turbo Conv. -Top Won't go down - Saabnet.com Bulletin Board
It's hydraulic. A few things can cause this. Some are; you could have low fluid in the reservoir, the hand brake switch could be wonky, or the eyes on the end of the rams could be broken.
The reservoir is under the rear seat base cushion on the passenger side. If you take the seat base off (I believe that the 87 has two bolts along the front edge that have to be removed) you can see the pump and reservoir. If you have a leak, you'll have to find out where it is and repair it and add fluid.
The hand break switch is a spring loaded brass contact switch. At this age, it's not unusual for the brass to get tarnished and make poor contact. To test if it is that switch, remove the ashtray at the rear of the floor console put your hand in there and jiggle the wire as you try to put the top down (handbrake engaged). If it goes down, then your switch needs to be cleaned. You'll have to pull the floor console to do that.
On the ends of the hydraulic driving rams that are connected to the top mechanism are eyes (rod ends) that are made of white metal. They break. If they are broken, the eye stays connected to the top, and the ram is not and it will just do it's own thing. If they are broken, you can get new better ones from McMaster Carr. They just screw on the end of the rams, and attach to the top mechanism with a pin. You access the ends of the rams with the top up. Just pull back the headliner flaps beside the rear seat. You'll see them. The link to the proper eyes is below.
posted by 169.226.161...
Convertible top hydraulic rod ends.
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