Oldsmobile Cutlass 442
Oldsmobile Cutlass Supreme
Fluid Dynamics

How do you check the hydraulic pressure for the convertible top of a 93 Cutlass Supreme and how do you increase the pressure or refill the fluid?

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Wiki User
2015-07-15 19:53:26

you will have to remove the rear seat as the pump is located

behind the backrest. To remove the back seat, you need an extension

for your socket wrench and remove the two nuts which are about

centered where each person sits. Then lift up the seat to clear

four guide/retaining clips.

Having done that, next lift the cloth well that is glued to the

top edge. Now you can see the pump/motor. it will have clear

hydraullic lines on both sides and a electrical connection. There

is a rubber plug on the side. Turn pump so this faces up. You will

need about 2' of rubber hose or a funnel and a coffee can 1/2 full

of trans fluid. Pull out the plug and insert hose from can to

pump.run top up and down a couple times. This will fill and bleed

the air out. You may need to do this 8-10 times. Don't let the

motor get hot--it's not made to go more than a couple times without

cooling off. Replace plug and inspect lines for leaks.

I have a 95 cutlass supreme, and the pump is visible and

accessible from the trunk. Just lift up the cloth bag that the top

folds into and you will see it. It is a long reach through the

trunk. My plug was on top of the unit, so I did not have to remove

the unit; just unplug and refill.

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