Hi Pete
Sounds like to me that you need more fluid in the reservoir and to bleed the air out.
Easiest way is to remove back seat. I always lift the pump/reservoir off the mounting pad and turn it on its side with the fill plug on the top. Run the convertible top up and down a few times adding fluid as needed. You should notice the top going faster each time.
You'll have to intermittently close the fill plug to keep fluid from spilling out. Put a LARGE towel under the unit. You'll get the hang of it quickly.
Note: Be cautious when lifting the motor unit off the mount. It has four rubber "feet". I always spray them liberally with WD-40 and let them soak a while. Then I use a large screwdriver or pry bar to GENTLY pull up on each foot seperately.
You CAN do the process without removing the motor unit but I find it is easier and less messy this way.
As I said, this is how I do it. Other members will probably have different methods.
Jeff Miklas
On May 29, 2018 at 10:55 AM "pffkllc@xxxxxxx [Chrysler300]" <Chrysler300-noreply@xxxxxxxxxxxxxxx> wrote:
Hi Group:The saga of Anne's K continues. The top on her K goes down fast enough, but the return when raising it takes forever.I don't know whether it is the pump motor, the cylinders or what but, considering the fact that the car is 54 years old, I amwilling to replace the entire assembly, motor, cylinders lines, etc.The question is whether any of you have done this and, if so, how accessible is the equipment. Is it accessed throughthe rear seat or through the trunk? Additionally, is this a matter of hydraulics being hydraulics or is there somethingspecific with convertible tops? I ask because I have found a shop that does nothing but hydraulics, but I'm not sure they have everdone a convertible top. Your advice will be greatly appreciated.Thanks,Pete Fitch