Convertible Pump problem

[Cam3512]

Hello. New to this forum. I just picked up a '69 Convertible. Put the top down today, and when I put it back up the hydrolic fluid on the left (driver's) side pissed fluid all over the car and floor. I can see the area that leaked, but can't pinpoint the cause. How do you get to the thing? How do you replace the fluid? And most importantly who would I take it to for the repair?

Cam in NJ