It is probably silicone RTV holding it on. put a thin thing like a strong putty knife where arrow is in picture to break it loose then pull it off or put a couple of bolts in top then loosen bottom so fluid will drain. This video shows the job being done on a similar car but the process is the same.
Here is a guide to help you step by step with instructions in the diagrams below to show you how on your car.
Check out the diagrams (Below). Please let us know what happens.
Image (Click to make bigger)
Sunday, November 6th, 2016 AT 12:09 PM