Oil & Fuel Rear remote leak on 7320.

[WoodChuckDad]

At the very top of the rear hydraulic remote stack, there is a cap with two bolts. It has been lightly seeping for a couple months. My wife was moving some firewood today and I noticed it is leaking a lot more. I had sprayed down the back of the tractor several hours earlier to remove a large amount of clumped grass from cutting fields. I just wiped off the cap before this picture, I think it is leaking around the bolts. Is there a replaceableView attachment IMG_3325.jpg
seal inside this cap?