Washer Tank Leak
 

I have a 09 X5 and the windshield washer tank started to leak. I removed the inner fender and can see the tank but can not see what it takes to remove the tank. Anyone got this far before without taking off the outer fender? The dealer wants $400 for putting in a new pump but I think that a little silicone would go a long way. Any help would be great! Thanks