Thanks for the response guys, I used a universal joint with a socket taped to it , and various extensions to get at the 2 rear bolts. Definitely challenging to get at
but nothing compared to the time I've wasted trying to remove the center fan bolt . I think a previous mechanic ( and I use that term very loosely ) welded the thing in place . It's still in there , but I won't be defeated . BTW , the pump was dripping at the weep hole as well as around the O-ring .