Perhaps I'm just tired, but I cannot get to the bottom nut. The last thing to do is get that last nut off so I can remove the pump. What am I missing? I searched the threads and came up empty, so I'm doing something wrong. Just one more nut before the temp. drops! Please help. Thanks.

 

find your self a s wrench or just get an older wrench and heat it and bend it, may take a few times of heating and bending but it will work...

 

There is a pic of what you need to make, or acquire if you are not the making type, on Dave's excellent site.

http://www.daveschenker.com/Site/the%20truck.html

 

Heres a wrench that I custom made 15 years ago. Started with a craftman boxed end, combo 15 x 13mm. If you hit the paws button at the right time you can check it out. The curvature thats ground in the handle is necessary to clear the vac pump and it also helps up against the head if your working on the top nut.

Patten patent pending of course LOL

 

Snap-On makes a wrench to do the job.

Harbor Freight used to sell a $10 set of "S" wrenches that worked slick, but they discontinued them about a year ago.

 

I cut off a regular box end wrench with a sawzall and it worked pretty good,but was still really tight