[Vwdiesel] How to loosen the bottom injection pump bolt?

[fudny at aol.com]

 The engine is a 1.6 NA diesel from a 84 caddy.


 I just don't seem to be able to get anything on the bottom mounting bolt of my Bosch injection pump.

I removed the small bracket supporting the alternator bracket and timing belt cover, tried every 13mm I have, swivel 13mm and the 90 degree 13mm tool to no avail. 

Any tricks I should try? I don't want to remove the alternator and mount if I don't have to.

Thanks - Terry