Power master to vac brake question

[MikeL.]

Power master has been removed, brake pedal, and am in the process of removing the firewall pm adapter so i can install the vac booster and mc.

4 15mm nuts are to be removed before removing adapter. All four are out but it feels like there is a hidden/blind nut on the bottom left as looking from the interior as this adapter will not budge. Anyone run into this?

 

[NY_GN]

Don't know if you got it fixed or not, but my adapter plate had a strong adhesive on it, so I found a seam a just pryed it off. It was on there pretty good.

 

[NorEaster]

Just had the same issue, there is a push nut, small and grey used for assembly. Pain to get off. Just pry the tabs off of the bolt and she will pop right out.