help please ref putting cab door seals on

ok seals have arrived, we have early doors, how do we pop out the lower hinge to fit the seal pretty please ?

 

The door check strap? If there's a circlip on the pin prise it off with a screwdriver the push the pin out.

 

Will go double check but it loos like it has been welded in...

 

It has a head as such which I am trying to prize out ...

 

@zed , ok see what you mean I was looking on top .....thank you as always for your advice