The bulldog style diesel engines have a front door...

[NscaleNut]

What's inside that door?

And why can't I post pics?

[NscaleNut]

...no one knows what that door is for?

[the Bach-man]

Dear Nut,
The door allows crew pass-through between units.
On the EL, the door was often opened in hot weather for ventilation.
Have fun!
the Bach-man

[NscaleNut]

 
Thanks!!

I suspected that but was unsure.  Heard a rumor that there was a toilet to one side or another and electrical compartment across from that.  Any truth to that?