Where are the air-cleaners located????????????

Hey Bones don't panic just yet bro!!

Check out my first post on the GAA engine. At the end of it I address this vary question.  
There are no absolutes of course and exceptions can always be found, but the rule of thumb is this;

Dry ammo Stowage = Air Cleaners in the fighting Compartment



Wet ammo Stowage = Air Cleaners in the Engine Compartment  (JUMBO is Wet Ammo Stowage)  


Hope this helps out!!  

But I totally agree with you bones on the lack of good reference on the guts of these Shermans. I'm hoping that works like the 'Son of Sherman' will kick start a drive to correct this over sight.