Tomica world 7524 question

Yes exactly. Had a used one I had to fix before, but since it's a simple turn mech (that is, the rollers only controlled essentially the turning mech) that was less daunting to open up. But with this, the rollers control likely other gears that control the other vehicles and the person arm.  So since it'll be my first time opening it ( like any other toys first opening without prior knowledge) I gotta take my time so something doesn't spring out or fall out of position BEFORE I know what original position these gears and springs belong in. But I'm definitely going to tackle this cause I can't leave it like this...I just hope I have spare gears for it right away. Again I'll take pictures and all the good stuff.