onebigmob

OK, I believe it works like this: The yellow switch is to choose either PTO or pneumatics. The two red switches are used to divert the powersource chosen with the yellow switch either to the front or to the back of the vechicle. If this is the case (this theory depends on the colour of the two "red" switches, and I am colourblind..., but the same colour should imply the same kind of function, and red was used in 8043 in kind of the same way, to choose between sets of functions), the next step should be to convert the gearbox so the red switch chooses either to drive only the PTO or both the PTO and the compressor (like in 8421 where you either control the string, or both the string and the length of the boom at the same time). If we don't want power to either PTO, we just put the red switch in neutral... If we fit a security valve somewhere in the pneumatic system, the motor can drive the compressor continuosly, and the red switch decides whether or not to use the PTO. While we're at converting the gearbox, I would like the direction of the PTO's to be maneuvered by the gearbox, and not by that awful, stiff switch on the battery box, which is impossible to put in neutral in a smooth way. At least, the first thing I will do is putting one of the PF switches between the battery box and the motor. Besides all this, I really like that all the switches are put in the open, not hidden behind some panels, like in some of the recent flagships (8258, 8285), and that all switches are placed at the same side of the vehicle. It makes it so much easier to control. Well, just my thoughts.

Why do you think there are two mechanical PTO's at the rear? Some clue in one of the pics I missed? This piece of equipment will look great on one of the Lego shelves in my son's bedroom, beside my first Unimog from before the dark ages, #8848 from 1981!