[snipescastle2]

The diverter you pictured controls the air flow to the defroster vents/floor.the other diverter that controls the air flow to the center and outer vents is up stream from the one pictured, and the cable that actuates it, attaches from behind it, so it's out of view.chances are, the flapper in that diverter has either a broken arm that the cable attaches too, or the flapper itself has broken.
With regards to the vacuum hose issue, there is a vacuum fitting on the back of the intake ( at least on a stock intake) that is close to the distributor, the vacuum hose then goes to your vacuum cannister /reservoir,which, from the pictures you have posted, is missing,you can get by without it, but the doors will be sluggish to open or close, because the vacuum reservoir stores vacuum to aid in opening these actuators. the hose then routes through the firewall to the defrost control panel, then it tee's off to the vacuum actuators on both the cowl vent door, and the recirc door below the glove box and the water control valve on the heater hoses.
Hth,
Ben