If this is a 1010 I will by the brake backing plates and associated hardware. I have a 73 with the lockheed 11x3 brakes. What a pia. No parts available for this system. The 1010 has the bendix system on most front drum systems.
What do you have in relation to a tailgate regulator. I think mine is off a 1973 Travelall I parted out. Have picture if you need that I can fax it to you.
I think the gear that is run by the worm gear in the motor is bad.