. On Manitex Boom Trucks. When do the bearing pads have to be fastened to the outriggers? 2. At what position on the quadrants of operation is the most pressure on the outrigger? On the side, on the back, on the front or the corner? The crane and its center of rotation are mounted between the main outriggers. So are the main outriggers considered sides or corners on the NCCCO certification test. 3. What is the lowest boom angle you can go down to with a 40’ extension, hose real mounted and a ball. No load, no rigging? What study material (Book) do you recommend for the NCCCO Recertification test for Manitex Boom Truck,Telescoping boom crane,fixed cab.