Lattice Boom Truck Crane. 1969 American 55 ton lattice boom truck crane. Model # 5460 the lifting crane has 100 feet of boom. The upper motor is a Cummins with 512 hours and the lower drive motor is also a Cummins with 516 hours and 4’839 miles driven. It is set up with a 2 sheave block. Good working running older lattice boom truck crane.