There are new belts for this unit and the tool to install them.

Mack 6 Cylinder 10.8 L Diesel 370 hp Engine, 2007 US EPA Label, 14594 Engine hrs, Air Conditioner, Cruise Control, Power Windows, Engine Brake, Allison Automatic Transmission, Differential Lock, 9100 kg Front Axle, 20800 kg Rears, 29900 kg GVWR, Air Ride Cab, Aluminum Wheels, 425/65R22.5 Front Tires, 11R22.5 Rear Tires, Air Lift Pusher Axle, Dual Steering Boxes, Hendrickson Rubber over Walking Beam Suspension, 296 in Wheelbase, PTO, 16000 lb Capacity, Rear Mounted, 25 ft - 80 ft 4 Section Boom, 1 Sheave Hook Block, 170 lb Overhaul Ball 7 ton Capacity, Anti-Two Block, Elliott Load Moment Indicator, Dual Controls, Out and Down Outriggers, Rear Outriggers, 22 ft 6 in x 105.5 in Bed