The Bell B25D 6x6 ADT and B30D 6x6 ADT represent robust articulated dump trucks designed for demanding construction and mining applications. Bell Equipment, known for its pioneering role in ADT technology since its founding in 1984, engineered these 'D' series models with a focus on strong construction, efficient power-to-weight ratios, and reliable drivetrains, ensuring operator comfort and performance in challenging environments. These trucks, produced roughly from the late 2000s through the mid-2010s, are powered by Cummins engines and feature Allison automatic transmissions, embodying the brand's commitment to durability and innovation in heavy machinery.

This comprehensive parts manual serves as an essential resource for identifying, sourcing, and ordering replacement components for the Bell B25D and B30D articulated dump trucks. It covers all major systems, including the powertrain, chassis, braking, hydraulics, electrical systems, and the operator station and body. Detailed exploded views, part numbers, and assembly/disassembly guidance are provided to facilitate accurate part identification and minimize downtime. The manual is designed for use by Bell Equipment dealerships, authorized service centers, fleet maintenance managers, and heavy equipment mechanics, ensuring the continued integrity and operational efficiency of these powerful machines.