Caterpillar Cat 277B WORKSHOP SERVICE REPAIR MANUAL This is the exact same manual used by technicians at the dealership to maintain, service, diagnose and repair your Caterpillar 277B. Complete step-by-step instructions, diagrams, illustrations, wiring schematics, and specifications to completely repair your Caterpillar 277b Track Loader with ease! Parts & Service Manuals - cat Caterpillar offers parts manuals, operation & maintenance manuals and service manuals. Parts Manuals contain detailed exploded views and part numbers of all serviced parts for Cat ® products. These manuals give the information needed to quickly identify and order genuine Cat parts to keep your machine running at peak performance.