Bryce was a British manufacturer of diesel fuel-injection equipment, active in an era when Britain was a world centre of diesel engineering. The company's injection pumps and injectors were fitted to industrial, agricultural and marine engines, and Bryce equipment is still encountered today in older machinery, stationary engines, tractors and commercial vehicles. Although the company itself has long since closed, its equipment survives in large numbers, and each pump that is correctly rebuilt extends the working life of the engine it serves.

Bryce is remembered for sound, workmanlike injection equipment designed for long, hard service. Because the company's products date from a period when diesel engines were built to last for decades, surviving examples are often found in classic tractors, boats, generating sets and industrial plant. In these engines the injection pump is the heart of the fuel system and the component most likely to need expert attention, which makes accurate service data essential.

Bryce service manuals document the construction and overhaul of its pumps and injectors: internal components and their wear limits, timing and calibration data, test-bench settings and fitting procedures, and the fuel-system service routines required by the engines they feed. They include exploded diagrams, specification tables, torque data and troubleshooting guidance for starting difficulties, power loss and uneven running.

These manuals are valuable to diesel-injection specialists, restorers of vintage tractors, trucks and commercial vehicles, and marine and industrial engineers who maintain older Bryce-equipped engines and need the original factory data.