This comprehensive Bentley 3.5 & 4.25 Derby Repair Service Manual provides detailed instructions for maintaining and servicing your vehicle. It includes step-by-step procedures, illustrations, exploded diagrams, charts, and manufacturers' specifications. The manual is organized into chapters covering a wide range of topics, ensuring you have the information you need to address various maintenance and repair tasks.

Chapter A covers general information, providing an overview of the vehicle and its systems. Chapter B outlines specifications and details special tool kits required for various procedures. Chapter C details maintenance requirements, ensuring you can keep your Derby in top condition. Chapter D covers lubrication, providing guidance on using the correct fluids and lubricants.

The manual delves into the engine in Chapter E, outlining procedures for its maintenance and repair. Chapter F focuses on the clutch, while Chapter G addresses the gearbox. Chapter J covers the brakes, providing comprehensive guidance on maintenance and repair.

Chapter K details the rear axle and drive-shafts, outlining the procedures for inspecting and servicing these components. Chapter L covers the front axle (rigid), providing detailed instructions on maintenance and repair. Chapter N focuses on the steering system, outlining procedures for inspection, adjustment, and repair.

Chapter O details springs and shock dampers, providing guidance on assessing and replacing these critical components. Chapter Q covers electrical and ignition systems, outlining troubleshooting and repair procedures. Chapter R focuses on the radiator and cooling system, ensuring you can maintain optimal engine temperature. Chapter V concludes the manual with coverage of hubs, outlining maintenance and repair procedures for these critical components.

Whether you're performing routine maintenance or tackling more complex repairs, this manual is an invaluable resource for owners and enthusiasts of the Bentley 3.5 & 4.25 Derby.

The Bentley Derby, a symbol of luxury and performance, was a pivotal model in the brand's history, marking a departure from the traditional coachbuilding practices that characterized its early years. Introduced in 1927, the Derby was Bentley's first internally designed and built chassis. It featured a robust and refined design, incorporating a powerful 3.5-liter six-cylinder engine and a rigid ladder frame chassis. The Derby's sturdy construction and performance capabilities established it as a formidable competitor in the burgeoning world of sports car racing, achieving notable success on both the track and the road.

The Bentley Derby's legacy extended beyond its initial 3.5-liter iteration, evolving into the iconic 4.25-liter variant in 1928. This larger engine, paired with enhancements to the suspension and braking systems, significantly boosted the Derby's performance capabilities. It was during this period that the Derby solidified its place as a true sporting machine, capturing the hearts of enthusiasts with its elegant design, exhilarating performance, and enduring reliability. The Bentley Derby's impact on the automotive landscape is undeniable, laying the foundation for future Bentley models and contributing significantly to the brand's enduring reputation for luxury, performance, and craftsmanship. The Derby's legacy continues to inspire and captivate car enthusiasts around the world, serving as a testament to Bentley's pioneering spirit and unwavering dedication to engineering excellence.