Bleeding the Brakes in a Bentley Turbo R 1992 | Video Tutorial

The 1992 Turbo R features a distinct brake system devoid of a traditional master cylinder, instead relying on engine-driven brake pumps. This system, while highly effective, presents a unique set of challenges for brake bleeding, requiring a specialized approach. The video illustrates the configuration of the accumulator spheres and valve bodies, essential for regulating the hydraulic pressure within the system.

After bleeding the brakes, it's crucial to perform checks to ensure no air has been introduced into the system and that fluid levels are optimal. Regular maintenance, including fluid changes, is recommended to maintain the braking system's integrity and performance. The video provides detailed advice on these final steps to ensure your vehicle's braking system operates at its best.

A crucial aspect of preparing for brake bleeding on the Turbo R involves selecting the appropriate brake fluid. The switch from RR363 to hydraulic mineral oil is not just a matter of preference but a necessity to avoid damaging the system. Ensuring that the brake fluid reservoirs are correctly topped up before beginning the bleeding process is vital for a smooth and effective operation.

The video outlines a step-by-step procedure for bleeding the brakes, emphasizing the importance of keeping the system pressurized and the brake pedal correctly positioned. We discuss the nuances of working with the calipers and bleed screws, techniques designed to prevent air from entering the system, and ensuring a thorough purge of the old fluid. plus more!

Introduction to the Vehicle: Matt starts by introducing the 1992 Turbo R, emphasizing the aim to demonstrate the brake bleeding process.

Explanation of the Brake System: He explains that this model does not use a master cylinder but instead has two brake pumps driven by the engine, highlighting the system's uniqueness.

Preparation Steps:

- Ensures the correct type of fluid is used, distinguishing between RR363 brake fluid and hydraulic mineral oil, emphasizing compatibility.
- Advises on checking and topping up the fluid reservoirs before starting the bleeding process.

Bleeding Process:

- Describes holding the brake pedal down and running the engine to keep the system pressurized.
- Details the method of opening the bleed screw on the calipers to let the fluid flow and the importance of keeping the system filled to avoid introducing air.

Technical Insights on Brake Pumps and Valve Bodies:

- Outlines how the brake pumps, powered by the camshaft, feed fluid into the system.
- Discusses the role of valve bodies and accumulator spheres in regulating pressure and providing a reserve.

Maintenance Advice:

- Stresses the importance of using the correct fluid to avoid damaging the system.
- Offers tips on filling up the reservoirs, including using a special filling connection to ensure compatibility.

Jacking Up the Vehicle: Provides guidance on safely lifting the car to access the brakes, including choosing strong points for the jack and using wood to prevent slipping.

Wheel Removal:

- Shows how to remove the hubcap and wheel nuts, advising on the direction to turn the nuts based on the thread.
- Highlights the need for the correct key for the wheel locks.

Executing the Brake Bleed:

- Details attaching a spanner to the bleed screw and a hose to direct fluid into a container.
- Demonstrates running the engine and pressing the brake pedal to bleed the brakes through the caliper, observing the fluid and air exiting.

Final Checks and Top-Up:

- Instructs on checking fluid levels post-bleed and topping up as necessary.
- Advises on the proper procedure to close everything off and ensure no air is in the system.

Conclusion and Maintenance Reminder: Concludes with a reminder about the importance of regular fluid changes and system checks to maintain brake performance.

This guide, paired with our detailed video tutorial, offers a comprehensive overview of the brake bleeding process for the 1992 Turbo R. By following these expert techniques and insights, you can achieve professional-level maintenance, ensuring the longevity and performance of your vehicle's braking system.

We encourage viewers and readers to share their experiences and tips in the comments below the video or this blog post. For those looking for further advice or needing specific parts for their Rolls-Royce or Bentley vehicles, IntroCar stands ready to assist. Visit our website for a wide selection of parts and expert guidance tailored to your needs.