code: UG3528
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Cover for Brake Servo
  • Rolls-Royce Silver Dawn, Silver Wraith, Silver Cloud I, II & III
  • Bentley MK VI, R-Type, S1, S2 & S3

This servo cover is from the brakes section in the Rolls-Royce & Bentley parts catalogues for models built between 1946 to 1955.

The brake servo, or vacuum booster, is a small canister used to increase braking pressure to take the strain off the driver's foot. If a brake servo becomes damaged or worn it should be replaced. Using the vacuum produced by your car's engine, or special vacuum pumps, the brake servo boosts the natural force sent to the master cylinder when you apply pressure to the brake pedal. This action is commonly known as power braking. It sits between the master cylinder and the pedal linkage, connecting the two by means of a rod that is attached to the master cylinder's piston.

A valve and diaphragm system operates the brake servo, with the vacuum on either side of the diaphragm acting as the driving force that provides the extra braking assistance. Brake servos have become commonplace with the move from the drum brake to the disc brake system (at least for the front-axle wheels); while drum brakes produce extra power by design, disc brakes require assistance with this and so use brake servos to increase braking pressure.

All our parts branded Prestige Parts have a 3 year warranty.

Return postage must be paid by the customer and proof of delivery retained. IntroCar Ltd cannot be held responsible for the non-delivery of items being returned to the Company. When returning items wrongly supplied or under warranty, postage will be refunded up to a reasonable level (maximum return postage is limited up to the value of a return collection). If in doubt please contact us to confirm if return collection can be arranged.

Please refer to our Conditions of Sale for full details of return and exchange policy.

Please note that Special Order items will not be accepted as returns. These are items which have been ordered to specification, or those ordered from Bentley Motors Limited or Roll-Royce Motorcars Limited. Please contact us if in any doubt as to whether your item is viable for return.

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Bentley Graphic Founded in 1989