Used Citroen Brake Servo Units

All used Citroen Brake Servo Units listed on Breakeryard.com are tested, original (OEM) manufacturer parts and come with a 14 day money back guarantee. Breakeryard.com list cheap new OES or aftermarket car parts at discounted prices and used OEM car parts up to 80% cheaper than main dealer prices for Citroen from premium breaker yards from across the UK.

About Brake Servo Units

The brake servo unit, if fitted, is an aid to the hydraulic braking system. With the operation of the servo unit less force is required on the brake pedal.

The servo unit is situated in the braking system and has a connecting rod that runs between the brake pedal, the master cylinder and fluid reservoir and is commonly found in the engine compartment.

The Citroen brake servo unit is a bulbous cylinder which contains a central diaphragm. On each side of the diaphragm there are two separate chambers The cylinder has a vacuum feed from the engine manifold this maintains a vacuum in both chambers. When the brake pedal is pressed an influx of external air is sucked into one side of the diaphragm, the air pressure rises as the vacuum is broken which pushes the diaphragm to assist the movement of the master cylinder which forces the hydraulic fluid through the piping to the slave cylinders on the brakes of each wheel. When the footbrake is released the vacuum is restored to the chamber.

Signs that there's a problem with the Citroen brake servo unit can be that the pedal becomes heavy and requires increased force to operate the brakes. 

Citroen trivia

• John Lennon appeared in an advert for the Citroën DS3, many years after his death. The advert caused quite a lot of public criticism for Yoko Ono, who agreed to the musician's likeness being used.
• Buying Maserati was definitely a mistake for Citroën. The SM model didn't sell well, and that led to financial difficulties that meant the car company was eventually acquired by Peugeot.
• Thanks to Citroën, the French driver Sebastien Loeb is the single most successful driver in the entire history of the World Rallying Championship. Nine consecutive driver's titles were won by Loeb in the time between 2004 and 2012, driving cars such as the Xsara, the C4, and the DS3.
• If you went into a Citroën showroom in the 20s, there's a good chance that you would have been given a letter that was personally handwritten by Andre Citroën himself, proclaiming the benefits of the car models. This one act of marketing genius is credited with being responsible for thousands of closed sales.
• In 1968, Citroën bought control of the Italian car firm Maserati. That purchase led to the design of the Citroën GT, which came with hydro-pneumatic suspension and a V6 engine. It did well in terms of sales, but production of the last version, the DS23 Pallas Electronique, was stopped in 1975 after the '73 oil crisis.