Used Jaguar Brake Servo Units

All used Jaguar 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 Jaguar 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 Jaguar 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 Jaguar brake servo unit can be that the pedal becomes heavy and requires increased force to operate the brakes. 

Jaguar trivia

• Steve McQueen was a huge fan of the Jaguar XKSS and even found himself with two driving bans because of his passion for driving fast. He was one of the few people to ever drive an XKSS because only 16 were ever made! McQueen did eventually sell his car, but regretted it immediately and paid more to get it back. The car is now owned by US TV host Jay Leno.
• PM Margaret Thatcher was determined to keep Jaguar as a British company, and in 1984 she announced that the brand was protected from foreign purchasing. The government retained a 50% share of the company until it became clear that foreign investment was essential as 1990 rolled around.
• Jaguar was bought out by Ford in 1990, but they didn't really capitalise on the investment. Eventually, Ford sold Jaguar to the current owners, the Indian company Tata Motors.
• When they first launched in 1922, Jaguar was called the Swallow Sidecar Company. They changed the name in 1945 because of the unfortunate use of the letters 'SS' by Germany in the war.
• The 2014 Superbowl advert for Jaguar featured Brit actors Ben Kingsley and Mark Strong, with a terrified Tom Hiddlestone hanging out of a helicopter as it flew across London. Not many people know that the driver used for this advert was The Stig (Ben Collins).