Used Mercedes-Benz Brake Servo Units

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

Mercedes-Benz trivia

• Karl Benz founded the famous car company. He is not only credited as the maker of the world's first practical motorcar but also has the distinction of being the first person ever issued with a driving license (local citizens kept complaining about the noise and smell of his Motorwagen, and so he needed written permission to drive it).
• The longest sedan vehicle available in today's car market is the S-Class Pullman, at a mind-boggling 6.5 metres long. Bear in mind that the average length of a sedan is only 4.7 metres!
• Mercedes are responsible for a lot of 'firsts' in their long history, including the world's first production of a diesel car. Very impressive, but it only had three wheels. Production stopped pretty quickly in the late 1950s.
• We all recognise that distinctive Mercedes logo, but did you know that the three points of the star represent air, land, and water? There was a point where they considered adding another point to represent space, but they decided against it in the end.
• Karl Benz might have patented the design of his Motorwagen in 1886, but it was his wife who jumped behind the wheel first for a quick (as quick a 0.9hp will deliver) 120-mile tour through the countryside of Germany. Poor Karl didn't even know!