The brake fluid reservoir is located above the master cylinder and supplies brake fluid for the entire brake system. The servo cylinder retains some of the vacuum supplied by the engine (the diesel engine has a special vacuum pump). The vacuum transmitted through the valve system helps increase the pressure exerted on the brake pedal.
The front and rear disc brakes are equipped with locking calipers. This means that when braking, the brake pad in each caliper is pressed against the brake disc by two pistons.
The handbrake acts on the rear wheels via a cable system. Since the disc brakes cannot be used as parking brakes, the rear wheels have additional drum brakes, which are part of the main disc brakes. The drum brakes are activated exclusively by the handbrake.
The type of brake pads is determined by the model of the car. We recommend using only those brake pads recommended by the manufacturer.
Material created based on the website [MERCEDESMAN]
Working with the brake system requires exceptional cleanliness and accuracy. If you do not have sufficient experience, it is better to entrust this work to a specialist.
Note: When driving through puddles, it is recommended to press the brake pedal from time to time to clean the brake discs from dirt.
Despite the fact that water "runs off" from the disks due to centrifugal forces, a thin film of grease and dirt still remains on them, reducing their efficiency. When installing new brake pads, you need to give them time to work in and try to avoid pressing the brake pedal hard during the first 200 km.
Caution: When measuring the brake pedal free play (especially after turning) the runout of the discs should be checked by the outer diameter. At the same time, it is recommended to check and adjust the axial clearance of the hub bearings. If the runout of the brake discs is too significant, the hubs should be adjusted. If the runout is not eliminated, the discs must be replaced.