Find up-to-date offers for other spare parts for Brakes
Brake discs
Brake pads
Brake caliper
Drum brake
ABS sensor
Brake caliper repair kit
Handbrake
Brake disc back plate
Brake fluid
Brake pad wear sensor
Brake shoes
Brake master cylinder
Brake hose
Brake caliper carrier
Brake drum
Handbrake cable
Brake vacuum pump
Brake caliper bolt
Handbrake shoes
Brake pad fitting kit
Wheel cylinder
Brake set, drum brakes
Brake shoe fitting kit
Brake discs and pads
Brake light switch
Brake shoe adjuster
Reluctor ring
Brake power regulator
Brake caliper piston
Brake pipe
Replace a Spare part Brake servo – a defective one or if the limit of use has been already reached. Find out useful information about Brake servo
Faults of brake servo
system leakage;
faulty hoses and connections;
mechanical damage to the body;
displacement or damage to the diaphragm;
damage or displacement of rubber seals;
failure of valves;
wedging of components.
Symptoms of brake servo faults
pull to one side when braking;
too high position of the brake pedal in normal mode;
different stiffness of the brake pedal when driving and during stops;
appearance of strange sounds in the brake system when braking;
low effectiveness of the brakes;
vibrations or beating in the brake pedal while pushing.
Causes of faulty brake servo
increase in the play between the elements of the part;
looseness of connections;
use of low-quality spare parts;
use of parts and consumables mismatching a particular vehicle model;
pushrod offset;
loosening or breakage of clamps.
Diagnostics
Analysis of the brake servo can be carried out independently. To do this, press the brake pedal 5-7 times with the engine off. Listen carefully to the sounds. A quiet hiss of the air means that the servo leaks.
After pumping the brakes start the engine. During the ignition starting the pedal should go forward 1-2 cm. If it remains in the same position, it is necessary to conduct a more detailed diagnosis in a service shop.
Then you can carry out another test. Depress the brake pedal until it stops with the engine running. Then stop it, but continue to hold the pedal for 1-2 minutes. When air pipes are damaged and system leaks, back pressure in the pedal and effort for its retention will be significantly increased.
Repair and replacement of the brake servo
Repair of the part is carried out only for minor injuries of diaphragm or valves. However, it involves the use of only original parts. You can use the universal parts, but they require separate testing for compatibility.
Damaged casing or a more serious fault require only replacement of the element.
Before removing the brake servo you must stop the engine. For greater convenience we recommend to fix the car on a lift platform. First, you need to disconnect the push rod from the brake pedal. It is located under the steering shaft. Be careful not to damage the related mechanisms.
Next, unscrew the fastening and remove the brake master cylinder. The last step is to disconnect the vacuum hose from the valve. You can then completely remove the part and install a new one.
