Mercedes W124

since 1985-1995 of release

Repair and car operation



W124 Mercedes
+ Governing bodies and control devices
+ MAINTENANCE
+ 2. Maintenance (diesel engines)
+ ENGINE
+ 4. Repair of 6-cylinder petrol SOHC engines
+ 5. Repair of 6-cylinder petrol DOHC engines
+ 6. Repair of the diesel engine established in the car
+ 7. Major maintenance of engines
+ COOLING SYSTEM
+ FUEL SYSTEM
+ 10. System of injection of BOSCH CIS-E fuel (KE-JETRONIC)
+ 11. System of injection of BOSCH HFM fuel
+ 12. Fuel system of diesel engines
+ 13. Fuel system of diesel engines
+ SYSTEMS OF START, IGNITION
+ 15. System of ignition of 4-cylinder petrol engines
+ 16. System of ignition of four-cylinder petrol engines
+ PRESTARTING HEATING
+ TRANSMISSION
+ 19. Mechanical transmission
+ 20. Automatic transmission
+ POWER SHAFTS
+ BRAKE SYSTEM
+ SUSPENSION BRACKET
+ BODY
+ ELECTRIC EQUIPMENT
- CHECK OF MALFUNCTIONS
   26.2. Cooling system
   26.3. Fuel and exhaust systems
   26.4. Coupling
   26.5. Mechanical transmission
   26.6. Automatic transmission
   26.7. Differential and driveshaft
   26.8. Brake system
   26.9. Suspension bracket and steering
   26.10. Electric equipment






26.8. Brake system

GENERAL INFORMATION

Prevention

Before determination of malfunction in brake system check corners of installation of forward wheels, a condition of tires and pressure in tires. In the presence of malfunctions in anti-blocking system of brakes repair of system is necessary for making at service station.


When braking the car withdraws aside

• On brake shoes on the one hand the car oil got.
• In whole or in part jammed the piston in a support.
• On the different parties of the car brake shoes with a different material of a friction are used.
• Bolts of fastening of a support are weakened.
• Steering or suspension bracket elements are worn-out or damaged.

Noise of brakes when braking

• The frictional overlay of a brake shoe is completely worn-out.
• Strong corrosion of a brake disk (can take place if the car a long time was not maintained).
• The stone got to a gap between a brake disk and a brake board.

Too big course of a pedal of a brake

• The main brake cylinder is faulty.
• There is an air at hydraulic system of brakes.
• The vacuum amplifier of brakes is faulty.

Softness of a pedal when braking

• Damage of rubber hoses of brake system.
• Fastening of the main brake cylinder is weakened.
• The main brake cylinder is faulty.
• There is an air at hydraulic system of brakes.

By pressing a pedal of a brake it is necessary to put considerable effort

• The vacuum amplifier of brakes is faulty.
• The vacuum hose of the vacuum amplifier of brakes is disconnected or damaged.
• Damage to one of contours of hydraulic system of brakes.
• Jammed the support piston.
• Brake shoes are incorrectly established.
• Brake shoes not the corresponding type are established.
• Overlays of brake shoes are polluted.
• On models with diesel engines the vacuum pump is faulty.

Emergence of strong vibration when braking on a pedal of a brake or a steering wheel

• Strong wear or buckling of brake disks.
• Wear-out of overlays of brake shoes.
• Bolts of fastening of a support are weakened.
• Steering or suspension bracket elements are unreliably fixed.

Constant podtormazhivaniye of wheels

• Jammed the piston in a support of brakes.
• The parking brake is incorrectly adjusted.
• The main brake cylinder is faulty.

Blocking of back wheels at moderate braking

• Overlays of back brake shoes are polluted.
• Back brake disks are jarred on.