Checking and adjusting the brake pedal 1. Pull out the mat under the brake pedal. 2. Measure your brake pedal height (pic. 14.2). It should be: left-hand drive vehicles: 163.5-166.5 mm, right-hand drive...
Checking the brake light switch Connect an ohmmeter to the brake light switch wiring connector and test the switch for continuity with the contact pin pressed and not pressed (pic. 14.7). The brake...
Functional test of the brake booster valve 1. Connect the pressure gauge on the inlet and outlet side of the brake booster valve (pic. 14.8) Pic. 14.8. Connect the pressure gauge on the inlet and outlet side of...
Checking the front brake disc Front Brake Disc Thickness Check 1. Measure the disc thickness with a micrometer at eight points offset by 45 degrees and 10 mm from the edge of the disc (pic. 14.14)....
Checking the rear wheel brakes Checking the thickness of the brake lining 1. Remove the brake drum. 2. Measure the thickness of the brake lining at the most worn area (pic. 14.16). Nominal value: 4.3...
Brake pedal — design description The brake pedal of left-hand drive cars is shown in fig. 14.18, the brake pedal of cars with right-hand drive - in fig. 14.19. Pic. 14.18. Brake pedal for left-hand...
Master brake cylinder and vacuum booster The main brake cylinder and the vacuum booster are shown in fig. 14.20a. The main brake cylinder in disassembled form is shown in fig. 14.20 b. Pic. 14.20a. Master brake...
Front wheel disc brake The disk brake mechanism of a forward wheel is shown on fig. 14.23. The support of the disk brake mechanism is shown on fig. 14.24. Pic. 14.23. Front wheel disc brake: 1...
Drum brake mechanism of the rear wheel The drum brake mechanism of a back wheel is shown on fig. 14.25 a, b. The brake cylinder of a back wheel is shown on fig. 14.26. Pic. 14.25a. Rear wheel drum brake...
Brake booster valve The valve of the amplifier of a brake drive is shown on fig. 14.27. Connection of brake pipes to the valve of the amplifier of a brake drive is shown in fig. 14.28. Pic....
Scheme of the parking brake system The diagram of the parking brake system is shown in fig. 14.29. Pic. 14.29. Scheme of the parking brake system
Parking brake system drive lever The lever of a drive of parking brake system is shown on fig. 14.32. Pic. 14.32. Parking brake lever: 1 - Adjusting nut; 2 - Bracket; 3 - Lever drive parking brake...
Parking brake system drive cables Cables of a drive of parking brake system are shown on fig. 14.33. Pic. 14.33. Parking brake cables: 1 - Brake drum of the rear brake mechanism; 2, 5 - Springs; 3 -...
Anti-lock braking system ABS — general description The anti-lock braking system ABS consists of wheel speed sensors, a brake light switch, a hydraulic unit and an electronic control unit (ABS-ECU). If a malfunction...
Checking the output voltage of the wheel speed sensor 4. Raise the vehicle and release the parking brake lever. 5. Disconnect the wiring connector from the control unit and measure the output voltage between the connector...
Checking the ABS Solenoid Valves Measure resistance between terminals (pic. 14.37 and table 14.8). Pic. 14.37. Checking the solenoid valves Table 14.8. Solenoid valve resistance Solenoid valve Terminal...
ABS hydraulic control unit The hydraulic control box is shown in fig. 14.38. Pic. 14.38. Hydraulic control unit: 1 - Brake pipelines; 2 - Bracket for fastening wiring connectors; 3 - Hydraulic...
ABS electronic control unit The ABS electronic control unit is shown in fig. 14.40. Pic. 14.40. ABS electronic control unit: 1 - Bracket for mounting the ABS control unit; 2 - ABS control unit