6.2. Possible malfunctions, their reasons and methods of elimination
Cause of defect
|
Elimination method
|
The increased working course of a pedal of a brake
|
|
1. Leak of brake fluid from wheel cylinders
|
1. Replace the failed details of wheel cylinders, wash out and dry blocks, disks and drums, pump over system of a hydraulic actuator
|
2. Air in the brake system
|
2. Remove air from system
|
3. Rubber sealing rings in the main brake cylinder are damaged
|
3. Replace rings and pump over system
|
4. Rubber hoses of a hydraulic actuator of brakes are damaged
|
4. Replace hoses and pump over system
|
5. The raised beating of a brake disk (more than 0,15 mm)
|
5. Proshlifuyte disk; if disk thickness less than 10,8 mm, replace it
|
6. Leak of liquid through sealing rings of a pusher of the regulator of pressure
|
6. Replace sealing rings
|
Insufficient efficiency of braking
|
|
1. Oiling of overlays of blocks of brake mechanisms
|
1. Smooth out slips a metal brush, applying warm water with detergents. Remove the cause of hit of liquid or lubricant on brake shoes
|
2. Jamming of pistons in wheel cylinders
|
2. Remove the causes of jamming, replace the damaged details, pump over system
|
3. Wear-out of overlays of brake shoes
|
3. Replace brake shoes
|
4. Overheat of brake mechanisms
|
4. Immediately stop and give will cool down to brake mechanisms
|
5. Application of blocks with inappropriate slips
|
5. Apply blocks only recommended by manufacturer
|
6. Wrong adjustment of the regulator of pressure
|
6. Adjust pressure regulator drive
|
7. Loss of tightness of one of contours (is followed by a partial failure of a pedal of a brake)
|
7. Replace the damaged details, pump over system
|
Incomplete disinhibition of all wheels
|
|
1. There is no free wheeling of a pedal of a brake
|
1. Adjust a free wheeling of a pedal
|
2. The vystupaniye of an adjusting bolt of a rod of the vacuum amplifier concerning the plane of fastening of the main cylinder is broken
|
2. Adjust a vystupaniye (1,25-0,2 mm) of an adjusting bolt
|
3. Swelling of rubber sealants of the main cylinder owing to hit in liquid of gasoline, mineral oils, etc.
|
3. Carefully wash out all system brake fluid, replace rubber details, pump over system of a hydraulic actuator
|
4. Jamming of the piston of the main cylinder
|
4. Check and if necessary replace the main cylinder, pump over system
|
Snubbing of one wheel at the released brake pedal
|
|
1. The coupling spring of blocks of a back brake broke or weakened
|
1. Replace a spring
|
2. Jamming of the piston in the wheel cylinder owing to pollution or corrosion of the case of the cylinder
|
2. Disassemble the cylinder, clear and wash out the details damaged replace, pump over system
|
3. Swelling of sealing rings of the wheel cylinder because of hit in liquid of gasoline, mineral oils, etc.
|
3. Replace rings, wash out brake fluid system of a hydraulic actuator of brakes, pump over system
|
4. Violation of provision of a support of rather brake disk when weakening bolts of fastening of a guide of blocks to a rotary fist
|
4. Tighten fastening bolts, if necessary replace the damaged details
|
5. Wrong adjustment of the parking brake system
|
5. Adjust the parking brake system
|
Drift or withdrawal of the car aside when braking
|
|
1. Jamming of the piston of the wheel cylinder
|
1. Check and eliminate jamming of the piston in the cylinder, if necessary replace the damaged details, pump over system
|
2. A blockage of any steel tube owing to a dent or a contamination
|
2. Replace a tube or clean it and pump over system
|
3. Pollution or oiling of disks, drums and slips
|
3. Clear details of brake mechanisms
|
4. Wrong adjustment of the drive of the regulator of pressure
|
4. Adjust the drive
|
5. Pressure regulator is faulty
|
5. Repair or replace the regulator
|
6. The angles of installation of wheels are broken
|
6. Adjust the angles of installation of wheels
|
7. Different pressure in tires
|
7. Establish normal pressure
|
8. One of contours of the brake system does not work (is followed by deterioration in efficiency of braking and the increased pedal course)
|
8. Replace the damaged details and pump over system
|
The increased effort to brake pedals when braking
|
|
1. The vacuum amplifier is faulty
|
1. Replace the amplifier
|
2. The hose, the connecting vacuum amplifier and an inlet pipe of the engine is damaged, or its fastening on unions weakened
|
2. Replace a hose or tighten collars of its fastening
|
3. Swelling of sealants of cylinders because of hit in liquid of gasoline, mineral oils, etc.
|
3. Carefully wash out all system, replace rubber details, pump over system
|
Peep or vibration of brakes
|
|
1. Weakening of a coupling spring of brake shoes of a back brake
|
1. Check a coupling spring, if necessary replace new
|
2. Emergence of ovality of brake drums
|
2. Chisel a drum
|
3. Oiling of frictional slips
|
3. Smooth out slips a metal brush, applying warm water with detergents. Remove the cause of hit of liquid or lubricant on brake shoes
|
4. Wear of slips or inclusion in them of foreign matters
|
4. Replace blocks
|
5. An excessive beating of a brake disk or its uneven wear (it is felt on vibration of a brake pedal)
|
5. With Proshlifuyte a disk, at a thickness less than 10,8 mm replace it
|