Possible malfunctions of brake management. AZLK 2141 (Muscovite)
Service and car repairs of 2141 - the Muscovite.
1. General data
2. Engines
3. Power supply system
4. Cooling system
5. Transmission
6. Running gear
7. Tires, wheels
8. Steering
9. Brake management
9.1. Specifications and characteristics
9.2. General assessment of technological level of a condition of brake management
9.3. Main cylinder of a brake
9.4. Removal and dismantling of the main cylinder of a brake
9.5. Assembly of the main cylinder of a brake
9.6. Vacuum amplifier
9.7. Brake mechanisms of forward wheels
9.8. Brake mechanisms of back wheels
9.9. Adjustment of the mechanism of the manual drive of the parking brake system
9.10. Pressure regulator
9.11. Signaling device
9.12. Removal of air from a hydraulic actuator of brakes (pumping of brakes)
9.13. Reduction of the signaling device in the working condition
9.14. Possible malfunctions of brake management
10. Body
11. Electric equipment
12. Electrical circuitries
 










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9.14. Possible malfunctions of brake management

REASON
ELIMINATION METHOD
The increased course of a brake pedal
Leak of brake fluid from a hydraulic actuator of the brake system
To establish the reason of a leak and to eliminate with replacement of the damaged details or tightening carving соединений*. To pump over a hydraulic actuator and brakes
Penetration of air due to the lack of liquid in a tank of the main cylinder of a brake
To fill in brake fluid in a tank of the main cylinder of a brake to normal level and to pump over a hydraulic actuator
Unsatisfactory work of cuffs of the main cylinder of brakes
To disassemble the main cylinder of brakes and to replace defective parts
Increase in a gap between blocks and a drum in a back brake because of violation of operability of the automatic device
To weaken action of a coupling spring of blocks shift of one of its ends in nearby the opening located on a block edge to dia. 5 mm. If at the same time operability of the automatic device is not restored, through a big opening in the brake drum at the removed wheel to define a block at which "sock" (the end of a block leaning on the piston of the wheel cylinder) moves during the pressing and an otpuskaniye of a pedal more than to 2 mm (1,4–1,7 mm at the serviceable mechanism). To remove a drum and to be convinced by measurement of diameter on blocks in their middle part of correctness of establishment of defect – diameter less than 229 mm indicates violation of operability of the automatic device. To replace a persistent ring in the wheel cylinder of a brake
Spontaneous zatormazhivaniye of the car
Wrong adjustment of the vacuum amplifier
To replace the amplifier or to adjust him at service station
Opening contamination in a cover of a tank of the main cylinder of a brake
To clean an opening
Incomplete return of a pedal of a brake back after an ottormazhivaniye
To remove a pedal of a brake and to clear its axis of dirt, rusts, to smooth out agnails at the plastic plugs inserted into a pedal opening. To replace an ottyazhny spring of a pedal
Swelling of cuffs of the main thing and wheel cylinders
To merge brake fluid and to wash out a hydraulic actuator fresh brake fluid, to replace the damaged rubber details. To fill in the recommended brake fluid in system
Contamination of compensation openings of the main cylinder of a brake
To remove a tank of the main cylinder of a brake and connecting plugs. To clean a soft wire to dia. 0,6 mm compensation openings
Overlapping of compensation openings a cuff edge because of incomplete withdrawal of the piston back at completely released pedal or because of swelling of a cuff
To disassemble the main cylinder of a brake, to wash out details fresh brake fluid. To assemble the main cylinder of a brake and to be convinced that pistons vigorously depart back, releasing compensation openings. When swelling cuffs to wash out details of the main cylinder of a brake alcohol or fresh brake fluid and to replace cuffs
Heating of a drum of the back brake mechanism because of spontaneous snubbing of a wheel
Easing or breakage of a coupling spring of blocks
To replace a spring
Not return of blocks in from a tormozhenny state because of swelling of cuffs wheel the cylinder
To remove the brake drum, blocks, to take out pistons from the wheel cylinder. To carefully wash out details of the wheel cylinder fresh brake fluid and to replace the damaged cuffs
Distortion of blocks because of violation of provision of basic racks owing to deformation of boards
To remove the brake drum and blocks and to correct boards with basic racks to the parallel provision of blocks concerning a drum
Cables of the drive of the parking brake system are excessively tense
To adjust a tension of cables
Wrong adjustment of length of an expansion level
To adjust length of an expansion level in the corresponding back brake
Heating of a brake disk of a forward brake because of spontaneous snubbing
Jamming of blocks because of excessive pollution of basic surfaces of a support
To remove blocks. To clear basic surfaces of blocks of a support, use of white spirit with the subsequent washing with soap water and drying with a stream of compressed air is allowed for removal of pollution
Jamming of pistons because of pollution in bracket cylinders
To remove a bracket, to remove pollution, to replace antisplash covers
When braking the car brings or takes away aside
Pollution or oiling of overlays of brake shoes
To clear a brake of dirt and oil. To replace blocks with greasy slips, or to carefully clear surfaces of slips and to wash out hot water with soap a hair brush. To establish and remove the cause of oiling of blocks (to check a condition of cuffs of pistons of wheel cylinders)
Contamination of the pipelines or hoses bringing liquid to wheel cylinders of brakes on one of the parties of the car
To sort and wash out pipelines, hoses and connecting couplings alcohol or fresh brake fluid, to blow dry compressed air, if necessary to replace the mentioned details
Teases on the working surface of the reel of a back brake
To remove a drum and to smooth out the damaged places. If necessary to chisel, proshlifovat or replace a drum
Back wheels are blocked before lobbies because of malfunctions of the regulator of pressure:
  – pressure regulator is incorrectly adjusted
To adjust pressure regulator
  – a leaky prileganiye of a ball in pressure regulator sleeve nest
To disassemble the regulator of pressure, to condense with easy blows of the hammer through a mandrel a ball in a valve nest
  – the cuff of a big step of the piston of the regulator of pressure collapsed
The regulator of pressure to sort, replace the damaged cuff
  – lack of tightness between regulator cavities because of destruction of consolidation between cavities
The regulator of pressure to sort, wash out all details, to replace the damaged consolidations
Braking of the car requires excessive effort when pressing a pedal
Pollution or oiling of overlays of brake shoes
To clear a brake of dirt and oil, to replace blocks with greasy slips, or to carefully clear surfaces of slips and to wash out hot water with soap a hair brush. To establish and remove the cause of oiling of blocks (to check a condition of cuffs of pistons of wheel cylinders)
Bad prileganiye of brake slips to the working surface of brake drums
To saw round the acting places of slips a file. Not to saw round new slips as after the car run about 500 km they are earned extra
The diaphragm of the amplifier is damaged
To replace a diaphragm
Damage of an external cuff of the main cylinder of a brake
To replace a cuff
The cuff of the case of the piston of the amplifier is damaged or polluted
To replace a cuff, to clear the case of the piston of the amplifier of dirt and to grease
The surface of the case of the piston of the amplifier is damaged
To replace the amplifier
The sealing ring of a cover of the amplifier is damaged
To remove the main cylinder of a brake, to replace a sealing ring of a cover of the amplifier
Tightness of consolidation of the backpressure valve of the amplifier is broken
To replace rubber consolidation
Difficult movement of pistons in cylinders of brackets of a forward brake at excessive pollution of "mirror" of cylinders or swelling of cuffs because of hit of mineral oils
To sort brackets and to replace the damaged details, to smooth out the surfaces of cylinders
Weak operation of the drive of the parking brake system
Pulling and weakening of cables of the drive
To adjust a tension of cables
Jamming of a back cable in the directing tubes of boards of back brakes
To disconnect a cable, to clean the directing tubes and to grease cable branches. After installation of a cable to be convinced of its free movement in tubes

* For elimination of dribble of brake fluid in places of accession of flexible hoses to a bracket, in the place of accession of a flexible hose to a tee of the back bridge it is necessary to release an opposite tip of a flexible hose, having turned out a nut of the pipeline and having turned off a nut of fastening of a flexible hose to an arm, or having removed the spring bracket installed on the car since October, 1993.

9.13. Reduction of the signaling device in the working condition

10. Body