7.2. Possible malfunctions of brakes, their reasons and methods of elimination
Cause of defect
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Elimination method
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Insufficient efficiency of braking
|
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1. Leak of brake fluid from wheel cylinders of forward or back brakes
|
1. Replace unusable details of wheel cylinders, wash out and dry blocks and drums, pump over
system of a hydraulic actuator
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2. Air in the brake system
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2. Remove air from system
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3. Are damaged rubber a sealant in the main brake cylinder
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3. Replace a sealant and pump over system
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4. Rubber hoses of system of a hydraulic actuator are damaged
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4. Replace hoses
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Spontaneous braking at the working engine
|
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1. An air suction in the vacuum amplifier between the case of the valve and protective
cap:
a) destruction, sealant distortion
covers or its bad fixing owing to damage of the stopping details,
wear of a sealant
b) insufficient lubricant of a sealant
covers
|
1. Do the following:
a) replace the vacuum amplifier
b) remove a protective cap and put lubricant in a sealant
|
Incomplete disinhibition of all wheels
|
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1. There is no free wheeling of a pedal
brakes because of the wrong situation
stoplight switch
|
1. Adjust position of the switch
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2. The vystupaniye of an adjusting bolt of the vacuum amplifier concerning the plane of fastening of the main thing is broken
cylinder
|
2. Adjust a vystupaniye
(1,25-0,2 mm) adjusting bolt
|
3. Jamming of the case of the valve vacuum
the amplifier owing to swelling of a diaphragm or jamming of a sealant
covers of the amplifier or protective cap
|
3. Replace the vacuum amplifier
|
4. A contamination of a compensation opening in the main cylinder
|
4. Clean an opening and pump over
system of a hydraulic actuator
|
5. Swelling of rubber sealants
the main cylinder owing to hit in liquid of gasoline, mineral
oils, etc.
|
5. Carefully wash out all system
brake fluid, replace the damaged rubber details, pump over system of a hydraulic actuator
|
6. Jamming of the piston of the main cylinder
brakes
|
6. Check and if necessary replace the main cylinder, pump over
system
|
Snubbing of one of wheels at the released brake pedal
|
|
1. The coupling spring of blocks of a back brake weakened or broke
|
1. Replace a spring
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2. Jamming of the piston in the wheel cylinder owing to corrosion
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2. Disassemble the cylinder, clear and
wash out the details damaged replace
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3. Swelling of sealing rings
the wheel cylinder because of hit in
liquid of fuels and lubricants
|
3. Replace rings, wash out brake fluid system of a hydraulic actuator
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4. Lack of a gap between blocks and a drum
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4. Adjust the parking brake
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5. Violation of provision of a support of rather brake disk when weakening bolts of fastening to an arm
|
5. Tighten fastening bolts, if necessary replace povrezhenny
details
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6. The raised beating of a brake disk (more than 0,15 mm)
|
6. Proshlifuyte disk, if thickness
not less than 9 mm, replace a disk
|
Drift or withdrawal of the car aside when braking
|
|
1. Leak of brake fluid in one
from wheel cylinders
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1. Replace a sealant and pump over system
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2. Jamming of the piston of the wheel cylinder
brakes
|
2. Check and eliminate jamming
the piston in the cylinder, if necessary replace the damaged details
|
3. Blockage any steel
tubes owing to a dent
|
3. Replace a tube or clean it
also pump over system
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4. Different pressure in tires
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4. Adjust pressure
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5. Wrong angles of installation of wheels
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5. Adjust corners
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6. Pollution or oiling of disks, drums and slips
|
6. Clear details of brake mechanisms
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7. Wrong installation of the regulator
pressure
|
7. Adjust position of the regulator of pressure
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8. Pressure regulator is faulty
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8. Repair or replace pressure regulator
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The increased effort of pressing a brake pedal
|
|
1. The air filter of the vacuum amplifier is littered
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1. Replace the air filter
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2. Jamming of the case of the valve of the vacuum amplifier owing to swelling of a diaphragm or jamming of a sealant of a cover of the amplifier or a protective cap
|
2. Replace the vacuum amplifier
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3. The hose is damaged, the connecting vacuum amplifier and an inlet pipe of the engine or its fastening on unions weakened
|
3. Replace a hose or tighten collars of its fastening
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4. Swelling of sealants of cylinders because of hit in liquid of gasoline, mineral oils etc.
|
4. Carefully wash out all system,
replace the damaged rubber
details; pump over system
|
Scratch or squeal of a brake
|
|
1. Weakening of a coupling spring of brake shoes of a back brake
|
1. Check a coupling spring and at
replace need new
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2. Ovality of brake drums of back brakes
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2. Chisel drums
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3. Oiling of frictional slips
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3. Smooth out slips metal
brush, applying warm water with detergents. Remove the cause
hits of liquid or lubricant on
brake shoes
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4. Wear of slips or inclusion in them of foreign matters
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4. Replace blocks
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5. Excessive beating of a brake disk or uneven wear
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5. Proshlifuyte a disk, at a thickness
less than 9 mm - replace a disk
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