Dismantling and assembly of wheel cylinders of back brakes. 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
9.8.1. Removal and installation of the brake drum
9.8.2. Removal and installation of blocks of a back brake
9.8.3. Dismantling and assembly of wheel cylinders of back brakes
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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9.8.3. Dismantling and assembly of wheel cylinders of back brakes

Dismantling

PERFORMANCE ORDER
1. To remove the brake drum.
2. To remove both coupling springs of blocks by means of nippers (see rice. Removal of a coupling spring of blocks of a back brake) and, moving apart blocks, to bring their ends out of cuts of basic cores of pistons.
3. To disconnect the hydraulic actuator pipeline.
4. To turn out two bolts of fastening of the wheel cylinder to a board and to take out the wheel cylinder from a back brake.
5. To remove antisplash covers 13 (see rice. Brake mechanisms of back wheels) from the cylinder and the screw-driver inserted into a groove of a basic core to turn pistons on 90 °, rotating them in any direction. Then to take out pistons from a cylinder cavity.
6. To remove from the piston a sealing rubber cuff 16.
7. To turn out the valve of production of air 18 from the cylinder.
8. To wash out details of the disassembled cylinder fresh brake fluid, to examine and establish suitability them to further work.
9. Wheel cylinders on which working surface the deep risks or other defects leading to a leak of brake fluid are found should be replaced.
10. Grinding of a working surface of wheel cylinders is not allowed because it will lead to loss of a tightness of persistent rings of the automatic device in the wheel cylinder and thereof – to loss of operability of the automatic device.

Assembly

PERFORMANCE ORDER
1. Assembly of wheel brake cylinders needs to be made upside-down, considering at the same time the following.
2. Before assembly carefully to wash out all details in fresh brake fluid.
3. To put on the piston a cuff so that it with a big diameter was turned by the party by the end of the piston inserted into the cylinder.
4. To insert pistons with cuffs into the cylinder and to turn them on 90 ° in any direction. Cuts of basic cores of pistons at the same time have to be parallel to the privalochny surface of the cylinder.
5. Then to shift pistons as it was described in subsection 9.8.2.
6. After installation and fastening of the cylinder on a back brake, assemblies of blocks with springs and installations to the place of the brake drum it is necessary to pump over a hydraulic actuator and to be convinced of free rotation of the drum at the released pedal.


9.8.2. Removal and installation of blocks of a back brake

9.9. Adjustment of the mechanism of the manual drive of the parking brake system