22:12. Main brake cylinder
Prevention
The brake fluid used in hydraulic system of coupling is poisonous therefore at its hit on skin it is necessary to wash out immediately this place a plentiful amount of water. If liquid got into eyes or in an organism, it is necessary to see a doctor immediately. Some liquids have property to ignite easily and can light up even from contact with hot knots of the car. Besides, the liquid used in hydraulic system of coupling dissolves paint and plastic therefore at hit of liquid on a paint and varnish covering of the car wash out it a plentiful amount of water. Also this liquid is hygroscopic, i.e. absorbs moisture from air and therefore the liquid which is stored a long time in open ware is not recommended to be used.
Removal
| PERFORMANCE ORDER |
| 1. Remove a weight wire from the accumulator. |
| 2. Disconnect the electric socket from the sensor of level of brake fluid. |
| 3. Press several times a brake pedal to fill with air the vacuum amplifier of brakes or to take off pressure in the hydraulic block of the servomotor. |
| 4. Uncover a tank of the brake system and, using the syringe, pump out brake fluid. Alternatively unscrew any union of pumping and, pressing a brake pedal, merge brake fluid through a plastic pipe in the corresponding vessel. |
| 5. Disconnect from a popolnitelny tank of the brake system a hose of supply of liquid in hydraulic system of coupling and close it a stopper. |
| 6. Having pulled up, remove a popolnitelny tank from the main brake cylinder. Remove rubber consolidation of a popolnitelny tank from the main brake cylinder and close openings traffic jams. |
| 7. Clear places of connection of brake tubes to the main brake cylinder. Mark the brake tubes suitable to the main brake cylinder. Arrange pure rags under the main brake cylinder, unscrew nuts of fastening of brake tubes and take aside from the main brake cylinder brake tubes. Close the ends of tubes the corresponding traffic jams. |
8. Unscrew two nuts fixing the main brake cylinder to the vacuum amplifier of brakes and remove the main brake cylinder. Remove a sealing ring from a back part of the main brake cylinder.
Prevention
Removal of the main brake cylinder you make only after a detachment it from a pusher of the vacuum amplifier of brakes, otherwise the vacuum amplifier of brakes will be damaged.
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Repair
Prevention
On cars of an ustanavliv two types of brake cylinders therefore at acquisition of details for the brake cylinder consider its type yutsyatsya.
Main brake cylinder of the Teves model
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1 – sealing plugs of fastening of a popolnitelny tank;
2 – sealing ring;
3 – primary piston;
4 – persistent washer;
5 – lock ring;
6 – sealing ring;
7 – plug;
8 – washer;
9 – sealing ring;
10 – sealing ring;
11 – spring nest;
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17 – spring;
20 – secondary piston;
21 – spring;
22 – case of the main brake cylinder;
24 – valve spring;
25 – consolidation of the valve;
27 – pin of fastening of the secondary piston;
28 – valve pin;
B – an opening for liquid supply;
C – compensation openings;
D – openings for supply of liquid and compensation |
| PERFORMANCE ORDER |
| 1. Clear all pollution from the case of the main brake cylinder. |
| 2. Note an arrangement and remove from the main brake cylinder sealing plugs of a popolnitelny tank (see the drawing). |
| 3. Being careful, fix the case of the main brake cylinder in a vice with soft sponges. Using a steel core, press the piston into the main brake cylinder and take a pin of fastening of the secondary piston. |
| 4. Repeatedly press the piston into the main brake cylinder and remove a lock ring, a washer and a sealing ring from a back part of the main brake cylinder. |
| 5. Noting an arrangement of details, take knot of primary piston and a spring from the main brake cylinder. |
| 6. Knock with a back part of the case of the main brake cylinder about a board and take from it knot of the secondary piston and a spring. |
| 7. Using methyl alcohol, clear all details of the main brake cylinder. Do not use gasoline which dissolves rubber details of the brake system. Using compressed air or pure rags, dry or wipe dry details of the main brake cylinder. |
| 8. Check a condition of details of the main brake cylinder and, if necessary, replace. Pay special attention to a condition of channels of the main brake cylinder and pistons. In the presence of scratches, рисок, wear and traces of pointed corrosion replace the main brake cylinder assembled. |
| 9. Irrespective of a state replace all rubber sealing rings. |
| 10. Dip primary and secondary pistons and new sealing rings into brake fluid and apply a thin film of brake fluid on openings for pistons in the main brake cylinder. |
| 11. Establish a spring on knot of the secondary piston and, being careful and turning, install the secondary piston in the channel of the main brake cylinder. |
| 12. Check that the groove of the secondary piston is correctly established concerning the case of the main brake cylinder, then press the piston and fix it by a pin. |
| 13. Establish a spring on knot of primary piston and, being careful and turning, install primary piston in the channel of the main brake cylinder. |
| 14. Using a steel core, press primary piston and establish a new sealing ring, a washer and a lock ring. Check that the lock ring reliably was established in a flute of the main brake cylinder. |
| 15. Insert new fixing consolidations of a popolnitelny tank. |
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Installation
| PERFORMANCE ORDER |
| 1. Clear the interfaced surfaces of the main brake cylinder and the vacuum amplifier of brakes and establish a new sealing ring on a back part of the main brake cylinder. |
| 2. Install the main brake cylinder on the vacuum amplifier of brakes. At the same time the pusher of the vacuum amplifier of brakes has to be established in an opening of primary piston. Screw nuts of fastening of the main brake cylinder and tighten them the required moment. |
| 3. Wipe brake tubes, install them on the places in the main brake cylinder and fix by connecting nuts, having tightened them the required moment. |
| 4. Install a popolnitelny tank of the brake system on the main brake cylinder and connect to it a hose of supply of liquid to hydraulic system of coupling. |
| 5. Fill in brake fluid in a popolnitelny tank of the brake system and remove air from the brake system. |
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