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12.9. The main cylinder of the brake system - removal, a partition and installation

1. The main brake cylinder is installed in a motive compartment on a servoamplifier.
2. Pump out as much as possible brake fluid from a tank.
3. Put rags under connections of tubes and prepare caps or bags to close the ends of tubes after a detachment.

8.4 Turn off nuts of connections of brake tubes (are specified by shooters)



4. Turn off nuts of connections and disconnect brake tubes from the cylinder (8.4).
5. Take away the ends of tubes from the cylinder and close their ends.
6. Disconnect the socket of connection of the main cylinder, then turn off the nuts fixing the cylinder to a servoamplifier (8.6). Remove the cylinder

8.6 Disconnect sockets of connection and turn off fixing nuts of the cylinder (are specified by shooters)


.
Partition
7. Before a partition get the corresponding repair kit.

8.8a Turn off the fixing screw of a tank (it is specified by an arrow).



8. Examine tank plugs on existence of traces of leak and remove a tank (8.8a and 8.8b).

8.8b... also remove a tank



8.9 Press pistons deep into of the cylinder and unscrew the lock screw
14. Connect a brake tube and tighten a connection nut, then tighten fixing bolts of the cylinder till the required inhaling moment.



9.  Clamp the cylinder in a vice. Lower pistons deep into of the cylinder and unscrew the lock screw sideways of the cylinder (8.9).

8.10 Press pistons inside and remove a cutting lock ring



10. Accurately remove a lock ring on the edge of the cylinder (8.10).

8.11a Get primary piston from the cylinder



8.11b For extraction of the secondary piston, knock with the cylinder on a tree



8.11v Elements of the main brake cylinder
1.
Cover
2. Rings
3. Diaphragm
4.
Float
5. Sensor of level of brake fluid
6. Tank
7. Consolidations
8. Lock screw
9.
Laying
10. Main cylinder
11. Secondary piston
12. Primary piston
13. Ring
14. Repeat this operation until all air is removed, and pure brake fluid will not begin to follow from an opening, then close a cap, and repeat this operation with the second opening and a cap. When carrying out pumping it is optional to establish every time a cap into place - it is possible just to close an opening a finger.



11.   Get  internal  elements  of the cylinder (8.11a, 8.11b and 8.11v).
12. Examine the internal surface of the cylinder on existence of deep scratches or other damages and replace the cylinder if it is necessary. Install all spare parts from a repair kit and establish a new cutting lock ring.
13. Before installation of the main cylinder it needs to be pumped over. For this purpose clamp the cylinder in a vice, install caps on outlets and fill a tank with brake fluid. Open one cap and, having pressed on the piston, remove air from the cylinder, then close a cap that air did not get back to the cylinder.
14. Repeat this operation until all air is removed, and pure brake fluid will not begin to follow from an opening, then close a cap, and repeat this operation with the second opening and a cap. When carrying out pumping it is optional to establish every time a cap into place - it is possible just to close an opening a finger.
Installation
15. Install the cylinder on a servoamplifier and slightly put the fixing clamps. Connect brake tubes, then finally tighten fixing nuts of the main cylinder and brake tubes. Fill in brake fluid in a tank and pump over the brake system.