Daewoo Nexia

Since 1994 of release

Repair and car operation

17.5. Removal of air from brake system

THE GENERAL DATA

Operation on removal of air from brake system is spent in all cases of hit of air to a hydrodrive. At falling of level of a brake liquid in a tank and air hit in system through the main cylinder or at a detachment of pipelines from the main cylinder air delete from all contours and hydrodrive pipelines. If one has been disconnected only bracket or the wheel cylinder air removal is required to be made only from these cavities and corresponding pipelines. At dismantle of any pipeline and the subsequent assemblage it is necessary to remove air from a contour and the cylinder, which обслужива ются the given pipeline.

REMOVAL OF AIR FROM BRAKE SYSTEM MANUALLY

AND. CAPACITY CENTURY THE TUBE WITH. THE WRENCH 9. THE SUPPORT 15. THE VALVE OF RELEASE OF AIR

Before the operation beginning to spend a reserve of the vacuum amplifier, some times having pressed and having released a brake pedal. The engine should be thus switched off.

PERFORMANCE ORDER

1. To fill a tank with a brake liquid. In the course of work it is necessary to watch that liquid level did not decrease below half of norm. 2. If it is known that in the main cylinder there is air, it is necessary to pump over first of all a cavity of the main cylinder as follows. 2а. To disconnect pipelines of forward brakes from the main cylinder. 2б. To wait, while the liquid will fill the main brake cylinder and will start to follow from the union. 2в. To attach pipelines of forward brakes to the main cylinder. To tighten fastenings. 2г. Slowly to press a brake pedal once and to keep it in the pressed position. To weaken fastening of the pipeline of a forward brake to the main cylinder and to let the air out from the cylinder. To tighten the union and then slowly to release a brake pedal. To wait for 15 seconds. To repeat similar actions, including and a 15-second pause, some times, while all air does not leave the main cylinder. Not to suppose hit of a brake liquid on the painted surfaces of the Body. 2д. After removal of air from the main cylinder through unions of forward pipelines to repeat similar operations for air removal through back pipelines (the point 2г see). 2е. If it is known that in cylinders of lobbies скоб or in back wheel cylinders air is absent, prorolling of corresponding contours can to be made. 3. Removal of air from forward and back wheel cylinders is made only after prorolling of the main brake cylinder. 3а. To put on a wrench the valve of release of air. To put on a head of the valve a tube which second end to ship in capacity with a brake liquid. 3б. Slowly to press a brake pedal once and to keep it in the pressed position. To turn on it is a little valve and to let the air out from the cylinder. To tighten the valve and then slowly to release a brake pedal. To wait for 15 seconds. To repeat similar actions, including and a 15-second pause, some times, while all air does not leave the wheel cylinder. It can be necessary to repeat this procedure of 10 times or more for full removal of air. Fast pressing a brake pedal lead to moving of the secondary piston to the end of the main cylinder that complicates removal of air from system. 4. Sequence of removal of air from system:       – The right back wheel cylinder;       – The left forward wheel cylinder;       – The left back wheel cylinder;       – The right forward wheel cylinder. 5. To merge cooling liquid (to remove the bottom hose of a radiator).

THE MECHANIZED REMOVAL OF AIR FROM BRAKE SYSTEM

Necessary adaptations:

– The device for removal of air from a hydrodrive;
– An adapter.

It is authorised to use devices for air removal only диафрагменного type which have a diaphragm dividing air both a brake liquid and excluding hit of water, a dirt, oils etc. In a brake hydrodrive.

To establish or attach

PERFORMANCE ORDER

1. An adapter on the main cylinder. 2. To charge a receiver of the device pressure 140–172 кПа. 3. To attach the pipeline to an adapter and to open the pipeline valve. 4. To lift the car and to fix properly. 5. To put on a tube the valve of release of air and to lower the second end of a tube in the capacity partially filled with a pure brake liquid. 6. To open the valve of release of air on 1/2–3/4 turns and to let out a liquid until together with a liquid air vials will not cease to leave. 7. Sequence of removal of air from system:       – The right back wheel cylinder;       – The left forward wheel cylinder;       – The left back wheel cylinder,       – The right forward wheel cylinder. 8. To check up a brake pedal on "elasticity". If the brake pedal considerably springs, to repeat operations on removal of air from system.