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Checking the brake (every 12 000 km (7500 miles) or time in 6 months)
| Detailed illustration of the position of components of brake mechanisms are given in Chapter Brake System. |
| Generated in brake mechanisms dust can contain unhealthy asbestos. In no case do not blow off the dust with compressed air brake and avoid inhaling it. When carrying out repair and maintenance of brake mechanisms use a special filter mask or respirator. Under no circumstances do not use for cleaning brake components petroleum solvents. For this purpose, to be used only special cleaning composition or denatured alcohol! |
In addition to the agreed schedule of routine maintenance of the car brake system inspection period, the state of the brakes should be checked each time the wheels are removed or is in any brake failure. To check the status of components of brake mechanisms of the vehicle must be raised off the ground and set on props. Remove the wheel (see. Section Poddomkrachivanie and towing at the beginning of the Guide). Disc brakes Disc brakes are usually equipped with front-wheel drive car, but in some cases - and back. Brake pad wear more than stipulated in the Specifications limits may cause permanent damage to the brake discs. Supports of disk brake mechanisms, which are mounted pads, after removing the wheels are clearly visible. Each caliper has one outer brake pad and one internal. It should be checked the status of all four pads. Each caliper equipped with a sight window or opening through which the state can be checked pad. The thickness of the pad linings should be checked by looking into the support from each of its ends, as well as through the upper viewing window. If the material pads is worn below the allowable limit (less than 7.9 mm), the whole set of pads should be replaced. | Pads disk brake mechanisms can be viewed through a specially provided for in case of a support hole - to attach to the measurement range of the viewing window. |
| - If you encounter difficulties in determining the thickness of the residual friction material, remove the pads for a more detailed study (Chapter Brake System).
- Before setting the wheels in place, make sure there is no leakage of brake fluid and / or damage the brake hoses (cracks, splitting, etc.) in the area of connecting them to the nipples calipers. If necessary, replace the hoses (or nipples) (Chapter Brake System).
- Check the condition of the brake discs. In case of deep scratches, fissures and signs of overheating, the hub assembly with the disc must be removed for restoration work (Chapter Brake System).
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Drum brakes | - At the rear brake mechanisms remove the drum by pulling them with pins drive shafts / semiaxes and brake assemblies. If the drum is not amenable to removal, make sure that the parking brake is released, and then soak the oil penetrates the joint between the hub and drum, and then try to remove the drum.
- If the drum is still not amenable to removal, you need a little "let go" mechanism samoregulyatora. To do this, you must first remove the shield of the brake a little plug.
- After removing the cap, insert a thin screwdriver into the hole and lift the lever control, taking him from the toothed wheel, and then using a special adjustment tool or screwdriver again turn the wheel back a few turns. This will result in moving away from the brake shoe of the drum wall. If the drum is not removed and now it Tap the inside around the perimeter of the hammer with soft brisk.
| - A thin screwdriver to lift the control lever, and then a special tool or screwdriver to turn the other vacated the gear back a few turns.
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- After removing the drum, be careful not to touch the brake dust (see. The warning at the beginning of the section).
- Check the thickness and condition of the friction linings of both (front and rear) brake shoes. If the material linings worn below the permissible limit (1.6 mm), the shoes should be replaced. The shoes should be replaced as and when they detect the presence of cracks or zapolirovat to shine or contaminated with oil / brake fluid sections overlap.
| - If laths glued on boots, measuring their thickness is made from the upper edge of the metal substrate to the outer edge of the pad as shown in the figure, if the pad is riveted, the measurement is made from the outer edge of the pad to the surface of rivet heads.
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- Make sure all the spring brake connected and are in satisfactory condition.
- Check brake components for signs of leakage of brake fluid. Carefully pry the rubber anthers wheel cylinders located in the upper part of the shoe. The presence of any signs of leaks requires an immediate overhaul of wheel cylinders (Head Brake system). Also check for signs of leaks brake hoses and couplings.
| - To check the status of the wheel cylinder with a small screwdriver carefully pry the rubber boot of the cylinder.
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- Wipe the inside of the drum with a clean cloth dampened with a special cleaner or methylated spirit. Remember that asbestos is very harmful to health - do not inhale brake dust!
- Check the inner surface of the drum for cracks, cavities, deep scratches, hot spots, which are visible on the surface discoloration. If the defects can not be eliminated using a fine sandpaper, the drum should be delivered to the workshop for service centers groove.
- If the examination of all the components found in a satisfactory condition, set the drum in place.
- Establish wheels and lower the car to the ground.
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Parking brake Parking brake control is carried out manually by means of a lever. It affects the parking brake on the rear wheel brakes. The simplest and most obvious way to check the health of the functioning of the parking brake is to stop the car on an inclined plane. If the cocking lever parking brake does not hold the car stationary on an incline, the brake needs to be adjusted (Chapter Brake System).
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