Daewoo Nexia

since 1994 of release

Repair and car operation


Deu Neksiya
+ Maintenance instruction
+ Maintenance
+ Engine
+ 3. Engine (two top camshafts)
+ cooling System
+ Toplevnaya and exhaust systems
+ Electric chain
+ 7. Ignition system
+ 8. Electronic control unit and sensors
+ Transmission
+ 10. Five-speed transmission and main RPO MM5 broadcast
+ 11. Automatic Transmission
+ Steering
+ Running gear
+ 14. Forward suspension bracket
+ 15. Drive of forward wheels
+ 16. Back suspension bracket
- Brake system
   17.2. General description
   17.3. Check of a technical condition of brake system
   17.4. Filling of a tank of the main brake cylinder
   17.5. Air removal from brake system
   17.6. Washing of brake system
   17.7. Check of a regulator of brake forces
   17.8. Brake hoses (forward)
   17.9. Brake hoses (back)
   + 17.10. Parking brake
   17.11. Check of a condition of forward brake slips
   17.12. Check of a condition of back brake slips
   17.13. Brake disks
   17.14. Brake drums
   17.15. Brake pedal
   17.16. Main brake cylinder
   17.17. Tank
   17.18. Regulators of brake forces (proportional valves)
   17.19. Main brake cylinder assembled
   17.20. Repair of the main brake cylinder
   17.21. Disk brake mechanism
   17.22. Blocks and slips
   17.23. Protective cover of the piston
   17.24. Brake disk
   17.25. Support
   17.26. Guard
   17.27. Support repair
   17.28. Drum-type brake mechanism
   17.29. Adjustment of the brake mechanism
   17.30. Adjustment of the parking brake
   17.31. Basic brake disk
   17.32. Wheel cylinder
   17.33. Repair of the wheel cylinder
   17.34. Vacuum amplifier of brakes
   + 17.35. Anti-blocking system of brakes
   17.36. Air removal from a brake hydraulic drive
   17.37. Air removal from a brake hydraulic drive manually
   17.38. The valve for air removal from the block of modulators
   17.39. Electromagnetic valves of modulators
   17.40. The block of hydraulic modulators with electric motors
   17.41. Electronic control unit braking
   17.42. Sensor of angular speed of a forward wheel
   17.43. Flexible conducting of DUS of a forward wheel
   17.44. Sensor of angular speed of a back wheel
   + 17.45. Flexible conducting of DUS of a back wheel
   17.46. System electric safety lock
   17.47. ABS relay
   17.48. Signaling devices
+ Body
+ Heating, ventilation
+ Electric equipment


8128da4b



17.14. Brake drums

 To check
PERFORMANCE ORDER
After dismantle it is necessary to clear and examine carefully brake drums on existence of cracks, scratches, deep flutes, and also to check deviations from a krutost (ovality) and tsilindrichnost (konusnost).

CRACKS, SCRATCHES, FLUTES ON THE SURFACE OF THE FRICTION OF THE DRUM

The brake drum with cracks is subject to replacement as does not provide safely сти the car. It is forbidden to make cracks on a drum. Small scratches and risks should be smoothed. In the presence of deep defects of a surface of a friction of a drum service life of blocks strongly reduces ся. In this case it is required to pierce a working surface of a drum. If blocks малоизношены, and on a surface of a friction of a drum are available small flutes, it is necessary to grind a drum a thin nazhdachny skin. To chisel a drum in this case it is not necessary. Complete removal of flutes from a surface of a drum and crests on slips can demand removal of too large number of a material. Meanwhile, earned extra to each other the drum and the blocks having small flutes and crests, provide quite satisfy telny operation of brake mechanisms. At replacement of blocks the drum having flutes, should be pierced. Otherwise will occur not only fast wear of new blocks, but also functioning of brake system will worsen.

OVALITY AND KONUSNOST OF THE BRAKE DRUM

Ovality and konusnost of a brake drum do not allow to adjust correctly brake mechanisms and cause the accelerated wear of details. Ovality of a brake drum can result also in fast and non-uniform wear of a protector of the tire and a pulsation of effort on a brake pedal when braking. At достиже on ovality and a konusnost the drum should be chiseled by scientific research institute of tolerances for restoration of the correct form. Ovality, a konusnost and wear of a brake drum is supervised by means of internal a micromeasure. Measurements of the sizes of the cylinder of a drum make in two perpendicular sections at edge and about a drum disk.