BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car

+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engine
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. Exhaust system
+ 8. Transmissions
+ 9. Coupling
+ 10. Brake system
+ 11. Running gear
+ 12. Body
+ 13. Electric equipment
- 14. Useful tips
   14.2. The changed numbers
   14.3. Purchase of the old car or mysterious set of figures and letters
   14.4. Durability of the car
   14.5. About parallelism of bridges of the car and trailer
   14.6. Preparation of the car for winter
   14.7. Rule 35
   14.8. Choice of the used car
   14.9. Engine oils
   14:10. What needs to be known, changing oil
   14:11. Emergence in deposit oil
   14:12. Whether it is possible to mix import oils?
   14:13. "Eats" much, but quietly goes
   14:14. It is rather live, than is dead …
   14:15. It is not got - useful tips
   14:16. Visit to car service
   14:17. A gear belt for the gas distribution mechanism drive
   14:18. Wear of pistons
   14:19. Valves
   14:20. Bearings of engines
   14:21. Pollution of the engine
   14:22. As the conditioner works and what to do if it failed
   14:23. Conditioner: not only "pluses", but also "minuses"
   14:24. Rules of service of the conditioner
   14:25. Antifreeze you should not disturb with antifreeze …
   14:26. What should be known upon purchase of the air filter
   14:27. Engine overheat
   14:28. What should be known to the owner of the car with the injector engine
   14:29. Accumulator
   14:30. Possible malfunctions of the rechargeable battery
   14:31. What to do with the failed generator
   14:32. The belt is guilty, and we blame the generator
   14:33. Catalyst
   14:34. Rub in one - or how to save the catalyst
   14:35. Probuksovochka
   14:36. Features of operation of the brake system
   14:37. Malfunctions of the brake system
   14:38. Brake fluids
   14:39. ABS: natural choice
   14:40. Rims
   14:41. We update rims
   14:42. Scheme of marking of a car tire
   14:43. Metal corrosion
   14:44. Automake-up
   14:45. What creaks?
   14:46. Hatch
   14:47. Safety cushion: troubles or pleasures?
   14:48. We fit well?
   14:49. Anticreeping "immunodeficiency"
   14:50. Why headlights grow dull
   14:51. Galogenka
   14:52. About the correct adjustment of headlights
   14:53. Electric motor
   14:54. From change of the places "composed" nothing changes?


14:37. Malfunctions of the brake system


At your car brake shoes too quickly wear out? There was a beating of brake disks? You do not hurry to accuse of all brakes. Often in strangers, at first sight, phenomena it is necessary to look for the true reasons of failure of details of brake systems.

Wheel and tire

By Kolebo it has to be assembled faultlessly balanced. Make sure that there is no radial and face beating both rims, and tires. Wheel bolts should be tightened only with the ordered moment and in the correct sequence (evenly and cross).

Brake mechanisms

Be convinced of a good general shape of brake systems. Protective caps should not have damages. The course of pistons, in perfect tune – the directing elements (directing the plugs directing the bolts sending to the plane) has to be faultless. The established new blocks have to have good mobility in guides of a support and fastening.

Brake shoes

Use only original brake shoes of the ATE brand (or another, allowed to application). Select them precisely according to type of the car and year of its production. Needlessly do not allow sharp braking the first 200 km after replacement of blocks to provide them soft "running in grinding in".

Brake disks

It is necessary to change brake disks at the same time on all axis, having taken new it is obligatory from one packing. By means of suitable solvent completely remove anticorrosive protection from a disk. Surfaces of flanges and centering openings have to be pure, without agnails and damages. Do not forget that at the ventilated disks it is necessary to consider the directions of rotation, and it is impossible to delete balancing brackets. Centering should be made strictly observing the ordered moment and the correct sequence of an inhaling. Replacing brake disks, surely change also blocks. At emergence of difficulties to a priflantsuyta disks with the ordered inhaling moment also check a face beating by means of the arrow indicator at distance of 10 mm from the outer edge of a frictional surface. If a beating too strong, then whenever possible move a disk step by step to other provisions, again checking a beating.

Wheel nave

The site for a flange and the aligning opening should be smoothed out an emery cloth before emergence of metal gloss. On them there should not be neither rust, nor dirt. They should not be warped and damaged. It is not necessary to put greasing pastes (including copper). Check the site for a flange and the aligning opening for lack of a beating and for the plane. Consider that the beating of a nave involves twice a bigger beating of disks. Priflantsovyvy a brake disk, observe the recommended moment and the correct sequence of an inhaling.

Wheel suspension bracket

Levers of an independent suspension bracket should not be deformed, and saylent-blocks – soft and broken. In safety there have to be rubber plugs of shock-absorbers, and shock-absorbers (or are resistant) – in the faultless working condition. Check that the angles of installation of wheels in accuracy conformed to requirements of manufacturer.

Bearings of wheels

Check degree of wear of bearings. Establish, fix and adjust them according to the instruction of manufacturer.


Check steering details for wear. Heads of steering drafts should not be broken, and drafts – deformed. The steering shock-absorber (if it is present at your car) has to be in the faultless working condition.