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?

this 621199f4

14:52. About the correct adjustment of headlights


The correct adjustment of headlights belongs to culture of driving to a large extent, than to any technical problems. Therefore we will talk about why over time headlights begin to give dim light, perhaps, and sufficient on the desert highway, but absolutely inefficient on recovered, especially, if the counter flow is big.

Sometimes sin on the generator and the regulator of tension. There is a grain of truth: malfunctions of these devices are noticeable by the "movement" of a light stream as if submitting to quantity of turns of the engine. It is clear, that unimportant operation of the generator and regulator of tension influences not only on efficiency of headlights – first of all the accumulator, or not receiving a full-fledged charge, or, on the contrary, suffers – receiving it there is a lot from what electrolyte "boils". Headlights in this case play only an indicator role though excess tension strongly reduces a resource of lamps. Constant dim radiation arises for other reasons: or strongly the reflector becomes soiled or becomes covered by corrosion, or the dark raid on an internal surface of a flask of a lamp appears.

If durability of a reflector depends on many factors, then even quite serviceable lamp "gathers" a dark raid for some 30–50 thousand kilometers. Efficiency it in that case percent is 20 lower than new.

The reflector "lives" longer. In modern cars the reflector and glass of a headlight are, so to speak, an integrated whole that first of all provides the most optimum light bunch, and in the second – tightness. The lack of tightness promoted penetration in a headlight of dust which burned then on a reflector and reduced its luminous efficiency. The same happened also to the moisture which was actively condensed on a reflector that caused corrosion.

Tried to fight against corrosion in some improbable way about five years ago, filling in red brake fluid in a headlight. The fashion for this, rather harmful, than useful invention passed, but other extreme – plexiglass "points" on glasses appeared. Except that such protection reduces luminous efficiency, "smearing" the direction of beams, it causes strong heating and an obgoraniye of a reflector. To what in that case use from the glass protected from stones if the reflector suffers, – it is not clear, especially as how it was already told, glass and a reflector nowadays represent an integrated whole? By the way, therefore there is no sense to buy "lens" separately: never to achieve good light from such headlight.

At last, as for adjustments. Even the most excellent headlights supplied with halogen lamps can be on the way useless if they are adjusted somehow. Not everyone and not always has an opportunity to make adjustment at the stand. Therefore very quite good results are yielded by the old, well tested ways of "house" adjustment. The car is installed on the flat platform, measure 30 meters and put on a mark, let us assume, a brick. One of headlights included on passing beam something is veiled, and in the second – rotate adjusting screws so that vertically to bring limit of illumination to the put brick. The same is done also with other headlight. Driving beam is regulated in the horizontal direction, but already without brick: here it is important to achieve that bunches from both headlights did not fork and did not meet in the middle.