E30 series BMW 3

since 1983-1994 of release

Repair and car operation

+ 1. Maintenance instruction
- 2. Maintenance
   2.2. Recommended lubricants and liquids
   2.3. Periodicity of service
   2.4. Features of routine maintenance of the car
   2.5. General information on additional maintenance
   2.6. Check of level of liquids
   2.7. Check of a condition of tires and pressure in tires
   2.8. Oil replacement in the engine and the oil filter
   2.9. Check and restoration of level of liquid in a wheel
   2.10. Check of level of liquid in automatic transmission
   2.11. Shift of wheels
   2.12. Check and replacement of hoses in a motor compartment
   2.13. Check, adjustment and replacement of belts of a drive of hinged units
   2.14. Check and adjustment of turns and quality of a mix (FROM) idling
   2.15. Check of a condition and battery charging
   2.16. Check and replacement of candles
   2.17. Check of high-voltage wires, begunka and distributor covers
   2.18. Check of level of oil in a manual transmission
   2.19. Check of level of oil in the main transfer
   2.20. Check and adjustment of gaps in valves (except the M40 engine)
   2.21. Draft of a butterfly valve
   2.22. Replacement of the air filter
   2.23. Check of fuel system
   2.24. Check of system of cooling
   2.25. Check of an exhaust system
   2.26. Check of shock-absorbers, suspension bracket and steering
   2.27. Check of covers of semi-axes
   2.28. Check of brakes
   2.29. Check of brushes of screen wipers
   2.30. Liquid replacement in automatic transmission and the filter
   2.31. Cooling system – replacement of liquid and washing
   2.32. Replacement of the fuel filter
   2.33. Oil replacement in a manual transmission
   2.34. Oil replacement in a case of the main transfer
   2.35. Check of system of catching паров gasoline (EVAP system)
   2.36. Installation of the light alarm system of need of servicing
   2.37. Replacement of a gear belt
+ 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. Good advice


2.13. Check, adjustment and replacement of belts of a drive of hinged units


Characteristic types of wear of wedge-shaped belts
1. Cracks

2. Zamaslivaniye

3. Always check a belt condition from the inside

4. Brightness

Check of a tension of a belt

1. Deflection

2. The ruler should be perpendicular to whetstone

3. Whetstone

4. Ruler

The quantity of belts of a drive depends on a car complete set. Belts have wedge-shaped section and are used for a drive of the generator, the power steering, the pump of cooling liquid and the conditioner. One belt can be used for a drive of several units.

Open a cowl and check fingers a condition of belts from two parties, overwinding belts (see fig. Characteristic types of wear of wedge-shaped belts).

Check a belt tension on deflection size in the middle between pulleys (see fig. Check of a tension of a belt). If distance between centers pulleys of 180-280 mm the deflection has to be 6 mm, and at distance between centers 300–400 mm the deflection should be 13 mm.

1. The belt is regulated by moving of the corresponding unit in arm grooves (if the belt is connected to two units, one of these units moves also).
2. Moving of the unit is provided with an adjusting bolt concerning an axis. These bolts it is necessary to weaken and displace the unit. On a part of cars adjustment of a tension is provided with rotation of an adjusting bolt after an otpuskaniye of a lock bolt.
3. Having released bolts, displace the unit in the necessary party, having pulled or having released a belt, tighten bolts, check a tension, and if the belt is adjusted correctly, bolts tighten.


For replacement of a belt execute the same preliminary procedures, as for adjustment then remove a belt from pulleys. All belts are recommended to be changed at the same time. Before removal designate each belt and the corresponding pulley.

At acquisition compare a new belt to the replaced.

After run of the first several hundred kilometers check a belt tension.