Condition check, adjustment of a tension and replacement of driving belts. BMW the 5th E28/E34 series (from 1981 to 1993 of release)
Repair of BMW E28 and series E34 from 1981 to 1993
1. Cars of the BMW brand of 5-series
2. Engine
3. Cooling system
4. Power supply system
5. Ignition system
6. Control systems of the engine and decrease in toxicity of the fulfilled gases
7. System of production of the fulfilled gases
8. Coupling
9. Manual box of gear shifting (RKPP) and automatic transmission (AT)
10. Transmission line
11. Steering and suspension bracket
12. Brake system
13. Body
14. Control body sizes
15. Heater and air conditioner
16. System of onboard electric equipment
17. Routine maintenance of the car
17.1. Schedule of routine maintenance
17.2. Introduction
17.3. Current leaving
17.4. General information on control
17.5. Check of levels of liquids
17.6. Check of a condition of tires and pressure in them
17.7. Replacement of impellent oil and oil filter
17.8. Check of level of liquid of system of hydrostrengthening of a wheel
17.9. Check of level of lubricant liquid of automatic transmission
17.10. Rotation of wheels
17.11. Check of a condition and replacement of hoses of an impellent compartment
17.12. Condition check, adjustment of a tension and replacement of driving belts
17.13. Check and adjustment of turns of idling of the engine and level WITH
17.14. Check of a condition of the battery, care of it and charging
17.15. Check and replacement of spark plugs
17.16. Check and replacement of candle VV of wires, covers and distributor begunka
17.17. Check of level of oil in a manual box of gear shifting
17.18. Check of level of lubricant liquid of differential
17.19. Check and adjustment of gaps of valves
17.20. Check and greasing of draft of a drive of a butterfly valve
17.21. Replacement of the air filter
17.22. Check of fuel system
17.23. Check of functioning of system of cooling
17.24. Check of a condition of system of production of the fulfilled gases
17.25. Check of a condition of components of a suspension bracket and steering
17.26. Check of a condition of protective covers of power shafts
17.27. Check of brake system
17.28. Check of a condition and replacement of brushes of screen wipers
17.29. Replacement of transmission liquid and AT filter
17.30. Plums, washing and filling of system of cooling
17.31. Replacement of the fuel filter
17.32. Replacement of transmission oil of manual transmission
17.33. Replacement of lubricant liquid of differential
17.34. Check of functioning of system of catching паров gasoline (EVAP)
17.35. Control of an alarm lamp of the notification about approach of term of planned maintenance (SPTO)
17.36. Replacement of a distributive belt of the engine
18. Size table and adjusting data
19. Schematic electric circuits
20. Governing bodies and operation receptions
21. System of onboard diagnostics - a principle of functioning and codes of malfunctions
 








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17.12. Condition check, adjustment of a tension and replacement of driving belts

Two times year or each 10 000 km of run (that will come earlier)

Condition check

The driving belts sometimes called by V-shaped belts of section or simply ventilyatorny belts, are in a forward part of the engine and play important role in operation of the car and its separate components. Because of features of a material and operating conditions driving belts fail after a while, and consequently their condition it is necessary to check and regulate periodically effort of a tension in order to avoid serious damages of the engine.

The quantity of the belts used on the concrete car, depends on the units established on it and systems. Driving belts are applied to actuating of the generator, the steering pump, the water pump and the compressor of central air of air. Depending on an arrangement of pulleys one belt can put in action at once some components.

Switch off the engine, open a cowl and find various driving belts in a forward part of the engine. Fingers (and using a small lamp if it is necessary) walk on all length of each belt, feeling them on existence of cracks and stratifications. Also check, whether is not present on belts of attritions and zapolirovanny sites to shine. Each belt should be examined from both parties that means need of its perekruchivaniye for check of a condition of seamy side.
The tension of a belt is checked by strong pressing on it by a thumb and definitions of degree of its deflection. Size of a deflection measure by a ruler. The rule of a thumb says that if the distance between centers pulleys makes from 180 to 280 mm, the size of a deflection should equal 6 mm. If the distance between centers pulleys is in limits between 300 and 400 mm, the deflection should be 13 mm.

Adjustment

In need of adjustment of a tension of a belt towards its increase or reduction it becomes by moving of the unit given by a belt on its fixing arm. In that case when the belt puts in action more than one unit, usually for its adjustment there is enough shift only one of them.

 PERFORMANCE ORDER

  1. Each unit has an adjusting bolt and an axial bolt. For its moving on an arm it is necessary to weaken both bolts slightly. For some units the tension of a driving belt can be regulated, turning an adjusting bolt after weakening of a lock bolt.
  1. After both bolts are weakened, displace the unit from the engine for increase in a tension of a belt, or to the engine for its easing.
  2. Fix the unit in new situation and check a belt tension. If further adjustment is not required, twirl both bolts and once again check a tension. If changed nothing, tighten bolts finally.

Often for unit moving for the purpose of adjustment of a tension of a belt it is necessary to use the lever. If it is necessary, act extremely carefully not to damage the moved unit or an element used as a point of support.

Replacement

For replacement of a belt follow the instructions provided above on adjustment, but thus remove a belt from pulleys.

In certain cases you should remove more than one belt because of features of their arrangement in a forward part of the engine. Therefore, and also because belts tends to fail at the same time, to replace them too best of all at the same time. Mark each belt and a flute corresponding to it on a pulley correctly to establish new belts.

Upon purchase of new belts it is convenient to take with itself old to have possibility directly to compare them on length, width and design.

Check a tension of new belts after run of several hundred kilometers.


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17.13. Check and adjustment of turns of idling of the engine and level WITH