Check of work and replacement of the switch of coupling (where it is provided). 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
8.1. General information
8.2. Description and coupling check
8.3. Removal and installation of the main cylinder of coupling
8.4. Adjustment of a pedal of coupling
8.5. Check of work and replacement of the switch of coupling (where it is provided)
8.6. Removal and installation of the executive cylinder of coupling
8.7. Pumping of hydraulic system of coupling
8.8. Removal, survey and installation of components of coupling
8.9. Diagnostics of malfunctions of 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
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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8.5. Check of work and replacement of the switch of coupling (where it is provided)

The switch of coupling located in the top part of a pedal of coupling, prevents engine start at not squeezed out pedal. The switch being a part of a chain of a starter, in normal situation will open. When squeeze out a coupling pedal, it presses on a small pusher in the switch, closes a chain and includes a starter.

If the engine of the car is started without pressing a coupling pedal, it means that the switch either is faulty, or is incorrectly adjusted. To check its work, disconnect the electric socket and connect an ohmmeter to socket plugs. The chain should be not closed at the released pedal (a pedal above) and is closed at the squeezed-out pedal. If the switch does not work thus, try to adjust it. If it is not possible, replace it.


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8.4. Adjustment of a pedal of coupling
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8.6. Removal and installation of the executive cylinder of coupling