E39 series BMW 5

since 1996-2001 of release

Repair and car operation



E39 BMW
+ Introduction
+ Maintenance instruction
+ Current leaving and service
+ Engine
+ Systems of cooling, heating
+ Power supply system and release
+ engine Electric equipment
+ Manual transmission
+ Automatic transmission
- Coupling and power shafts
   - Coupling
      Removal, installation and coupling check
      Air removal from a coupling hydraulic actuator
      Removal and installation of the mechanism of switching off of coupling
      Removal and installation of the working cylinder of coupling
   + Power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment
+ electric equipment Schemes
+ System of onboard diagnostics


Heavy Metal & Reflected



Air removal from a coupling hydraulic actuator

It is necessary to remove air if the pedal of coupling does not come back or comes back to a starting position slowly from hydrosystem of a drive of coupling, unhooking of transfer occurs unsatisfactorily or if the hydrosystem was opened.

As the hydrosystem of coupling works at brake liquid, it is necessary to observe the corresponding requirements provided in Head Brake system.

At the process of removal of air described here without use of the special device in system there can be an air quantity. A sign of it is existence of characteristic noise and unsatisfactory unhooking of transfers. In this case it is necessary to remove air from system on HUNDRED with use of the special device.


 PERFORMANCE ORDER

1. Remove the bottom guard of an impellent compartment, address to the Section Removal and installation of the bottom guard of an impellent compartment.
2. Check level of brake liquid in the tank. If necessary add liquid before Max marking, address to the Section Check of levels of liquids.

3. Remove a cap from the union of pumping of air (the shooter on an accompanying illustration) on the working cylinder. Put on a transparent hose the union.

4. Carefully release an approach to the union. The otvorachivaniye of the union needs a cap key not to damage a shestigrannik.
5. Lower the free end of a hose in capacity with brake liquid to exclude an air podsasyvaniye.
6. Ask the assistant to press a coupling pedal about 10 times against the stop and to leave it pressed.
7. In this situation open the union (3). Brake liquid will start to follow. When following liquid will cease to contain air vials, wrap the union.

Level of brake liquid in the tank should not go down too strongly. For this purpose add liquid.

8. Release a coupling pedal. Again about 10 times press a pedal and leave it in such situation. This process repeat so many time, how many it is necessary in order that air did not leave any more. Thus constantly add in system new liquid.
9. Wrap the union on the working cylinder. Remove a hose and put on a cap.
10. Lower the car on wheels.
11. Fill in in system brake liquid to Max mark.
12. Check work of brake system and coupling.

Air removal by means of the special device

In repair trucks air from hydrosystem of coupling is removed, as a rule, by means of the special device. The device creates superfluous pressure of liquid in system.

 PERFORMANCE ORDER

1. Unscrew fastening bolts on the tank of brake liquid. Take out the tank.
2. Attach the device for air removal according to the instruction.
3. Put on the union of removal of air a hose. The end of a hose lower in capacity.
4. Open the union and keep it in such situation, air vials will not cease to be allocated yet. The union close.
5. Remove the device.
6. Slowly about 10 times press a coupling pedal against the stop and again release it.
7. Remove the working cylinder from a check point. A hydrowire do not disconnect, address to the Section Removal and installation of the working cylinder of coupling.

8. Open the union of pumping of air. Press against the stop on a rod (1) working cylinder so that air vials any more were not allocated. Thus the union should look upward. Close the union and let's to a rod come back slowly back. Address to an accompanying illustration.

It is impossible to press a coupling pedal at the removed working cylinder.

9. Establish into place the tank of brake liquid. Fill in liquid to Max mark. Close the tank a stopper.
10. Establish a box of the filter of clean air.