Removal and installation of the executive cylinder of coupling. 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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8.6. Removal and installation of the executive cylinder of coupling

Hydraulic liquid is poisonous. It also well dissolves paint. Be careful, do not allow liquid hit on open sites of a body or in eyes. Hold near at hand rags for collecting the poured liquid, and in case of hit it on the painted surfaces immediately wash away liquid plentiful amount of cold water.

Removal

Before the beginning of this procedure contact local shops of auto parts concerning set acquisition for repair or the new executive cylinder. Depending on existence and cost of necessary details make the decision, whether it is necessary to repair the cylinder, or it is better to replace it. If you decided to repair the cylinder, follow the instructions attached to a repair set.


 PERFORMANCE ORDER

  1. Uncover the tank with brake liquid (for models with left foreign management) or the tank with hydraulic liquid of coupling (for models with right-hand management) and by means of a syringe remove liquid from the tank. On models with left foreign management level of liquid should be lower than connection of the brake line with the main cylinder.
  2. To Poddomkratta the car and reliably establish it on axial support.
  3. Wipe area round shtutserny connection of the hydraulic line and disconnect the line from the executive cylinder. In order to avoid union damage whenever possible use a special key. Hold near at hand rags for collecting the poured liquid. To Zakuporta the open end of the line that liquid did not follow and the line did not become soiled. On models where access to the executive cylinder is complicated, before a detachment of the union it is better отболтить the executive cylinder.
  4. Give nuts of fastening of the executive cylinder and remove the cylinder from transmission.

Standard executive cylinder of hydraulic system of coupling

1 — the Hydraulic line
2 — Fixing nuts
3 — the pumping Gate
  1. Examine a plastic tip of a pusher and the inclusion lever on existence of signs of wear. The pusher should be worn-out only on the end. Wear signs on the lever should be only in deepening for a pusher. Existence of signs of wear on lateral faces of a pusher or on the lever in other places except deepening specifies that the pusher is debalanced.
  2. Examine the executive cylinder, checking, whether there are no leaks. If the pusher epiploon proceeds, replace the executive cylinder. At installation of the new cylinder make sure that it suitable type. On models with a usual moss wheel the executive cylinder with diameter of 20.64 mm is used; on models with a flywheel, two-piece, use the cylinder with diameter of 22.2 mm.

Installation

 PERFORMANCE ORDER

  1. Installation make upside-down. Do not forget to apply a thin film molybdenum-дисульфидной greasings on a plastic tip of a pusher and track, that the tip correctly rose in deepening in the inclusion lever. Tighten nuts of fastening of the executive cylinder with demanded effort.
  2. Fill the tank with fresh liquid and pump over hydraulic system of coupling (see. Section Pumping of hydraulic system of coupling).


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8.7. Pumping of hydraulic system of coupling