BMW 3 Series E30

since 1983-1994 release

Repair and operation of the car



BMW E30
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engine
+ 4. Cooling system
+ 5. Heating and ventilation
+ 6. Fuel system
+ 7. Exhaust system
- 8. Transmissions
   + 8.1.2. Specifications
   - 8.2. Automatic transmission
      8.2.2. Specifications
      8.2.3. Diagnostics of automatic transmission
      8.2.4. Draft of the selector of transmission
      8.2.5. kick cable - down - the mode
      8.2.6. The blocking backing signal switch / switch
      8.2.7. Removal and installation of transmission
      8.2.8. Epiploons of automatic transmission
      8.2.9. "Automatic machine"
+ 9. Coupling
+ 10. Brake system
+ 11. Running gear
+ 12. Body
+ 13. Electric equipment
+ 14. Useful tips



8.2. Automatic transmission

8.2.1. Introduction

GENERAL INFORMATION

On early models 3-speed ZF 3HP 22 automatic transmissions are installed.

Later models are completed with 4-speed ZF 4HP automatic EN transmissions with electronic change of transfers.

Scheme of electronic control by automatic transmission 4HP EH 22 EH
1. Selector
2. The switch of programs (is on
body floor tunnel tray)
3. The kick switch - down - the mode (under a pedal of the drive of a butterfly valve)
4. Control unit
5. Control lamp of refusal
6. Switch of a butterfly valve
7. Stream speed sensor
8. Sensor of speed of rotation of the crankshaft
9. Case of valves

Automatic transmission of ZF 4HP 22
1. Hydrotransformer
2. Hydrotransformer case
3. Secondary shaft
4. Transmission case

The device of 4-speed automatic transmission of ZF 4HP 22 (the device of 3-speed transmission is similar)
1. Turbine
2. Case
3. Pump wheel
4. Starter
5. Epiploon
6. Coupling
7. Planetary gear wheels (1–3 transfers)
8. Planetary gear wheels (4 transfers)
9. Centrifugal regulator
10. Odnotstoronny coupling
11. Odnotstoronny coupling of 1 transfer
12. Odnotstoronny coupling 2 of transfer
13. Coupling
14. Pump of transmission liquid
15. Coupling
16. Drive plate
17. The blocking coupling

Repair of transmission with dismantling is carried out only in car service.

It is independently possible to remove and establish transmission, and also to execute certain types of works on leaving, adjustment and diagnostics.

When replacing transmission be guided by data on the plate strengthened on the left side of a case, directly behind the selector.

The plate with codes of identification of automatic transmission

Mechanism of manual control by automatic transmission
1. Pin
2. Screw
3. Button
4. Spring
5. Selector
6. Selector clamp
7. Lock
8. Mechanism case
9. Lower lever
10. Plug
11. Axis
12. The lever of the drive of valves (on a transmission case)
13. Draft of the selector of transmission
14. Bracket
15. Sound-proof laying
16. Switch of provisions Neutral/Park/backing and index of provisions of the selector