Subaru Legacy

since 1990-1998 release

Repair and operation of the car

Subaru of Legasi
+ 1.1. Identification numbers
+ 2. Maintenance
+ 3. Engines
+ 4. Heating, ventilation
+ 5. Fuel system
+ 6. Exhaust system
+ 7. Systems of start, ignition
- 8. Transmissions
   + 8.1. Mechanical transmission
   - 8.2. Automatic transmission
      8.2.1. Introduction
      8.2.2. Technical characteristics
      8.2.3. Diagnostics of leak of operational liquids
      8.2.4. Lever and cable of gear shifting
      8.2.5. Cable of a choice of transfers
      8.2.6. Switch of blocking of a starter and light of a backing
      8.2.7. Replacement of sealing rings
      8.2.8. Check and replacement of support of a transmission
      8.2.9. Adjustment of a brake tape
      8.2.10. Removal and installation of a transmission
+ 9. Coupling, shaft
+ 10. Brake system
+ 11. Suspension bracket
+ 12. Steering
+ 13. Body
+ 14. Electric equipment


8.2. Automatic transmission

8.2.1. Introduction


Because of complexity of an automatic transmission and need of use of special adaptations for the majority of operations on service only the description of operations of the general diagnostics, routine maintenance, adjustment and removal and installation of a transmission is provided in this chapter.

The transmission represents very difficult unit, and repair it it is necessary to make in a specialized workshop. Before repair of a transmission it is necessary to define nature of malfunction which can be electric, mechanical or hydraulic.

Do not remove a transmission from the car for repair before not malfunctions as the majority of tests demands that the transmission was in the car are professionally revealed.

General diagnostics

Indistinct work of an automatic transmission can be caused by five main reasons:

 – unstable operation of the engine;
 – wrong adjustment;
 – misoperation of hydraulic system;
 – mechanical damages;
 – malfunctions in the computer or in its alarm chains.

Diagnostics always should be begun with the simplest checks of level of liquid and its state, adjustment of levers of gear shifting and management of a butterfly valve. Then it is necessary to make a control trip for definition of, whether the problem is fixed or additional diagnostics is required. More detailed diagnostics has to be made at service station.

Preliminary control

1. Make a control trip on distance some kilometers for warming up of a transmission.
2. Check liquid level. If the level of liquid is lower than norm, add liquid to the necessary level, and then check for existence of leaks. If level too high, merge excess amount of liquid, and then check the merged liquid for availability in it of cooling liquid. Availability of cooling liquid from the engine in an automatic transmission indicates malfunction in internal walls of a radiator which separate cooling liquid from the transmission. If liquid in a transmission is made foam, merge it and fill in new liquid in a transmission, and then check existence in transmission liquid, cooling liquid.
3. Check turns of idling of the engine.
4. Check a cable of management of a butterfly valve for freedom of the course. If it is necessary, adjust it.