Subaru Legacy/Outback

1999-2003 of release

Repair and operation of the car



Subaru of Legasi, Autbek
+ Cars Subaru Legacy, Outback
+ Operation manual
+ Routine maintenance
+ Engine
- Cooling systems, heating
   Specifications
   + engine Cooling system
   - Systems of heating/ventilation/air conditioning
      Removal and installation of deflectors and air ducts
      Removal and installation of resistive assembly of a driving electric motor of the fan of a heater
      Removal, check and installation of a driving electric motor of the fan of a heater
      Removal and installation of the control panel functioning of systems of heating/ventilation/air conditioning
      Removal and installation of assembly of a heater
      Removal and installation of the heat exchanger of a heater
      Check of serviceability of functioning and service of systems of heating and air conditioning
      The K/V compressor - a design and the principle of functioning
      The K/V condenser - a design and the principle of functioning
      Receiver dehumidifier To/in - a design and the principle of functioning
      Pressure sensor switch To/in - a design and the principle of functioning
      The K/V evaporator - a design and the principle of functioning
      The K/V broad valve - a design and the principle of functioning
      Check of a state, removal and installation of the compressor of system To/in
      Removal and installation of the condenser of system To/in
      Removal and installation of a receiver dehumidifier of system To/in
      Removal and installation of the inlet block of system To/in, replacement of the evaporator
      Replacement of connecting hoses of a refrigerator path
      Check of serviceability of functioning of the sensor switch of pressure
      Removal and installation of information sensors of system of automatic central air (climate control)
+ Power supply system and release
+ Electric equipment of the engine
+ Manual box and differential
+ Automatic transmission
+ Coupling
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment




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The K/V broad valve - a design and the principle of functioning

Design of the broad valve

1 — the Thermosensitive element
2 — the Diaphragm
3 — From the evaporator (low pressure)
4 — the Throttle

5 — To the evaporator (low pressure)
6 — the Valvate ball
7 — To the compressor
8 — From a receiver dehumidifier


The design of the broad valve is presented on an illustration.

The broad valve is connected both to inlet, and to final to ports of a dilator. The valve serves for the transformation arriving to it from the receiver dehumidifier which is under a high pressure of liquid coolant in the suspension of low pressure coming to the evaporator. The coolant cooled, being under low pressure easily evaporates, taking away heat from the air filling salon.

The valve carries out the task after transformation of a working body of system due to automatic control of a coolant consumption according to the current thermal loading.

Temperature of coolant is controlled by the special thermosensitive element which is built in the low pressure canal of the broad valve. Management of account characteristics is made by means of the ball valve which is settling down in high-pressure part of assembly.

At increase in thermal load of system coolant temperature at the exit of the evaporator rises that conducts to increase of pressure of P1 around installation of a thermosensitive element. As soon as the size of the effort developed by pressure of P1 becomes higher than the sum of the efforts developed by P2 pressure at the exit of the evaporator and a spring (F) i.e. the condition is satisfied: P1> P2 + F, occurs the push-up down diaphragms leading to rise over the saddle of a valvate ball and corresponding increases in a consumption of coolant.


At decrease in thermal loading the return picture takes place.