1999-2003 of release
Repair and operation of the car
Subaru of Legasi, Autbek
+ Cars Subaru Legacy, Outback
+ Operation manual
+ Routine maintenance
- Cooling systems, heating
+ 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
+ Brake system
+ Suspension bracket and steering
+ Onboard electric equipment
Check of serviceability of functioning and service of systems of heating and air conditioningThe scheme of an arrangement of components of system To/in
The scheme of an arrangement of components of central air is shown on an illustration.
The listed below control checks have to be made on a regular basis for the purpose of maintenance of the air conditioning system in good repair:
a) Check a condition of a belt of the drive of the compressor. In case of detection of defects or signs of wear make replacement (see the Head Routine maintenance);
b) Check effort of a tension of a driving belt, in case of need make the corresponding adjustment (see the Head Routine maintenance);
c) Check hoses of a refrigerator path for existence of cracks, swellings, signs of hardening and aging of rubber, estimate a condition of nipple connections. Replace defective components;
d) Check condenser heat exchanger plates for existence of the remains of insects, old leaves and other garbage which got stuck between them. In case of need clean gaps a thin brush, or blow them compressed air;
e) Check the level of a charge of system.
The air conditioning system has to turn on at least for 10 minutes at least once a month (even in a winter season). Long inaction To/in leads to hardening and failure of sealing rings and cuffs of a connecting path.
The leaks taking place in a path in the best way are shown at increase in working parameters of system (temperature and pressure), - leave the conditioner included for 5-10 minutes at the working engine. Sources of leaks can be revealed on oil poteka.
In view of complexity of a design of system and need of use of the special equipment, its service, deep diagnostics and recovery repair lie outside qualification of the average amateur mechanic and have to be made in the conditions of a workshop of car service. Only the elementary checks and replacements which are listed below in the present Section get to competence of the owner of the car.
If the system does not function at all, check a condition of the corresponding safety lock and the relay in the assembly block located in a motive compartment of the car.
To/in decrease in level of a charge of refrigerator oil is the most typical cause of infringement of serviceability of functioning. The elementary checks given below will allow to reveal signs of decrease in level of coolant quickly.
Check of level of a charge of coolant
Warm up the engine up to the normal working temperature.
Include To/in on the maximum refrigerating capacity. Choose the maximum high-speed mode of the fan. Open doors to avoid cyclic shutdowns of system when cooling of the air volume closed in salon.
Operation of the coupling of coupling of the K/V compressor is followed by distinctly heard click after which the central part of the coupling has to start rotating. After temperature of system reaches working value, feel two tubes connected to the evaporator on a partition of a motive compartment.
According to instructions of manufacturers connect a charging set to LOW PRESSURE part of the refrigerator highway.
Close the gate on a transitional nozzle and screw the last on a barrel head, previously having made sure available a sealing ring / rubber laying.
Warm up the engine up to the normal working temperature and include K/V. Track that the hose of a charging set did not adjoin to blades of the fan of the cooling system and other moving components in a motor compartment.
Rotation of a valve nozzle pierce a barrel head, having opened thereby coolant supply (the characteristic sound of the escaping gas has to be heard). In the course of all charging discipline a barrel vertically, from time to time stirring up it. Charging should be interrupted when temperatures of inlet and final tubes of the evaporator are compared. Between series of charging do the pause necessary for stabilization of system.
In the presence of near at hand exact thermometer enter it in via the deflector into the central air duct To/in and watch temperature of the air given to salon.
When the barrel becomes empty, block the gate and disconnect a hose from the low pressure union of system. At once put on a dustproof cap the union.
Disconnect a valve nozzle from a barrel, in case of need rearrange it on the second barrel and continue gas station. Upon completion of procedure put an unfinished barrel vertically on a rack and as required use it for recharge of system.
System of heating
If the heater does not provide due heating of the air given to salon, one of the following can be the reason of such refusal:
a) The thermostat is jammed in open situation that does not allow the cooling liquid of the engine given to the heat exchanger of a heater to heat up to normal temperature. Replace the thermostat (see the Section Check of Serviceability of Functioning and Replacement of the Thermostat);
b) Violation of passability of a cooling path that blocks supply of cooling liquid in the heater heat exchanger takes place. Feel the hoses connected to branch pipes on a back partition of a motive compartment. Both hoses have to be hot, - opposite testifies to violation of passability of a path (hoses, the heat exchanger, or the operating heater gate are blocked). Disconnect hoses and make obratnopotochny washing of the heat exchanger. Wash out also both hoses;
c) If it is not possible to restore passability of the heat exchanger by washing, it is necessary to make its replacement (see the Section Removal and installation of the heat exchanger of a heater).
If the speed of rotation of the fan of a heater does not correspond to the chosen position of the corresponding switch on the control panel of system, check a condition of a safety lock, a connecting electrical wiring, the relay, switch and resistive assembly.
If the air outlet via deflectors is absent at all, take the following actions:
a) Include ignition and activate the heater fan. Press an ear to the deflector and try to define aurally, whether the driving motor functions;
b) If the sounds confirming serviceability of functioning of the motor are absent, and resistive assembly as it should be, it is necessary to replace the motor (see the Section Removal, check and installation of a driving electric motor of the fan of a heater).
Moistening of a carpet on a floor under the heater heat exchanger, or a steam-out via deflectors of air ducts is told about leakages of the heat exchanger. Remove the heat exchanger (see the Section Removal and installation of the heat exchanger of a heater) and replace it new (the heater heat exchanger is not subject to recovery repair).
Check passability of the drainage hose going from assembly of the heater/evaporator and laid the spravy party of a partition. Blocking of this hose can lead to a steam-out from deflectors of air ducts at inclusion of a heater.
Elimination of smells of the air conditioning system
The unpleasant smells often arising at inclusion To/in are caused by formation of colonies of a mold on evaporator heat exchanger plates. The warm damp environment creates favorable conditions for emergence and development of fungal microorganisms.
Access to the evaporator heat exchanger on the majority of models is extremely limited. The procedure of the guaranteed full removal of a mold which is carried out in the conditions of a workshop of car service is rather labor-consuming, takes away a lot of time and demands application of strong disinfectants. In principle, rather effective processing can be executed and in house conditions by own forces of the owner of the car.
The special disinfectants in aerosol packaging intended for service of air conditioning systems can be got practically in any shop of automobile accessories. It is necessary to remember that the price of means is usually directly proportional to its efficiency. Switch system in the mode of air circulation and for ten minutes turn on the heater fan on the maximum speed. For the purpose of drying of system include heating on the maximum intensity. Disconnect an electrical wiring from the compressor for the purpose of prevention of its operation.
Giving of means is usually carried out through a long hose. Remove resistor assembly of an electric motor of the drive of the fan of a heater (see the Section Removal and installation of resistive assembly of a driving electric motor of the fan of a heater), enter a nozzle of the giving nozzle into the formed opening and displace it to the left, having directed on the evaporator heat exchanger. Giving of means is carried out according to instructions of his manufacturer. Try to process all surface of the heat exchanger most fully. Duration of each operation cycle and intervals between series have to be specified on a container label.
The best preventive measure against emergence of colonies of a mold in the heat exchanger of the evaporator is regular check of passability of a drainage tube, and also short-term inclusion of the mode of removal of condensate after each distant trip with the working conditioner for the purpose of drying of the evaporator.