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ac expansion valve for my car

Buy Expansion valve for your car - Top quality for a top price

Ac expansion valve for other makes of cars

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Ac expansion valve for cars

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Catalog of Expansion valve air conditioning manufacturer:

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Replace a Spare part Ac expansion valve – a defective one or if the limit of use has been already reached. Find out useful information about Ac expansion valve

Malfunction of the expansion valve
  • the valve temperature sensor failure;
  • violation of liquid refrigerant pressure;
  • damage to the cylinder;
  • needle jamming;
  • damage to the spring.
Symptoms of the expansion valve failure
  • random shutdown of the compressor;
  • unstable operation of the cooling system;
  • low level of forward and suction pressure;
  • too high refrigerant level supplied to the evaporator;
  • frosting on the evaporator tubes;
  • the valve being in an open state for a long period;
  • systematic cooling air bleed.
Causes of the expansion valve faults
  • incorrect adjustment of the valve;
  • blockage of the valve;
  • moisture;
  • mechanical damage;
  • air getting into the air conditioning system.
Diagnostics

For troubleshooting check the pressure change. You should use equipment, which is designed for operating with refrigerant. Connect the station to the socket. Then remove the glove box, install pressure gauges. Then connect two thermometers: near the intake duct and the central grid. Then, open the hood and front doors, run the air conditioner at maximum capacity, set the engine speed to 1,500 rpm. After 10 minutes of operation in this mode it is necessary to take the readings of thetemperature and pressure gauges. Too low or high pressure indicates a malfunction of the valve. Then perform a visual inspection of the expansion valve for the presence of ice and dirt.

Repair and replacement of the expansion valve

Repair of the expansion valve is its washing from contaminants. If there are other faults the part is replaced. To do this, remove the glove box and the evaporator. If necessary, make gas recovery in the station. Then you need to remove the valve, install a new part, pre-lubricated with oil. Install the seals in the reverse order, reinstall the parts.

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