Unwittingly Xia Lang has been used for 4 years, more than 70,000 kilometers, usually use very cherish, a few days ago the gas is particularly hot, the car waiting for the traffic lights when the air conditioning becomes weak, the car runs back to normal and very cold. On two occasions, the air conditioner failed after the car was exposed to the sun, and it was only after driving for about 5 kilometers that it felt cool. At that time, I didn’t pay attention to the occasional phenomenon. As a result, there was a clicking noise while driving, and when the AC was turned on, the AC was turned off. After ringing and then snoring, there was no sound at all. I opened the cover of the engine and found that the edge of the pulley of the air conditioning compressor was turning, but the core in the middle was not turning. Because of the compressor cylinder, the belt pulley is overloaded and protected, and the belt is not worn off because of the compressor cylinder, which prevents it from breaking down halfway.
Over the next few days, I went online to find information, buy compressors and fluorine tools. Complain about JS, which sells compressors online. Many models of Volkswagen share the same type of compressor, but JS quotes the same compressor at different prices according to the model. The price difference is hundreds of yuan. In fact, the compressors are all the same. Later, I went to the local physical store to buy it, which was cheaper than the online store. Fluorine was bought by JD.com himself, and I dare not buy it from a third-party seller because there are too many fakes in R134a. 300 grams of a bottle is only 26 yuan, very cheap, there is no need to worry about the price, bought 3 bottles. The new compressor has its own snow seed oil, so it doesn’t buy snow seed oil.
More than 70,000 kilometers, since the bottom guard has been removed, the gearbox oil has been changed by the way. After making a plan, we will take out the 5-liter DV6 gearbox oil stored a few years ago, but I don’t know where the gearbox oil filter has been put. I can’t find it, so this time I just change the oil instead of the filter element. The filter element is installed on the gearbox. It can be changed only when the filter element is found. Then I went online and bought an oil change connector, a pvc hose and a 24mm inner hexagonal batch head. I refit the pump into an oil injector after using the empty cleaning bottle.
The fluorine must be released before removing the broken compressor, and the pressure value of the high and low pressure pipe must be recorded with the mobile phone before it is removed, which can be used as a reference for the amount of fluorine added. It is very simple to remove the compressor, 3 fixed screws, 2 high and low pressure pipe screws, just screw it. After studying the compressor, it is found that the variable solenoid valve is electrically controlled, and the pulley rotates with the engine. As long as the engine starts, the solenoid valve filter screen is very fine and easy to clog. If the blockage leads to sudden cold and heat, you can clean the solenoid valve filter screen without replacing the solenoid valve.
There is a cylinder containing desiccant next to the condenser. Open the lid and pull out the desiccant. Immediately after taking out the desiccant, the desiccant is packed in a bag to prevent the desiccant from absorbing moisture from the air. There is a filter under the desiccant, which is pulled out and washed with a toothbrush. When you put it back, remember to put the desiccant back in another direction, with the clean end down.
Re-inject fluorine after replacing the compressor, there is no need to vacuum, because there is desiccant in the air conditioning system, there is no need to worry about the air moisture in the pipe, unless the pipe is sprayed with a large amount of water by an unscrupulous repair shop.
Fluorine must be kept in mind: both high and low pressure tubes can be charged, as long as the high pressure tubes must be charged in the engine flameout state. The low-pressure tube must be charged during the start-up of the engine.