Overall cleaning and maintenance project of Bora MK4 air conditioning system (full version)_vehicles, vehicles

Overall cleaning and maintenance project of Bora MK4 air conditioning system (full version)

September 4, 2024

Overall cleaning and maintenance of air conditioning system

The weather is getting warmer and the temperature is rising, and the air conditioning system in the car also needs maintenance and cleaning. Improve heat exchange efficiency and reduce bacterial growth and odor in air conditioning pipes.

Steps:
1 There is insufficient refrigerant, vacuum and add enough refrigerant, and add half bottle of refrigerant oil (compressor oil)
2 Replace the air conditioning filter element and clean the outer pipe (air inlet to blower)
3. Clean inner piping (blower to evaporator box)
4 Clean the blower and evaporation box (now maintenance shops have visual cleaning tools with a camera to see the situation inside the pipes)
5 External: Clean the air conditioning condenser (external radiator)

J East bought refrigerant online, and Master Liu said that 300g was enough

After evacuating, add enough refrigerant

Remove the outer cover of the air conditioning filter element

Hard-working air conditioning filter element

New filter elements and line cleaners

New and old filter elements

Remove the glove box, be careful not to remove some tenons. You can refer to the homework of other card friends for details

Remove the blower resistor first, and then the blower can slide down from the fixing slot.

Remove the blower resistor first, and then the blower can slide down from the fixing slot.

Black blower, supported by a resistor box below

The internal and external circulation flaps are covered with sponges. It is not recommended to clean them with corrosive liquids, let alone use high-temperature steam for sterilization and disinfection. It only accelerates component aging

Internal and external circulation, with sponge on the flap. It is not recommended to clean it with corrosive liquids, let alone use high-temperature steam for sterilization and disinfection. It only accelerates component aging

Valeo blower, a lot of dust has accumulated on it

Cleaning blower

The cleaned evaporation box revealed a metallic luster

Evaporation box cleaning completed

The last thing is to clean the external air conditioner condenser (radiator) and the condenser of the Bora MK4. You don’t have to remove the front bumper. Pull the center net open and fold it up to see the condenser.

I asked the maintenance shop to blow it with compressed air, which caused a lot of clogging dust and affected heat exchange.

You can also go to the car wash and wash it with water, just pay attention to the water pressure not to be too high and the aluminum fins of the radiator will be deformed by punching!

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Overall cleaning and maintenance project of Bora MK4 air conditioning system (full version)