Receiver Dryer: Service and Repair

WM 875555 Replacing desiccator

Preliminary work

1. Drain refrigerant. -> 870317 Draining and filling refrigerant - section on "Draining" Service and Repair
2. Remove cover for front lock support. -> 703919 Removing and installing cover for front lock support - section on "Removing" 703919 Removing and installing cover for rear lock support

Removing desiccator

WARNING

Refrigerant

- Danger of freezing

-> Avoid contact with refrigerant.
-> Wear personal protective gear.
-> Observe the safety regulations for working on air-conditioned vehicles and dealing with refrigerant.
-> Observe the safety regulations for extraction and filling systems.
-> Observe the instructions for repairing air conditioning systems and storing spare parts.





Installation position of desiccator

1. Unscrew stopper -1- on the condenser and remove it in an upward direction.





Opening stopper

2. Use pliers to pull the desiccator -2- up out of the condenser.





Desiccator

Installing desiccator

WARNING

Refrigerant

- Danger of freezing

-> Avoid contact with refrigerant.
-> Wear personal protective gear.
-> Observe the safety regulations for working on air-conditioned vehicles and dealing with refrigerant.
-> Observe the safety regulations for extraction and filling systems.
-> Observe the instructions for repairing air conditioning systems and storing spare parts.

Information

- The desiccator must be replaced if the system suffers from operational faults (e.g. accident damage or air-conditioning system depressurised)!

- Used refrigerant oil extracted from a previously run A/C unit must not be re-used!

1. Replace both O-rings -3- on the stopper -1- and coat them with refrigerant oil.





Stopper

2. Slide desiccator -2- into the condenser.





Desiccator

3. Place stopper -1- on the condenser and tighten it.





Tightening stopper

Subsequent work

1. Install cover for front lock support. -> 703919 Removing and installing cover for front lock support - section on "Installing" 703919 Removing and installing cover for rear lock support
2. Fill in refrigerant. -> 870317 Draining and filling refrigerant - section on "Filling" Service and Repair