Receiver Dryer: Service and Repair

WM 875519 Removing and installing desiccator

Tools






Preliminary work

Remove refrigerant by suction. -> 870317 Evacuating and filling in refrigerant - section on "draining" Service and Repair

Removing desiccator

WARNING

Danger of injury. Safety regulations should be strictly observed when working on air-conditioned vehicles and dealing with refrigerant.

-> 80 Safety regulations for working on air-conditioned vehicles and dealing with refrigerant R134a
-> 80 Safety regulations for extraction and filling systems
-> 80 Instructions for repairing air-conditioning systems and storing spare parts

Information

- The dryer is in the capacitor, on the right-hand side.

1. Remove air filter lid. -> 242519 Removing and installing air cleaner housing - section on "Removing" Service and Repair.





Removing air filter lid

2. Unscrew rubber grommet on condenser -arrow A- and remove upwards -arrow B-.





Removing rubber grommet on condenser

3. -A- Using a slide hammer kit NR.168 , push plug down and turn Seeger ring until accessible from air filter.





Removing Seeger ring

4. Using Seeger ring pliers NR.70 remove Seeger ring -B-.
5. Screw hexagonal screw into plug and pull plug out in upward direction using slide hammer set NR.168.





Pulling out plug in upward direction

6. Lift dryer out in upward direction.





Lifting dryer out in upward direction

Installing desiccator

Information

- The dryer 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 O-ring on plug and wet with refrigerant oil.
2. Push dryer into condenser.





Pushing dryer into condenser

3. Position plug and push down with a slide hammer set NR.168.





Positioning and pushing down plug

4. Install the snap ring using snap ring pliers NR.70.





Installing the snap ring

5. Place rubber stopper on plug -arrow A- and screw in -arrow B-.





Placing and screwing in rubber stopper on plug

6. Install air filter lid. -> 242519 Removing and installing air cleaner housing - section on "Installing" Service and Repair
7. Determine the quantity of the refrigerant oil and fill up again with refrigerant oil (volume removed by suction + 20 cm 3).

Subsequent work

Fill in refrigerant. -> 870317 Evacuating and filling in refrigerant - section on "filling" Service and Repair