Receiver Dryer: Service and Repair

WM 875519 Removing and installing dryer (fluid tank)

Technical values





Preliminary work

Preliminary work for dryer

1. Remove cover on left for plenum chamber. -> 852219 Removing and installing cover - removing 85221900 Removing and installing cover
2. Drain refrigerant for air-conditioning system with one air-conditioning unit. -> 870317 Draining and filling in refrigerant - draining

General warning notes

General warning notes for working on the air conditioning system

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.

Tools and materials

Tools for air-conditioning compressor

Air-conditioning service unit, refer to Special Tools, Commercially Available Tools)

Removing dryer (fluid tank)

Removing desiccator (fluid tank)





Installation position

The desiccator (fluid tank) is located under the left plenum chamber cover.
1. Unscrew the fastening nuts -1- on the fluid tank





Removing desiccator

2. Undo fastening screws -2-.
3. Unscrew the fastening clamp -3- and remove the fluid tank upwards.
4. In any case, replace the desiccator.

Installing dryer (fluid tank)

Installing desiccator (fluid tank)

In any case, replace O-rings for the refrigerant lines and wet the new rings with refrigerant oil.

Only install a new desiccator.
1. Position the fluid tank, connect the refrigerant lines and secure with the fastening screws -2-. => M6: 4.5 ftlb.





Installing desiccator

2. Connect the air-conditioning line -1- and tighten with fastening nut.
3. Tighten the hose clamp -3-.
4. Determine the quantity of refrigerant oil. => Technical data for the air-conditioning system, volume removed by suction + 30 cm3.

Subsequent work

Subsequent work for the dryer

1. Fill in refrigerant correctly. -> 870317 Draining and filling in refrigerant - filling in
2. Install cover on left for plenum chamber. -> 852219 Removing and installing cover - installing 85221900 Removing and installing cover