64 53 551 Removing and installing/replacing capacitor (with desiccant insert) for heating and air conditioning system
Special tools required:
Refrigerant circuit is under high pressure!
Follow safety instructions for handling R 134a tetrafluorethane refrigerant . See 64 50... SAFETY INFORMATIONS FOR HANDLING TETRAFLUORETHANE REFRIGERANT R134A or 64 50... INSTRUCTIONS FOR HANDLING R 134A REFRIGERANT .
Avoid contact with refrigerant and refrigerant oil.
Follow safety instructions for HANDLING REFRIGERANT OIL .
Restart engine only when A/C system has been correctly filled.
Follow instructions for opening and replacing parts in refrigerant circuit.
If air conditioning system is opened for more than 24 hours:
If air conditioning system is opened for more than 24 hours:
REPLACE DESICCANT INSERT FOR A/C SYSTEM
In vehicles after 12/08, the heating and air conditioning system capacitor must be replaced!
Necessary preliminary tasks:
- DRAWING OFF, EVACUATING AND FILLING THE HEATING AND AIR CONDITIONING SYSTEM are not included in the time value given for this job item
- Remove radiator. See 17 11 000 REMOVING AND INSTALLING RADIATOR (N53, N54, N54T) or 17 11 000 REMOVING AND INSTALLING RADIATOR (N55) .
Release screws (1).
Tightening torque 64 53 6AZ .
Detach refrigerant lines (2) and (3) rearwards from heating and air conditioning system capacitor (4).
Installation note:
Replace sealing rings.
Use special tool 00 9 030 to install sealing rings without damaging them.
Release screw (1).
If necessary, lay refrigerant lines (2) and (3) slightly to one side.
Unlock retaining tab (1) in direction of arrow and pull heating and air conditioning system capacitor (2) rearwards slightly.
Feed out heating and air conditioning system capacitor (1) upwards between tank ventilation line (2) and cover (3).
After installation:
- EVACUATE AND FILL HEATING AND AIR CONDITIONING SYSTEM
- Fill and vent cooling system and check for leaks.