64 53 515 Replacing Desiccant Insert For A/C System
Risk of injury!
Refrigerant circuit is under high pressure!
Follow safety instructions for handling R134a refrigerant . See 64 50... Instructions For Handling Refrigerant R134a and/or 64 50... Safety Instructions For Handling Refrigerant R134A .
Avoid contact with refrigerant and refrigerant oil.
Follow safety instructions for handling refrigerant oil . Refer to 64 50... Instructions For Handling Refrigerant Oil (For Refrigerant R134a) .
Risk of damage!
Restart engine only when A/C system has been correctly filled.
Follow instructions for opening and replacing parts in refrigerant circuit! Refer to 64 52... Instructions For Opening And Replacing Parts In Refrigerant Circuit .
If A/C system is opened for more than 24 hours:
Replacing drier insert for A/C system
Necessary preliminary tasks:
- Drawing off, evacuating and filling the A/C system are not included in the time value given for this work operation. See 64 50 009 Drawing Off, Evacuating And Filling A/C System (R134A) .
- Remove condenser . Refer to 64 53 551 Removing and Installing Or Replacing Condenser For A/C System .
If necessary, pierce sticker over screw plug (1).
Open screw plug (1) and remove drier insert from A/C system condenser (3).
Installation:
Tightening torque, see 64 53 12AZ in 64 53 REFRIGERANT LINES AND EXPANSION VALVE .
Replace sealing ring and moisten with refrigerant oil.
After installation:
- Evacuate and fill A/C system . Refer to 64 50 009 Drawing Off, Evacuating And Filling A/C System (R134A) .
- Fill and vent cooling system and check for leaks. Refer to 17 00 039 VENTING COOLING SYSTEM AND CHECKING FOR WATER LEAKS (N52/ N52K/ N51/ N53) .