11/09/2024 18:09:10

Receiver Dryer and Desiccant (Remove and Replace)

Correction Code 18202002

  • 2024-09-10: Added warnings to wear suitable protective clothing, consisting of face and eye protection, heat-proof gloves, rubber boots and apron or waterproof overalls must be worn when carrying out operations on the air conditioning system.
  • 2023-08-28: Added image for clarity.
  • 2024-04-02: Added reminding of checking the pressure of A/C system before opening the accumulator.
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Warning
HFO-R1234yf and R134a are considered hazardous liquids and if handled incorrectly can cause serious injury. Suitable protective clothing, consisting of face and eye protection, safety glass, face shield, heat-proof gloves, chemical resistant gloves, rubber boots and apron or waterproof overalls must be worn when carrying out operations on the air conditioning system.
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Note
The desiccant bag in the receiver dryer is a serviceable item and must be replaced every 2 years, whenever the system is opened to ambient air for an extended time, or when an A/C system leak has been fixed.
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Note
The desiccant is located in the RH condenser.

Removal

  1. Position the vehicle on a lift but do not lift it at this time.
  2. Recover the A/C refrigerant from the vehicle. See A/C Refrigerant Recovery and Recharge (Remove and Replace).
    Warning IconA warning icon, calling your attention to a possibly risky situation
    Warning
    Make sure there is no pressure in the A/C system before performing the following steps. Failure to do so may result in damage to components and/or personal injury.
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    Note
    While the HVAC machine is recovering the refrigerant, perform the following:
    1. Remove the front underhood apron. See Underhood Apron - Front (Remove and Replace).
    2. Partially lift the vehicle.
    3. Remove the screw that attaches the fascia to the RH front fender (torque 1.5 Nm).
    4. Remove the bolt that attaches the RH portion of the fascia and applique to the fascia carrier (torque 4 Nm).
    5. Remove the RH plastic rivets (x5) that attach the RH aero shield to the lower valance.
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      Note
      Do not remove the last 3 plastic rivets on the LH side of the aero shield.
  3. Clean the area around the plug before removal.
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    Warning
    Please ensure to wear the Face Shield throughout the entire process to prevent foreign objects from flying out.
  4. Remove and discard the plug and the desiccant bag.
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    CAUTION
    Remove and discard O-rings.

Installation

Installation procedure is the reverse of removal, except for the following:
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CAUTION
Install a new desiccant bag and a new plug (torque 12 Nm) immediately to prevent ingress of dirt and moisture.
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Note
Do not reuse the plug.
  1. Perform a system vacuum and leak check. See A/C Refrigerant Recovery and Recharge (Remove and Replace).
  2. While the HVAC machine is running the vacuum and leak check, do the following:
    1. Reinstall the underhood aprons.
    2. Lower the vehicle.
  3. Charge the system with refrigerant. See A/C Refrigerant Recovery and Recharge (Remove and Replace).
  4. Perform a cooling system thermal test. See Cooling System - Thermal Test.