This procedure covers the removal and replacement of the AC receiver/drier on a 2022 Rivian EDV 500 delivery van, including refrigerant recovery and system recharge.

Warnings

Tools required

Parts

• AC receiver/drier assembly × 1 — Use OEM Rivian specification
• AC line O-ring kit × 1 — Use OEM specification
• PAG oil for R-1234yf system × 1 — Use OEM specification
• R-1234yf refrigerant × 1 — Check system capacity on underhood label

Preparation

1. Verify vehicle is on level ground and parking brake is engaged
2. Disable high voltage system following Rivian service procedures and install HV disconnect lock
3. Allow AC system to stabilize to ambient temperature if recently operated
4. Document existing refrigerant charge weight from underhood label
5. Ensure AC recovery/recharge equipment is certified for R-1234yf and properly calibrated
6. Verify replacement receiver/drier is correct part number for EDV 500 configuration
7. Keep replacement receiver/drier sealed until ready for installation

Procedure

1. 1

   Recover refrigerant from AC system
   Connect R-1234yf recovery machine to high and low side service ports. Follow equipment manufacturer procedures to fully recover refrigerant from the system. Document recovered refrigerant weight. Once recovery is complete and system is at 0 PSI, allow system to stabilize for 5 minutes to ensure complete recovery.
2. 2

   Access receiver/drier location
   The receiver/drier on the EDV 500 is located in the front right corner of the engine compartment. Remove any protective covers or trim panels obstructing access. On EDV models, you may need to remove the front fascia undertray for full access to lower mounting points.
3. 3

   Disconnect electrical connector
   Locate the pressure sensor or temperature sensor connector on the receiver/drier. Press the locking tab and carefully disconnect the electrical connector. Secure connector out of the work area to prevent contamination.
4. 4

   Disconnect inlet AC line
   Using the appropriate AC line disconnect tool, release the quick-connect fitting on the inlet line from the condenser. Cap the open condenser line immediately to prevent contamination. Note the orientation of the line for reinstallation.
5. 5

   Disconnect outlet AC line
   Release the quick-connect fitting on the outlet line leading to the evaporator. Cap the open evaporator line immediately. Inspect both disconnected lines for debris or contamination that may indicate system failure.
6. 6

   Remove receiver/drier mounting
   Remove the mounting bracket bolts securing the receiver/drier to its mounting location. The EDV 500 typically uses a two-bolt clamp bracket. Support the receiver/drier while removing the final fastener, then carefully remove the assembly from the vehicle.
7. 7

   Inspect removed component and system
   Examine the old receiver/drier for signs of physical damage, corrosion, or oil residue indicating leaks. Check the desiccant condition through the sight glass if equipped. Inspect all AC line fittings and O-ring sealing surfaces for damage or wear.
8. 8

   Prepare new receiver/drier
   Remove the new receiver/drier from its packaging only when ready to install. Check that all port caps are in place. Add the specified amount of fresh PAG oil for R-1234yf systems as indicated in service information (typically 1-2 oz unless system was completely drained).
9. 9

   Install new O-rings
   Remove caps from AC line ports on the new receiver/drier. Install new O-rings on both the inlet and outlet fittings. Lightly coat O-rings with fresh PAG oil compatible with R-1234yf. Ensure O-rings are properly seated in their grooves without twisting.
10. 10

    Install receiver/drier assembly
    Position the new receiver/drier in the mounting bracket location, ensuring proper orientation with inlet facing condenser and outlet facing evaporator. Install mounting bracket and bolts. Tighten mounting bolts in a crossing pattern to secure the receiver/drier without distorting the bracket.
11. 11

    Connect AC lines
    Remove caps from condenser and evaporator lines. Connect the inlet line from the condenser to the receiver/drier inlet, pressing firmly until the quick-connect fitting audibly clicks. Connect the outlet line to the evaporator in the same manner. Verify both connections are secure by pulling gently on each line.
12. 12

    Reconnect electrical connector
    Reconnect the pressure or temperature sensor electrical connector to the receiver/drier. Ensure the connector locks properly with an audible click. Verify the connector seal is properly seated.
13. 13

    Evacuate AC system
    Connect vacuum pump and micron gauge to AC service ports. Evacuate the system to 500 microns or below. Maintain vacuum for minimum 30 minutes. After vacuum hold period, close service valves and monitor for 10 minutes - reading should not rise above 1000 microns, confirming system integrity.
14. 14

    Recharge AC system
    Using the refrigerant scale and R-1234yf recharge equipment, add refrigerant to the exact weight specified on the underhood label. Charge through the low-side service port with system off, then start vehicle and enable AC to draw remaining charge through compressor operation. Monitor system pressures during charging process.

Reassembly

1. Reinstall any undertray panels or protective covers removed for access
2. Verify all electrical connectors in work area are properly secured
3. Remove HV disconnect lock and restore high voltage system following Rivian procedures
4. Clear any stored diagnostic codes related to AC system pressure if present

Verification

• Start vehicle and enable AC system at maximum cooling with recirculation on
• Verify compressor engages and operates smoothly without unusual noise
• Check AC outlet temperature reaches below 45°F within 5 minutes of operation
• Inspect all AC line connections for signs of refrigerant leaks using UV dye or electronic leak detector
• Verify pressure sensor readings are within normal range on scan tool (typically 30-45 PSI low side, 175-250 PSI high side at idle with 80°F ambient)
• Confirm no AC-related warning lights or messages appear on instrument cluster
• Test drive vehicle and verify AC performance remains consistent under various load conditions

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