This procedure covers the removal and replacement of the AC compressor clutch assembly on a 2019-2024 Toyota RAV4 with 2.5L I4 engine, including refrigerant recovery, component replacement, and system recharge.

Warnings

Tools required

Parts

• AC compressor clutch assembly × 1 — Use OEM specification
• AC line O-rings × 4 — Use OEM specification
• PAG oil (ND-11 or equivalent) × 1 — Use Toyota-compatible PAG oil
• R-1234yf refrigerant × 1 — Per system capacity

Preparation

1. Ensure engine is completely cool to the touch
2. Park vehicle on level ground and engage parking brake
3. Raise and secure front of vehicle on jack stands at manufacturer lift points
4. Remove engine splash shield/undertray (multiple 10mm bolts and plastic clips)
5. Disconnect negative battery terminal and wait 3 minutes for airbag system discharge
6. Verify AC system has refrigerant by checking sight glass or low-pressure reading
7. Locate AC compressor on passenger side of engine compartment, driven by serpentine belt

Procedure

1. 1

   Recover AC refrigerant
   Connect AC recovery machine to service ports. Low-pressure port is on the suction line near the firewall, high-pressure port is on the liquid line near the condenser. Follow machine manufacturer instructions to fully recover all refrigerant from the system. Record amount recovered for recharge reference. Wait until machine indicates complete recovery (typically 15-20 minutes).
2. 2

   Remove serpentine belt
   Locate the spring-loaded serpentine belt tensioner on the right side of the engine. Using a 14mm socket and breaker bar, rotate tensioner counterclockwise to release belt tension. Remove belt from all pulleys, noting routing path (refer to underhood diagram if needed). Slowly release tensioner.
3. 3

   Disconnect AC compressor electrical connector
   Locate the AC compressor clutch coil electrical connector on the front of the compressor. Press the locking tab and disconnect the connector. On some models, you may need to release a wiring harness clip first. Inspect connector terminals for corrosion or damage.
4. 4

   Remove AC line fittings from compressor
   Using appropriate wrenches (typically 14mm and 17mm), disconnect both the suction line and discharge line from the rear of the compressor. Cap all open ports immediately with clean plugs to prevent moisture and debris entry. Remove and discard the old O-rings from the fittings. Allow any residual oil to drain into a measuring container to determine replacement amount.
   Torque spec

   AC Line Fittings20 Nm (15 lb-ft)
5. 5

   Remove compressor mounting bolts
   Support the compressor with one hand. Remove the three compressor mounting bolts (typically 12mm or 14mm) securing the compressor to the engine block. Note bolt locations as they may be different lengths. Carefully lower and remove the compressor from the engine bay. Place on clean work surface.
   ⚠Compressor weighs approximately 12-15 lbs. Support unit to prevent dropping and damaging lines or mounting brackets.
   Torque spec

   Compressor Bolts34 Nm (25 lb-ft)
6. 6

   Remove clutch plate snap ring
   With compressor on bench, use snap ring pliers to remove the large snap ring that retains the clutch plate to the compressor shaft. The snap ring is located in the center of the clutch plate assembly. Carefully expand the ring and lift it out of the groove. Inspect groove for damage or debris.
7. 7

   Remove clutch plate assembly
   Using a suitable clutch plate puller or two-jaw puller, carefully remove the clutch plate from the compressor shaft. The plate is secured by friction and may require moderate pulling force. Do not pry against the pulley or coil surfaces. Once removed, inspect the shaft splines and friction surfaces for wear or damage.
8. 8

   Remove pulley assembly
   Remove the snap ring securing the pulley bearing assembly to the compressor front housing. Using a pulley puller, extract the pulley/bearing assembly from the compressor nose. Note the position of any shims or spacers behind the pulley. Inspect bearing for roughness or noise by spinning by hand.
9. 9

   Remove clutch coil
   Remove the retaining bolts or screws (typically 8mm or 10mm) securing the electromagnetic clutch coil to the compressor front housing. There are usually 3-4 fasteners. Carefully slide the coil assembly off the compressor nose, feeding the wire harness through. Inspect coil winding for signs of burning or damage.
10. 10

    Install new clutch coil
    Clean the compressor front housing mounting surface. Install the new clutch coil onto the compressor nose, ensuring the wire harness is properly routed. Align mounting holes and install retaining bolts. Tighten bolts evenly in a cross pattern to prevent coil distortion. Do not overtighten.
11. 11

    Install new pulley assembly
    Install any original shims or spacers onto the compressor nose. Press or carefully tap the new pulley/bearing assembly onto the compressor until fully seated. Install the pulley retaining snap ring into its groove. Verify pulley spins freely without binding or excessive play. Pulley should have slight end play (0.3-0.8mm typical).
12. 12

    Install new clutch plate and set air gap
    Slide the new clutch plate onto the compressor shaft, aligning the splines. Install the clutch plate snap ring into the shaft groove. Using a feeler gauge, measure the air gap between the clutch plate and pulley face at 3-4 points around the circumference. Gap should be 0.35-0.60mm (0.014-0.024 inch). Adjust if necessary using shims behind the pulley.
    ℹ️Incorrect air gap will cause clutch slippage (too large) or premature wear and failure to disengage (too small). This measurement is critical for proper operation.
13. 13

    Reinstall compressor to engine
    Add the appropriate amount of fresh PAG oil to the compressor through one of the line ports to replace any lost during disassembly (typically 30-50ml). Position compressor on engine mounting bracket, aligning bolt holes. Install all three mounting bolts finger-tight, then torque to specification in a cross pattern.
    Torque spec

    Compressor Bolts34 Nm (25 lb-ft)
14. 14

    Reconnect AC lines
    Install new O-rings on both AC line fittings, lubricating lightly with fresh PAG oil. Remove caps from compressor ports. Connect both suction and discharge lines to compressor, ensuring O-rings remain properly seated. Hand-tighten fittings, then torque to specification using appropriate backup wrenches to prevent component damage.
    Torque spec

    AC Line Fittings20 Nm (15 lb-ft)
15. 15

    Reinstall serpentine belt and complete reassembly
    Reconnect AC compressor clutch electrical connector, ensuring it clicks into place. Route serpentine belt around all pulleys according to routing diagram. Rotate tensioner counterclockwise and slip belt onto final pulley, then slowly release tensioner. Verify belt is properly seated on all pulleys. Reconnect battery negative terminal. Reinstall engine splash shield and lower vehicle.
16. 16

    Evacuate and recharge AC system
    Connect AC service machine to both service ports. Evacuate system for minimum 30 minutes to remove all moisture and air. Monitor for vacuum hold - system should maintain vacuum for 10 minutes with machine off. If vacuum holds, recharge system with R-1234yf refrigerant to specification (typically 500-550 grams for this model). Add any additional PAG oil as needed based on amount lost during recovery.

Reassembly

1. Ensure all AC line fittings are torqued to specification with new O-rings installed
2. Verify serpentine belt is properly seated on all pulleys and tensioner is functioning
3. Confirm electrical connector is securely attached to clutch coil
4. Double-check all tools and parts are removed from engine compartment before testing

Verification

• Start engine and turn AC to maximum cold with fan on high
• Listen for AC compressor clutch engagement (audible click when AC is turned on)
• Verify clutch plate pulls in and begins rotating with pulley when engaged
• Check that both AC lines develop temperature difference - suction line should be cold, discharge line should be hot
• Monitor AC performance - system should produce cold air (40-45°F at vents) within 2-3 minutes
• Inspect all AC line connections for signs of refrigerant leakage using electronic leak detector
• Verify clutch disengages when AC is turned off and plate stops rotating while pulley continues
• Test system through several on/off cycles to confirm reliable engagement and disengagement
• Check for unusual noises from compressor during operation

More procedures for this vehicle