Compressor Replacement

2005 Buick Allure (CANADA) V6-3.8LSECTION Compressor Replacement


COMPRESSOR REPLACEMENT

TOOLS REQUIRED
J 39400-A Halogen Leak Detector

REMOVAL PROCEDURE
1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
2. Remove the drive belts.
3. Remove the splash shield from the right side of the engine.
4. Remove the hose nut from the A/C compressor.
5. Remove the hose from the A/C compressor.

IMPORTANT: Remove and discard all sealing washers.

6. Disconnect the electrical connector from the A/C compressor.




7. Loosen the rear mounting bolt from the A/C compressor.
8. Remove the front mounting bolt from the A/C compressor.
9. Remove the front mounting nut from the A/C compressor.
10. Remove the A/C compressor.
11. If replacing the compressor, balance the compressor oil. Refer to Compressor Oil Balancing.

IMPORTANT: Replacement compressors are shipped with polyalkylene glycol (PAG) oil

INSTALLATION PROCEDURE
1. Install the compressor drain plug.

NOTE: Refer to Fastener Notice in Service Precautions.

Tighten the drain plug to 16 N.m (12 lb ft).

2. Position the A/C compressor onto the front A/C compressor mounting stud and the rear A/C compressor mounting bolt.
3. Install the A/C compressor front bolt.

Tighten the bolts to 50 N.m (36 lb ft).

4. Install the A/C compressor front mounting nut.

Tighten the nut to 50 N.m (36 lb ft).

5. Tighten the A/C compressor rear bolt.

Tighten the bolt to 50 N.m (36 lb ft).

6. Install new sealing washers.




7. Install the hose to the A/C compressor.
8. Install the nut to the A/C compressor hose.

Tighten the nut to 27 N.m (20 lb ft).

9. Connect the electrical connector to the A/C compressor.
10. Install the splash shield to the right side of the engine.
11. Install the drive belts.
12. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging.
13. Leak test the fittings of the component using J 39400-A.
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.