Buick Regal Owners & Service Manuals

Buick Regal: Air Conditioning System Seal Replacement

Removal Procedure

1. Disassemble the A/C refrigerant components. Refer to the appropriate repair procedure.

NOTE: Cap or tape the open A/C refrigerant components immediately to prevent system contamination.

2. Cap or tape the A/C refrigerant components.

3.

Heating, Ventilation, and Air Conditioning

Remove the sealing washer (1) from the A/C refrigerant component.

4. Inspect the seal washer for signs of damage to help determine the root cause of the failure.

5. Inspect the A/C refrigerant components for damage or burrs. Repair if necessary.

NOTE: DO NOT reuse sealing washer.

6. DISCARD the sealing washer.

Installation Procedure

NOTE: Flat washer type seals do not require lubrication.

1. Inspect the new sealing washer for any signs of cracks, cuts, or damage.

Do not use a damaged sealing washer.

2. Remove the cap or tape from the A/C refrigerant components.

3.

Heating, Ventilation, and Air Conditioning

Using a lint-free clean, dry cloth, clean the sealing surfaces of the A/C refrigerant components.

4. Carefully install the NEW sealing washer (1) onto the A/C refrigerant component.

The sealing washer (1) must completely bottom against the surface of the fitting.

NOTE: After tightening the A/C components, there should be a slight sealing gap of approximately 1.2 mm (3/64 in) between the A/C line and the A/C component.

5. Assemble the remaining A/C refrigerant components. Refer to the appropriate repair procedure.

AIR CONDITIONING O-RING SEAL REPLACEMENT

Removal Procedure

1. Disassemble the A/C refrigerant components. Refer to the appropriate repair procedure.

2. Remove the O-ring seal from the A/C refrigerant component.

3. Inspect the O-ring seal for signs of damage to help determine the root cause of the failure.

4. Inspect the A/C components for damage or burrs. Repair if necessary.

NOTE: Cap or tape the open A/C refrigerant components immediately to prevent system contamination.

5. Cap or tape the A/C refrigerant components.

6. Discard the O-ring seal.

Installation Procedure

1. Inspect the new O-ring seal for any sign or cracks, cuts, or damage. Replace if necessary.

2. Remove the cap or tape from the A/C refrigerant components.

3. Using a lint-free clean, dry cloth, carefully clean the sealing surfaces of the A/C refrigerant components.

NOTE: DO NOT allow any of the mineral base 525 viscosity refrigerant oil on the new O-ring seal to enter the refrigerant system.

4. Lightly coat the new O-ring seal with mineral base 525 viscosity refrigerant oil.

NOTE: DO NOT reuse O-ring seals.

5. Carefully slide the new O-ring seal onto the A/C refrigerant component.

6.

Heating, Ventilation, and Air Conditioning

The O-ring (1) seal must be fully seated.

7. Assemble the A/C components.

AIR CONDITIONING COMPRESSOR HOSE REPLACEMENT

Removal Procedure

WARNING: Refer to R-1234yf Proper Service Procedures Warning.

1. Recover the refrigerant.

2.

Heating, Ventilation, and Air Conditioning

Air Conditioning Compressor Hose Nut(1)@Air Conditioning Refrigerant Heat Exchanger - Remove.

3. Air Conditioning Compressor Hose(2)@Air Conditioning Refrigerant Heat Exchanger - Remove.

4. Remove and DISCARD the sealing washer.(3).

5.

Heating, Ventilation, and Air Conditioning

Air Conditioning Compressor Hose Nut(1)@Camshaft Cover - Remove.

6. Air Conditioning Compressor Hose(2)@Camshaft Cover - Remove.

7.

Heating, Ventilation, and Air Conditioning

Front Bumper Fascia Lower Stiffener(2)@Front Bumper Fascia - Remove.

8.

Heating, Ventilation, and Air Conditioning

Air Conditioning Compressor Hose Nut(3)@Air Conditioning Condenser - Remove.

9. Air Conditioning Compressor Hose(2)@Air Conditioning Condenser - Remove.

10. Remove and DISCARD the sealing washer.(1).

11.

Heating, Ventilation, and Air Conditioning

Air Conditioning Compressor Hose Nut(1)@Air Conditioning Compressor - Remove.

12. Air Conditioning Compressor Hose(2)@Air Conditioning Compressor - Remove.

13. Remove and DISCARD the sealing washer.(3)[2x].

14.

Heating, Ventilation, and Air Conditioning

Disconnect the generator electrical connectors.

15.

Heating, Ventilation, and Air Conditioning

Battery Positive Cable Retainer(4) - Disengage.

16. Remove the air conditioning compressor hose (2) from the vehicle.

Installation Procedure

1. Install the air conditioning compressor hose to the vehicle.

2.

Heating, Ventilation, and Air Conditioning

Battery Positive Cable Retainer(4) - Engage.

3.

Heating, Ventilation, and Air Conditioning

Connect the generator electrical connectors.

4.

Heating, Ventilation, and Air Conditioning

Install NEW sealing washers.(3)[2x].

5. Air Conditioning Compressor Hose(2)@Air Conditioning Compressor - Install.

CAUTION: Refer to Fastener Caution.

6. Air Conditioning Compressor Hose Nut(1)@Air Conditioning Compressor - Install and tighten 22 N.m (16 lb ft).

7.

Heating, Ventilation, and Air Conditioning

Install a NEW sealing washer.(1).

8. Air Conditioning Compressor Hose(2)@Air Conditioning Condenser - Install.

9. Air Conditioning Compressor Hose Nut(3)@Air Conditioning Condenser - Install and tighten 22 N.m (16 lb ft).

10.

Heating, Ventilation, and Air Conditioning

Front Bumper Fascia Lower Stiffener(2)@Front Bumper Fascia - Install.

11.

Heating, Ventilation, and Air Conditioning

Air Conditioning Compressor Hose(2)@Camshaft Cover - Install.

12. Air Conditioning Compressor Hose Nut(1)@Camshaft Cover - Install and tighten9 N.m (80 lb in).

13.

Heating, Ventilation, and Air Conditioning

Install a NEW sealing washer.(3).

14. Air Conditioning Compressor Hose(2)@Air Conditioning Refrigerant Heat Exchanger - Install.

15. Air Conditioning Compressor Hose Nut(1)@Air Conditioning Refrigerant Heat Exchanger - Install and tighten22 N.m (16 lb ft).

16. Recharge the refrigerant.

17. Check for refrigerant leaks.

AIR CONDITIONING COMPRESSOR AND CONDENSER HOSE REPLACEMENT (LGX)

Removal Procedure

1. Recover the refrigerant.

2. Front Bumper Fascia - Remove.

3.

Heating, Ventilation, and Air Conditioning

Air Conditioning Condenser Nut(2) - Remove.

4. Air Conditioning Compressor and Condenser Hose(1)@Air Conditioning Condenser - Remove.

5.

Heating, Ventilation, and Air Conditioning

Air Conditioning Compressor and Condenser Hose Bracket Nut(1) - Remove.

6. Disconnect wiring harness at the generator.

7.

Heating, Ventilation, and Air Conditioning

Air Conditioning Compressor and Condenser Hose Nut(1) - Remove.

8. Air Conditioning Compressor and Condenser Hose(2)@Air Conditioning Compressor - Remove.

9.

Heating, Ventilation, and Air Conditioning

Air Conditioning Evaporator Hose Nut(2)@Air Conditioning Compressor and Condenser Hose(1) - Remove.

10. Air Conditioning Compressor and Condenser Hose(1)@Air Conditioning Evaporator Tube(3) - Remove.

11. Remove the air conditioning compressor and condenser hose (1) from the vehicle.

12. Air Conditioning System Sealing Washer - Remove and DISCARD.

Installation Procedure

1. Install NEW sealing washers. Air Conditioning System Seal Replacement.

2. Install the air conditioning compressor and condenser hose into the vehicle.

3.

Heating, Ventilation, and Air Conditioning

Air Conditioning Compressor and Condenser Hose(1)@Air Conditioning Evaporator Tube(3) - Install.

CAUTION: Refer to Fastener Caution.

4. Air Conditioning Evaporator Hose Nut(2)@Air Conditioning Compressor and Condenser Hose(1) - Install and tighten19 N.m (14 lb ft).

5.

Heating, Ventilation, and Air Conditioning

Air Conditioning Compressor and Condenser Hose(2)@Air Conditioning Compressor - Install.

6. Air Conditioning Compressor and Condenser Hose Nut(1) - Install and tighten 22 N.m (16 lb ft).

7.

Heating, Ventilation, and Air Conditioning

Air Conditioning Compressor and Condenser Hose Bracket Nut(1) - Install and tighten 9 N.m (80 lb in).

8. Install wiring harness at the generator.

9.

Heating, Ventilation, and Air Conditioning

Air Conditioning Compressor and Condenser Hose(1)@Air Conditioning Condenser - Install.

10. Air Conditioning Condenser Nut(2) - Install and tighten19 N.m (14 lb ft).

11. Recharge the refrigerant. Refrigerant Recovery and Recharging (R-1234yf).

12. Inspect for refrigerant leaks.

13. Front Bumper Fascia - Install.

AIR CONDITIONING COMPRESSOR AND CONDENSER HOSE REPLACEMENT (LTG)

Removal Procedure

1. Recover the refrigerant.

2. Air Cleaner Assembly - Remove.

3. Front Bumper Fascia - Remove.

4.

Heating, Ventilation, and Air Conditioning

Air Conditioning Condenser Nut(2) - Remove.

5. Air Conditioning Compressor and Condenser Hose(1)@Air Conditioning Condenser - Remove.

6.

Heating, Ventilation, and Air Conditioning

Air Conditioning Compressor and Condenser Hose Bolt(1) - Remove.

7. Air Conditioning Compressor and Condenser Hose(1)@Air Conditioning Compressor - Remove.

8.

Heating, Ventilation, and Air Conditioning

Air Conditioning Compressor and Condenser Hose Bracket Bolt(1) - Remove.

9.

Heating, Ventilation, and Air Conditioning

Air Conditioning Evaporator Hose Nut to Air Conditioning Compressor and Condenser Hose(2) - Remove.

10. Air Conditioning Compressor and Condenser Hose(1)@Air Conditioning Evaporator Tube(3) - Remove.

11. Remove and DISCARD the sealing washer.

Installation Procedure

1. Install NEW sealing washers.

2.

Heating, Ventilation, and Air Conditioning

CAUTION: Fastener Caution

Air Conditioning Compressor and Condenser Hose(1)@Air Conditioning Evaporator Tube(3) - Install.

3. Air Conditioning Evaporator Hose Nut to Air Conditioning Compressor and Condenser Hose(2) - Install and tighten 19N.m (14 lb ft).

4.

Heating, Ventilation, and Air Conditioning

Air Conditioning Compressor and Condenser Hose Bracket Bolt(1) - Install and tighten 9N.m (80 lb in).

5.

Heating, Ventilation, and Air Conditioning

Air Conditioning Compressor and Condenser Hose(1)@Air Conditioning Compressor - Install.

6. Air Conditioning Compressor and Condenser Hose Bolt(1) - Install and tighten19N.m (14 lb ft).

7.

Heating, Ventilation, and Air Conditioning

Air Conditioning Compressor and Condenser Hose(1)@Air Conditioning Condenser - Install.

8. Air Conditioning Condenser Nut(2) - Install and tighten 19N.m (14 lb ft).

9. Front Bumper Fascia - Install.

10. Air Cleaner Assembly - Install.

11. Recharge the refrigerant.

    READ NEXT:

     Air Conditioning Evaporator Tube Replacement (LTG)

    Removal Procedure 1. Recover the refrigerant. 2. Air Cleaner Assembly(1) - Remove. 3. Front Compartment Air Deflector - Remove. 4. Front Wheelhouse Liner-Right Side - Remove. 5. Front Bumper Fasc

     Receiver and Dehydrator Replacement

    Preliminary Procedure 1. Recover the refrigerant. 2. Radiator Air Lower Baffle Replacement. Air Conditioning Receiver and Dehydrator Plug Air Conditioning Receiver and Dehydrator Plug Retaining R

     Heater and Air Conditioning Evaporator Case Replacement

    Removal Procedure 1. Heater and Air Conditioning Evaporator and Blower Module - Remove. 2. { If equipped }Auxiliary Heater Core(2) - Remove. 3. Heater Core(1) - Remove. 4. Heater and Air Conditi

    SEE MORE:

     Turbocharger Heat Shield Replacement

    Turbocharger Heat Shield Bolt [3x] CAUTION: Refer to Fastener Caution. NOTE: In the event that a bolt breaks upon removal of components, perform an extraction of the broken bolt. Tighten 14 N.m (10 lb ft) Turbocharger Heat Shield TURBOCHARGER REPLACEMENT Removal Procedure CAUTION: If a tur

     DTC P0722, P077C, or P077D

    Diagnostic Instructions Perform the Diagnostic System Check prior to using this diagnostic procedure: Refer to Diagnostic System Check - Vehicle Review the description of Strategy Based Diagnosis:Strategy Based Diagnosis An overview of each diagnostic category can be found here: Refer to

    © 2019-2024 Copyright www.buregal6.com