Accumulator HVAC: Service and Repair

Accumulator Replacement

REMOVAL PROCEDURE
1. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
2. Disconnect the A/C compressor and condenser hose bolt at the accumulator:
3. Remove the accumulator bolt (2) at the module.
4. Remove the accumulator hose bracket nut (1) at the strut tower.
5. Remove the accumulator bracket bolt.
6. Remove the accumulator from the bracket.
7. Discard the O-rings.

INSTALLATION PROCEDURE
1. If installing a new accumulator, add 30 ml (1 fluid ounce) of polyalkylene glycol (PAG) synthetic refrigerant oil GM P/N 12345923.
2. Install the new O-ring.
3. Install the accumulator to the bracket.

NOTE: Refer to Fastener Notice in Service Precautions.

4. Install the accumulator bracket bolt.

Tighten
Tighten the accumulator bracket bolt to 6 N.m (53 lb in).

5. Install the accumulator hose bracket nut (1) at the strut tower.

Tighten
Tighten the accumulator hose bracket nut (1) at the strut tower to 8 N.m (71 lb in).

6. Install the accumulator bolt (2) at the module.

Tighten
Tighten the accumulator bolt (2) at the module to 16 N.m (12 lb ft).

7. Connect the A/C compressor and condenser hose bolt at the accumulator.

Tighten
Tighten the A/C compressor and condenser hose bolt at the accumulator to 16 N.m (12 lb ft).

8. Recharge the A/C system. Refer to Refrigerant Recovery and Recharging.
9. Perform a leak test on the A/C system. Refer to Leak Testing.