Accumulator HVAC: Service and Repair

ACCUMULATOR REPLACEMENT

TOOLS REQUIRED
J 39400-A Halogen Leak Detector

REMOVAL PROCEDURE
1. Recover the refrigerant from the A/C system. Refer to Refrigerant Recovery and Recharging.
2. Remove the A/C pressure switch (4.3L only).







3. Remove the accumulator (2) to evaporator nut.
4. Remove the compressor hose assembly from the accumulator.
5. Remove the O-ring seals and discard.







6. Remove the accumulator clamp bolt.
7. Remove the accumulator.







INSTALLATION PROCEDURE
1. Install the accumulator into the accumulator clamp.

IMPORTANT If replacing the accumulator, add the refrigerant oil to the accumulator. Refer to Refrigerant System Capacities for system capacity information.

2. Install the accumulator clamp bolt.

NOTE: Refer to Fastener Notice in Service Precautions. Vehicle Damage Warnings

Tighten
Tighten the bolt to 10 N.m (88 lb in).

3. Install the A/C low pressure switch.







4. Install new O-ring seals.
5. Connect the compressor hose assembly to the accumulator (2).

Tighten
Tighten the nut to 48 N.m (35 lb ft).

6. Install the accumulator to evaporator retaining nut.

Tighten
Tighten the nut to28 N.m (21 lb ft).

7. Connect the electrical connector to the A/C pressure switch (4.3L only).
8. Evacuate and recharge the A/C system. Refer to Refrigerant Recovery and Recharging.
9. Leak test the fittings of the component using the J 39400-A.