Accumulator HVAC: Service and Repair

ACCUMULATOR REPLACEMENT

REMOVAL PROCEDURE

TOOLS REQUIRED
J 38042 Dual O-Ring Tube Separator

CAUTION: Refer to Battery Disconnect Caution in Service Precautions.




1. Disconnect the negative battery cable.
2. Recover the refrigerant. Refer to Refrigerant Recovery and Recharging.
3. Disconnect the electrical connectors, as necessary.
4. Remove the pressure cycling switch.
5. Disconnect the hose assembly from the accumulator using the J 38042. Refer to the appropriate procedure from the following list:
- Compressor Hose Assembly Replacement (Gasoline Engines)
- Compressor Hose Assembly Replacement (Diesel Engines)

6. Disconnect the accumulator from the evaporator using the J 38042.

IMPORTANT: Cap or plug all of the open connections.

7. Remove the O-ring seals from the accumulator.
8. Remove the accumulator bracket screw.
9. Remove the accumulator.
10. Remove the upper and the lower accumulator insulators.

INSTALLATION PROCEDURE




1. Install the upper and lower accumulator insulators.
2. Install the accumulator.
If the accumulator is being replaced, add oil.
Refer to Refrigerant Recovery and Recharging.

NOTE: Refer to Fastener Notice in Service Precautions.

3. Install the accumulator bracket screw.

Tighten
Tighten the screw to 6 N.m (53 lb in).

4. Coat the new O-ring seals with 525 viscosity refrigerant oil.
5. Install the new O-ring seals.
6. Connect the accumulator to the evaporator.

Tighten
Tighten the accumulator to 41 N.m (30 lb ft).

7. Connect the hose assembly to the accumulator.
Refer to the appropriate procedure from the following list:
- Compressor Hose Assembly Replacement (Gasoline Engines)
- Compressor Hose Assembly Replacement (Diesel Engines)
8. Connect the pressure cycling switch.
9. Connect the electrical connectors, as necessary.
10. Connect the negative battery cable.
11. Charge the system. Refer to Refrigerant Recovery and Recharging.
12. Inspect the system for leaks. Refer to Leak Testing.