Accumulator HVAC: Service and Repair

Suction Accumulator - 6.0L Diesel













Removal and Installation

NOTE: Installation of a new suction accumulator is not required when repairing the A/C system, except when there is physical evidence of contamination from a failed A/C compressor or damage to the suction accumulator. Damage to the suction accumulator includes leaks in the suction accumulator, physical damage to the suction accumulator shell or desiccant, or moisture contamination. Moisture contamination results only from a complete loss of refrigerant, and equalization of the refrigerant system pressure with atmospheric pressure for a period longer than one hour. If even a slight amount of positive refrigerant pressure is present in the system before repairs are carried out, the suction accumulator should not be replaced.

NOTE: Care should be taken to minimize exposure of the suction accumulator desiccant to the atmosphere. Do not remove the shipping caps from the new suction accumulator until immediately before the line fittings are to be attached.

All vehicles

1. Recover the refrigerant.

2. Remove the 2 washer reservoir filler tube bolts and position the washer reservoir filler tube aside.

3. Detach and position the junction box aside.





4. Disconnect the evaporator outlet fitting.
- Discard the O-ring seal.

- To install, tighten to 40 Nm (30 lb-ft).

5. Detach the wire harness.

1. Disconnect the A/C cycling switch electrical connector.

2. Remove the nut and stud and detach the wire harness.





Vehicles without auxiliary A/C

6. Disconnect the suction accumulator outlet fitting in the following sequence.

1. Remove the suction accumulator outlet line bracket screw.

2. Remove the suction accumulator outlet fitting nut and disconnect the fitting.

- Discard the O-ring seal and gasket seal.

- To install, tighten the fitting to 15 Nm (133 lb-in).

- To install, tighten the screw to 2 Nm (18 lb-in).

Vehicles with auxiliary A/C

7. Remove the suction accumulator outlet line bracket screw.
- To install, tighten to 2 Nm (18 lb-in).

8. Disconnect the suction accumulator outlet spring lock coupling.
- Discard the O-ring seals.





All vehicles

9. Remove the 2 suction accumulator bolts and the suction accumulator.
- To install, tighten to 12 Nm (106 lb-in).

10. To install, reverse the removal procedure.
- Install a new gasket seal and new O-ring seals.

- Lubricate the refrigerant system with the correct amount of clean PAG oil.

11. Evacuate, leak test and charge the refrigerant system.