Accumulator HVAC: Service and Repair
SUCTION ACCUMULATORREMOVAL
CAUTION: Refrigerant Compressor Oil (mineral oil) F73Z-19577-AA (Motorcraft YN-9-A) should be used to lubricate R-134a refrigerant system O-ring seals only and should not be added to R-134a refrigerant systems as an A/C compressor lubricant. PAG Refrigerant Compressor Oil F7AZ-19D589-DA (Motorcraft YN-12-C) or equivalent meeting Ford specification WSH-M1C231-B only should be used as an A/C compressor lubricant.
NOTE: Installation of a new suction accumulator is not required when repairing the air conditioning system except when there is physical evidence of system contamination from a failed A/C compressor or damage to the suction accumulator.
All vehicles
1. Recover the refrigerant.
Vehicles with 3.0L (2V) engine
2. Remove the two bolts and remove the roll restrictor.
3. Remove the bolts and position aside the roll restrictor bracket.
4. Position the degas bottle aside.
1 Disconnect the hose.
2 Remove the bolt and nut. Position the degas bottle aside.
Vehicles with 3.0L (4V) engine
5. Remove the degas bottle.
6. Remove the two LH roll restrictor crossmember bolts.
7. Remove the RH roll restrictor crossmember bolt.
8. Remove the four bolts and position the RH roll restrictor bracket aside.
9. Detach the wire harness.
1 Remove the nut.
2 Detach the wire harness.
All vehicles
10. Remove the nut.
11. Remove the stud.
12. Disconnect the spring lock coupling at the evaporator outlet.
- Discard the O-ring seals.
13. Disconnect the vacuum lines.
14. Disconnect the suction accumulator spring lock coupling.
- Discard the O-ring seals.
15. Disconnect the A/C low charge protection switch electrical connector.
16. Remove the screw.
17. Remove the suction accumulator.
INSTALLATION
1. To install, reverse the removal procedure.
- Install new O-ring seals lubricated in clean mineral oil.
- Lubricate the refrigerant system with the correct amount of clean PAG oil.
2. Evacuate, leak test and charge the A/C system.