Air Conditioning (A/C) Compressor: Notes

WARNING: This page is about a different car, the 2004 Mercury Monterey and 2004 Ford Freestar. However, it is still accessible from the selected car via links, so may be relevant.

Special Tool(s)

Fig 1: Identifying Special Tools

Courtesy of FORD MOTOR CO.

MATERIAL SPECIFICATION

Item	Specification
PAG Refrigerant Compressor Oil (R-134a Systems) F7AZ-19589-DA (Motorcraft YN-12-C)	WSH-M1C231-B
Refrigerant Compressor Oil (Mineral Oil) F73Z-19577-AA (Motorcraft YN-9-A)	ESH-M2C31-A2

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.

CAUTION: If installing a new air conditioning compressor due to an internal failure of the old unit, you must carry out the following procedures to remove contamination from the air conditioning system.

If A/C flushing equipment is available, carry out flushing of the air conditioning system prior to installing a new air conditioning compressor. For additional information refer to AIR CONDITIONING (A/C) SYSTEM FLUSHING .
If A/C flushing equipment is not available, carry out filtering of the air conditioning system after a new air conditioning compressor has been installed. For additional information refer to REFRIGERANT SYSTEM FILTERING FOLLOWING AIR CONDITIONING (A/C) COMPRESSOR INSTALLATION .
Install a new evaporator core orifice (19D990), as directed by the A/C flushing or filtering procedure.
Install a new suction accumulator (19C836), as directed by the A/C flushing or filtering procedure.

NOTE: If installing a new A/C compressor, the A/C clutch disc and hub (19D786), A/C compressor pulley (19D784) and A/C clutch field coil (19D798) must be inspected and transferred from the old unit to the new unit if suitable for reuse.

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.

NOTE: New O-ring seals, lubricated in clean mineral oil, must be installed before reconnecting any A/C fitting which has been disconnected.

Position the vehicle on a hoist with the gear selector in NEUTRAL. For additional information refer to JACKING & LIFTING .
Recover the refrigerant. For additional information refer to AIR CONDITIONING (A/C) SYSTEM RECOVERY, EVACUATION AND CHARGING .
Remove the generator. For additional information refer to BATTERY & CHARGING SYSTEM .
Disconnect the clutch field coil electrical connector.

Fig 2: Disconnecting Clutch Field Coil Electrical Connector
Courtesy of FORD MOTOR CO.
Completely loosen the A/C compressor mounting bolt.

Fig 3: Identifying A/C Compressor Mounting Bolt
Courtesy of FORD MOTOR CO.
Remove the three bolts from the A/C mounting bracket.

Fig 4: Identifying A/C Mounting Bracket Bolt
Courtesy of FORD MOTOR CO.
Remove the bolts from the generator mounting bracket.

Fig 5: Removing Bolts From Generator Mounting Bracket
Courtesy of FORD MOTOR CO.
Completely loosen the generator mounting bracket bolt.

Fig 6: Loosening Generator Mounting Bracket Bolt
Courtesy of FORD MOTOR CO.
Lift the generator mounting bracket until the remaining bolt clears the frame rail and remove the bolt. Remove the generator mounting bracket.

Fig 7: Lifting Generator Mounting Bracket
Courtesy of FORD MOTOR CO.
Remove the RH cooling fan and shroud assembly bolt.

Fig 8: Removing RH Cooling Fan And Shroud Assembly Bolt
Courtesy of FORD MOTOR CO.
Remove the parts in the order indicated in the following illustrations and tables.

Fig 9: Exploded View Of A/C Compressor
Courtesy of FORD MOTOR CO.

Fig 10: Identifying A/C Clutch & Hub Assembly
Courtesy of FORD MOTOR CO.
Lubricate the refrigerant system with the correct amount of clean PAG oil before installing the A/C compressor. For additional information refer to REFRIGERANT OIL ADDING .

NOTE: If installing a new A/C compressor, the A/C clutch components should be reused unless obvious signs of damage are found. If excessive grooving is found, a new A/C clutch disc and hub and A/C compressor pulley must be installed together. Otherwise, each component can be installed individually where needed.

Visually inspect the A/C clutch disc and hub, A/C compressor pulley and A/C clutch field coil for damage.
- Inspect for physical damage, including cracked or melted components or discoloration due to excessive heat.
- Inspect for excessive wear, including grooving in the A/C clutch disc and hub or A/C compressor pulley that is more than fingernail depth.
- Inspect for roughness in the A/C compressor pulley bearing.
To install, reverse the removal procedure.
If filtering of the air conditioning system is not to be carried out, evacuate, leak test and charge the refrigerant system. For additional information refer to AIR CONDITIONING (A/C) SYSTEM RECOVERY, EVACUATION AND CHARGING .