Opening up an AC system requires a number of special tools to really put it back together and have it work correctly. Here are the instructions for the Ford Escape
2.0L Engine
CAUTION
Before beginning this procedure, refer to the precautions at the beginning of this section. Only a MVAC-trained, EPA-certified, automotive technician should service the A/C system or its components.
WARNING
To prevent refrigerant system contamination, if you are installing a new A/C compressor because the A/C compressor has failed internally, you must use the following procedures:
NOTE
Installation of a new suction accumulator is not necessary 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
If an A/C Flusher is available, carry out the air conditioning (A/C) system flushing general procedure.
NOTE
NOTE: If the A/C Flusher is not available, carry out the refrigerant system filtering following air conditioning (A/C) component installation general procedure.
Install a new A/C evaporator core orifice.
Remove the drive belt.
Disconnect the A/C clutch field coil electrical connector.
WARNING
Plug all ports to prevent contamination from dirt or moisture.
Remove the A/C manifold and tube assembly bolt and disconnect the A/C manifold and tube assembly.
Remove the bolts and the A/C compressor.
To install:
Installation is the reverse of the removal procedure, noting the following:
Tighten the A/C compressor bolt to 18 ft. lbs. (25 Nm).
Tighten the A/C manifold and tube bolt to 18 ft. lbs. (25 Nm).
Lubricate the new A/C compressor with the correct amount of PAG Compressor Oil YN-12-C or equivalent meeting Ford specification WSH-M1C231-B.
Lubricate the new A/C manifold O-ring seals with PAG Compressor Oil YN-12-C or equivalent meeting Ford specification WSH-M1C231-B.
Apply Pipe Sealant with Teflon® D8AZ-19554-A or equivalent meeting Ford specifications WSK-M2G350-A2 and ESR-M18P7-A to the threads of the A/C manifold and tube assembly bolt.
2.3L Engine
Except Hybrid
CAUTION
Before beginning this procedure, refer to the precautions at the beginning of this section. Only a MVAC-trained, EPA-certified, automotive technician should service the A/C system or its components.
WARNING
If installing a new A/C compressor due to an internal failure of the old unit, carry out the following procedures to remove contamination from the A/C system.
If A/C flushing equipment is available, carry out flushing of the air conditioning system prior to installing a new air conditioning compressor.
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.
Install a new evaporator core orifice.
Install a new suction accumulator.
NOTE
Installation of a new suction accumulator is not required when repairing the A/C system except when there is physical evidence of system contamination from a failed A/C compressor or damage to the suction accumulator.
Raise and safely support the vehicle.
Recover the A/C refrigerant.
Remove the accessory drive belt.
Disconnect the A/C compressor electrical connector.
Disconnect the suction accumulator to compressor line.
Remove the suction accumulator to compressor line bolt.
Disconnect the compressor to condenser discharge line.
Remove the compressor to condenser discharge line bolt.
Remove and discard the O-rings.
Remove the 3 bolts and the A/C compressor.
NOTE
New O-ring seals lubricated with clean mineral oil must be installed before connecting any A/C fitting which has been disconnected.
Installation is the reverse of the removal procedure. Note the following tightening specifications:
A/C compressor mounting bolts: 18 ft. lbs. (25 Nm)
Compressor-to-condenser discharge line bolt: (15 ft. lbs. (20 Nm)
Suction accumulator-to-compressor line bolt: 15 ft. lbs. (20 Nm)
If not filtering the A/C system, lubricate the refrigerant system with the correct amount of clean PAG oil.
Evacuate, leak test, and charge the refrigerant system.
Hybrid
CAUTION
Before beginning this procedure, refer to the precautions at the beginning of this section. Only a MVAC-trained, EPA-certified, automotive technician should service the A/C system or its components.
WARNING
If installing a new A/C compressor due to an internal failure of the old unit, carry out the following procedures to remove contamination from the A/C system.
If A/C flushing equipment is available, carry out flushing of the air conditioning system prior to installing a new air conditioning compressor. F
If A/C flushing equipment is not available, carry out filtering of the air conditioning system after a new air conditioning compressor is installed.
Install a new evaporator core orifice.
Install a new passenger zone valve.
Install a new battery zone valve.
Install a new thermostatic expansion valve and filter.
Install a new suction accumulator.
Raise and safely support the vehicle.
Recover the refrigerant.
Remove the drive belt.
Remove the compressor manifold and tube assembly bolt and position the A/C manifold and tube assembly aside. Discard the O-rings.
Disconnect the A/C compressor electrical connector.
Remove the 4 A/C compressor mounting bolts and the A/C compressor.
NOTE
New O-ring seals, lubricated in clean mineral oil, must be installed before reconnecting any A/C fitting which has been disconnected.
Installation is the reverse of the removal procedure. Note the following tightening specifications:
A/C compressor mounting bolts: 18 ft. lbs. (25 Nm).
Compressor manifold and tube bolt: 15 ft. lbs. (21 Nm)
If not filtering the A/C system, lubricate the refrigerant system with the correct amount of clean PAG oil.
Evacuate, leak test and charge the refrigerant system.
3.0L Engine
CAUTION
Before beginning this procedure, refer to the precautions at the beginning of this section. Only a MVAC-trained, EPA-certified, automotive technician should service the A/C system or its components.
WARNING
To prevent refrigerant system contamination, if you are installing a new A/C compressor because the A/C compressor has failed internally, you must use the following procedures:
NOTE
Installation of a new suction accumulator is not necessary 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
If an A/C Flusher is available, carry out the air conditioning (A/C) system flushing general procedure.
NOTE
If the A/C Flusher is not available, carry out the refrigerant system filtering following air conditioning (A/C) component installation general procedure.
Install a new A/C evaporator core orifice.
Remove the drive belt.
If equipped, disconnect the engine block heater electrical connector.
Disconnect the A/C clutch field coil electrical connector.
WARNING
Plug all ports to prevent contamination from dirt or moisture.
Remove the A/C manifold and tube assembly bolt from the top of the A/C compressor and disconnect the A/C manifold and tube assembly.
Remove the bolts and the A/C compressor.
To install, reverse the removal procedure. Tighten the A/C compressor to 18 ft. lbs. (25 Nm) and the A/C manifold and tube bolt to 15 ft. lbs. (20 Nm).
Lubricate the new A/C compressor with the correct amount of PAG Compressor Oil YN-12-C or equivalent meeting Ford specification WSH-M1C231-B.
Lubricate the new A/C manifold O-ring seals with PAG Compressor Oil YN-12-C or equivalent meeting Ford specification WSH-M1C231-B.
Apply Pipe Sealant with Teflon® D8AZ-19554-A or equivalent meeting Ford specifications WSK-M2G350-A2 and ESR-M18P7-A to the threads of the A/C manifold and tube assembly bolt. From [http://www.autozone.com/autozone/repairinfo/repairguide/repairGuideContent.jsp?pageId=0996b43f802e6d56|here.] Hope this helps, good luck.