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On what? Front or rear? You will have to evacuate the AC system using a recovery machine. Most evaporator cores are labor intensive involving the entire dash assembly of the vehicle to be removed for access/replacement. Not a job for anyone who does not have mechanical experience in Ac repairs
9 is the orifice. Freon is headed toward the evaporator in the car. The orifice has an arrow on it. Good luck, please rate. Thanks
A/C Evaporator Core Orifice
NOTE: The A/C evaporator core orifice (19D990) should be replaced whenever an A/C compressor (19703) is replaced.
The A/C evaporator core orifice has the following characteristics:
is color-coded orange
has a diameter of 1.46 mm (0.058 inch)
is located in the condenser to evaporator tube (19835)
has filter screens located on the inlet and outlet ends of the tube body
The A/C evaporator core orifice is the restriction in the refrigerant circuit that creates the pressure drop necessary for cooling by metering the flow of liquid refrigerant into the A/C evaporator core (19860), which reduces the pressure.
Operation is as follows:
The inlet filter screen acts as a strainer for the liquid refrigerant flowing through the A/C evaporator core orifice.
O-rings on the A/C evaporator core orifice prevent the high-pressure liquid refrigerant from bypassing the A/C evaporator core orifice .
Adjustment or services cannot be made to the A/C evaporator core orifice assembly. It must be replaced as a unit.
this problem is due to a failed temperature control blend door actuator motor, this part in located about center of the dash on the air duck between the heater core and evaporator core, you must remove the dash Assembly to replace it.
A/C Evaporator Core Orifice
The A/C evaporator core orifice (19D990) should be replaced whenever the A/C compressor (19703) is replaced for lack of performance (internal damage).
The A/C evaporator core orifice, located in the condenser to evaporator tube (19835), cannot be serviced in detail as a component of the line. If replacement is necessary, follow the procedure outlined for Liquid Line Removal and Installation.
An orifice tube replacement service kit may be used as an optional service procedure.
Refer to Section 12-00 for information regarding the use of an A/C Evaporator Core Orifice Replacement Kit E5VY-19D695-A.
A/C Evaporator Core Orifice Replacement Kit Installation
Discharge A/C refrigerant system. Refer to System Discharging and Recovery as outlined.
Remove condenser to evaporator tube (19835) from vehicle.
Locate A/C evaporator core orifice (19D990) by three indentations or a circular recess in metal portion of the condenser to evaporator tube.
A/C Evaporator Core Orifice Location
Note angular position of ends of condenser to evaporator tube so that it can be reassembled in correct position.
Cut a 63.5 mm (2.5 inch) section from condenser to evaporator tube at A/C evaporator core orifice location. Do not cut closer than 25.4 mm (1 inch) from start of a bend in tube.
A/C Evaporator Core Orifice Section Removed From the Liquid Line
Remove contaminants from the two pieces of the condenser to evaporator tube.
NOTE: The inlet half of the condenser to evaporator tube will be positioned against the A/C evaporator core orifice tabs when correctly assembled.
Lubricate fitting with clean refrigerant oil and assemble orifice tube kit (with A/C evaporator core orifice installed) to condenser to evaporator tube. Make sure flow direction arrow is pointing toward evaporator end of the condenser to evaporator tube, and taper of each compressor ring is toward compression nut.
following is a general removal procedure of A/C evaporator core. The
evaporator is removed differently from different vehicles.
example, a 1994 Ford Taurus/Mercury Sable instructs you to, "Using a
hot knife, cut the top of the air conditioning evaporator housing
between the raised outline."
Use a hacksaw or a hot knife to cut the case. Reprinted with the permission of Ford Motor Company.
a 1993 Ford Probe manual says to simply remove the blower motor and
assembly screws before separating the case halves and removing the
The following procedure assumes that access to the evaporator has been determined.
Recover the refrigerant.
Drain the radiator if the heater hose(s) has to be removed to gain access.
Remove the heater hose(s), if necessary.
Remove any wiring harness, heat shields, brackets, covers, and braces that may restrict access to the evaporator core.
Remove the liquid line at the thermostatic expansion valve (TXV) or fixed orifice tube (FOT).
Remove the suction line at the evaporator or accumulator outlet.
Gain access to the evaporator core as outlined in the service manual.
Lift the evaporator from the vehicle.
Drain the oil from the evaporator into a calibrated cup.
For replacement, reverse the preceding procedure. First, replace the oil with the same amount and type you previously drained.