Dodge Journey: Description, Operation
DESCRIPTION
Fig. 265: A/C Expansion Valve Description KA
The A/C expansion valve controls the amount of refrigerant entering the A/C evaporator. The A/C expansion valve is of a thermostatic expansion valve (TXV) design and consists of an aluminum H-valve type body (1) with an inlet port (2), outlet port (3) and an integral thermal sensor (4).
The A/C expansion valve is located in the engine compartment at the dash panel, between the A/C refrigerant lines and the A/C evaporator.
OPERATION
The A/C expansion valve controls the high-pressure, low temperature liquid refrigerant from the A/C liquid line and converts it into a low-pressure, low-temperature mixture of liquid and gas before it enters the A/C evaporator. A mechanical sensor in the A/C expansion valve monitors the temperature and pressure of the refrigerant leaving the A/C evaporator through the A/C suction line, and adjusts the orifice size at the liquid line port to let the proper amount of refrigerant into the evaporator to meet the vehicle A/C cooling requirements.
Controlling the refrigerant flow through the A/C evaporator ensures that none of the refrigerant leaving the A/C evaporator is still in a liquid state, which could damage the A/C compressor.
NOTE: Replacement of the refrigerant line O-ring seals is required anytime a refrigerant line is disconnected from the expansion valve, or if the expansion valve is removed. Failure to replace the rubber O-ring seals may result in a refrigerant system leak.
The A/C expansion valve is factory calibrated and cannot be adjusted or repaired and must be replaced if inoperative or damaged.
Diagnosis and Testing
A/C EXPANSION VALVE
WARNING: Refer to the applicable warnings and cautions for this
system before
performing the following operation. Failure to follow the warnings and
cautions may ...
See also:
Intermediate shaft, diesel
REMOVAL
2.0L DIESEL
1. Remove the right half shaft.
Fig. 50: 2.0L Diesel Right Half Shaft Components
2. Remove the two intermediate shaft bolts (1).
3. Remove the intermediate shaft (2).
...
Removal
2.0L TURBO DIESEL
Fig. 2: Generator Cables
1. Remove engine cover.
2. Disconnect and isolate the negative battery cable.
3. Remove accessory drive belt.
4. Disconnect battery cable fro ...
Assembly
Fig. 65: Remove Input Shaft Bearing Cup
NOTE: Always use ATF on all moving parts during this assembly
procedure.
1. Use Bearing Cup Remover 9664 (2) and appropriate Slide Hammer (1) to
r ...