Dodge Dakota Sport 2001 Service Manual page 2196

AN
PLUMBING
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
WARNING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
CAUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
DIAGNOSIS AND TESTING . . . . . . . . . . . . . . . . . 34
REFRIGERANT SYSTEM LEAKS . . . . . . . . . . . 34
STANDARD PROCEDURE . . . . . . . . . . . . . . . . . . 34
REFRIGERANT SYSTEM CHARGE . . . . . . . . . 34
A/C COMPRESSOR
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
DIAGNOSIS AND TESTING . . . . . . . . . . . . . . . . . 35
A/C COMPRESSOR . . . . . . . . . . . . . . . . . . . . . 35
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 36
A/C CONDENSER
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 38
A/C DISCHARGE LINE
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 39
A/C EVAPORATOR
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 40
A/C ORIFICE TUBE
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 41
ACCUMULATOR
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
PLUMBING
DESCRIPTION- REFRIGERANT LINES
The refrigerant lines and hoses are used to carry
the refrigerant between the various air conditioning
system components. A barrier hose design with a
nylon tube, which is sandwiched between rubber lay-
ers, is used for the R-134a air conditioning system on
this vehicle. This nylon tube helps to further contain
the R-134a refrigerant, which has a smaller molecu-
lar structure than R-12 refrigerant. The ends of the
PLUMBING
TABLE OF CONTENTS
page
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 42
HEATER CORE
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 43
LIQUID LINE
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 43
REFRIGERANT
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
DIAGNOSIS AND TESTING . . . . . . . . . . . . . . . . . 44
REFRIGERANT SYSTEM LEAKS . . . . . . . . . . . 44
STANDARD PROCEDURE . . . . . . . . . . . . . . . . . . 45
REFRIGERANT SYSTEM EVACUATE . . . . . . . . 45
REFRIGERANT RECOVERY. . . . . . . . . . . . . . . 45
REFRIGERANT SYSTEM CHARGE . . . . . . . . . 45
REFRIGERANT OIL
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
STANDARD PROCEDURE . . . . . . . . . . . . . . . . . . 46
REFRIGERANT OIL LEVEL. . . . . . . . . . . . . . . . 46
SUCTION LINE
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 47
REFRIGERANT LINE COUPLER
DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
REMOVAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . 48
refrigerant hoses are made from lightweight alumi-
num or steel, and commonly use braze-less fittings.
Any kinks or sharp bends in the refrigerant plumb-
ing will reduce the capacity of the entire air condi-
tioning system. Kinks and sharp bends reduce the
flow of refrigerant in the system. A good rule for the
flexible hose refrigerant lines is to keep the radius of
all bends at least ten times the diameter of the hose.
In addition, the flexible hose refrigerant lines should
be routed so they are at least 80 millimeters (3
inches) from the exhaust manifold.
PLUMBING 24 - 31
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