Dodge ZB 2005 Service Manual page 1074

ZB
A/C DISCHARGE LINE (Continued)
Fig. 9 A/C Dischgarge Line - Condenser
1 - RADIATOR
2 - MOUNTING BRACKET
3 - COOLING FAN
4 - A/C DISCHARGE LINE
5 - BOLT
6 - UPPER MOUNTING BOLT
7 - A/C CONDENSER
8 - LOWER MOUNTING BOLT
ting. Use only the specified O-ring as it is made of a
special material for the R-134a system. Use only
refrigerant oil of the type recommended for the A/C
compressor in the vehicle.
(9) Connect the A/C discharge line to the A/C con-
denser.
(10) Install the bolt that secures the A/C discharge
line to the A/C condenser. Tighten the bolt to 18 N·m
(13 ft. lbs.).
(11) Install the bolt that secures the discharge line
bracket to the left frame rail. Tighten the bolt
securely.
(12) Connect the wire harness connector to the A/C
pressure transducer.
(13) Install the air intake ducts to the front of the
air cleaner assembly (Refer to 9 - ENGINE/AIR
INTAKE SYSTEM - INSTALLATION).
(14) Reconnect the negative battery cable.
(15) Evacuate the refrigerant system (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
STANDARD PROCEDURE - REFRIGERANT SYS-
TEM EVACUATE).
(16) Charge the refrigerant system (Refer to 24 -
HEATING & AIR CONDITIONING/PLUMBING -
STANDARD PROCEDURE - REFRIGERANT SYS-
TEM CHARGE).
Fig. 10 A/C Discharge Line – Compressor
1 - SUCTION LINE
2 - BOLT (2)
3 - A/C COMPRESSOR CLUTCH
4 - UPPER MOUNTING BOLT
5 - A/C DISCHARGE LINE
6 - LOWER MOUNTING BOLT (2)
7 - A/C COMPRESSOR
8 - UPPER MOUNTING BOLT
A/C EVAPORATOR
DESCRIPTION
The A/C evaporator for the heating-A/C system is
located within the HVAC housing, behind the instru-
ment panel. The A/C evaporator is positioned in the
HVAC housing so that all air entering the housing
must pass over the evaporator fins before it is dis-
tributed through the heating-A/C system ducts and
outlets. However, air passing over the evaporator fins
will only be conditioned when the A/C compressor is
engaged and circulating refrigerant through the A/C
evaporator.
The A/C evaporator tubes are connected and sealed
to the A/C refrigerant lines by use of rubber O-ring
seals.
The A/C evaporator can only be serviced by remov-
ing and disassembling the HVAC housing assembly.
OPERATION
Refrigerant enters the A/C evaporator from the A/C
variable orfice valve as a low-temperature, low-pres-
sure mixture of liquid and gas. As air flows over the
fins of the A/C evaporator, the humidity in the air
condenses on the fins, and the heat from the air is
absorbed by the refrigerant. Heat absorption causes
PLUMBING 24 - 45