Dodge Ram Truck 1500-2500-3500. Manual — part 2077

8.3L ENGINE

1. If removed, install the A/C pressure transducer onto

the A/C discharge line (1) (Refer to 24 - HEATING
& AIR CONDITIONING/CONTROLS/TRANSDUC-
ER-A/C PRESSURE - INSTALLATION).

2. Position the A/C discharge line into the engine

compartment.

3. Remove the tape or plugs from the opened dis-

charge line fitting and the inlet port of the A/C con-
denser (6).

4. Lubricate a new seal with clean refrigerant oil and

install it and a new gasket onto the discharge line
fitting. Use only the specified seal 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.

5. Connect the A/C discharge line to the A/C con-

denser.

6. Install the nut (2) that secures the A/C discharge

line to the A/C condenser. Tighten the nut to 22
N·m (16 ft. lbs.).

7. Install the A/C discharge line (3) into the two refrig-

erant line retainer clips (2) located at the top of the
fan shroud (1).

8. Install the plastic cover (4) onto the condenser inlet

stud.

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9. Remove the tape or plugs from the opened dis-

charge line fitting and compressor outlet port.

10. Lubricate a new seal with clean refrigerant oil and

install it and new gasket onto the discharge line
fitting. Use only the specified seal 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.

11. Install the A/C discharge line (3) onto the A/C

compressor (2).

12. Install the bolt (5) that secures the A/C discharge

line to the A/C compressor. Tighten the bolt to 20
N·m (15 ft. lbs.).

13. Connect the wire harness connector to the A/C

pressure transducer.

14. Reconnect the negative battery cable.

15. Evacuate the refrigerant system (Refer to 24 -

HEATING & AIR CONDITIONING/PLUMBING -
STANDARD PROCEDURE - REFRIGERANT SYSTEM EVACUATE).

16. Charge the refrigerant system (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - STANDARD PRO-

CEDURE - REFRIGERANT SYSTEM CHARGE).

LINE-A/C LIQUID

DESCRIPTION

The liquid line is the refrigerant line that carries refrigerant from the A/C condenser to the A/C evaporator. The liquid
line for this model consist of two separate lines that connect to each other using a spring-lock type refrigerant line
coupler (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/REFRIGERANT LINE COUPLER - DESCRIP-
TION). The liquid lines are made from light-weight aluminum, and use braze-less fittings.

The front half of the liquid line includes the high-side service port and the rear half of the liquid line contains the
fixed orifice tube.

CAUTION: Use only O-ring seals specified for the vehicle. Failure to use the correct O-ring seal will cause
the refrigerant system connections to leak.

The liquid line has no serviceable parts except for the rubber O-ring seals, high-side service port valve, cap and
secondary retaining clip. The O-ring seals used on the connections are made from a special type of rubber not
affected by R-134a refrigerant. The O-ring seals must be replaced whenever the liquid line is removed and installed.

If the liquid line is found to be leaking or is damaged, it must be replaced.

REMOVAL

3.7L/4.7L/5.7L/5.9L ENGINES

WARNING: Refer to the applicable warnings and cautions for this system before performing the following
operation (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - WARNINGS) and (Refer to 24 - HEAT-
ING & AIR CONDITIONING/PLUMBING - CAUTIONS). Failure to follow the warnings and cautions could result
in possible personal injury or death.

NOTE: The A/C liquid line is serviced in two sections.

DR/DH

PLUMBING

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FRONT SECTION

1. Recover the refrigerant from the refrigerant system

(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING

-

STANDARD

PROCEDURE

-

REFRIGERANT SYSTEM RECOVERY).

2. Disconnect and isolate the negative battery cable.

3. If equipped with the diesel engine, remove the pas-

senger side battery (Refer to 8 - ELECTRICAL/
BATTERY SYSTEM/BATTERY - REMOVAL).

4. If equipped with a gasoline engine, remove the air

filter housing (Refer to 9 - ENGINE/AIR INTAKE
SYSTEM/AIR FILTER HOUSING - REMOVAL).

5. Remove the plastic cover from the condenser out-

let stud.

6. Remove the nut (8) that secures the front section

of the A/C liquid line (10) to the A/C condenser (7).

7. Disconnect the A/C liquid line from the A/C con-

denser and remove and discard the seal.

8. Disengage the A/C liquid line from the body retain-

ing clips (1 and 9).

9. Remove the secondary retaining clip (2) from the

spring-lock coupler that secures the front section of the A/C liquid line to the rear section of the liquid line (4).

10. Using the proper A/C line disconnect tool, disconnect the front section of the A/C liquid line from the rear sec-

tion of the liquid line and remove and discard the seal (Refer to 24 - HEATING & AIR CONDITIONING/PLUMB-
ING/COUPLER-REFRIGERANT LINE - REMOVAL).

11. Install plugs in, or tape over the opened ends of the A/C liquid lines and the condenser outlet port.

12. Remove the front section of the A/C liquid line from the engine compartment.

REAR SECTION

1. Recover the refrigerant from the refrigerant system

(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING

-

STANDARD

PROCEDURE

-

REFRIGERANT SYSTEM RECOVERY).

2. Disconnect and isolate the negative battery cable.

3. If equipped with the diesel engine, remove the pas-

senger side battery (Refer to 8 - ELECTRICAL/
BATTERY SYSTEM/BATTERY - REMOVAL).

4. If equipped with a gasoline engine, remove the air

filter housing (Refer to 9 - ENGINE/AIR INTAKE
SYSTEM/AIR FILTER HOUSING - REMOVAL).

5. Disengage the rear section of the A/C liquid line (4)

from the body retaining clip (3).

6. Remove the secondary retaining clip (2) from the

spring-lock coupler that secures the front section of
the A/C liquid line (10) to the rear section of the liq-
uid line.

7. Using the proper A/C line disconnect tool, discon-

nect the front section of the A/C liquid line from the
rear section of the liquid line and remove and dis-
card the seal (Refer to 24 - HEATING & AIR CON-
DITIONING/PLUMBING/COUPLER-REFRIGERANT LINE - REMOVAL).

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8. Remove the secondary retaining clip (5) from the spring-lock coupler that secures the rear section of the A/C

liquid line to the evaporator inlet tube (6).

9. Using the proper A/C line disconnect tool, disconnect the A/C liquid line from the evaporator inlet tube and

remove and discard the seal (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/COUPLER-REFRIG-
ERANT LINE - REMOVAL).

10. Install plugs in, or tape over the opened ends of the A/C liquid lines and the evaporator inlet port.

11. Remove the rear section of the A/C liquid line from the engine compartment.

8.3L ENGINE

WARNING: Refer to the applicable warnings and cautions for this system before performing the following
operation (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING - WARNINGS) and (Refer to 24 - HEAT-
ING & AIR CONDITIONING/PLUMBING - CAUTIONS). Failure to follow the warnings and cautions could result
in possible personal injury or death.

NOTE: The A/C liquid line is serviced in two sections. The front half of the liquid line includes the high side
service port and the rear half of the liquid line contains the fixed orifice tube.

FRONT SECTION

1. Recover the refrigerant from the refrigerant system

(Refer to 24 - HEATING & AIR CONDITIONING/
PLUMBING

-

STANDARD

PROCEDURE

-

REFRIGERANT SYSTEM RECOVERY).

2. Disconnect and isolate the negative battery cable.

3. Remove the air filter housing (Refer to 9 -

ENGINE/AIR

INTAKE

SYSTEM/AIR

FILTER

HOUSING - REMOVAL).

4. Remove the plastic cover from the condenser out-

let stud.

5. Remove the nut (3) that secures the front section

of the A/C liquid line (4) to the A/C condenser (6).

6. Disconnect the A/C liquid line from the A/C con-

denser and remove and discard the seal and gas-
ket.

7. Disengage the A/C liquid line from the body retain-

ing clips.

8. Remove the secondary retaining clip from the

spring-lock coupler (5) that secures the front section of the A/C liquid line to the rear section of the liquid line.

9. Using the proper A/C line disconnect tool, disconnect the front section of the A/C liquid line from the rear section

of the liquid line and remove and discard the seal (Refer to 24 - HEATING & AIR CONDITIONING/PLUMBING/
COUPLER-REFRIGERANT LINE - REMOVAL).

10. Install plugs in, or tape over the opened ends of the A/C liquid lines and the condenser outlet port.

11. Remove the front section of the A/C liquid line from the engine compartment.

DR/DH

PLUMBING

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