Dodge Nitro. Manual — part 773

Fig. 177: Removing/Installing LHD Liquid Line
Courtesy of CHRYSLER LLC

4. Install the A/C liquid line (5) into the two retaining clips (6) located on the right inner fender.

5. Connect the A/C liquid line to the A/C suction line (4).

6. Connect the A/C liquid and suction lines to the A/C expansion valve (3) and install the retaining nut (2).

Tighten the nut to 23 N.m (17 ft. lbs.).

7. If removed, install the A/C pressure transducer (1) onto A/C liquid line and connect the wire harness

connector to the transducer. See INSTALLATION for more information.

8. Install the air cleaner housing (refer to INSTALLATION for 3.7L - SERVICE INFORMATION or

INSTALLATION for 4.0L - SERVICE INFORMATION ).

9. Reconnect the negative battery cable.

10. Evacuate the refrigerant system. See REFRIGERANT SYSTEM EVACUATE.

11. Adjust the refrigerant oil level. See REFRIGERANT OIL LEVEL.

12. Charge the refrigerant system. See REFRIGERANT SYSTEM CHARGE.

RHD MODEL

CAUTION: Be certain to adjust the refrigerant oil level when servicing the A/C

refrigerant system. See REFRIGERANT OIL LEVEL. Failure to properly
adjust the refrigerant oil level will prevent the A/C system from operating
as designed and can cause serious A/C compressor damage.

NOTE:

When replacing multiple A/C system components, refer to the Refrigerant Oil
Capacities chart to determine how much oil should be added to the refrigerant
system. See REFRIGERANT OIL LEVEL.

NOTE:

Replacement of the refrigerant line O-ring seals and gaskets is required anytime
a refrigerant line is opened. Failure to replace the rubber O-ring seals and metal
gaskets could result in a refrigerant system leak.

2007 Dodge Nitro R/T

2007 HVAC Heating & Air Conditioning - Service Information - Nitro

FRONT SECTION

Fig. 178: A/C Liquid Line & Condenser Tube
Courtesy of CHRYSLER LLC

1. Be certain to adjust the refrigerant oil level when servicing the A/C refrigerant system. See

REFRIGERANT OIL LEVEL.

2. Remove the tape or plugs from the opened refrigerant line fittings and the condenser tube port.

3. Lubricate new rubber O-ring seals with clean refrigerant oil and install them onto the refrigerant line

fittings. Use only the specified O-rings as they are 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.

4. Connect the A/C liquid line (1) to the condenser tube (2) and install the secondary retaining clip. See

INSTALLATION.

Fig. 179: Retaining Clips, Secondary Retaining Clip, A/C Liquid Line & A/C Liquid Line
Courtesy of CHRYSLER LLC

5. Connect the front section of the A/C liquid line (4) to the rear section of the A/C liquid line (3) and install

2007 Dodge Nitro R/T

2007 HVAC Heating & Air Conditioning - Service Information - Nitro

the secondary retaining clip (2). See INSTALLATION.

6. Engage the A/C liquid line to the two retaining clips (1) located on the right inner fender.

7. Install the air cleaner housing (refer to REMOVAL for 3.7L - SERVICE INFORMATION or

REMOVAL for 4.0L - SERVICE INFORMATION ).

8. Reconnect the negative battery cable.

9. Evacuate the refrigerant system. See REFRIGERANT SYSTEM EVACUATE.

10. Charge the refrigerant system. See REFRIGERANT SYSTEM CHARGE.

REAR SECTION

Fig. 180: Removing/Installing RHD Liquid Lines - Rear Section
Courtesy of CHRYSLER LLC

1. Remove the tape or plugs from the opened refrigerant line fittings and the expansion valve ports.

2. Lubricate new rubber O-ring seals with clean refrigerant oil and install them onto the refrigerant line

fittings. Use only the specified O-rings as they are 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.

3. Position the rear section of the A/C liquid line (8) into the engine compartment from the right side of the

vehicle. Be sure to route the liquid line behind the diesel engine fuel filter.

4. Connect the rear section of the A/C liquid line (8) to the A/C suction line (7).

5. Connect the A/C liquid and suction lines to the A/C expansion valve (4) and install the retaining nut (5).

Tighten the nut to 23 N.m (17 ft. lbs.).

6. If removed, install the A/C pressure transducer (6) onto A/C liquid line and connect the wire harness

connector to the transducer. See INSTALLATION for more information.

7. Engage the A/C liquid line to the retaining clips (3) located on the dash panel and the brake lines near the

brake booster.

8. Connect the front section of the A/C liquid line (9) to the rear section of the A/C liquid line and install the

secondary retaining clip (2). See INSTALLATION.

9. Engage the A/C liquid line to the two retaining clips (1) located on the right inner fender.

2007 Dodge Nitro R/T

2007 HVAC Heating & Air Conditioning - Service Information - Nitro

10. Reposition the engine coolant reservoir to the dash panel and install the two retaining nuts. Tighten the

nuts securely.

11. Install the air cleaner housing (refer to REMOVAL for 3.7L - SERVICE INFORMATION or

REMOVAL for 4.0L - SERVICE INFORMATION ).

12. Reconnect the negative battery cable.

13. Evacuate the refrigerant system. See REFRIGERANT SYSTEM EVACUATE.

14. Adjust the refrigerant oil level. See REFRIGERANT OIL LEVEL.

15. Charge the refrigerant system. See REFRIGERANT SYSTEM CHARGE.

LINE-A/C SUCTION

DESCRIPTION

LINE-A/C SUCTION

Fig. 181: A/C Suction Line, Tapping Plate, Low-Side Service Port & Heat Shield
Courtesy of CHRYSLER LLC

The A/C suction line (1) is the refrigerant line that carries refrigerant from the A/C evaporator to the A/C
compressor. The A/C suction line and is secured to the A/C expansion valve by a tapping plate (2) and contains
the low-side service port (3) and a heat shield (4), depending on engine application.

The A/C suction line has no serviceable parts except for the rubber O-ring seals, metal gasket and the low-side
service port valve and its protective cap. 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 and gasket must be replaced whenever the A/C

NOTE:

4.0L engine shown. Other engines similar.

NOTE:

Replacement of the refrigerant line O-ring seals and gaskets is required anytime
a refrigerant line is opened. Failure to replace the rubber O-ring seals and metal
gaskets could result in a refrigerant system leak.

2007 Dodge Nitro R/T

2007 HVAC Heating & Air Conditioning - Service Information - Nitro