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