Dodge Nitro. Manual - part 763

Fig. 134: A/C Discharge Line, Nuts, A/C Suction Line & A/C Compressor 
Courtesy of CHRYSLER LLC 

13. Remove the jack stand and lower the vehicle.  

14. Remove the tape or plugs from the opened refrigerant line fittings and the compressor ports.  

15. Lubricate new O-ring seals with clean refrigerant oil and install them and new gaskets on 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.  

16. Connect the A/C discharge line (1) and the A/C suction line (3) to the A/C compressor (4).  

17. Install the nuts (2) that secure the A/C discharge and suction lines to the A/C compressor. Tighten the 

nuts to 12 N.m (105 in. lbs.).  

18. Install the accessory drive belt. Refer to INSTALLATION .  

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

INSTALLATION for 4.0L - SERVICE INFORMATION ).  

20. Reconnect the negative battery cable.  

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

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

2.8L ENGINE 

CAUTION: If the A/C compressor is being replaced, be certain to adjust the refrigerant 

system oil level. 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.

CAUTION: The A/C receiver/drier must be replaced if an internal failure of the A/C 

compressor has occurred. Failure to replace the A/C receiver/drier can 
cause serious damage to the replacement A/C compressor.

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Service Information - Nitro

  

Fig. 135: A/C Clutch Field Coil Connector, Bolts & A/C Compressor 
Courtesy of CHRYSLER LLC 

1. If the A/C compressor (3) is being replaced, the refrigerant oil in the old compressor must be first drained 

and measured. Then the oil in the new A/C compressor must be drained. Finally, the new compressor 
must be refilled with the same amount of new refrigerant oil that was drained out of the old compressor. 
See REFRIGERANT OIL LEVEL for more information. 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 Use only refrigerant oil of the type recommended for the A/C compressor in the 
vehicle.  

2. Position the A/C compressor onto the engine.  

3. Install the three bolts (2) that secure the A/C compressor to the engine. Tighten the bolts to 28 N.m (21 ft. 

lbs.).  

4. Connect the engine wire harness to the A/C clutch field coil connector (1). 

NOTE:

When replacing multiple A/C system components, refer to the Refrigerant Oil 
Capacities chart to determine how much oil should be removed from the new 
A/C compressor. 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.

NOTE:

LHD model shown in illustrations. RHD model similar.

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Service Information - Nitro

  

Fig. 136: Refrigerant Line System 
Courtesy of CHRYSLER LLC 

5. Remove the tape or plugs from the opened refrigerant line fittings and the compressor ports.  

6. Lubricate new O-ring seals with clean refrigerant oil and install them and new gaskets on 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.  

7. Connect the A/C suction line (4) and A/C discharge line (1) to the A/C compressor (3).  

8. Install the nuts (5) that secure the A/C suction and discharge lines to the A/C compressor. Tighten the 

nuts to 12 N.m (105 in. lbs.).  

9. On LHD models, install the two nuts (2) that secure the A/C suction line to the top of the engine. Tighten 

the nuts to 4.5 N.m (40 in. lbs.).  

10. Install the generator. Refer to INSTALLATION .  

11. Install the accessory drive belt. Refer to INSTALLATION .  

12. Install the radiator fan and fan shroud. Refer to INSTALLATION .  

13. Install the battery. Refer to INSTALLATION .  

14. Install the air inlet tube to the throttle body and the charge air cooler. Tighten the clamps securely.  

15. Install the air cleaner housing. Refer to INSTALLATION .  

16. Reconnect the negative battery cable.  

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

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

CONDENSER-A/C 

DESCRIPTION 

CONDENSER-A/C 

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Service Information - Nitro

  

Fig. 137: A/C Condenser Components 
Courtesy of CHRYSLER LLC 

The A/C condenser (1) is located in the front of the engine compartment behind the front fascia. The A/C 
condenser is a heat exchanger that allows the high-pressure refrigerant gas being discharged by the A/C 
compressor to give up its heat to the air passing over the condenser fins, which causes the refrigerant to cool 
and change to a liquid state. 

The A/C condenser is equipped with mounting provisions (2) to attach it to the radiator and has tapping blocks 
(3) for the A/C discharge line and for the receiver/drier (5). A spring lock coupler is used on the condenser 
outlet tube (4) for the A/C liquid line connection. See DESCRIPTION for more information. 

On automatic transmission equipped vehicles, the A/C condenser is also equipped with an integral automatic 
transmission cooler (6). 

OPERATION 

CONDENSER-A/C 

When air passes through the fins of the A/C condenser, the high-pressure refrigerant gas within the A/C 
condenser gives up its heat. The refrigerant then condenses as it leaves the A/C condenser and becomes a high-
pressure liquid. The volume of air flowing over the condenser fins is critical to the proper cooling performance 
of the A/C system. Therefore, it is important that there are no objects placed in front of the radiator grille 
openings at the front of the vehicle or foreign material on the condenser fins that might obstruct proper air flow. 
Also, any factory-installed air seals or shrouds must be properly reinstalled following radiator or A/C condenser 
service. 

The A/C condenser has no serviceable parts. 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 gaskets must be replaced whenever a 

NOTE:

Replacement of the refrigerant line O-ring seals and gaskets is required anytime 
a refrigerant line is disconnected. 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