Dodge Nitro. Manual - part 754

Fig. 103: Plastic Retaining Tabs, Heater Core & Air Distribution Housing 
Courtesy of CHRYSLER LLC 

7. Carefully install the heater core (2) into the passenger side of the air distribution housing (3) and engage 

the four plastic retainer tabs (1) that secure the heater core to the housing. Make sure the retaining tabs are 
fully engaged. 

Fig. 104: Air Distribution Housing Assembly 
Courtesy of CHRYSLER LLC 

8. Position the heater core tube flange (4) over the heater core tubes (6) and onto the to the passenger side of 

the air distribution housing (8).  

9. Engage the plastic retainer (5) around the heater core tubes. Make sure the retainer is fully engaged.  

10. Install the screw (2) that secures the heater core tube flange to the air distribution housing. Tighten the 

screw to 1.2 N.m (10 in lbs.).  

11. Install the upper front passenger side floor duct (7) onto the air distribution housing and install the two 

retaining screws (1). Tighten the screws to 1.2 N.m (10 in lbs.). 

12. Install the foam seal (3) onto the heater core tube flange. 

NOTE:

If the foam insulator around the heater core is deformed or damaged, the 
insulator must be replaced.

NOTE:

If the foam seal for the heater core tube flange is deformed or damaged, it 
must be replaced.

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Service Information - Nitro

  

Fig. 105: Removing/Installing Defrost Door Lever/Gear Assembly, Mode Door Cam, Panel Door 
Gear, Blend Door Gear, Blend Door Lever And Blend Door Cam From Driver Side Of Air 
Distribution Housing 
Courtesy of CHRYSLER LLC 

13. If equipped with the 2.8L diesel engine, install the electric positive temperature coefficient (PTC) heater 

unit. See INSTALLATION.  

14. Install the blend door cam (5), blend door lever (6), blend door gear (4), panel door gear (3), mode door 

cam (2), and the defrost door lever and gear assembly (1) onto the driver side of the air distribution 
housing (7). 

Fig. 106: HVAC Housing Assembly 
Courtesy of CHRYSLER LLC 

15. Install the driver side front floor duct (7) onto the driver side of the air distribution housing (4) and install 

the two retaining screws (8). Tighten the screws to 1.2 N.m (10 in lbs.).  

16. Position the actuator mounting bracket (5) onto the air distribution housing and install the three retaining 

screws (1). Tighten the screws to 1.2 N.m (10 in lbs.). 

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Service Information - Nitro

  

17. Position the mode door actuator (2) and the blend door actuator (6) onto the actuator mounting bracket. If 

necessary, rotate the actuator slightly to align the splines on the actuator output shaft with those on the 
door linkage.  

18. Install the screws (3) that secure the mode and blend door actuators to the actuator mounting bracket. 

Tighten the screws to 1.2 N.m (10 in lbs.).  

19. Install the air distribution housing onto the HVAC housing. See INSTALLATION.  

20. Install the HVAC housing assembly. See INSTALLATION.  

INSTALLATION 

SCREEN-AIR INLET 

Fig. 107: Air Inlet Screen, Nuts, Cowl Panel & Retaining Studs 
Courtesy of CHRYSLER LLC 

1. Position the air inlet screen (1) into the cowl panel (3) and fully engage the screen onto the two retaining 

studs (4).  

2. Install the air inlet screen onto the cowl panel and install the two retaining nuts (4). Tighten the nuts to 2.3 

N.m (20 in. lbs.).  

3. Install the cowl grille. Refer to INSTALLATION .  

HOUSING-AIR DISTRIBUTION 

NOTE:

LHD model shown. RHD model similar.

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Service Information - Nitro

  

Fig. 108: Air Distribution Housing Remove/Install Components 
Courtesy of CHRYSLER LLC 

1. Position the air distribution housing (8) onto the top of the HVAC housing (5) and engage the two plastic 

retaining tabs (2) that secure the front of the distribution housing to the HVAC housing.  

2. Engage the plastic retaining tab (1) that secures the front driver side of the air distribution housing to the 

HVAC housing. Make sure the passenger side floor ducts are properly connected to each other.  

3. Install the three metal retaining clips (7) and three screws (6) that secure the air distribution housing to the 

HVAC housing. Tighten the screws to 1.2 N.m (10 in. lbs.). 

4. Install the screw (4) that secures the heater core tube flange (3) to the top of the HVAC housing. Tighten 

the screw to 1.2 N.m (10 in. lbs.). 

5. Install the HVAC housing assembly. See INSTALLATION.  

HOUSING-HVAC 

NOTE:

LHD model shown. RHD model similar.

NOTE:

If the foam seal for the heater core tube flange is deformed or damaged, it 
must be replaced.

NOTE:

If the heater core is being replaced, flush the cooling system. Refer to 
CLEANING/REVERSE FLUSHING .

NOTE:

LHD model shown in illustrations. RHD model similar.

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Service Information - Nitro