Dodge Nitro. Manual - part 767

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

6. Install the protective cap (1) onto the service port.  

COUPLER-REFRIGERANT LINE 

DESCRIPTION 

COUPLER- REFRIGERANT LINE 

Fig. 150: A/C Liquid Line, A/C Condenser Outlet Tube & Spring-Lock Type Refrigerant Line Coupler 
Courtesy of CHRYSLER LLC 

The A/C liquid line (1) is attached to the A/C condenser outlet tube (2) by use of a spring-lock type refrigerant 
line coupler (3). A secondary retaining clip is installed over the connected coupler for added protection. 

The spring-lock refrigerant line coupler requires a special disconnect tool for disengaging the two coupler 
halves. 

OPERATION 

COUPLER- REFRIGERANT LINE 

NOTE:

The protective cap helps aid in service port sealing and helps protect the 
refrigerant system from contamination. Remember to always reinstall the 
protective cap onto the service port when refrigerant system service is 
complete.

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Service Information - Nitro

  

Fig. 151: Refrigerant Line Coupler Components 
Courtesy of CHRYSLER LLC 

The spring-lock type refrigerant line coupler is held together by a garter spring (6) inside a circular cage (7) on 
the male half of the fitting (1). When the two coupler halves are connected, the flared end of the female fitting 
(2) slips behind the garter spring inside the cage on the male fitting. The garter spring and cage prevent the 
flared end of the female fitting from pulling out of the cage. Some applications use a connection indicator ring 
(4) to help indicate when the two coupler halves are fully connected. 

O-rings (8) are used to seal the coupler connections. These O-rings are compatible with R-134a refrigerant and 
must be replaced with O-rings made of the same material. 

A secondary retaining clip (3) is installed over the connected coupler (5) for added protection. 

REMOVAL 

COUPLER- REFRIGERANT LINE 

WARNING:

Refer to the applicable warnings and cautions for this system before 
performing the following operation. See WARNING, and CAUTION. Failure 
to follow the warnings and cautions could result in possible personal 
injury or death.

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Service Information - Nitro

  

Fig. 152: Coupler Cage, Coupler, Garter Spring & Refrigerant Line Coupler 
Courtesy of CHRYSLER LLC 

1. Recover the refrigerant from the refrigerant system. See REFRIGERANT SYSTEM RECOVERY.  

2. Remove the secondary retaining clip from the spring-lock type refrigerant line coupler.  

3. Fit the proper size A/C line disconnect tool (Special Tool Kit 7193 or equivalent) over the coupler cage 

(1).  

4. Close the two halves of the A/C line disconnect tool around the coupler (2). 

NOTE:

The garter spring may not release if the A/C line disconnect tool is cocked 
while pushing it into the coupler cage opening.

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Service Information - Nitro

  

5. Push the A/C line disconnect tool into the open side of the coupler cage to expand the garter spring (3). 

Once the garter spring is expanded, pull on the refrigerant line attached to the female half of the coupler 
until the flange on the female fitting is separated from the garter spring and cage on the male fitting.  

6. Open and remove the A/C line disconnect tool from the refrigerant line coupler (4).  

INSTALLATION 

COUPLER- REFRIGERANT LINE 

Fig. 153: Refrigerant Line Coupler Components 
Courtesy of CHRYSLER LLC 

1. Clean any dirt or foreign material from the spring-lock type refrigerant line coupler.  

2. Check to make sure that the garter spring (6) is located within the cage (7) of the male half of the 

refrigerant line coupler (1), and that the garter spring is not damaged. 



If the garter spring is missing, install a new spring by pushing it into the coupler cage opening.  



If the garter spring is damaged, remove it from the coupler cage with a small hook (DO NOT use a 
screwdriver) and install a new garter spring.  

CAUTION: Use only the specified O-rings as they are made of a special material 

 

2007 Dodge Nitro R/T 

2007 HVAC Heating & Air Conditioning - Service Information - Nitro