Chrysler Concorde/Intrepid/LHS/New Yorker/Vision 1993-1997

Quick-Connect Fittings

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See Figures 1 and 2



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Fig. Fig. 1: Exploded view of a quick-connect fitting; the O-rings are a non serviceable item



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Fig. Fig. 2: The quick-connect fitting consists of the O-rings, casing, disconnect tool and a retainer

Different types of quick-connect fittings are used to attach different types of fuel system components. A single tab type, a two-tab type or a plastic retainer ring type. Some of these are equipped with latch clips.

Fuel tubes connect the fuel system components with plastic quick-connect fuel fittings. The fitting contains a non-serviceable O-ring seals. The quick-connect fitting consists of the O-rings, retainer and casting. When the fuel tube enters the fitting, the retainer locks the shoulder of the nipple in place and the O-rings seal the tube.

The fuel filter outlet and rail use metal quick-connect fittings. The fitting contains non-serviceable sealed O-rings. The fittings contain a plastic disconnect tool (release ring). Use special tool 6751 or equivalent to disconnect and connect the fittings at the fuel rail. The special tool could also be used at the fuel filter outlet.

The quick-connect fitting consists of the O-rings, casing, disconnect tool and a retainer. When the fuel tube enters the fitting, the retainer locks the shoulder of the nipple in place and the O-rings seal the tube.

Quick connect fittings are not serviced separately. Do not attempt to repair a damaged quick-connect fitting or fuel tube. Replace the complete fuel tube/quick-connect fitting assembly.

When installing the fuel tubes, route them in the holders along the frame rail, fuel tank and the rear of the engine.

REMOVAL & INSTALLATION



When the fittings are disconnected, the retainer will stay on the nipple of the component that the tube is being disconnected from. A fuel tube should never be inserted into a quick-connect fitting without the retainer being either on the tube or already in the quick-connect fitting. In either case, care must be taken to ensure that the retainer is locked securely into the quick-connect fitting.

Plastic Retainer Ring Type

See Figure 3



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Fig. Fig. 3: Firmly push the fitting towards the component being serviced while firmly pushing the plastic retainer ring into the fitting

This type of fitting can be identified by the use of a full rounded plastic retainer ring usually black in color.

  1. Disconnect the negative battery cable.
  2.  
  3. Relieve the fuel system pressure.
  4.  
  5. Clean the fitting of any foreign materials before disassembly.
  6.  
  7. To release the fuel system component from the fitting, firmly push the fitting towards the component being serviced while firmly pushing the plastic retainer ring into the fitting. With the plastic ring depressed, pull the fitting from the component.
  8.  

The plastic retainer ring must be pressed squarely into the fitting body. If this retainer is cocked during removal, it may be difficult to disconnect the fitting. Use an open-end wrench on the shoulder of the plastic retainer ring to aid in disconnection.

  1. After disconnecting, the plastic retainer ring will remain with the fitting connector body.
  2.  
  3. Inspect the connector body, plastic retainer ring and fuel system component for damage. Replace as needed.
  4.  
  5. Before connecting the quick-connect fitting to the component being serviced, check the condition of the fitting and component. Clean the parts with a lint free cloth, then lubricate them with clean engine oil.
  6.  
  7. Insert the fitting into the component being serviced until a click is felt.
  8.  
  9. Verify a locked condition by firmly pulling on the fuel tube and fitting (15-30 lbs.).
  10.  
  11. Connect the negative battery cable.
  12.  
  13. Start the engine and check for leaks.
  14.  

Window Type Fittings

See Figure 4



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Fig. Fig. 4: When the fitting completely attaches to the fuel tube, the retainer locking ears and the fuel tube shoulder are visible in the windows

  1. Disconnect the negative battery cable.
  2.  
  3. Perform the fuel pressure release procedure.
  4.  
  5. Squeeze the retainer tabs together and pull the quick-connect fitting apart. Note that the retainer tabs stay on the nipple.
  6.  

To install:
  1. Using a clean lint-free cloth, wipe the tube end (nipple) and retainer clean.
  2.  
  3. Apply a light film of clean SAE 30 weight engine oil to the tube end.
  4.  


WARNING
Do not use any other lubricant than engine oil.

  1. Push the quick-connect fitting over the fuel tube until the retainer seats and a click is heard.
  2.  
  3. This quick-connect fitting has windows on the side of the casing. When the fitting completely attaches to the fuel tube, the retainer locking ears and the fuel tube shoulder are visible in the windows. If they are not visible, the retainer was not properly installed. Do not rely upon the audible click to confirm that a secure connection has been made. Pull back on the quick-connect fitting to further ensure that the connection is complete and the connector is locked in place.
  4.  

  1. Using the DRB III or equivalent scan tool ASD fuel system test to pressurize the fuel system.
  2.  
  3. Connect the negative battery cable.
  4.  
  5. Inspect the system for fuel leaks.
  6.  

Metal Fittings

See Figures 5, 6 and 7



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Fig. Fig. 5: Slightly twist the fitting while maintaining a downward pressure on the special tool to remove



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Fig. Fig. 6: Place the tool on the largest diameter of the quick-connect fitting for installation



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Fig. Fig. 7: Place the special tool between the shoulder of the disconnect tool and the top of the quick-connect body

  1. Disconnect the negative battery cable.
  2.  
  3. Release the fuel system pressure.
  4.  
  5. Remove any dirt from the quick-connect fittings.
  6.  

Wrap shop towels around the hoses to catch any spilt fuel.

  1. At the fuel rail, push the connect fitting toward the fuel tube while depressing the built in disconnect tool with special tool 6751 or equivalent. To disconnect the fitting from the fuel rail, slightly twist the fitting while maintaining downward pressure on the special tool.
  2.  
  3. Cover the fitting to prevent any contamination.
  4.  

To install:
  1. Ensure the black plastic release ring is in the OUT position. If the locking retainer is stuck in the RELEASE position due to mushrooming of the disconnect tool or dirt accumulation, replace the fitting and tube assembly.
  2.  
  3. Lubricate the fuel tube nipple with clean 30 weight engine oil.
  4.  
  5. Start the quick-connect fitting on the fuel rail nipple by hand.
  6.  
  7. Place the special tool 6751 or equivalent below the largest diameter of the quick-connect fitting.
  8.  
  9. Pull the special tool toward the fuel tube nipple until the fitting clicks into place. When the fitting clicks into place, the retainer holds the fuel nipple shoulder in place and the O-rings seal the tube.
  10.  
  11. Place the special tool between the shoulder of the disconnect tool and the top of the quick-connect body.
  12.  
  13. Inspect the condition by pushing down on the special tool. When inspecting the connection, a slight downward movement of the fitting occurs until the retainer in the fitting contact the shoulder. All movement should then stop. If the quick-connect fitting comes off of the fuel rail, attach it according to the installation procedure. Ensure the black plastic disconnect tool is not causing the retainer fingers to jam in the release position.
  14.  
  15. Use the DRB III or equivalent scan tool ASD fuel system test to pressurize the fuel system.
  16.  
  17. Check for leaks.
  18.  

 
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