GM 3096068
Filter

Service and repair operations for the expansion block/A/C orifice tube require the recovery of refrigerant first. To service and repair the expansion block A/C orifice tube you need to use the A/C Orifice Tube Remover (J 26549-E) while working with the evaporator tube fitting nut. Then use the remover to take out the A/C orifice tube from the fitting. Cap or plug the open line. Start the installation process by opening the evaporator tube and use the new O-ring seal for fitting. Fit the short-screened end of the new A/C orifice inside the evaporator tube then attach the evaporator tube fitting before torquing it to 25 N.m (18 lb ft). Use a Halogen Leak Detector (J 39400-A) to test for leaks on the repaired component fittings after the system evacuation and recharge process.

To replace the A/C orifice tube, recover the refrigerant and defeat the nut from the evaporator tube fitting. Use the J26549-E to extract the A/C orifice tube from the evaporator tube. Cap or plug the line open then uncap and unplug the evaporator tube, add a new o-ring seal. Fit new A/C orifice short screen end into evaporator tube and connect evaporator tube at fitting, tighten to 25 N.m (18 lb ft). Lastly, evacuate and recharge the system and carry out a leak test on the fittings of the repaired component by means of Halogen Leak Detector (J 39400-A).

The first step for servicing the Expansion Block and A/C Orifice Tube requires steam valve recovery of the coolant. The A/C Orifice Tube Remover (J 26549-E) enables technicians to extract the A/C orifice tube from the evaporator tube after loosening the fitting nut. Cap or plug the open line. To perform installation you need to first uncap or unplug the evaporator tube after which you should install the new O-ring along with inserting the short-screened end of the new A/C orifice tube to the evaporator. Fitting of the evaporator tube requires torque at 25 N.m until it reaches 18 lb ft tightness. To conclude this process evacuate the system while recharging it before testing fittings with the Halogen Leak Detector (J 39400-A).

You should start by removing the evaporator tube first before disconnecting it from the condenser tube when you want to replace the expansion A/C orifice tube. The A/C Orifice Tube Remover (J 26549-E) serves to withdraw the tubing expansion orifice. Check the tube for plastic damage, torn filter screens or a blocked filter screen and a damaged brass A/C orifice tube. Any damage should result in replacement of the tube. Adding a new O-ring to the tube becomes mandatory when planning to reuse the tool after cleaning the filter screen with low-pressure shop air. The installation requires a light application of mineral base 525 viscosity refrigerant oil on the new O-ring seal before removing any protective cap from the evaporator tube. Use needle-nose pliers to handle the expansion A/C orifice tube at its edge without touching the filter screen before placing the tube (live filter screen facing away from the unit) entirely into the evaporator line. Seal the tube fittings with a clean lint-free cloth after which position an O-ring on the condenser tube that has been treated with 525 viscosity refrigerant oil. After piping the evaporator tube replace it properly while you evacuate and recharge the A/C system followed by a leak test on fittings using Halogen Leak Detector (J 39400-A). Complete the installation of the hood close out filler panel as the last step.

Begin a replacement of the A/C orifice tube by recovering all refrigerant first. You need to loosen the evaporator tube fitting nut before you can take out the A/C orifice tube using the Orifice Tube Remover (J 26549-E). Cap or plug the open line. Installation begins with uncapping the evaporator tube after which you should use new 525 viscosity refrigerant oil to lubricate the new O-ring before fitting it into place. The short screen portion of the new A/C orifice tube needs to receive 525 viscosity refrigerant oil before insertion into the evaporator tube. Install the evaporator tube into its fitting before securing it with 25 N.m of torque (18 lb ft). The system evacuation and recharging process should be followed by fitting leak tests using a Halogen Leak Detector (J 39400-A).

The first step to change an A/C Orifice Tube requires refrigerant recovery. The nut from the evaporator tube fitting requires loosening for the Orifice Tube Remover (J 26549-E) to remove the A/C Orifice Tube from the evaporator tube and you should cap or plug the open line. Refrigerant oil with 525 viscosity should be applied to the new O-ring before installing the evaporator tube. The tube must be uncapped or unplugged for installation purposes. Begin by setting the A/C Orifice Tube inside the evaporator tube where you must place 525 viscosity refrigerant oil on the O-ring before inserting the short screen section of the new A/C Orifice Tube through the tube opening. Connect the evaporator tube using the fitting while tightening it to 25 N.m (18 lb ft). Complete the procedure by evacuating and recharging the system then inspecting all repaired component fittings with the Halogen Leak Detector (J 39400-A).

The first step for servicing the Expansion Block and A/C Orifice Tube requires steam valve recovery of the coolant. The A/C Orifice Tube Remover (J 26549-E) enables technicians to extract the A/C orifice tube from the evaporator tube after loosening the fitting nut. Cap or plug the open line. To perform installation you need to first uncap or unplug the evaporator tube after which you should install the new O-ring along with inserting the short-screened end of the new A/C orifice tube to the evaporator. Fitting of the evaporator tube requires torque at 25 N.m until it reaches 18 lb ft tightness. To conclude this process evacuate the system while recharging it before testing fittings with the Halogen Leak Detector (J 39400-A).

Begin a replacement of the A/C orifice tube by recovering all refrigerant first. You need to loosen the evaporator tube fitting nut before you can take out the A/C orifice tube using the Orifice Tube Remover (J 26549-E). Cap or plug the open line. Installation begins with uncapping the evaporator tube after which you should use new 525 viscosity refrigerant oil to lubricate the new O-ring before fitting it into place. The short screen portion of the new A/C orifice tube needs to receive 525 viscosity refrigerant oil before insertion into the evaporator tube. Install the evaporator tube into its fitting before securing it with 25 N.m of torque (18 lb ft). The system evacuation and recharging process should be followed by fitting leak tests using a Halogen Leak Detector (J 39400-A).

The first step for servicing the Expansion Block and A/C Orifice Tube requires steam valve recovery of the coolant. The A/C Orifice Tube Remover (J 26549-E) enables technicians to extract the A/C orifice tube from the evaporator tube after loosening the fitting nut. Cap or plug the open line. To perform installation you need to first uncap or unplug the evaporator tube after which you should install the new O-ring along with inserting the short-screened end of the new A/C orifice tube to the evaporator. Fitting of the evaporator tube requires torque at 25 N.m until it reaches 18 lb ft tightness. To conclude this process evacuate the system while recharging it before testing fittings with the Halogen Leak Detector (J 39400-A).

Begin a replacement of the A/C orifice tube by recovering all refrigerant first. You need to loosen the evaporator tube fitting nut before you can take out the A/C orifice tube using the Orifice Tube Remover (J 26549-E). Cap or plug the open line. Installation begins with uncapping the evaporator tube after which you should use new 525 viscosity refrigerant oil to lubricate the new O-ring before fitting it into place. The short screen portion of the new A/C orifice tube needs to receive 525 viscosity refrigerant oil before insertion into the evaporator tube. Install the evaporator tube into its fitting before securing it with 25 N.m of torque (18 lb ft). The system evacuation and recharging process should be followed by fitting leak tests using a Halogen Leak Detector (J 39400-A).

The first step to change an A/C Orifice Tube requires refrigerant recovery. The nut from the evaporator tube fitting requires loosening for the Orifice Tube Remover (J 26549-E) to remove the A/C Orifice Tube from the evaporator tube and you should cap or plug the open line. Refrigerant oil with 525 viscosity should be applied to the new O-ring before installing the evaporator tube. The tube must be uncapped or unplugged for installation purposes. Begin by setting the A/C Orifice Tube inside the evaporator tube where you must place 525 viscosity refrigerant oil on the O-ring before inserting the short screen section of the new A/C Orifice Tube through the tube opening. Connect the evaporator tube using the fitting while tightening it to 25 N.m (18 lb ft). Complete the procedure by evacuating and recharging the system then inspecting all repaired component fittings with the Halogen Leak Detector (J 39400-A).

Install a new O-ring seal, also coated with 525 viscosity refrigerant oil.

Carefully insert the new orifice tube (short filter screen inlet side first) fully into the evaporator line, then remove the cap or tape from the evaporator tube.

Evacuate and recharge the A/C system, conduct a leak test on the fittings using the Halogen Leak Detector (J 39400-A), and install the hood close-out filler panel.

Evacuate and recharge the system.

Use the Orifice Tube Remover (J 26549-E) to remove the orifice tube.

Insert the short screen end of the new orifice into the evaporator tube.

Uncap or unplug the evaporator tube.

Perform a leak test on the fittings of the repaired component using the Halogen Leak Detector (J 39400-A).