GM 10411717
Orifice

The first step toward A/C Orifice Tube replacement involves removal of air cleaner and duct assembly and subsequent removal of the cross vehicle brace when present. Perform a recovery of refrigerant then remove both the vacuum Brake Booster alongside the condenser tube. You can remove the A/C Orifice Tube with help from needle-nose pliers which need twisting and pushing movements to detach it. Check the tube for a cracked plastic frame alongside thinking about replacing it when you find a damaged or blocking inlet filter or a coated inlet filter present. I will clean the inlet filter by blowing it with low pressure shop air before discarding all o-ring seals from the tube. Put mineral base 525 viscosity refrigerant oil on new o-ring seals before putting the A/C Orifice Tube into the condenser tube by carefully holding the tube edge without touching the inlet filter (porous plastic). Attach the condenser tube followed by system evacuation and replacement along with a/c system leak inspection procedures. The final installation includes reinstallation of the cross vehicle brace if equipped together with the air cleaner and duct assembly.

The first step to replace the A/C Orifice Tube requires the removal of the condenser tube. The technician should employ the Orifice Tube Remover (J 26549-E) to pull out the A/C Orifice Tube. Check whether the tube shows signs of damage because a broken plastic frame requires a new tube. A replacement tube is necessary if the inlet filter shows damage from fine gritty material buildup or if the filter itself becomes damaged. The inlet filter must get cleaned with low-pressure shop air until it shows proper cleaning results when removing metal particles before reusing it without replacing the O-ring seals. Never apply solvents or chemicals when you need to clean the porous plastic inlet filter of the A/C Orifice Tube. It is necessary to install fresh O-ring seals when reusing an A/C Orifice Tube after cleaning while using mineral base 525 viscosity refrigerant oil for lubrication. Place the A/C Orifice Tube in the condenser tube while holding its edge only and ensuring that the inlet filter remains untouched until complete insertion before replacing the condenser tube.

You must take out the condenser tube before replacing the A/C Orifice Tube. Use the Orifice Tube Remover (J 26549-E) according to the instructions to remove the A/C Orifice Tube from the system. The tube needs to be inspected for damage. Replacing the tube is necessary when the plastic frame breaks. A damaged or clogged inlet filter in the tube requires a new replacement. The inlet filter should only receive low pressure shop air cleaning when metal chips or small fragments stain the surface. Use the filter again after satisfactory cleaning but DO NOT reuse its O-ring seals. Any cleaning of the porous plastic inlet filter on the A/C Orifice Tube needs to be done without the use of solvents or chemicals. The A/C Orifice Tube must get new O-ring seals before reinstallation during which time you should use mineral base 525 viscosity refrigerant oil to lubricate them. Before inserting the A/C Orifice Tube into the condenser tube proper placement must be achieved by handling its edge near the tube end while avoiding contact with the inlet filter.

Proceed with expansion (A/C orifice) tube replacement after you remove the air cleaner and duct assembly along with the cross vehicle brace. After recovering the refrigerant you should remove both the vacuum Brake Booster and the condenser tube from the vehicle. Needle-nose pliers should be used to grasp the A/C Orifice Tube so you can both turn and push it until it separates from its housing before removal. Check the expansion tube for plastic frame damage and replace it if required while inspecting for a plugged inlet filter or a coated inlet filter which should also be replaced when necessary. When the tube can be reused you should clean the inlet filter using low pressure shop air before discarding the o-ring seals. Insert the new o-ring seals into their positions by applying mineral base 525 viscosity refrigerant oil followed by a careful insertion of the A/C Orifice Tube into the condenser tube while avoiding contact with the inlet filter. Install the condenser tube followed by the vacuum Brake Booster and carry out system evacuation before recharging. Once leak inspection of the a/c system is complete the technician should reinstall the cross vehicle brace followed by the air cleaner and duct assembly.

The first step to replace the A/C Orifice Tube demands proper refrigerant recovery. The first step is to remove the air cleaner assembly then proceed with the vacuum Brake Booster and the condenser tube. The needle-nose pliers (J 39400-A) should be used to hold the A/C Orifice Tube until a turning motion combined with a gentle push will loosen it enough to remove the tube. Check the A/C Orifice Tube for a broken plastic frame, damaged or clogged inlet filter and filter coated with metal debris before deciding whether to replace it. After tube reuse the operator needs to clean the inlet filter through low-pressure filtered shop air and needs to discard o-ring seals. The o-ring seals should be lubricated with mineral base 525 viscosity refrigerant oil before installation using a careful insertion of the A/C Orifice Tube into the condenser tube while avoiding the contact area of the inlet filter. Put back the condenser tube and the vacuum Brake Booster as well as the air cleaner assembly. To complete the procedure evacuate and recharge the a/c system followed by using the halogen leak detector (J 39400-A) for fitting leak tests.

Expanding the availability of tools needed to repair the expansion block/A/C Orifice Tube includes the usage of halogen leak detector (J 39400-A) and A/C Orifice Tube remover (J 26549-E). The process starts with recovery of refrigerant followed by removal of the air cleaner assembly together with vacuum Brake Booster and condenser tube. The A/C Orifice Tube remover (J 26549-E) can separate the expansion tube from the system. Examine the tube for a broken plastic frame and examine the inlet filter for damage and metal debris buildup; replace or reuse the tube along with cleaning the filter with low-pressure shop air by avoiding repeated use of o-ring seals. Rephrase the o-ring seals before installation by applying mineral base 525 viscosity refrigerant oil. To reinstall the A/C Orifice Tube, install new o-ring seals before you insert the expansion tube into the condenser tube without coming in contact with the inlet filter while reassembly includes returning the condenser tube and vacuum Brake Booster and air cleaner assembly. Evacuation and recharging of the a/c system should follow testing the fittings with halogen leak detector (J39400-A).

The condenser tube needs removal as the first step when replacing the A/C Orifice Tube. An operator should use the Orifice Tube Remover (J 26549-E) to extract the A/C Orifice Tube. The porous plastic inlet filter of the A/C Orifice Tube must never receive cleaning with solvents or chemicals. The tube requires inspection for detectable plastic frame breakage and filter clarity. Replacement of either defect is necessary. The A/C Orifice Tube inlet filter may be reused after cleaning with low-pressure shop air yet discarding the O-ring seals. The installation process requires application of mineral base 525 viscosity refrigerant oil to the new O-ring seal. Reinstall the new O-ring seals whenever you decide to keep the use of the A/C Orifice Tube. Place the A/C Orifice Tube edge carefully upon the condenser tube while ensuring your hands avoid the inlet filter and push it until you achieve full seat. After repositioning the condenser tube conduct a leak test on component fittings through the Halogen Leak Detector (J 39400-A).

Inspect the tube for a broken plastic frame, a damaged or plugged inlet filter, or an inlet filter coated with metal debris.

Replace the tube if necessary.