OEM 2005 Chevrolet Express 3500 A/C Orifice Tube

2005 Chevrolet Express 3500 A/C Orifice Tube Parts and Q&A

• Q: How to replace the A/C Orifice Tube in an A/C system on 2005 Chevrolet Express 3500?

  A: Rerecovery of refrigerant must take place before expansion (A/C orifice) tube replacement. First disconnect the Evaporator hose retaining nut followed by using the A/C Orifice Tube remover and installer (J 26549-E) to extract the expansion tube. Use the acquired heat from a heat gun or hair dryer pointing 7 mm (0.25 in) away from the inlet pipe dimples, nevertheless keep the pipe temperature below unsafe levels before using the A/C Orifice Tube remover and installer (J 26549-E) to remove the stuck expansion tube. The A/C Orifice Tube remover and installer (J 26549-E) combined with turning motions should be used to loosen and remove the expansion tube while heating the unit. Start by putting the short end of the screen into the Evaporator while applying 525 viscosity refrigerant oil onto the o-ring seal. The A/C Orifice Tube remover and installer (J 26549-E) enables you to install the new expansion tube before you apply new sealing washers to the Evaporator tube followed by reconnecting the Evaporator hose to the Evaporator. Secure the Evaporator hose retaining nut to a torque of 16 n.m using a 12 lb ft force. The a/c system evacuation and recharging process includes a fitting leak test through utilization of the halogen leak detector (J 39400-A).