OEM Cadillac CTS A/C Expansion Valve

Cadillac CTS A/C Expansion Valve Parts and Q&A

• Expansion Valve
  19129999
  Q: How to properly install an A/C Expansion Valve on Cadillac CTS?

  A:

  Starting the air conditioning Evaporator thermal expansion valve replacement requires first removing the hvac module. Before disposal the insulation should be taken off from the thermal expansion valve (TXV). The replacement of the air conditioning Evaporator thermal expansion valve begins by unscrewing the hvac line clamp screw and hvac line clamp. The process ends with taking out the bolts that fasten the txv to the Evaporator. Pull the txv straight out from the Evaporator core by detaching the line bracket until it separates from the a/c lines. Apply lubrication on the o-rings before connecting the lines to the txv and gently slide the txv onto the Evaporator core until it reaches full position. Mount the txv line bracket on the Evaporator core while following the specified fastener precautionary steps. Use bolts with torque of 3.5 nm (31 lb in) to secure the txv to the Evaporator. Reattach the hvac line clamp by fastening the clamp screw to 1 nm (8 lb in). To complete the installation you should reinstall the hvac module followed by new insulation applied to the affected lines and txv.
• Expansion Valve
  25740393
  Q: How to replace the A/C Expansion Valve on Cadillac CTS?

  A:

  The process requires the halogen leak detector (J 39400-A) with other needed tools to replace the thermal expansion valve (TXV). Start by removing the i/p retainer before proceeding to take off the insulation from the txv. The hvac line clamp process starts with removing clamp screw and clamp. To begin replacement of the txv start by unboltting the device from Evaporator core using txv to Evaporator bolts and then detaching the txv line bracket before pulling the txv straight out from the a/c lines. Lubricate all o-rings before putting the a/c lines on the brand-new expansion valve. Push the txv onto the Evaporator core until full seating and then secure the txv line bracket. Securing the two txv to Evaporator bolts requires torque to reach 3.5 n.m (31 lb in). The hvmc line clamp requires reattachment using its specified screw while tightening it to 1 n.m torque (8 lb in). End the process by replacing insulation onto the lines and txv followed by i/p retainer reinstallation.