OEM Chevrolet Astro Evaporator

Chevrolet Astro Evaporator Parts and Q&A

• Evaporator Core
  52480284
  Q: How to service and repair the auxiliary evaporator core on Chevrolet Astro?

  A:

  Recovery of the refrigerant from the system should be the first step when servicing or repairing the auxiliary evaporator core assembly. Start by removing the left body side rear trim panel together with the air outlet duct assembly and disconnect the electrical connectors. Lift and stabilize the vehicle before you unfasten the retaining nut to pull off the auxiliary evaporator rear tube assembly from the core. Lower the vehicle and take off the bolts which fasten the case to the vehicle then extract the auxiliary evaporator module assembly. Start by removing case screws before using your hands to divide the case into two sections for reaching and extracting the core seal together with its evaporator core. Gaskets and seals should be inspected for any damage before conducting replacements as needed. To install the evaporator core first add it into the case followed by proper installation of the evaporator core seal before constructing the separated case halves. Fasten the auxiliary evaporator module assembly to the vehicle while installing bolts to secure the case which need to be tightened to 10 N.m (86 lb in). When supporting the vehicle's height again you must mount the auxiliary evaporator underbody rear tube assembly to the core through the retaining nut while tightening it to 10 N.m (86 lb in). Return power connections then place the air outlet duct assembly together with the left body side rear trim panel. The last step includes evacuating and recharging the system while conducting a fitting leak test on the component with the Halogen Leak Detector (J 39400-A).
• Evaporator Core
  52465673
  Q: How to replace the evaporator core on Chevrolet Astro?

  A:

  The first step to replace the Evaporator core requires removing the air cleaner along with refrigerant recovery and coolant recovery reservoir removal. The first step involves disconnecting electrical cables then taking the compressor hose assembly out from the accumulator before removing the bypass valve bracket from the outer case. Commence by removing the Evaporator tube from both the accumulator then the relay bracket before taking out the tube from the Evaporator itself. Begin by unscrewing the outer Evaporator case and afterwards detach the outer case from the module. To split the Evaporator module in half, remove all screws along with taking out both the inner case and core parts. Place the Evaporator core in its correct position according to the fastener notice before fastening the inner case onto the Evaporator module while tightening screws to 6 nm (53 lb in). After fitting the Evaporator module with the outer case, you must fasten the screws at 6 nm (53 lb in). Install the Evaporator tube onto the Evaporator and afterwards connect the bypass valve bracket on the outer case before hooking up the Evaporator to the accumulator. Reinstall the compressor hose assembly to the accumulator before installing the relay bracket followed by electrical connectors. The process ends with the installation of the air cleaner after you refill engine coolant and evacuate the system and recharge it followed by reinstalling the coolant recovery reservoir.