Expansion Valve: Service and Repair

Applies to the Bortetti Evaporator





As from the 1985 model, the compensating pipe has been provided with the type of insulating material used on cars without protective cover. In addition, a piece of insulating material has been fitted to the temperature sensor coil above the evaporator outlet pipe. This has been done to prevent the pipes from coming into contact with one another, thus giving rise to noise.

To Change the Clarion Expansion Valve





1 Discharge the refrigerant from the system. Release the hose connection at the expansion valve.

2 Remove the two upper bolts and remove the top half of the cover.





3 Disconnect the capillary tube from the outlet pipe.





4 Disconnect the expansion valve from the evaporator.





5 Fold back the insulation felt and free the capillary tube from the clip.

6 Refit in the reverse order.

- Lubricate the couplings with refrigeration oil.

- Charge the system with refrigerant.