Air Conditioner Evaporator

I had some time today so I decided to remove the evaporator so I can investigate having it modified for R134a gas.  The evaporator is housed inside the RH fender, around the corner from the HVAC.  Below is a pic looking to the rear of the RH fender cavity.

IMG_2689

First step is to remove the power antenna

IMG_2690

Next step is to undo the screws holding the unit in.  Once all are removed, the unit is easy to remove, and leaves a big hole.

IMG_2691

The evaporator unit is fully enclosed, and is quite compact.

IMG_2692  IMG_2693

4 bolts and nuts hold the case together.  Once I removed them it split open easily.  The evaporator is a genuine Harrison unit.

IMG_2694  IMG_2696  IMG_2697

I will speak to some AC specialists this week and see if the evaporator can be modified to suit a R134a system.

If the evaporator can be modified (removing the heat bypass pipes), then I should be able to get the AC working.  I anticipate I will need a new modern compressor, higher efficiency condensor, a new receiver/dryer and a full set of new hoses.  It won’t look original, but it is about getting it to work well.  I can see dollars!  😦

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