Thursday, April 16, 2026

AC Rebuild & 134A Conversion - Part 4

After work the last two days, I accomplished a fair amount on the Mustang.  I'm nearing the final point of both the AC and interior projects.  This is the best part of the project where everything is clean and you are bolting up restored or new parts.  

The first item to install was the condenser using the brackets I painted and new hardware from LMR.  Once it was installed, I mounted the radiator back in place using the new hardware the previous owner installed.  The installation of these wasn't a priority with everything else to do but I wanted them out of the way as I don't want any damage to the fins of either of them.

Next was the backets for the air compressor and the air compressor itself.  I did take some time to clean the engine block, power steering pump, and the new water pump but it didn't make much difference.  I did notice the new compressor seemed lighter than the original and found it is 2.8 lbs. lighter (17.3 lbs. for the original and 14.5 lbs. for the new one).

Things then started moving a bit faster as I installed the shroud, water pump pulley, fan clutch, fan, and then the serpentine belt.  I then put back in the radiator overflow tank, battery tray, and then the battery.  I replaced the flex loom on the wires to the compressor and coolant reservoir as they were in bad shape.  

The last part of this job is installing the three hoses and the accumulator.  All the hoses are double sealed in plastic bags to keep humidity out of the lines.  I'm hesitant to install them right this moment unless I can get them all installed quickly and get the system sealed.  

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AC Rebuild & 134A Conversion - Part 4

After work the last two days, I accomplished a fair amount on the Mustang.  I'm nearing the final point of both the AC and interior proj...