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Close-up of a spring-lock A/C line coupling and metal tube

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A/C Conversion to R-134aView all 15

Engine bay of a truck with hood open showing inline engine

Engine bay of older Ford pickup or SUV with inline engine, alternator and battery visible

Two-panel view of an A/C accumulator and condenser in an engine bay

Open engine bay of a blue truck showing V engine and accessories

Used automotive A/C condenser with hoses, drier and compressor on driveway

Labeled diagram of 80-96 Bronco and F-series A/C system components

A/C evaporator core and accumulator with orifice tube and o-ring kit

Truck engine bay showing A/C system retrofitted to R-134a refrigerant

Ford R-12 air conditioner caution charge label in English and French

Hand using white fin comb tool to straighten black radiator cooling fins

15photos in this albumView all

This orifice tube is blue (with black residue on most of it), indicating it's for R-12. Note the fine metal shavings on the filter screen, indicating 1) that the compressor has failed, & 2) that there are more shavings between the compressor & evaporator: in the high-side line, in the condenser, & in the condenser-to-evaporator line. The lines must be flushed to remove these filings so that the new compressor isn't damaged. But Ford says flushing the condenser is INeffective at removing the filings from it, so a new condenser is required.

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The reason this compressor failed was probably because of overcharging. I removed 3 lbs 4 oz from this system, which is 8 oz (1/2 lb) too much. This probably resulted in liquid refrigerant entering the compressor, causing it to hydraulic, which would explain the shavings.