Question about 1991 Ford F250
Charging the ac were is the low side
The low side on this year is on the larger lines of the two sizes,it will be the 1/4 in service port,the larger of the two ports the small service port is on the small line ,it is the high side ,,but that is for r12 system which it came out with,if it has been retofitted to 134a freon use it will have a different kind of service port the large line will have the smaller of the two ports it is the low side ,looks like a quick connect,,,,if it hasnt been changed over ,go to parts store and ask for service port retrofit for 134s low side ,if u do not have gauges dont get the high side service port,,,if so ask for 3/16 size high side retofit .
Posted on Jul 04, 2009
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Posted on Jan 02, 2017
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