traviss76
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- Aug 1, 2009
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This filter known as the orifice tube gets clogged more often then I thought. This is the second truck in which this tube was clogged with black goo and some cat hair??? Not really cat hair but dude that would be weird. The tube filter is usually inside the bottom line of the evaporator. Just inside the coupling. Make sure it goes in by the arrow indicator. The smaller filter pointed at the evaporator. I blow the old oil out with compressed air and add new oil around 8 ounces. About two cans of r134 cools good. Make sure if replacing the hose assembly to save the old one. Oil usually forms around leaks.