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Ford Expedition The Expedition provides the feel of a full size truck with the seating of a large SUV.

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Old 05-13-2018, 02:23 PM
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Default A/C Help

Can someone tell me what the can on the A/C compressor discharge line is?
2011 Expedition.

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Old 05-14-2018, 05:35 AM
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It's a built in line muffler. You may even have one on your low pressure side also. Some systems have one on both, some don't.
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Old 05-14-2018, 07:34 AM
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Thanks UCS. I have been Diesel mechanic for over 20 years. I've repaired A/C's on Internationals, Kenworths, Freightliners etc.
I have never seen one before, so it had me scratching my head. I suppose it has something to do with the type of compressor?

The compressor shelled out, so I will be replacing it, the condensor, expansion valves, and flushing the rest of the system.
Is the line muffler just a hollow can that can be flushed, or do I need to replace that line also?
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Old 05-14-2018, 11:16 PM
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Any line with a muffler is a non-flushable line. Debris will set in dead spots and not come out/free until the system is live. Then you'll plug up the orifice, or expansion valve (or both depending on the system and front or dual A/C). Then you cause oil starvation to the new compressor causing it to fail.

You should also replace the dryer/accumulator any time an A/C system is opened or repaired.
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Old 05-15-2018, 10:28 AM
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Thanks UCS, I appreciate the help and information.
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Old 05-15-2018, 11:08 PM
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You got it...
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