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Low side valve location?

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Old 06-08-2010, 12:48 PM   #1
Millville, NJ
2003 Mountaineer
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Low side valve location?

Just want to make sure I have the right valve for recharging my ac on a 2003 Mountaineer. I see one on the small cannister on the passenger side next to the washer fluid fill and another on the driver side on a tube just behind the radiator and in front of the ac compressor. Which do I use?
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Old 08-14-2010, 09:48 PM   #2
Sterling Heights, MI
1997 Eddie Bauer 5.0 AWD
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I, just came in from an attempt and was asking the same thing. Did someone answer you?
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Old 08-14-2010, 10:16 PM   #3
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The low side port is usually located on the accumulator. That is a cylinder with a switch mounted on top. Usually on the passenger side.
The low side and high side ports are also not the same size. A manifold gage will only fit on the correct port. The low side is 13mm and the high side is 16mm. The low side is used for charging the system.
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Old 08-22-2010, 08:10 PM   #4
2004 XLT
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I just did this on my 2004 explorer. The low side is on top of the can on the passenger side in the front. The hi side, which I didn't bother with, is on the driver side in the front.

Hope this helps.
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