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Old 07-31-2015, 03:29 PM   #1
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Post Dash Air recharge

I have a 1998 American Coach, Dream model. I need to recharge the dash air system but cannot find the service points to connect the gages and new Freon. I found the low side at the dryer on the bulkhead in plain view. However, I cannot find the high side connection. American Coach service said that they should be together, either under the dash or in the forward storage compartment on the drivers side. They are not in the forward compartment and I was unable to locate them under the dash. Does anyone have information where these service connections might be located?

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Old 07-31-2015, 04:33 PM   #2
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if you are on a Spartan chassis check at the engine compartment near the air conditioner compressor.

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Old 07-31-2015, 08:12 PM   #3
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Look close at the back of the compressor.

The high side is a hose from compressor to the condenser so usually not a lot of places to hide it.

Most of the time is is at the back of the compressor or in the hard line part of the hose between compressor and condenser.
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Old 08-01-2015, 03:23 PM   #4
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If you are just adding Freon all you will need is the low side port. If you feel there is a problem that you need to diagnosis then you'll need both.

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Old 08-01-2015, 03:40 PM   #5
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Is this an Evans Tempco AC system?
The high side on my system was on the drier inlet hose fitting.
The low side was by the evaporator on the fitting going into the expansion valve.
Low side.
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High side barely visible on back side of drier
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dash, dash air

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