Chassis AC not cooling properly on 2017 Vegas 24.1

[JoeDS]

My chassis AC will not cool properly in warm weather. At best only 10 degrees difference between discharge and ambient temperature (using a refrigeration duct thermometer). Even with outside air turned off. Once the sun goes down it will drop to 20 to 25 degrees cooler. Our last trip was to Newfoundland in May. Hardly a hot place. Hate to think about going out west!

1. Is the Chasses AC system Fords or Thors responsibility?

2. Wanted to hook up my Refrigeration gauges to check pressure but the Low pressure connection is almost impossible to access. Way back in the center area below the defrost duct well buried under several hoses. Anyone else been there and have some ideas?

[Beau388]

Ford only supplies the A/C compressor. Everything else is purchased by Thor Motor Coach from an aftermarket A/C system vendor. It is usually up to the dealer to repair the system. To my knowledge Thor does not stock repair parts for chassis A/C. Since very few dealers have certified A/C techs, Thor Motor Coach will usually authorize you to take your coach to a certified truck air conditioner specialist for evaluation. If you save the parts that were replaced and return them to Thor, Thor will reimburse you in about a month. The reason it works that way is Thor returns the bad parts to the vendor for credit. Works that way for non-Thor dealers working on Thor coaches under warranty, also.

[Muggs]

I had same issue with my 2016 Vegas. Getting fitting on is possible. Added R-134a untill sight glass cleared, is fine now. Go easy as it is very easy to ocercharge. Watch high side pressure during charging.

[JoeDS]

Originally Posted by Beau388

Ford only supplies the A/C compressor. Everything else is purchased by Thor Motor Coach from an aftermarket A/C system vendor. It is usually up to the dealer to repair the system. To my knowledge Thor does not stock repair parts for chassis A/C. Since very few dealers have certified A/C techs, Thor Motor Coach will usually authorize you to take your coach to a certified truck air conditioner specialist for evaluation. If you save the parts that were replaced and return them to Thor, Thor will reimburse you in about a month. The reason it works that way is Thor returns the bad parts to the vendor for credit. Works that way for non-Thor dealers working on Thor coaches under warranty, also.

Thanks. That's what I needed to know. Lots of room for error in that type of install. Mine just wont cool well.

[JoeDS]

Originally Posted by Muggs

I had same issue with my 2016 Vegas. Getting fitting on is possible. Added R-134a untill sight glass cleared, is fine now. Go easy as it is very easy to ocercharge. Watch high side pressure during charging.

Yours has a sight glass! How lucky. A fool proof way to check charge. Have not seen one on mine. Was your low side fitting way back in the middle, behind the wiper motor and below the defrost duct?

[Muggs]

Sight glass on top of drier tank. High side is close to it. Low side is a pain but doable. I did loosen vent hose.

I also had trouble with flat piece that holds vent connections. It pulled the rubber expanding anchors twice. I tapped them 5/16" = 24 and now it will not flop around.

[JoeDS]

Originally Posted by Muggs

Sight glass on top of drier tank. High side is close to it. Low side is a pain but doable. I did loosen vent hose.

I also had trouble with flat piece that holds vent connections. It pulled the rubber expanding anchors twice. I tapped them 5/16" = 24 and now it will not flop around.

Double checked for sight glass. None on my 2017. The low side location is just plain stupid. They even ran the hot water heater hose over the hot of it just to make it harder.