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Old 06-09-2016, 01:18 PM   #1
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1972 27' Overlander
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A/C Unit

Need a new rooftop A/C for a 1972 27' International Land Yacht. Can anyone give recommendation?
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Old 06-09-2016, 01:20 PM   #2
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1991 34' Excella
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Dometic Penguin II 15000 btu.
very low profile, white or black shroud.

Looks perfect on any Airstream
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Old 06-09-2016, 02:20 PM   #3
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Dometic Penguin II 15000 btu.
very low profile, white or black shroud.

Looks perfect on any Airstream
Yeah looks perfect, reliable but noisy inside. A higher profile unit will be quieter.
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Old 06-10-2016, 11:05 AM   #4
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1978 25' Tradewind
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Recommendation: Fix the existing Armstrong unit instead.
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Old 06-29-2016, 09:06 AM   #5
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1975 31' Romany
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Who can fix them? My compressor bearing is going out and when it heats up the ac shuts down and will restart after it cools down
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Old 06-29-2016, 11:09 AM   #6
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Who can fix them? My compressor bearing is going out and when it heats up the ac shuts down and will restart after it cools down
Are you sure it isn't the condensor fan motor?
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Old 06-29-2016, 12:26 PM   #7
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Who can fix them? My compressor bearing is going out and when it heats up the ac shuts down and will restart after it cools down
As Overlander63 noted correctly, it's more likely to be the fan motor. The compressor bearings are sealed in an oily bath, and it's very unlikely that they would overheat, and even less likely that you would be able to detect it if they did.

The answer to "Who can fix them?" is "you." It's pretty likely that multiple {like 20+) drops of oil in each bearing port will do what you want.

The hard part willl be getting on the roof; there's a zillion threads on how to do that safely, so read up.

Remove the shroud by removing the four rusty screws on top and lifting straight up. You'll see the fan motor, and above each end where the spinning shaft comes out, you'll see a little plug thingy - like 1/16" diameter - that can be removed with a pair of pliers. Fill the resulting holes with just regular old shop oil, like 3in1 or 30 wt motor oil. Put the plugs back in, put the shroud back on, climb down safely, and pat yourself on the back.

In the unlikely event that that doesn't work, you'll have to replace the fan motor. But I'm betting the oil works.

Here's a generic picture of a fan motor showing the oil ports with the plugs removed:

http://www.hearth.com/talk/data/atta...327187c8b0.jpg
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Old 06-29-2016, 04:25 PM   #8
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Oops! Correction! You'll have to remove a couple sheet metal panels to get to the fan motor. They'll be fastened with either Phillips head sheet metal screws or hex head sheet metal screws. It's just like taking apart a ball point pen, just a few feet in the air.
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Old 06-30-2016, 10:44 AM   #9
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thanks for the info, I will try oiling it to see if that solves the problem
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