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Old 01-07-2015, 06:44 AM   #1
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Rear AC loud

The rear AC unit on our Baystar is louder than the front unit from inside the coach. I called Newmar, and they said both units should have the same interior sound. They also said there is a "kit" to reduce noise from the unit transferring into the coach if needed, but this "fix" is only available if a dealer deems it necessary. They also said that the unit may have been tightened too much in mounting, taking away the isolation mount flexibility. My problem is the local dealer is "too busy" with their own customers (I didn't buy there because of their unwillingness to deal) and won't even give an appointment to anyone who didn't purchase there. I can understand their position as they are in the midst of moving into a larger facility, and now have the tourist influx to try to deal with. Has anyone here had the noise issue and found a solution to it, or should I wait till the dust settles here and the snowbirds go back home and try to approach the dealer again?
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Old 01-07-2015, 08:44 AM   #2
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Hi lostinfla,
Looks like you have several choices. My comments assume you have mobility capability and are comfortable on the roof of the coach. Consider:
1. Remove the shroud from the rear unit. The fan motor may be causing some of the noise. With the unit running, move the fan motor (gloves are needed the motor may be hot) a bit to see if vibrations/noise lessens. If true. purchase some foam rubber packing material (also insulation). Fill the space under and to the side of the motor so the insulation is supporting and holding the motor just a bit. This will take some trial and error. The goal is to have the foam rubber absorb the fan motor vibrations.

2. Loosen the unit hold down bolts about 1/2 turn. The hold down bolts should be snug but not tight.

3. Purchase the kit, from Newmar, and install it yourself.
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Old 01-07-2015, 10:30 AM   #3
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Thanks Gary. I'm thinking it's the bolts being too tight because of the compressor sound. I'll check it out soon. I was just afraid to loosen the bolts for fear of leaks. As far as the "kit", I was led to believe the dealer had to request it and they wouldn't just sell it to a customer. There are ways around that though...
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Old 01-07-2015, 02:47 PM   #4
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This information is found in QT's 1 & 2 for your AC's plus more.
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Old 01-12-2015, 08:08 PM   #5
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Got up on the roof and loosened the lag bolts a little, and the noise is much less pronounced. Thanks all!!
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Old 01-13-2015, 04:30 AM   #6
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Rear ac

Keep your eye on it and keep using it. Ours rear unit has been replaced twice. Hopefully, this third unit will continue to work. We are in Florida for a month and it seems to be working ok with the heat pump.
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Old 01-13-2015, 05:56 AM   #7
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Originally Posted by lostinfla View Post
Got up on the roof and loosened the lag bolts a little, and the noise is much less pronounced. Thanks all!!
lostinfla - I'd put a little silicone around the lags, keep'em watertight and act as a thread-locker.
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Old 01-13-2015, 06:43 PM   #8
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Thanks Charlie. I am going to pull them one at a time and reseal with silicone in the hole. Just wanted to make sure it would make a difference first. Kind of ran out of time that day as I was also installing a King Jack digital antenna to replace the crank up unit. Also running into dexterity problems About 4 weeks ago I got my left pinky between a trailer hitch and the house severing the finger at the hand. Got it reattached (trip to the ER), and bones reconstructed through surgery (today actually), so I may have to wait a week or so before I feel comfy enough to get back on the roof...

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Old 01-14-2015, 02:46 AM   #9
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Holy S*&T!!! This is not supposed to be a full contact sport, I hope you're OK. There is nothing up there that can't wait a few weeks. Take care
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Old 01-14-2015, 05:20 PM   #10
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Ouch!! That looks and sounded painful. To hear what happened made me cringe. Sorry it happened and hope your feeling better soon.

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Old 01-14-2015, 05:56 PM   #11
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Hi lostinfla,
Very sorry to see you are hurt. Speedy recovery is wished upon you. It may be hard to do, but do what the doctor tells you to do.
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Old 01-14-2015, 07:31 PM   #12
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Thanks all! I'm praying for a full recovery so I can get back to playing guitar and riding my MC. I am keeping a positive attitude. I know that's half the battle. Besides, we have a trip planned this summer, so I'll have to be at least 80% by then.
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Old 01-14-2015, 07:42 PM   #13
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Quote:
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Thanks all! I'm praying for a full recovery so I can get back to playing guitar and riding my MC. I am keeping a positive attitude. I know that's half the battle. Besides, we have a trip planned this summer, so I'll have to be at least 80% by then.
OUCH!!!! reminds me of when I heard my wife's upper arm break, trip to Ohio its the first time I ever heard a bone snap, never will forget it.
Hope its a fast heal for you, looks like a full plate ahead for you this summer.
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Old 01-15-2015, 05:26 AM   #14
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We've never taken a camping trip longer than a week, so this should be good. Just got a base plate for the Jeep, tow bar, braking system and lighting system, and can't install them yet. Soon though!
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