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Old 01-24-2018, 01:10 PM   #1
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2018 silverback 37mbh popping noise

In the bedroom we keep hearing a poping noise,it does it when the temperature cools down in the evening ,and keeps doing it into the night,at first i thought it was a 6point jack problem ,but trailer has no movement at all every few minutes there is a loud pop. Any ideas i checked every nut and bolt i could find ,btw it dont do it during the day at all
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Old 01-24-2018, 01:15 PM   #2
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First possibility is the slide toppers, if you have one.

Second, if not that, try adding a little Stiction Fluid to the hydraulic reservoir.
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Old 01-24-2018, 01:19 PM   #3
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Thanks we have no slide topper i never heard of of stiction fluid?
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Old 01-24-2018, 01:23 PM   #4
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Thanks again I'm going to try the fluid there is a article about the poping sound
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Old 01-24-2018, 01:23 PM   #5
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Quote:
Originally Posted by Billroetter View Post
Thanks we have no slide topper i never heard of of stiction fluid?
My bad, it's actually ANTI-stiction fluid.

Here's Lippert's .PDF on it.

https://www.lci1.com/assets/content/...ic_Systems.pdf
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Old 01-24-2018, 09:15 PM   #6
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If your sure the popping is from your jacks, can tell you we had same issue, Could not find the two fork fluids locally without ordering, we were in Orlando FL for the winter. The cat fluid was readily available at Cat dealers. It took 2 quarts to eliminate our pops completely. The first quart worked ok, but started having a few pops about two months later. Did the 2nd quart. that was 2 years ago, has not done it since.

This is very easy to do if you follow the Lippert pdf.
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Old 01-24-2018, 11:53 PM   #7
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Thank you all for info im ordering the fluid from amazon,campground said i could sent it to the office nice people thanks again ,safe travels
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Old 01-25-2018, 11:03 AM   #8
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Have the same popping noise, really anoying in the night. Catapillar have it for $30.90
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Old 01-25-2018, 05:28 PM   #9
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If your wondering how to suck fluid out of of the reservoir, I went to Walmart and got the little hand-pump they have for changing oil in a mower was able to get the tube in as ours is tight to the top of the compartment. Also used it to put the other cat fluid in.
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Old 01-25-2018, 05:56 PM   #10
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Good idea thanks
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Old 01-25-2018, 10:07 PM   #11
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Hydraulic fluid change

I changed my hydraulic fluid this past fall when I was winterizing. I found a very fast and easy way to empty the reservoir. I connected an air conditioner charge hose to the pump discharge. This is the charge hose that is used on the R12 systems on older cars.
Looking at the rear of the pump, two lines go up to the solenoids. On each of these lines is a small screw on cap. I took off the left cap and connected my A/C charge hose. I put the other end of the the hose into an empty 1 gallon jug. I started the hydraulic motor and pumped the whole reservoir into the empty jug in less than 30 seconds. Took the hose off, put the cap on and proceeded to fill the reservoir with Amsoil synthetic ATF and a quart of the Cat anti-stiction fluid. I ran the slides in and out 3 times and did the same with the levelers to get the anti-stiction fluid mixed in. Reservoir took 6 quarts of ATF and 1 quart of the Cat fluid.
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Old 01-26-2018, 04:02 PM   #12
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We have had popping noises in our 2017.5 CC34RL2 for the 10 months since we took delivery. A bit annoying but we have somewhat become accustomed to the noise. I thought (think?) it is coming from the roof and assumed it to be differential heating/cooling within the structure but don't know that for sure.

Please post on whatever you do if you eliminate the noise.

Thanx.
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Old 01-26-2018, 05:20 PM   #13
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We had the reservoir and pump replaced at the FROG Rally due to a leak. Without asking, LCI added anti-stiction fluid and now the popping is about 95% gone.
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Old 01-26-2018, 05:34 PM   #14
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TandSH, Gosh here I go again. If you look up thru you AC vents and can see blue styrofoam insulation that is shaped to make your duct work, you probably are hearing noises from the ceiling area. This was a discussion not only on this forum but on other RV forums as well. Ours only does it when using the AC when it is extremely hot and the sun is shining straight on to our roof. We have a heat pump on our primary AC if we use this on those tepid days all bets are off, it is especially annoying at night.

It is funny you mention this noise, by far this is one of the things I think is the most poorly designed part of our unit.
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Old 01-26-2018, 09:34 PM   #15
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Try this YouTube link for a friends video (John Hebard -Hebard’s Travels)who had the same problem and how he added the hydrology additive that Lippert recommended:
https://youtu.be/DEC3R_GB1QY
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