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Old 06-25-2018, 10:22 AM   #1
Wflamm@gmail.com
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Noise from below

We have a 2017 3720RL. At night after getting in bed, we’ll hear a fairly loud bang or pop sound coming from under the bedroom area. Can’t figure out what it is. It’ll happen on and off - let’s say 5-10 times over 1/2 hour- until we finally fall asleep. Any ideas what’s causing it?
 
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Old 06-25-2018, 10:55 AM   #2
Kyle and Lisa
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More than likely it is your level up system settling. Check for hydraulic leaks first. Lippert suggest an anti-stiction fluid additive, there are 3 they recommend. 1. Torco RFF Grade 15, 2. Maxima Fork Oil Grade 15, 3. Caterpillar Hydraulic Oil Additive 1U-9891. I used the Cat oil just yesterday. They are all about the same price $25-30 a quart which is all Lippert suggest you add to your hydraulic tank.
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Old 06-25-2018, 10:59 AM   #3
richfaa
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Like Kyle and Lisa said.
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Old 06-25-2018, 01:42 PM   #4
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I use the cat oil also. I used 1 quart but some folks have used 2 quarts. 1 quart works for me. You just use a bulb to remove an quart out of tank and replace with additive.
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Old 06-25-2018, 02:43 PM   #5
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Where do you get these oil's at? I haven't had this problem but like to know were to get them if needed.
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Old 06-25-2018, 02:55 PM   #6
1retired06
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Your lippert manual provides detailed instructions on the use of anti-stiction additives. Bought mine on Amazon.
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Old 06-25-2018, 04:07 PM   #7
Carl n Susan
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Attached is the Lippert Stiction announcement.
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Old 06-26-2018, 09:34 AM   #8
Kyle and Lisa
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Quote:
Originally Posted by Md.FireFighter 3791RD View Post
Where do you get these oil's at? I haven't had this problem but like to know were to get them if needed.
I picked ours up from a Caterpillar equipment dealer.
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Old 06-26-2018, 09:59 AM   #9
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Have to see were the nearest dealer is for me or Amazon
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