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Old 04-04-2016, 10:06 PM   #1
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Happijac bed is making a pippin sound on descent.

Hi everyone. Out happijac beds have been working perfectly for the past month. On our trip this weekend, the bunks started making a loud popping sound while going down. Going up, they do not make a sound. Other than the sound, the beds are mechanically working fine. The sound seems to be right on at every three seconds, which leads me to believe it is coming from something rotating and striking something at three second intervals coming down, not going up.

I'm going home tonight to try to isolate where the sound may be coming from.

Does anyone have any ideas?

Thanks in advance...
Joe
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Old 04-04-2016, 11:09 PM   #2
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Hi Joe
I had the same issue, it is the drive sprocket it has two sprockets on it and the teeth may be worn



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Old 04-04-2016, 11:17 PM   #3
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Quote:
Originally Posted by Andybowen View Post
Hi Joe
I had the same issue, it is the drive sprocket it has two sprockets on it and the teeth may be worn



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Where are those sprockets located? Hard to believe they are worn seeing the unit has only been used twice. Did you repair this yourself and how difficult was the job? Parts?

Thanks in advance!
Joe
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Old 04-04-2016, 11:29 PM   #4
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I got the parts from the factory they sent them to me I live in BC Canada
The twin sprocket is on the drive side opposite side of the motor, one feeds the single sprocket on the non drive side it could be worn, mine was making the same noise as yours. If you want I can contact you with more info I have a 2013 380amp


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Old 04-05-2016, 12:37 AM   #5
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Hi Joe
If you go to happijac.com you can download the manual it will show the parts. I redone mine in about 1 Hr
Hope it helps


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Old 04-05-2016, 12:41 AM   #6
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I'll call you tomorrow Joe



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Old 04-05-2016, 02:06 PM   #7
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I had a similar problem. It started out as a noise, then progressed to allowing one end of the bed to drop a notch as it was raised or lowered. The setscrew on the end of the connecting shaft that joins both lift mechanisms together had loosened, and the shaft had backed out of the drive allowing one end to slip when the bed was raised/lowered. I disconnected the shaft, adjusted the bed to level with the motor and reattached the shaft (using some loctite on the setscrew.)
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