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Old 05-20-2015, 02:13 PM   #1
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Tongue Jack Failure

We just purchased a 2015 Jayflight 28 BHBE Elite. During my first set up the power tongue jack would only work when my truck was plugged into the trailer. My manual override worked fine. While using the manual override the electric kicked back in.

Anyone else having problems like this.
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Old 05-20-2015, 02:18 PM   #2
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First check would be the 30A in-line fuse right up front. Make sure your battery is connected properly.

It is strange that it began working again once you began manual operation. This would indicate to me that the motor could have been bound up somehow. I would have expected the fuse to pop in that situation.

Be careful not to run the jack to the end of its travel either direction, you could pop the fuse. Also be careful not to reverse direction until the motor has stopped completely. And go out and get yourself a handful of 30A fuses, you'll need them eventually.
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Old 05-20-2015, 02:30 PM   #3
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We blew out 30am fuse 3 times within the first couple times using it. I think we have it figured out now.
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Old 05-20-2015, 02:43 PM   #4
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30A ATC fuses.


Gotta add a bunch of them to the toolbox.
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Old 05-20-2015, 02:48 PM   #5
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Quote:
Originally Posted by DMack View Post
We just purchased a 2015 Jayflight 28 BHBE Elite. During my first set up the power tongue jack would only work when my truck was plugged into the trailer. My manual override worked fine. While using the manual override the electric kicked back in.

Anyone else having problems like this.
No, but I've blown a couple of fuses already. This site warned me about that so I had a package of spares ready.

If the jack only works when plugged into the truck, it probably means your TT battery is/was discharged.
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Old 05-20-2015, 03:13 PM   #6
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No, but I've blown a couple of fuses already. This site warned me about that so I had a package of spares ready.

If the jack only works when plugged into the truck, it probably means your TT battery is/was discharged.
This is also a symptom of a blown 30A fuse on the tongue. I know because I've blown mine before, and when I plug into the truck, I just keep on goin'! Of course, I keep an assortment of spare fuses for the TT AND the truck on hand in BOTH vehicles (yeah, sometimes I'm a belt & suspenders kind of guy!)

I've also forgotten my battery once or twice when leaving to go pick up the TT from storage (I keep it on a float charger in the garage at home). I remove the fuse (to keep it from popping if one of the battery leads touches the trailer frame), and I'm still able to operate the power tongue jack when I'm plugged into the truck.

Of course, that introduces the problem of towing without a battery, but luckily I'm only a couple miles from the house, so I usually chance it on those rare occasions I forget the battery (hasn't happened in a long time though).
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Old 05-20-2015, 03:18 PM   #7
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DMACK what is the make of the Tongue Jack?
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Old 05-20-2015, 03:58 PM   #8
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I replaced my electric tongue Jack last month. There isn't a clutch in these generic jacks jayco is using. If you retract it too far or overextend it, you will blow the 30 amp inline fuse immediately. I replaced mine with a Barker VIP 3500. The generic is for sale.
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Old 05-20-2015, 10:18 PM   #9
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We went through a handful of 30 amp fuses this past weekend, so much so that we had to find an auto parts store in a nearby town and buy some more. But after reading this thread, I now know it wasn't anything I was doing -- except extending the jack to its limit -- and nothing "wrong" with the jack beyond poor engineering, and what to watch out for. I think what I'll do is extend the jack to it's limit and sacrifice a fuse, and mark a line an inch or two on the shaft below that point. That way when I'll know when I see the mark to not go any further. There already is a mark near the foot of the jack, I just need one near the top.
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Old 05-21-2015, 08:20 AM   #10
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Quote:
Originally Posted by Camping Couple View Post
If you retract it too far or overextend it, you will blow the 30 amp inline fuse immediately.
This has actually never happened to me. I've retracted the jack until it stops several times without incident. Of course, the very moment it stops, I release the switch because I'm usually about to release anyway because I don't want to go until it stops. If I were to continue to hold the switch even a half second more, I'm sure the fuse would go, but it hasn't happened yet...
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