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Old 07-20-2018, 04:45 PM   #1
Oldharley
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Some kind of fuse block?

I assume this is some sort of fuse. It has battery Input on the right side lugs and then goes to the hydraulic levelers from the left side. I was lowering the jacks and they stopped about 3seconds into lowering. I metered the left side and had nothing. The right side had 13.3 v.
I plugged the unit into shore power and then was able to lower the jacks. I'm guessing this part to be bad but what should i replace it with. Wasn't sure what amp fuse block to replace it with. I have some 150 amp units we use on lift gates that have lugs and a resetable breaker.

I hope my picture loads as this is my first post.
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Old 07-20-2018, 05:38 PM   #2
Montana Man
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Swap it with an 80 amp fuse of like design. Keystone used a cheaper version of fuse than what the manufacturer recommends. The on and off hydraulics will no longer occur.
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Old 07-20-2018, 06:31 PM   #3
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This is a common problem. Like ^^^ said swap it out for an eighty amp fuse, problem solved.
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Old 07-20-2018, 06:53 PM   #4
Oldharley
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Awesome fuse is ordered.
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Old 07-20-2018, 07:26 PM   #5
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When that breaker comes out, take it apart an look at how cheap it is made. It's no wonder they fail. The units with the hydraulic slides and jacks have been measured by several drawing up to 76A when cold and the fluid is thicker. That 50A just won't cut it. These guys are correct, the 80A is the way to go and is actually recommended by Lippert as the solution to the failing breakers.
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Old 07-20-2018, 07:31 PM   #6
BB_TX
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Actually it is an auto reset circuit breaker. Something like the link below. Many have replaced that standard 50 amp breaker with an 80 amp breaker. Maybe someone will post the specific model number.

auto reset circuit breaker
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Old 07-20-2018, 07:37 PM   #7
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Here is a link to an 80A that is often used.
https://www.amazon.com/Bussmann-CB18...sman+cb181f-80
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Old 07-20-2018, 07:41 PM   #8
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This is what the new one looks like..Pictured is a 150A, but they look identical. This one in an auto resetting.
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Old 07-20-2018, 11:35 PM   #9
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Mine is the Bussman cb185-80amp fuse and works great. They are 31.95 on Amazon.
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