Hydraulic lift system Hydraulic, mechanical and electrical components of the lift system
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Old 08-19-2018, 02:41 AM   #1
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Default Battery won't lift 2001

I recently purchased a 2001 1901TL Hilo Towlite. With 110V AC plugged in, it raises and lowers. If I try to do so from the 12V battery, it won't. It's a new battery, fully charged. If I attach a jumper cable from the positive battery terminal to the selenoid when the top is down, it will raise it. Anyone else ever have this problem? Any suggestions? Obviously the switch, selenoid, motor, hydraulic pump and battery are ok. But not when I want to raise or lower via the 12V battery the normal way. Thanks. ---Crispian
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Old 08-19-2018, 06:40 AM   #2
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I would start by checking and cleaning all the battery connections and the wires to the lift motor, as well as the ground connections. It requires a good bit of amperage and clean connections help.
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Old 08-19-2018, 03:36 PM   #3
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Great. Thanks. Will do. I'll let you know how it goes.
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Old 08-22-2018, 06:14 AM   #4
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If you have a manual, go over the wiring that connects to the battery. If it's anything like mine, you might just have a wire missing on the connections or something.
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Old 08-23-2018, 06:58 PM   #5
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I do have a manual on CD. If cleaning the connections doesn't fix it, I'll check the manual for any missing wiring. Thanks.
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Old 08-23-2018, 09:52 PM   #6
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Check the 12v breakers near the battery.

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Old 08-24-2018, 07:37 AM   #7
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Better yet, replace them.
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Old 08-24-2018, 01:56 PM   #8
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I will have to check my manual. I don't recall seeing any breakers near the 12V battery. I have fuses inside the trailer as well as breakers for the 110V system. That was the first thing I checked. They are ok. No problem with either. Thanks.
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Old 08-25-2018, 12:36 AM   #9
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Crispian, This is what a 12v breaker looks like. The little black button is what resets it if it is "blown". There will be 12v wires attached to it. These are located outside your trailer, not inside with the power panel.

Bob

12v breaker.jpg
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Old 08-25-2018, 12:52 AM   #10
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Thanks Bob. Got it. The photo helps a lot. I will try resetting that breaker before doing anything else. My HiLo is parked on my friend's property and I will drive there tomorrow.
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