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Old 12-08-2019, 04:23 PM   #1
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2016 23' International
Mancos , Colorado
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Tongue jack shorted out

While traveling on our way to Banff Canada we encounter a lot of rain. On that evening stop the tongue power jack didn’t operate and when I removed the plastic cover to access the hand crank I found the plastic enclosure full of water. I had to replace the inline fuse several times before it started working but now it won’t work even though the fuse is good. I am not much of an electrician so I wonder where to look for repairing this problem. PS the battery operated drill works the jack just fine but it is one more thing to mess with

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Old 12-14-2019, 12:12 PM   #2
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In the good old days you could take your automobile's starter or generator to a specialized repair shop and they could do a repair. I would try and find such a shop and take the motor there for them to test.

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Old 12-14-2019, 01:25 PM   #3
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Might be best to consider replacing a jack that didn't survive a good soaking.

Suggest looking at the Husky brand jack.
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Old 12-15-2019, 06:46 AM   #4
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Then consider a tight fitting jack cover. (Canvass or??)

Not only would it offer added protection from water in the various forms, it would offer UV protection as well. The plastic cover will degrade over time with enough sun exposure. Usually that damage will occur on the top of the cover leaving the good sealing bottom of the cover to hold in the moisture.

A lot less money replacing a canvass cover than replacing a jack.

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Old 12-15-2019, 07:56 AM   #5
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Carlisle , Pennsylvania
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The jack should not fill up with water. Best guess is that there are some drain holes lower in the body that have plugged up. They need to be fond and cleared.

Rain water by it's self is pretty non-conductive (at least as far as blowing a 12V fuse). Best guess is that the problems are at least in part from corrosion. The water problem likely has been there for a while and things have been rotting away for weeks / months.


Grab an air hose and blow everything out. Tear it down as far as you can to get at as much of it as possible. If it's packed with dirt / corrosion, scrub that off. Let any water dry off, either sitting in the sun or indoors. Spray it down with a lot of WD-40 and let that run off for a bit. Repeat the WD-40 process a couple of times.

While you have it torn apart, look for things like wires that are broken or insulation that has rubbed off of wires ....

Lots of fun.

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