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Old 07-23-2003, 02:45 PM   #1
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What fuse for the front jack

The fuse on the power jack melted and I can't figure out its power.
I used a piece of wire to enable me to raise the jack
Is it a common problem?

Hart
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Old 07-23-2003, 04:46 PM   #2
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When you say you used a piece of wire, I'm assuming you wired the jack directly to the battery?

I have poped the fuse a few times. The first being a short within the jack. The dealer replaced the jack. I have also found that you can bind the jack if the trailer moves a little after the jack is down. When you go to crank the jack up you find that the motor may labor. If you continue to crank with the jack laboring without stopping occasionally to let the wiring cool down you will pop the fuse.
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Old 07-23-2003, 05:58 PM   #3
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breaker

hart

install a circuit breaker of the same rating.

if you overload the jack it will reset itself.

no more messing around with fuses.

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Old 07-24-2003, 07:22 AM   #4
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Jack,
The piece of wire was inserted in the fuse holder to replace the fuse
The motor does indeed seem to labor more than it should, is there a quick fix?

John,
Good idea, but I still don't know the fuse rating.

Hart
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Old 07-24-2003, 12:54 PM   #5
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I've blown a few of these too!

Our jack takes a 30amp fuse. We started blowing them the second time out with the trailer. Took it over to the dealer who said it might just be ????? and gave us more 30 ampers to take with us to Disney.

We blew a bunch there and had to buy more. I have taken the jack apart to make sure wires are not touching each other and have not had the problem since then but neither have we had an opportunity to go very far out of the driveway!

As a precaution, I did buy a box of 25 more "little greenies" just in case the same problem arises on the next long weekend vacation.
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Old 07-24-2003, 02:26 PM   #6
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My fear is to get the jack stuck in the extended position, but for the moment I will also stock up on those green things.

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Old 07-24-2003, 04:41 PM   #7
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My SOB used to use the round glass fuses. I used to blow those occasionally. My dealer said I needed to use slo blow fuses rather than the glass ones. The slow blow were identified by a paper casing rather than a see through glass. Once I started using those, I never blew a fuse again.

Now my Safari uses the newer style plastic plug in fuses. I have only blown one time since the jack was replaced but that was the binding issue I talked about earlier. I know the sound of a normal up and down and when binding occurs.

Jack
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Old 07-24-2003, 11:20 PM   #8
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How to stop the binding before lifting the unit to hitch?

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Old 07-25-2003, 08:44 AM   #9
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Normally once I arrive at my site and have the trailer wheels blocked, I lower the jack to raise the trailer and the tow vehicle. This takes the pressure off the spring bars and makes for easy removal.

Once the bars are removed I lower the trailer down to get to the point where I can open the hitch coupler. Once open I begin to raise the trailer off the ball.

On occasion I sometimes notice that once the trailer comes off the ball that the angle of the jack that extends to the ground has sometimes changed slightly. That's my warning that I could get into a binding situation. When I see this occuring I lower the trailer back down on the ball and continue to raise the jack until it no longer touches the ground. At that point I will notice that the trailer may move just slightly as it settles against my wheel blocks. At that point I again lower the jack and raise the trailer off the ball of the tow vehicle. This virtually eliminates any binding and it ended the situation where the jack labored and sometimes blew a fuse.

Sounds a little complex but I think if the jack gets into a situation where its not only supporting verticle weight but it is being pushed slightly forward or rearward you have the motor working with two forces rather than one, which in essance heats the motor and eventually can blow the fuse.

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Old 07-25-2003, 08:47 AM   #10
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Fuses

My big fear has also been not being able to get the jack up again. Not to be confused with the greater fear of opening that box of fuses and only finding one remaining greenie!!!
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Old 07-25-2003, 08:50 AM   #11
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Ed I don't know the age of your trailer but bottom line you shouldn't be blowing fuses in the regularity that you speak of. Something isn't right here.

Jack
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Old 07-25-2003, 02:15 PM   #12
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I will always check the angle of the extension...Thanks

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