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 > Electric jack for 5 wheel goes up and not down

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snowpeke

Nevada City California

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Posted: 05/29/20 04:42pm Link  |  Quote  |  Print  |  Notify Moderator

The jack stands that raises the front of the trailer up and down just goes up and not down. Worked fine in the morning next camp site won't go down. Checked the switch and it seems ok. Only 2 wires going to the motor. I tried jumping power to each one. One makes it going up the other it goes up very slow. Any ideas?


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BFL13

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Posted: 05/29/20 06:36pm Link  |  Quote  |  Print  |  Notify Moderator

I think up/down is like in/out with the slide. The motor two wires change pos and neg to turn the other way as set by the switch contacts.

I had that with the slide switch. New switch fixed that.


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eHoefler

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Posted: 05/30/20 05:00am Link  |  Quote  |  Print  |  Notify Moderator

One of the relays is bad


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fj12ryder

Platte City, MO

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Posted: 05/30/20 06:32am Link  |  Quote  |  Print  |  Notify Moderator

You have one switch but two motors? One for each leg? When you say the one doesn't go up, do you mean it won't retract, or it won't raise the trailer? Check to see if you have full voltage to the switch, and from the switch to each motor. Do the battery/ies have a good charge?


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Bobbo

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Posted: 05/30/20 06:48am Link  |  Quote  |  Print  |  Notify Moderator

fj12ryder wrote:

You have one switch but two motors? One for each leg? When you say the one doesn't go up, do you mean it won't retract, or it won't raise the trailer? Check to see if you have full voltage to the switch, and from the switch to each motor. Do the battery/ies have a good charge?

Only one motor because only one leg. This is a TT, not a 5er. He is talking about the tongue jack.


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BFL13

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Posted: 05/30/20 07:27am Link  |  Quote  |  Print  |  Notify Moderator

Bobbo wrote:

fj12ryder wrote:

You have one switch but two motors? One for each leg? When you say the one doesn't go up, do you mean it won't retract, or it won't raise the trailer? Check to see if you have full voltage to the switch, and from the switch to each motor. Do the battery/ies have a good charge?

Only one motor because only one leg. This is a TT, not a 5er. He is talking about the tongue jack.


Subject says 5er. Same switch anyway, 5er or tongue. Motor rotates the other way around when you switch pos to neg. Switch contacts do the reversing.

Trailer goes up when leg goes down. Switch says "extend" and "retract"

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EDIT--I think the OP did not reverse them when he jumpered them however he did that.

fj12ryder

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Posted: 05/30/20 07:32am Link  |  Quote  |  Print  |  Notify Moderator

Okay, the wording confused me a bit since it sounded like one switch but two motors, "One makes it going up the other it goes up very slow. Any ideas?".

With one motor, it could be the gearbox, the screws could be dry and dragging, or the bevel gear at the top of the leg is dry and dragging. If the trailer is going up really slowly, it could easily be the battery. Which is what I would check first.

snowpeke

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Posted: 05/30/20 08:49am Link  |  Quote  |  Print  |  Notify Moderator

This is for a 5 wheel! There is only one motor that lifts both legs. If there is a relay I don't know where it could be.

BFL13

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Posted: 05/30/20 09:14am Link  |  Quote  |  Print  |  Notify Moderator

https://www.google.ca/search?q=trailer+j........iPpuPb79vpAhVP7J4KHaf2BDgQ9QEwBHoECAUQHQ

fj12ryder

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Posted: 05/30/20 09:29am Link  |  Quote  |  Print  |  Notify Moderator

snowpeke wrote:

This is for a 5 wheel! There is only one motor that lifts both legs. If there is a relay I don't know where it could be.
What's the voltage like at the battery? And is it slow to raise the trailer, or to raise the leg?

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