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Old 07-15-2013, 10:53 AM   #1
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Jack motor

The tongue motor stopped working, tore it down all other parts are fine, should I just have the motor rebuilt by local shop.....or buy one.

It's the original '77, no brand or make anywhere on it.
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Old 07-15-2013, 11:00 AM   #2
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Get local rewire!
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Old 07-15-2013, 11:08 AM   #3
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Are you sure the problem isn't just a bad ground or connection somewhere? I had that happen on two trailers!

In both cases my problem turned out to be corroded wires under wire nuts. When I checked with a multimeter at the motor, it seemed to be getting 12v, but the connection was so bad that it could not draw sufficient current to operate. When I connected the motor directly to a 12v battery it ran fine, so that go me looking into the feed wiring and that was how I discovered the problem.

I cleaned the wires up and soldered them rather than just relying on wire nuts. been ok ever since.

Just a thought - probably you have already checked this!


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Old 07-15-2013, 11:16 AM   #4
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yep tried it
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Old 07-15-2013, 11:17 AM   #5
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I'm not sure if this will help in your case, but the jack on our Avion stopped working several years ago. I took it apart and found that the motor armature would not spin because moisture (condensation) had built up in the lower part of the motor. This caused the armature to seize in the bearing sleeve. Some WD40 and a fine steel wool massage of the armature did the trick and the unit is still in service today.
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Old 07-15-2013, 11:19 AM   #6
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the armature turns
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Old 07-15-2013, 11:57 AM   #7
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Since you are into the motor did you try applying power directly to the motor? Get the end switches out of the circuit. If the motor work under this condition one of the end switches may have overrun and be open.
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Old 07-15-2013, 12:15 PM   #8
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Jacks are cheap on ebay.
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Old 07-15-2013, 12:28 PM   #9
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Just my opinion, but I would not attempt to repair a 36 year old electric tongue jack. I would replace it in a heartbeat.
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Old 07-15-2013, 02:00 PM   #10
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Perhaps that's because you're not into vintage aka the VAC, we try and fix things rather than just replace.

Airstreams are not planned obsolescence.
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Old 07-15-2013, 02:11 PM   #11
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Quote:
Originally Posted by LI Pets View Post
Perhaps that's because you're not into vintage aka the VAC, we try and fix things rather than just replace.

Airstreams are not planned obsolescence.
I understand that, and your point. But, if you get the motor repaired, what's the next thing that's going to break in that 36 year old jack, and will you be able to buy that part?

You could buy a new one, and paint it the same color as the old one.
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Old 07-15-2013, 02:14 PM   #12
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Quote:
Originally Posted by LI Pets View Post
Perhaps that's because you're not into vintage aka the VAC, we try and fix things rather than just replace.

Airstreams are not planned obsolescence.
If fixable, do it. Also, this is a great time to verify the jacking parts are safe. A great deal of wear happens in the screw, too. If still good, rewire motor.

There are folks who can help. If you can't find, PM me and I will point you toward someone who rebuilds several thousand HP to specialty motors.
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Old 07-15-2013, 02:54 PM   #13
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Thumbs up

Quote:
Originally Posted by HowieE View Post
Since you are into the motor did you try applying power directly to the motor? Get the end switches out of the circuit. If the motor work under this condition one of the end switches may have overrun and be open.
Bingo, that was it.

Now how to find that or substitute switch.

It says 10A 250 vac
1/4 hp 125-250 vac

I think temporally I just run two wires out to 12v and jump up or down.

tks Howie
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Old 07-15-2013, 03:04 PM   #14
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If fixable, do it. Also, this is a great time to verify the jacking parts are safe. A great deal of wear happens in the screw, too. If still good, rewire motor.

.
I always get into more ancillary things when I take stuff apart, you're correct.
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