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Old 06-22-2011, 10:07 AM   #15
3 Rivet Member
1988 25' Excella
Trumbull , Connecticut
Join Date: Oct 2010
Posts: 192
Electric Jacks

Originally Posted by idmtman View Post
My jack works fine until I extend it completely and then the 30A fuse blows. Unfortunately, I cannot quite yet tell when I am about to extend it to it's maximum length so I have blown a couple of fuses. Other than carrying a supply of 30A fuses, any ideas what might be causing this short?
Hello. To make sure I don't extend the jack to it's max I painted a red line on the jack shaft so that when I start to see the red line I stop.
When the jack reaches max either up or down and the limit switches are not set properly the motor is in a lock rotor state and draws a lot of current which blows the fuse.
Good luck nm1oqrz

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Old 10-12-2012, 10:08 PM   #16
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1978 28' Ambassador
Etobicoke , Ontario
Join Date: Sep 2011
Posts: 1
Smile Excellent information - thank you

I read your article about your electric jack problems. Thank you. I am going to try this diagnosis as it sounds just like my problem. I have been beating myself up that I did not use the jack properly but have recently discovered it just doesn't have the power to push up the tongue to release the vehicle.
I have a 28 foot, 78 International, rear bath, twin beds which I love.
Unusual, no. But I am a single woman and buddy with my son and his family and friends. It is perfect as I can retire to my bed when I wish and the family can have their privacy.
I live in Etobicoke.
Thanks again for posting your solution

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