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Old 05-11-2009, 06:55 AM   #1
2 Rivet Member
1973 21' Globetrotter
Middletown , Rhode Island
Join Date: Nov 2006
Posts: 45
Original Power Tongue Jack Repairable or Replace?

The motor on my original power tongue jack is giving up. Can replacement motors still be found for these or is it recommended to replace the whole jack. Any recommendations on a replacement jack?

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Old 05-11-2009, 09:48 AM   #2
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1975 31' Sovereign
1973 27' Overlander
1977 23' Safari
Palmer Lake , Colorado
Join Date: Oct 2005
Posts: 3,881
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I've taken apart 4 of these original tongue jacks. The motors and phenolic gears all were in good shape, but the jack screw seems to be where all mine had problems. I haven't found any way to get into the tube to clean or lubricate the screw.

I've even had one that would raise the tongue just fine, including the weight of the tow vehicle, but wouldn't go down until I took the pressure off by using a small hydraulic jack! That seemed backward to me.

PM me back and I'll see if I have a good condition motor head that I can send you. I won't be home until 6 June, so remind me then.


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Old 05-11-2009, 10:39 AM   #3
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1976 25' Caravanner
Vintage Kin Owner
Campton , New Hampshire
Join Date: Feb 2006
Posts: 1,113
Just had a problem with mine that might help . The inner tube was falling down with no load , it would jack up fine. Jacked the front up with a floor jack high enough to let the tube come completely out. It just threads to the rod that runs inside the inner tube . In my case it came unthreaded I think from raising it too high and it was not threaded in tight enough. My solution was to place inner tube back in and while holding it up run the motor to raise the tube . This got the thread started . Then raise it all the way till the clutch slips . Then take the head off and use the hand crank to tighten the thread even further . So far so good .

In your case , to get the tube off , do the opposite. crank the jack to fully extended . Then with another jack bring the front of the trailer up a few more inches so the inner tube is not resting on anything . Use the hand crank and try to extend the tube further , hopefully it will unthread the inner tube and you can clean and lube . There is not much to lube there , the only real place is at the top , there is a bearing where the rod goes thru the outer tube . If you remove the motor it will give access to the top of that bearing. good luck
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