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Old 07-16-2015, 09:27 PM   #1
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07 wildcat

How much movement is acceptable in the king pin?my frame moves about 1/2-1" if I hold the brakes and hit the throttle


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Old 07-16-2015, 10:23 PM   #2
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Forest River Forums > Fifth Wheels | Travel Trailers | Ultra Lites > General Travel Trailer & Fifth Wheel Discussion > Wildcat Reinforced King pin box

Got to Wildcat forum and you will find a few hits about this.
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Old 07-17-2015, 01:24 AM   #3
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Quote:
Originally Posted by a_iexterior View Post
How much movement is acceptable in the king pin?my frame moves about 1/2-1" if I hold the brakes and hit the throttle


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Do a search. You'll find other posts with pictures and remedies. These frames crack at the main crossmembers where the pin box side plates are welded. Lippert (the frame manufacturer) will do nothing to help you based on the year it is to old for them to warranty it.
You need to pull down the fascia and fully inspect the frame.
Here's what mine looked like in Jan. 2014. Sheered cross member and multiple stress cracks. They used material too thin.
You can see how much movement I had in the other pics.
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Old 07-17-2015, 07:14 AM   #4
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I pulled everything down there is no cracks or breaks as of now it's just flexing


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Old 07-17-2015, 12:14 PM   #5
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While it's apart I'd recommend having a fabricator weld in supports. I ended up boxing in the area with 2x6x.25" tubing. I have no flex now. Like you I noticed the movement but let let it go and I ended up with the failure. I also added an air ride pinbox.
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