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Old 04-20-2020, 12:34 PM   #1
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Question Chassis trailer hitch mount is loose

I tow a Mini Cooper with my 2004 Dolphin 1642. The Mini is very small and low and requires a 12" drop to position the hitch receiver properly for toad towbars. Here is the problem. Steel frame of frame mounted hitch receiver has become loose and moves up and down. The frame is mounted directly to the chassis (Workhorse W22) with 4 bolts. The plan was to replace the bolts and nuts with new bolts. The nuts on the bolts are not standard and we cant figure out how to remove them. Anyone had any experience with these fasteners.
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Old 04-20-2020, 12:41 PM   #2
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The best...and of course most expensive way...is to take it to a welder. Have him grind the bolts off then weld & fasten with new bolts. Or you can just use a grinder to remove them.
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Old 04-20-2020, 12:46 PM   #3
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Quote:
Originally Posted by Hatchee View Post
The best...and of course most expensive way...is to take it to a welder. Have him grind the bolts off then weld & fasten with new bolts. Or you can just use a grinder to remove them.
What Hatchee said ^^^^
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Old 04-20-2020, 12:57 PM   #4
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Welcome to iRV2.

Sorry your first post is about problems .

BY " not standard " do you mean the bolts are metric size and you don't have wrenches to fit .
B-in-L's 05 ; W-22 was metric bolts throughout , including 33mm socket required for the lug nuts.
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Old 04-20-2020, 03:18 PM   #5
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National RV installed the hitches with HUCK brand LOCK BOLTS, the are swaged on
not threaded on. Installation link below.
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Old 04-20-2020, 03:24 PM   #6
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Originally Posted by Richard S. View Post
National RV installed the hitches with HUCK brand LOCK BOLTS, the are swaged on
not threaded on. Installation link below.
Well , I've learned something today Time for my pre HH nap.
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Old 04-20-2020, 03:56 PM   #7
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Time to grind the heads off.
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Old 04-20-2020, 06:15 PM   #8
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Just cut the collar off, the bolt will punch out
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Old 04-21-2020, 10:02 AM   #9
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Thanks to all for help with my question. I'd never even heard of or seen a lock bolt. Thanks again.
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