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Old 09-20-2012, 06:42 PM   #1
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Thunk

I have a Ford 250 Super Duty with a Reese 16k 5th Wheel hitch towing a Cardinal 30 LE RK. Sometimes there is a thunk when I take off or stop. Sometimes there is no noise at all. I always hook up the same way. So I am not sure what would cause the noise. Is there a little room for play with the kingpin and is that causing the thunk? Just want to make sure all is okay!

Thanks y'all

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Old 09-20-2012, 07:57 PM   #2
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I have a Ford 250 Super Duty with a Reese 16k 5th Wheel hitch towing a Cardinal 30 LE RK. Sometimes there is a thunk when I take off or stop. Sometimes there is no noise at all. I always hook up the same way. So I am not sure what would cause the noise. Is there a little room for play with the kingpin and is that causing the thunk? Just want to make sure all is okay!

Thanks y'all

Skip
I have the same hitch and had the same problem. I ended up making some 0.075" thick steel shims and fit under the 4 legs of the hitch. It now requires driving the pins in with a dead blow hammer, but no more thunk.

The shims are long enough and wide enough that the entire leg sits on the shim and have rectangular slots for the pin brackets.
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Old 09-20-2012, 08:02 PM   #3
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I have the same hitch and had the same problem. I ended up making some 0.075" thick steel shims and fit under the 4 legs of the hitch. It now requires driving the pins in with a dead blow hammer, but no more thunk.

The shims are long enough and wide enough that the entire leg sits on the shim and have rectangular slots for the pin brackets.
can you post a pic of your mounting rails ?

mine has adjustable pin slots to tighten .

I wonder if your guys does to ?
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Old 09-20-2012, 08:08 PM   #4
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Okay, so you think the play is under the legs and not on the kingpin?? Never would have thought of that. Where did you get the shims? Thanks for your help
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Old 09-20-2012, 08:12 PM   #5
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I have a Curt 16k and it does the same thing. It's not the hitch that I wanted, but I needed one in a hurry when I bought my rig. I get some clunking in the head pivot, king pin, and from the rails. Going to get a new hitch this winter before our FL trip in March. Still not sure on which one just yet.
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Old 09-20-2012, 08:17 PM   #6
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I will take a photo in the am,, kinda dark here in FL,,, minus the lightning!!!
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Old 09-20-2012, 08:18 PM   #7
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sounds good .
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Old 09-20-2012, 08:36 PM   #8
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can you post a pic of your mounting rails ?

mine has adjustable pin slots to tighten .

I wonder if your guys does to ?
GIVE ME A BREAK Ron, do you think I would have taken the time to make shims if they were adjustable??? The pin brackets are welded solid to the legs and they have 19/32"dia holes for 9/16' dia pins.
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Old 09-20-2012, 08:39 PM   #9
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Yeah got a Husky 16k and it thunks or whatever! Just reminds me its still back there!!
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Old 09-20-2012, 08:55 PM   #10
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Yeah got a Husky 16k and it thunks or whatever! Just reminds me its still back there!!
Just keep in mind, when it thunks or whatever, it is wearing something out and putting a shock load into whatever is thunking. Thunk about it!
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