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Old 06-25-2019, 01:19 AM   #1
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Broken part dragging on the road

Driving through Montana this week we began hearing a grinding noise when going over bumps. It quickly progressed to a constant grinding. Pulled over and found this heavy gauge 6 foot piece of steel dragging on the road. It appears to be a heat shield that was spot welded about every 10 inches to the right side of the frame (2015 F 53, 18,000 GVWR). About half of the welds were broken allowing one end (fortunately the back end!) to drag. I was able to crawl under and break the remaining welds and so remove the entire piece. I think it will be OK without it. It might be a Ford part as it is powder coated the same as the frame. Has anyone else heard of this part falling off or of being of any particular use in the first place?Click image for larger version

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Old 06-25-2019, 01:25 AM   #2
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Probably to shield the floor of the unit from getting to hot---and maybe starting a fire, or melting something in the coach.
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Old 06-25-2019, 02:19 AM   #3
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Originally Posted by Pete'sMH View Post
Driving through Montana this week we began hearing a grinding noise when going over bumps. It quickly progressed to a constant grinding. Pulled over and found this heavy gauge 6 foot piece of steel dragging on the road. It appears to be a heat shield that was spot welded about every 10 inches to the right side of the frame (2015 F 53, 18,000 GVWR). About half of the welds were broken allowing one end (fortunately the back end!) to drag. I was able to crawl under and break the remaining welds and so remove the entire piece. I think it will be OK without it. It might be a Ford part as it is powder coated the same as the frame. Has anyone else heard of this part falling off or of being of any particular use in the first place?Attachment 18491
If it is a Thor MC then it is a MorRide part added to the Ford chassis by MorRide.
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Old 06-25-2019, 02:24 AM   #4
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I would have to crawl under my F53 and see if we have the piece on ours. Did U say it was off the passenger side of the frame? Unfortunately from the pics I wouldn't want to hazard a guess as to the lack of need for the piece. You may be able to do without but it has to serve some function, Ford or Thor wouldn't have wasted the time ($$) to put it on.
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Old 06-25-2019, 05:00 AM   #5
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Yes it was welded to the outside of the passenger side frame rail extending the length of the exhaust system from about the middle of the transmission back - which on my coach exits on the drivers side forward of the rear wheel. It hangs edgewise, I.e. with the flat sides facing sideways. Itís a pretty stout piece of steel but I donít see anything outboard of it that really needs any protection. Maybe the frame is prepared for different applications or models some of which are different underneath. I expect that if I ask the automatic response will be to take it to my dealer for evaluation and repair and Iím not greatly inclined to do so at this point.
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Old 06-25-2019, 12:05 PM   #6
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I would contact MorRide and send them pictures. It has to serve some purpose...my guess being a shield from exhaust heat or a piece to create a "wind channel" to assist with exhaust cooling. The cab and chassis is delivered to Thor ready for the body and Thor probably wouldn't have any idea what it's for....much less a dealer.
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Old 06-25-2019, 12:11 PM   #7
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Is there any way to support it on the side that isn't tacked to the frame?
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Old 06-25-2019, 06:51 PM   #8
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I would contact MorRide and send them pictures. It has to serve some purpose...my guess being a shield from exhaust heat or a piece to create a "wind channel" to assist with exhaust cooling. The cab and chassis is delivered to Thor ready for the body and Thor probably wouldn't have any idea what it's for....much less a dealer.


Thatís a good idea. Itís a good foot from the exhaust system and all of the wiring and other items are up along the frame anyways and so are already protected. The propane tank is nearby but it has its own shield.
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Old 06-25-2019, 06:56 PM   #9
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Is there any way to support it on the side that isn't tacked to the frame?


Iím not a welder but I probably could figure out a way to bolt it back on so it would stay for sure. I was about 2,000 miles into a 7,000 mile trip when it broke and Iíve driven about 1500 more miles now without it. Crawled underneath the other day at out camp site to better study things than I could do on the side of the road and I still donít see how it served much of any purpose.
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Old 06-25-2019, 07:05 PM   #10
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Wow, its a good think you found it and removed it before it fell off an hit a car or person.

That will leave a mark.
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Old 06-26-2019, 12:40 AM   #11
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This is how I would likely do it, drill 3/16" holes and use zip screws, the ones with a drill point at the end.
Pre drilling is easier than waiting on the zip screw point to dig through.
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Old 06-26-2019, 01:44 AM   #12
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This is how I would likely do it, drill 3/16" holes and use zip screws, the ones with a drill point at the end.
Pre drilling is easier than waiting on the zip screw point to dig through.


Iíd have to drill through the frame rail but itís just a ďCĒ section so it shouldnít be too hard. Iíll take a good look when I get home next month. I appreciate the suggestion.
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Old 06-26-2019, 10:52 AM   #13
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Iíd have to drill through the frame rail but itís just a ďCĒ section so it shouldnít be too hard. Iíll take a good look when I get home next month. I appreciate the suggestion.

My little nugget of advice...do not drill on frames...anywhere. Lightly tack welding is OK but laying to much heat into it or drilling holes in it can be a serious issue.
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Old 06-29-2019, 09:19 PM   #14
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My little nugget of advice...do not drill on frames...anywhere. Lightly tack welding is OK but laying to much heat into it or drilling holes in it can be a serious issue.


Had that thought as well. Iíve been about 2,000 miles now without the part and spent several hours stuck in city traffic with the engine running but sitting still. Went underneath today and I donít see anything the worse for it and I still donít see anything at risk. Iím close to deciding to just not worry about it.
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Old 06-29-2019, 09:28 PM   #15
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I can understand why you'd want to just let "sleeping dogs lie"; but please consider the cumulative effect of how that missing shield might change things...

I'm with Gritz: no drilling on frames.
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Old 06-29-2019, 10:46 PM   #16
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I can understand why you'd want to just let "sleeping dogs lie"; but please consider the cumulative effect of how that missing shield might change things...



I'm with Gritz: no drilling on frames.


Well thereís truck and trailer place near my house and I might run by and see what theyíd charge to weld it back on. It sure couldnít hurt to have it back where it came from. Appreciate the thoughts!
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Old 06-29-2019, 10:56 PM   #17
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Iíd have to drill through the frame rail but itís just a ďCĒ section so it shouldnít be too hard. Iíll take a good look when I get home next month. I appreciate the suggestion.
24,000 lbs and heaver frames have the 50,000 psi frame rails (hardened steel). The 16,000 lbs to 22,000 lbs frames use 36,000 psi steel which is mild steel. Adding Sumo springs which does not void the Ford warranty requires several holes for each spring. A plane old high speed steel drill goes right through the 9.16"x3.0"x0.25" frame rail.
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Old 06-29-2019, 11:07 PM   #18
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Well thereís truck and trailer place near my house and I might run by and see what theyíd charge to weld it back on. It sure couldnít hurt to have it back where it came from. Appreciate the thoughts!
Good luck with getting it nailed back in place!
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Old 06-30-2019, 12:48 AM   #19
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Good luck with getting it nailed back in place!


Thatís IT! I should nail it back on so I donít have to drill any holes! Should have thought of that earlier!!
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Old 07-01-2019, 02:41 AM   #20
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I can understand why you'd want to just let "sleeping dogs lie"; but please consider the cumulative effect of how that missing shield might change things...

I'm with Gritz: no drilling on frames.
I say don't drill frame either because it might just void any warranty and also creates a start for frame to rust out
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