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Old 06-18-2019, 06:42 PM   #1
Skoolie
 
Join Date: Nov 2015
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Engine: 7.3L Navistar T444e Diesel
Ceiling removal hell/tracks

My skoolie had tie-down tracks just above the windows, front to back. Those came out easy.


I went to remove the ceiling panels today, and found that the anchors that once held the tracks to the ceiling are holding the ceiling to the body. They are like rivets with an open center for the bolts: like a threaded donut.



I banged them, tried cutting them, but won't budge without excessive banging and slamming after cutting.


Does anyone have any ideas how to get these things off?


I've attacked a picture.
IMG_7709.jpg
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Old 06-18-2019, 06:54 PM   #2
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Year: 1998
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Never seen the like before. Not that that'll slow me down in flappin' my keyboard atcha!
Is it possible the receivers are threaded into something behind the ceiling? Where are these threaded dog nuts at, in relation to the hat channels?
Have you tried taking a chisel, stamping a groove into the offending fastener, and then using hammer & chisel (at @45į) to spin it off. Unlikely, but may be left hand thread.
Could reinstall with LokTite, and use that as a corkscrew at last resort.

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Originally Posted by Joe45 View Post
My skoolie had tie-down tracks just above the windows, front to back. Those came out easy.


I went to remove the ceiling panels today, and found that the anchors that once held the tracks to the ceiling are holding the ceiling to the body. They are like rivets with an open center for the bolts: like a threaded donut.



I banged them, tried cutting them, but won't budge without excessive banging and slamming after cutting.


Does anyone have any ideas how to get these things off?


I've attacked a picture.
Attachment 34679
AHA!!! Theres your problem!
Attack the fitting, not the picture...
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Old 06-18-2019, 07:02 PM   #3
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Can't get behind them without removing the ceiling panels! Kind of a catch 22!!!
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Old 06-18-2019, 07:05 PM   #4
Skoolie
 
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Just had a thought: Maybe I can just cut off just above the horizontal frame piece that the nuts are fastened to and remove the panel above that. This would allow me to access them from behind.



Also, I can just leave that area below them and use those anchors to attach cabinets, etc.The area will be covered anyway.
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Old 06-18-2019, 07:09 PM   #5
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Rated Cap: I prefer broad-brims hats
That might be the more elegant solution. Its pretty obvious they aren't going ANYWHERE, easily. Heck of a sturdy place to hang an armoire!
Maybe hole saw the most inconspicuous one, to see what you're up against...
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Old 06-18-2019, 07:15 PM   #6
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Drill out the center?
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Old 06-18-2019, 07:19 PM   #7
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They are threaded inserts. You'll need to grind the flange off or drill them out. I would guess they would dull drill bits rapidly. I just put a bunch in my doors.
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Old 06-18-2019, 07:26 PM   #8
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You might be able to screw a screw with a nut on it onto it, tighten the nut down and then spin it out.
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Old 06-18-2019, 07:30 PM   #9
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Quote:
Originally Posted by Danjo View Post
You might be able to screw a screw with a nut on it onto it, tighten the nut down and then spin it out.
Not metal ones, that's like trying to spin out a pop rivet.

Threaded inserts are basically like a pop rivet the difference being the mandrel is threaded to pull the back of the insert forward. You squeeze it until it is sandwiched between the metal
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Old 06-18-2019, 08:30 PM   #10
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Holy cow! Yeah, I'd probably need a dozen brand new drill bits each!


I'm gonna go with cutting above them and leaving them in to anchor stuff.


Thank you all!


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