I'm having trouble getting about half of these big a$$ screws out of the wall seat track mounting rail. Some just zipped out and the others just spin. Is there a caged nut on the back side which let go and is now spinning? I'll go medieval on it if I need to and grind it off but just wondering why it's spinning.
(https://busconversionmagazine.com/forum/proxy.php?request=http%3A%2F%2Fi142.photobucket.com%2Falbums%2Fr108%2F551stsuburban%2F1986%2520MCI%2520MC9%2F005_zpsoall7up2.jpg&hash=8d7e5b8df44c6ac53c40d6a6d11988f26403b812) (http://s142.photobucket.com/user/551stsuburban/media/1986%20MCI%20MC9/005_zpsoall7up2.jpg.html)
I can't be sure what's behind there, but when we stripped our MCI in prep for conversion, the angle grinder with a cutoff wheel was literally the only tool for most of the process. We bought two of them and Heather and I went at it together. That's what I think on that particular screw in your picture...grind 'er off!
Probably has riv-nuts or equiv on some locations. Just get an angle grinder with a cutting blade. Drilling is going to take too long, but is an option.
air chisel. Flat blade also get a sheet metal cutting blade to use later (sort of looks like a fork with a dropped center) . It's more fun when demo is done!
$30 air chisel.
--Geoff
Angle grinder on those. Too big for an air chisel.
http://www.gumpydog.com/Bus/MC9_WIP/Structural/Ductwork_And_Air_Vent_Panel_Removal/ductwork_and_air_vent_panel_removal.htm (http://www.gumpydog.com/Bus/MC9_WIP/Structural/Ductwork_And_Air_Vent_Panel_Removal/ductwork_and_air_vent_panel_removal.htm)
I used an angle grinder. They appeared to have a threaded plate that slid into a track allowing them to move a little but some of them ended up spinning in a complete circle so the angle grinder was the tool of choice. They are tough.
Air chisel.
I used my grinder with a cutoff wheel to make it look like a big flat head screw, then used a cold chisel to split the halves off. Only took a minute or two for each one.
thats nothin' if you have a wash room there is were the fun starts !!! to remove !!
dave
Angle grinder; electric...$21.99 Harbor Freight. Don't need an air supply or run the bus or buy hose.:}
Oh hell. Man up. Use a 1" cold chisel and 5 lb hand maul! Every busnut needs to build upper body strength.
Craig, I'm pretty sure my wife used her teeth to chisel the screw heads and rivets.
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Quote from: gumpy on May 27, 2015, 06:56:04 PM
Oh hell. Man up. Use a 1" cold chisel and 5 lb hand maul! Every busnut needs to build upper body strength.
Upper body? I'm all potential muscle! I'm using my grinder.
Bruce
I hit them with a hammer before using the biggest phillops head I could find. lvmci...
I cut mine with a grinder
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I used a sawzall behind the rail after getting one screw out could pry the rail out enough to get the blade in. Cut right through the bolt.