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#1 |
Cruzin
Join Date: Dec 2009
Location: on the road
Posts: 2,835
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Replacing cross sills
How hard is it to replace the cross sills? my short bed has some rust in one or two of the middle ones and i was thinking of replaceing them before winter thanks,
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Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14
Last edited by Hubscrub; 09-15-2010 at 10:35 PM. |
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#2 |
Cruzin
Join Date: Dec 2009
Location: on the road
Posts: 2,835
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Re: Replaceing cross sills
Ttt
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Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14
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#3 |
Registered User
![]() Join Date: Aug 2009
Location: Rochester, MN
Posts: 201
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Re: Replaceing cross sills
I have to replace the very front sill on my fleet side (have yet to do it). As far as I know they are spot welded into place. It's just a matter of drilling or grinding out the spot welds. The new sills need holes for rosette welds, you can do that with a drill bit or a punch tool.
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Blayne |
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#4 |
Cruzin
Join Date: Dec 2009
Location: on the road
Posts: 2,835
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Re: Replaceing cross sills
Thanks: i havent taken my bed off yet to fully see what is there
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Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14
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#5 |
Senior Member
Join Date: Jul 2010
Location: South Dakota
Posts: 4,093
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Re: Replaceing cross sills
There is a little bit of rott on my truck cross sill towards the back and am wondering the same thing.
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#6 |
Registered User
![]() Join Date: Aug 2009
Location: Rochester, MN
Posts: 201
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Re: Replaceing cross sills
I got inspired by the question so I dug into the front sill on my truck that needed replacing.
I started by trying to use a spot weld cutter. The spot weld cutter was not successful. Partly because there isn't a lot of room to get the drill perfectly perpendicular to the weld. I did have some success using a larger drill bit and drilling out the spot weld. Eventually I gave up on it as well because the bit became dull (I need a drill doctor). My final solution was to use an electric grinder to grind down 80 to 90% of the weld then used a pneumatic hammer to break the remainder of the weld. My hands are numb and I think at some point I briefly set myself on fire. Hearing protection with the hammer is a must. I have an old lab coat that I put on when I have to protect my arms from sparks. I think all the lab coat did was trap the sparks against my arms Not every point where the sill and the bed "folds" meet have a weld. In the middle it can be every other, or every third. At either end it is just about everyone for about three to four spots. I did end up tearing the spot weld through the bed in a couple of spots. My bed is heavily pitted and will be lined with Rhino lining so not a big deal. I'll just use those holes to spot weld from the top. The round hole at the top of the pic is one weld that I tore out, not terrible and can be easily fixed when the new sill goes into place. This is the sill off the truck, you can see how I ground into the sill to grind down the weld. The bed, post sill being removed. Here the sill has been completely removed. You can see the right hand side where it was rotted through. The sill was full of sand and dirt. Even though I have cleaned, and blown this sill out a couple times I had to stop and vacuum up big chunks of rusted metal and more sand. In all this took about 45 minutes even with all the changing of technique. I won't be installing a new sill for some time, the bed is going to be sandblasted so I'll wait till that's complete before the new one goes in.
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Blayne |
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#7 |
Cruzin
Join Date: Dec 2009
Location: on the road
Posts: 2,835
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Re: Replaceing cross sills
thanks i am going to hopefully pull my bed as soon as i get this motor project finished
__________________
Lime Wife's 67https://www.google.com/url?sa=t&rct=...wZEMODaS2d94u8 Back to the Fifties 59 https://www.google.com/url?sa=t&rct=...NAeStpydfrcj_U Proverbs 3:5,6 "Thanks to the Interstate Highway System, it is now possible to travel across the country from coast to coast without seeing anything."Charles Kuralt In memory of our first baby daughter, daddy and mommy love you. Danica Grace 6/26/14
Last edited by Hubscrub; 09-18-2010 at 05:38 PM. |
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