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#1
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w123 Floor Rust repair
My daily driver (1984 300D) had a leak into the interior from corrosion behind the battery. This led to the passenger rear foot well having a rust hole which I discovered by pulling up the carpet one day.
The entire seam between the floor and the rocker panel up to the front wheel well decided to rust out as well. I managed to park the car for a few days and weld in some new metal and new rubberized undercoating, but just finished it enough to get the car back on the road. Fast forward to a year later I find the driver's rear floor carpet soaked. I dry it out, no rust to be seen. A month following that I notice that my right foot is cold and the pedal seems soft. Check underneath the car and the pedal mounting tab has rusted through the bottom of the car. While I'm trying to find a place to store the care while I fix it, I'm driving long distance on business and the driver's seat leans a bit too far in one corner. Yup. The right rear seat mount has also rusted through the floor. Time to fix it all. So here's the damage. The pedal pulled out of the body without any force. I just detached it from the linkage rod. (Yes, that is undercoating on the bottom) [/url] Once I removed the driver's seat, carpeting and chiseled away the asphalt sound insulation. This is what I found. And after the partially rusted out seat channel was removed.
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Onus probandi incumbit ei qui dicit, non ei qui negat I recondition w123/w126/w124/w140/r107/r129/ steering boxes! 1984 300D "Elsa" odo reset 6/2011 147k 1983 300TD "Mitzi" ~268k OM603 powered 1995 E300 "Adelheid" 262k [Sold] |
#2
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Since I didn't know initially what parts of the floor were still metal and which ones were just undercoating and sound deadening material sandwiched around rust, I ordered both full floor pans and the passenger side rocker panel.
I cut out a decent amount around the pedal, with both the depressions for the pedal and fuel lines collecting sitting water. This is almost fully welded in. I'll take more pictures after it's ground and sealed. Here's the patch underneath the seat. Only partially welded at this point.
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Onus probandi incumbit ei qui dicit, non ei qui negat I recondition w123/w126/w124/w140/r107/r129/ steering boxes! 1984 300D "Elsa" odo reset 6/2011 147k 1983 300TD "Mitzi" ~268k OM603 powered 1995 E300 "Adelheid" 262k [Sold] |
#3
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As I Always Say :
RUST NEVER SLEEPS .
Who makes those patch panels ? .
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-Nate 1982 240D 408,XXX miles Ignorance is the mother of suspicion and fear is the father I did then what I knew how to do ~ now that I know better I do better |
#4
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The vendor (JC Whitney) I bought them from said they were Key Parts but they turned out to be Klokkerholm.
Each pan was $78 The rocker panel was $40 Shipping was $79 Total of $292 after taxes. Totally worth it. |
#5
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You probably know this. Protect the glass when grinding. The sparks can melt into the glass. I try not to learn things the hard way but there are exceptions over the years..
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#6
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Awesome job... on all levels!!!!
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'84 300D (211k) *New*... (Wife's) '85 300TD (174K) 10th Year... (Mine) '96 F-350 7.3L Dually (149K) Since New '85 300D (156K) ~~~Wrecked~~~ Damn it! (parts) '84 300D (176k) ~~~Wrecked~~~ Damn it! (parts) |
#7
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I completely forgot that. Although I'm grinding in an area that's pretty shielded, I'll be covering the glass now.
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Onus probandi incumbit ei qui dicit, non ei qui negat I recondition w123/w126/w124/w140/r107/r129/ steering boxes! 1984 300D "Elsa" odo reset 6/2011 147k 1983 300TD "Mitzi" ~268k OM603 powered 1995 E300 "Adelheid" 262k [Sold] |
#8
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How about a picture of the welding machine.
For other peoples info. I read that if you put a Copper bar behind when you welding thin material it decreases the chance of burning a hole through it. I bought a bar of copper 6x1 inch 3/16 thick. And tried that using a Flux Core welder and it helps a lot. However, you have to be able to keep the bar up against the back of the metal.
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84 300D, 82 Volvo 244Gl Diesel |
#9
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Good work M!
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC] ..I also have a 427 Cobra replica with an aluminum chassis. |
#10
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Patch Panels
So then ;
The metal is good quality ? .
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-Nate 1982 240D 408,XXX miles Ignorance is the mother of suspicion and fear is the father I did then what I knew how to do ~ now that I know better I do better |
#11
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Yesterday's progress.
Cut a section of rust out. In goes the patch. (about 2 hours to get it to fit well) Coated it with weld thru primer. Those are magnets I bought to hold things in place. Got them from Eastwood. Totally worth purchasing. https://www.eastwood.com/stitch-weld-magnets.html Tacked in. Now about a thousand stitch welds and we can grind it smooth and get on to the next patch.
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Onus probandi incumbit ei qui dicit, non ei qui negat I recondition w123/w126/w124/w140/r107/r129/ steering boxes! 1984 300D "Elsa" odo reset 6/2011 147k 1983 300TD "Mitzi" ~268k OM603 powered 1995 E300 "Adelheid" 262k [Sold] |
#12
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The stampings aren't exact and you'll have to work with them a bit to get them to fit the factory metal. I'll try to grab some pictures of the complex curves that don't really work.
But as the factory metal is over ten times as much... yeah, its good enough.
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Onus probandi incumbit ei qui dicit, non ei qui negat I recondition w123/w126/w124/w140/r107/r129/ steering boxes! 1984 300D "Elsa" odo reset 6/2011 147k 1983 300TD "Mitzi" ~268k OM603 powered 1995 E300 "Adelheid" 262k [Sold] |
#13
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Nice job. I hate rust
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#14
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That is lookin good!
When it gets time to paint, or coat it in something. I can't recommend enough something like "Rust Bullet"- Amazon, or Miracle Paint(Ebay, or Bill Hirsch). It drys because of moisture, so even on a wet day. Hardens like shiny smooth concrete. Yet somehow not brittle.. Way better than cheap black paint.. Both work amazingly well. The combo of one of these epoxy paints, a welder, and some fiber glass means you can do almost anything.. Needless to say use a respirator. |
#15
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Quote:
Eastwood Brushable Seam Sealer (on all welded seams) https://www.eastwood.com/ew-brush-on-seam-sealer-quart.html Rust Encapsulator Plus https://www.eastwood.com/eastwood-rust-encapsulator-plus.html And for the box sections of the body, Internal Frame Coating. https://www.eastwood.com/eastwood-internal-frame-coating-14oz-aerosol.html Depending on how the Rust Encapsulator looks, I might paint over it with something else. I'm using Kilmat 80 mil sound deadening material on the floor and over the transmission tunnel. If I have enough I'll add it to the doors. https://kilmat.com/
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Onus probandi incumbit ei qui dicit, non ei qui negat I recondition w123/w126/w124/w140/r107/r129/ steering boxes! 1984 300D "Elsa" odo reset 6/2011 147k 1983 300TD "Mitzi" ~268k OM603 powered 1995 E300 "Adelheid" 262k [Sold] |
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