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#1
09-23-2011, 02:22 PM
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82 300D Rear Bumper Rubber Strip
I havea question about the rubber strip on the w123 sedan...
What makes is start to fall out? I noticed this happening on my car. There are "L" shaped fasteners in the rubber portion. This strip does not have any cracks in it. It will push back into the bumper, but does not stay put after a drive. How do I fix this? Thanks!
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K Last edited by rrgrassi; 09-23-2011 at 03:05 PM. 
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#3
09-23-2011, 03:07 PM
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Screws huh? I guess from the inside of the bumper...more crawling under the car...
I guess I can remove one and take it to a parts house or Fastenal. Thanks!
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K
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#4
09-23-2011, 03:08 PM
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See this:
W123 rear bumper rubber trim There are two pieces of hard plastic that need to be held in place, then the rubber strip can be installed.
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83 SD 84 CD
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#5
09-23-2011, 03:16 PM
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Ok, looks like I need to do some work from inside the bumper, as the L shaped pieces are in really good shape.
Thanks guys!
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RRGrassi 70's Southern Pacific #5608 Fairmont A-4 MOW car 13 VW JSW 2.0 TDI 193K, Tuned with DPF and EGR Delete. 91 W124 300D Turbo replaced, Pressure W/G actuator installed. 210K 90 Dodge D250 5.9 Cummins/5 speed. 400K
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#6
09-23-2011, 03:57 PM
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I am having the same problem I guess. My rear bumper rub strip (and the inside plastic runner) has popped out of its holes in the bumper in the middle. It's still anchored at each end... so I have this sort of saggy butt thing going off my bumper.
Or if you prefer my bumper rub strip is giving the butt end of the car a crooked smile.... My left plastic runner is fine. The right one was cracked and loose so I replaced it. So I need to put some screws in to securely hold the runner in place?
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 Mac 2002 e320 4matic estate│1985 300d│1980 300td Previous: 1979 & 1982 & 1983 300sd │ 1982 240d “Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22
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#7
09-23-2011, 04:05 PM
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I dont know what yall mean by plastic retainer--runner, they just got tabs that go into the slots in the bumper as far as I know. when the tabs break--its screw time. just dont drill all the way thur to the face of the strip
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#8
09-23-2011, 04:28 PM
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Quote:
None of my tabs are broken off. And the right side is brand new, just installed. But the whole shebang popped out of place and is drooping down.
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Mac 2002 e320 4matic estate│1985 300d│1980 300td Previous: 1979 & 1982 & 1983 300sd │ 1982 240d “Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22
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#9
09-23-2011, 05:01 PM
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The two plastic pieces fit into the slots, the "L" part and need to be held away from each other while the rubber strip is installed on those plastic pieces.
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83 SD 84 CD
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#10
09-23-2011, 05:08 PM
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Quote:
__________________
Mac 2002 e320 4matic estate│1985 300d│1980 300td Previous: 1979 & 1982 & 1983 300sd │ 1982 240d “Let's take a drive into the middle of nowhere with a packet of Marlboro lights and talk about our lives.” ― Joseph Heller, Catch-22
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#11
09-23-2011, 05:48 PM
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Somewhere here I've posted pics. I used kite string to tie each side tightly away from each other, which allowed me to get the rubber strip on.
I can't upload a pic now and the previous pics don't show that.
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83 SD 84 CD
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#12
09-23-2011, 09:46 PM
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No need to screw them in (this applies for the later model W123 bumpers w/ plastic rails).
What I did was crawl underneath and push the L shaped tabs back into place using an L-shaped long nose pliers. The plastic rails need to be fastened in between as mentioned and this should hold the rails together. When one of the rails slips laterally the L shaped mounts slip out and you get the sagging impact strips.
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http://farm8.staticflickr.com/7271/7...144c3fc1dc.jpg
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#13
09-23-2011, 10:27 PM
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Screws help
After chronic issues with this, I decided to use screws to more firmly attach the plastic strip. With the strip off the car, I drilled small pilot holes in each L bracket, perpendicular to the L (and the strip). Then I inserted the plastic strip on the bumper. From underneath the car, I inserted small screws into the pilot holes, again perpendicular to the strip/bumper. You don't have much room to work with, but the screws should be long enough to really lock the L in place, and prevent it from slipping out through the holes in the bumper.
This is a knucklebuster, but it has worked for me. 2+ years since this improvement, and no problems.
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-1985 300TD - 324k mi on chassis. MB "Tauschaggregat" 617 motor + 4-speed conversion Alaska Roadtrip 2009 -2002 E320 Wagon - 197k mi -1998 E320 Wagon - 310k mi - retired
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#14
10-12-2022, 12:17 AM
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Drill a small vertical hole in each L-bracket. Thread a wire though both to tie them together. this will prevent the L-brackets from sliding. See attached picture
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