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Rear sub frame Bushings W126 1985 300SD DIY
I will edit in the DIY later, to late tonight.
Here are the pictures.
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ASE Master Mechanic asemastermechanic@juno.com Prototype R&D/testing: Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician. Noise Vibration and Harshness (NVH). Dynamometer. Heat exchanger durability. HV-A/C Climate Control. Vehicle build. Fleet Durability Technical Quality Auditor. Automotive Technical Writer 1985 300SD 1983 300D 1984 190D 2003 Volvo V70 2002 Honda Civic https://www.boldegoist.com/ |
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Rear sub frame Bushings W126 1985 300SD DIY
More pictures.
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Wow, looks like you got your moneys worth out of those, were they transmitting alot of sound through the chassis?
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*************** This Space For Rent *************** |
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I found a neat use for mine when I recently replaced the subframe bushings.
They make a neat jack pad. Remove the steel cradle and insert a large bolt through the center of the bushing and you have a nice "padded" cradle.
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Sam 84 300SD 350K+ miles ( Blue Belle ) |
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Did mine this morning, they did not look as bad as those shown above, but the inner metal tube was separating from the rubber, and at the outer edge the main meat of the mount was pulling away from the edge.
Observations on the job:
I figure I'll drive around a bit more and see if the mounts seat the rest of the way. The rear end is certainly improved, and feels less "squishy" than it did. Kevin
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'85 300SD |
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I am wondering
I am still wondering if my rear subframe bushings need replacing. How did you know yours did?
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1982 300SD Light Blue 2002 Honda Accord SE 1974 Toro Wheel Horse Tractor 2000 Toyota Tundra Pickup |
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From what I have read it's an age/mileage thing - they all need them done by the time they're 20 years old and have over 150,000 miles.
Symptoms were a rear end that felt like it squirmed when changing lanes on the freeway. Kevin
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'85 300SD |
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Answer:
Quote:
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Sorry Roy, don't quite follow. Use a 2x4 to limit the subframe movement and then jack against the exposed bushing face with the floor jack?
It also occurs to me that it probably doesn't help that it was only in the low 40s yesterday, I wonder how much the sheet metal of the cup on the subframe expands with heat? Kevin
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'85 300SD |
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A picture
Quote:
Last edited by whunter; 02-06-2005 at 01:06 PM. |
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Thanks, I'll give that a try.
Kevin
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'85 300SD |
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Measurement Request - Two numbers
I have a request- Does anyone have a dismounted W126 rear subframe lying around? I was wondering if someone could please take a pair of measurements for me if they do.
I'm going to replace the rear subframe bushings and trailing arm bushings on my 1984 300SD, and I'm going to make 3 bushing tools to do so, imitating Mercedes special tools 126 589 00 33 00 and 126 589 01 33 00 for the rear subframe pusher/puller and 116 589 13 43 00 for the trailing arm bushings. I can design my trailing arm bushing tool with a trailing arm johnhef has sitting around, and I can make the subframe bushing pusher using numbers I get off the new bushings I have sitting next to me. To make the puller, I need to know the diameter of the hole in the rear subframe that the large bolt goes through (with an estimate of the tolerance of your number if possible). I also need the approximate thickness of the rear subframe. I marked both of the dimensions I need in the attached picture. Obviously I have this hole in my car, it's just that it's my only mode of transportation, and I'm trying to avoid having to drop the rear subframe just to make a measurement, then reattaching it only to need to drop it again to do the actual job. Thanks in advance, if you guys get me numbers I'll post pictures of my designs and the finished pieces!
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-Brian 1984 300SD, 375XXX miles, Light Ivory w/ Palomino TEX |
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