Seat repair - Mercedes-Benz Forum
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#1 (permalink) Old 01-19-2006, 06:35 PM
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Seat repair

OK so I bought "pool noodles" and sheet foam, and have this site for help:

http://www.*****************/Wikka/W123SeatRepair

My question is how do you remove the backrest from the bottom cushion? I have the spare ugly seat to practice on before I tackle my car's seat.

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#2 (permalink) Old 01-19-2006, 07:20 PM
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RE: Seat repair

Oops went out of 30 mins, can't edit. If anybody doesn't know, I can make a DIY. We'll see, I'll try this tonight. It's gonna be my 2nd year here in BW anyway so maybe that'd be my "gift" for you all.

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#3 (permalink) Old 01-19-2006, 07:24 PM
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RE: Seat repair

After you get the seat out of the car, the plastic covers on the sides just pull off. Underneath those plastic covers, there are bolts holding the back on to the bottom. You will then want to put your weight on the seat to relieve the tension on the material in order to free it from the bottom part of the seat.

But by all means, please make a DIY. We should all make one while we're doing repairs.
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#4 (permalink) Old 01-19-2006, 07:26 PM
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RE: Seat repair

Oh wow, thanks for the quick reply. I'll do that, thanks!! [:D] Will post back if anything comes up...

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#5 (permalink) Old 01-19-2006, 08:13 PM
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RE: Seat repair

Good luck with the job, Karugs. Definitely worth practicing first...

The 'step by step' on that web link looks straight forward enough but I'll be interested to know if it is as simple as it looks, and if it doesn't feel lumpy to sit on!

Let us know how you get on.
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#6 (permalink) Old 01-20-2006, 03:38 AM
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Success!!!

Alright I did exactly as shown in the site I listed but did some modifications. I'll run a step by step process, just follow the pics.

1st image is the before shot. Yes my seats are quite used up even for 162000mi. My uncle was a big guy. Remove the four 10mm bolts on the seat rails, nearest the floor. You have to pull the seat forward/backwards and adjust the height in order to access the bolts. Now is also a good time to unhook the seatbelt plug/wiring found on the front bulkhead just below the front seat adjustment handle.

2nd image shows the part may or may not remove, depending on your preference. I removed it (just pull out horinzontally, be careful of a small tab 2 inches forward of the height adjust handle. Look for it from inside the rails. At the rear portion, use a small screwdriver to carefully pry it off the rear plastic piece (two of them, one on each rail). No need to remove those.

3rd image shows the knob you can just pry off with a screwdriver. There are three tabs on it, be careful as you don't want to break them.

4th image shows the two 13mm bolts you need to remove, make sure you remove it in this position so that the backrest won't fall on you if you're working alone (like I did--all throughout the procedure). There are four of these, two on each side. Suggest a ratchet wrench instead of a box/open end.

5th image shows horsehair inside. Amazingly, I don't have any breaks in the springs.

6th image shows the interior of the car without the seat. Clean it well after the entire thing is done (before you reinstall the seat, of course). I didn't have a vacuum cleaner with me so I brushed it towards the back floor so that when I vacuum it some time soon, I'll just remove the rear carpet.

7th image shows the two tie-downs you need to cut to release the seatbelt wire from the bottom cushion (as you'll be separating the bottom and back cushions).

8th image shows the backseat removed from the bottom cushion.

9th image is the bottom cushion before any modification.

10th image shows the pool noodles and foam.

11th image shows me removing the MB Tex. No need to have somebody sit on it, I just inverted it and pressed down with one hand while letting loose the long tabs that hold the 'tex in. Sometimes you have to repeatedly press on the cushion so that it will come loose.

12th image is the old horsehair. It was flimsy in the middle (explains the first image) while the edges were crusty.

13th image is the springs separated from the 'tex. The major part of this process is cleaning the spring tray. And boy was that a heavy piece! No wonder new parts go for $100+.

14th-16th images show how I assembled the pool noodles. I made a correction, however. Remove the horizontal pool noodle as it will only make the entire assembly too bulky. Just the U and its inverted counterpart. Also, the inner noodle back end protrudes slightly outside the tex border so I had to shave that off (didn't anymore take pics). Shave off as shown so that the noodles fit nicely.

17th image shows the foam setup and the extra noodles for lateral support and upper leg support. I added the front horizontal noodle (top one in this image) to add thigh support (being a student of Physical Therapy... [:p]). The two lateral (side) noodles do add alot of bolstering once it's done. Sorry I didn't take any measurements, but just make sure they're all fit and snug.

18th image shows the large portion of foam I initially used, then what I did was sit on it as how you would and cut it accordingly. From there trace the old horsehair padding (like in the site mentioned) or just cut it accordingly (like I did). Just make sure you have extra foam left, what happened to me was the side bolstering wasn't sufficient so I had to insert a 1.5 ft long foam piece that's roughly 4 inches wide so that the sides of the bottom cushion don't feel empty. Tuck them in nicely on the inverted bottom cushion 'tex before you invert it and place it on top of the spring/foam/noodle assembly. Be sure every area is covered well because once you install this in the car, there's no turning back (unless you're really patient). I did this at around 12midnight and finished around 2~ am then went for a drive to test it and cleaned up the entire place.

19th-20th images shows the bottom cushion already finished. I sat on it and installed the 'tex back onto the spring. This is where sitting/putting weight on it will help because the foam is now stronger and will resist more so the extra weight helped.

21th image shows the new seat in the car. Make sure you install the seatbelt wiring/plug BEFORE you bolt the four 13mm bolts back on. That way it's already under the seat by the time the backseat is installed. Then also make sure the guide rod on the center console slips onto the seatbelt harness to give that nice fit. I think it helps keep the seat within its position in an accident.

Well, that's it. I hope you liked this write-up and pictorial. The seat isn't perfect (has some bulge) but in time I will fix that. [8D]
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#7 (permalink) Old 01-20-2006, 04:00 AM
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RE: Seat repair

Nice job!!! I wish i had a camera at pick n pull when i had to strip the covers off the black seats i found there when i still had my car. The back seat is much easier ,but its the same process for the most part....we deff need a DIY for all the interior parts ..add ons and such ...speaking of which i have to find the pix of the ipod set up i made using a srew the ipod hip holder and the center wood trim from a 240 with the slot for the vent...just mount the hip holder to the wood trims crome strip with the srew going from the back through the slit to make a moving sliding holder so it moves when you turn.

sorry for stealing your post just thought of it so i felt the need to share...im so nice lol but great job back to the post.



if anyone does a back seat as well they better post pix or ill have to and im lazy.


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#8 (permalink) Old 01-20-2006, 04:06 AM
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RE: Seat repair

My backseat is in pretty good shape so I didn't bother. Maybe your best is to get one from the yard. Speaking of which, last I went to the yard there was a good back seat in palomino...

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#9 (permalink) Old 01-20-2006, 04:15 AM
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RE: Seat repair

Karug,

If you find a good interior in this color in your travels, let me know:



BTW, you're driver's seat looks pregnant!! Must've scared you to do that mod!
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#10 (permalink) Old 01-20-2006, 04:17 AM
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RE: Seat repair

Pls make this a sticky or something!! [:D]
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