Replacing 3 point non-retracting seat belts with retractable belts - Page 2 - Mercedes-Benz Forum

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post #11 of 16 (permalink) Old 10-14-2011, 09:03 PM Thread Starter
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Yeah, different year, different model, different body type.

I guess no one has the answer for us, wbain. I was really hoping not to have to put in a new anchor point. I guess it was just wishful thinking. There is a rectangular hole in the sill, maybe five inches in front of the one anchor. Not sure what it's for. Maybe I'll try to mount an anchor plate behind it, but I'm not even sure how to access that area. It seems to be a contained, closed off space.
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post #12 of 16 (permalink) Old 10-15-2011, 06:10 AM
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The retractable and the other end bolt through the outside floor sill together
So in summary, the seat belt is a 3 point mounting
1. Retrator and other end secured together on the outside floor sill near door
2. Flexible receptacle seat clip mounted on the inside floor sill, above drive line hump
3. Top shoulder mount by window
I would assume a 4 door is similar
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post #13 of 16 (permalink) Old 10-16-2011, 01:59 AM
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Originally Posted by Elwood911 View Post
. Problem is that for retracting seat belts, it seems like there needs to be a second anchor on the sills. Do you know if it's possible to mount both the retractor and the belt's end to the same anchor point?
Ahhh, I understand. I used the same bottom anchor point for the retractor mechanism and the actual end of the belt.

The upper anchor point is what I used for the ... <name that I forget of the thing that the belt loops through>.
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post #14 of 16 (permalink) Old 10-16-2011, 07:01 AM Thread Starter
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Thanks for the responses. I'm going to try to mount the belts from the one anchor point in each sill. I think I'll have to get a bracket made to pull it off with the belts I have due to some tight space constraints, but it definitely helps to know that I don't have to deal with adding a new anchor.
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post #15 of 16 (permalink) Old 10-16-2011, 07:45 AM
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You could run into a problem with some aftermarket belt mechanisms. They are designed to pull straight up and will lock if they are pulled at an angle.

I installed a set in my 250C using the single anchor and whenever someone kicks the retractor mechanism getting in or out of the rear seat it tends to lock the device. Gotta piddle around with it and get it pointed up straight for it to extend.

I'm going to drill another hole and anchor them separately to solve the problem. You might not run into this problem in a sedan.
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post #16 of 16 (permalink) Old 10-16-2011, 08:01 AM Thread Starter
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Thanks Mike D. That could be a problem in a 108 as well, as the anchor point is far back enough to be kick-able by a passenger, and the belts I have do require mounting vertically. I guess I'll try first and see if it's a problem, because there is definitely enough space for a passenger to get in and out without kicking the retractor if they are warned not to.
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