I found a nice hood pad at the junkyard from a 90s era MBZ (forget what model exactly) - it fit a w123 hood very closely.

I still need to attach it, that's a job I've been putting off. Originally it was clipped in, I may try that myself instead of glue.

The wire wheel I used wasn't aggressive. Just ran it on my cordless drill at low speed and it removed the last few spots of rubber that the scraper had trouble with. Everything else was scraped.

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5

? Maybe "goo Gone " ? .

Linky : https://www.google.com/search?client=firefox-b-1-d&q=goo+gone+target

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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

When I first cleaned the hoods on my 107 and 123 15 years or so ago, I was faced with same problem. How to remove build up of unknown adhesives.

I tried mineral spirits, acetone, carb cleaner and whatever other solvents I happened to have. They all worked to some extent but you end up with a gooey mess that has to be scraped off.

This time, what worked was initial peeling with the ice scraper,
followed by detailed scraping with various scrapers, plastic and metal
followed by hand and powered wire brush to remove the final stubborn spots
This left the even 3M sprayed on coating that will be a good substrate for next application.

I never tried citrus-based cleaners like goo-be-gone or 3M™ Adhesive Remover:

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5

THANK YOU ! .

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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

The most labour intensive and uncomfortable aspect of hood pad replacement would appear to be the scraping and gluing. So rigging some kind of mechanical attachment to eliminate that seems desirable.

Have you considered jamming slightly bent bars like fiberglass sail battens, pvc pipe, slender metal slats etc. between the side ridges underneath the hood at the edges using the spring tension thereby achieved to pin the pad to the hood in lieu of glue?

I used your picture to illustrate the concept:

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'83 SD, 2x '85 SD
You are entitled to your own opinions, you are not entitled to your own facts.

Imo, the wire bush on a cordless drill run on low speed would result in a rough surface which would give glue something to bond well to. It also seems that if the existing glue is going to be that difficult to remove it might be best to knock the high spots off of it and expect it to continue to stick.

This all interest me because a replacement hood insulation pad is in my future.

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84 300SD
85 380SE
83 528e
95 318ic

A strong (2000psi or higher) pressure washer with a 15degree fan tip took mine right off.

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Satan creates nothing: he only ruins everything. He does not invent: he tampers. And his followers are no different ~ Archbishop Carlo Maria Viganò

This is true. Industrial equipment as well as HVAC applications often use either weld on or adhesive pins. If an adhesive that will withstand the under hood temperatures was used, this type of installation might work. On my home A/C air handler they used those, but many of them have come loose. Need better adhesive!

https://www.buyinsulationproductstore.com/2-1-2-self-sticking-insul-hangers-w-washers/

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5

In my case, I would definitely leave the adhesive (it is 3M 8090) on the hood. It is well and truly adhered. As you say, maybe scuff up the surface a bit before applying new adhesive and pad.

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5

What did the pressure washer remove? The foam pad or the adhesive? The adhesive is the hard part to remove.

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5

It left a thin coat of adhesive. I used 3M marine 5200 in black to mount thermal padding.

Similar to this.

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Satan creates nothing: he only ruins everything. He does not invent: he tampers. And his followers are no different ~ Archbishop Carlo Maria Viganò

Having been in the boating business, I am quite familiar with 3M 5200. Basic rule was - use it if you never want to take the part off again It is very tenacious. Your pressure washer probably won't take that off!

I do like that aluminum covered pad. Is that available in rolls or sheet form? For the W123, it would likely be best if cut into pieces to fit between the reinforcing ribs of the hood.

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5

I’m fixing to replace the pad too but it may be the entire hood from the looks of it. The entire area under the pad is corroded pretty severely.
Regardless, as the title and brand suggests this adhesive is pretty amazing. It’s a 2-part poly-acrylic. The company sells all types of mounting fasteners as well but the glue is what you want for mounting hangars. Use there fastener or an elevator bolt which is basically a 1”-1-1/2” disc with a screw or bolt welded center And perpendicular to the mounting disc. A little dab on the disc, press the fastener to the surface, and it cures in seconds much like anerobic thread sealant. Now that I say it that may be an inexpensive alternative to the proprietary adhesive. You only need to clean the area where you mount them but measure thrice because onice you press on the fastener I can assure you that it’s not coming off.

Attached(no pun intended), is an overhead bin in my sprinter that runs the full length, is made out of 3/4” interior cabinet plywood, and stores awning supports, fishing poles, cleaning supplies, and supports our clothesline. If you own a Sprinter than you can attest to the amount of vibration, jarring, shaking these vans are subject to. In the Southwest sun the roof and ribs are too hot to touch. All that supports this shelf are Four 1/4”-20 elevator bolts and Welmount®️ Adhesive since 2006! Trust me, several 8-32 elevator screws will support a hood pad and it’s far and away easier than suggested alternatives.

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Everywhere I looked, it was pretty expensive! Where do you buy just the glue for a reasonable price?

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Graham
85 300D,72 350SL, 98 E320, Outback 2.5