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  #1  
Old 08-24-2003, 01:20 PM
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Location: UK - South East Coast
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Bonnet insulation adhesive?

Has anyone replaced their bonnet insulation yet?

I've replaced this on both the 190 and SL and both times used the wrong adhesive - as after two or so months the insulation starts to droop.

I've been through 3M's web site and still none the wiser!

Any suggestions?

Cheers
Lea
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'93 R129 500SL-32
'89 190E 2.6 - sold in 2002

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  #2  
Old 08-24-2003, 03:41 PM
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I've always been told to use 3M Spray Adhesive, which is a contact cement available at auto parts stores.

Ron
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  #3  
Old 08-24-2003, 04:58 PM
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Location: Colleyville, Texas
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I have never replaced a "bonnet" insulation. But I have replaced the hood insulation. Sorry I just had to .
Use 3M super trim adhesive, part number 08090. Here is the link for 3M in the UK

http://products3.3m.com/catalog/us/en001/government/innovative_solutions/node_HRZ5M9WFR5gs/root_GS3RBW6QFVgv/vroot_31S2JJ7584ge/bgel_H6CHJM2JP3bl/gvel_58V7QPRFG8gl/command_AbcPageHandler/theme_us_innovativesolutions_3_0

I R+R the hood insulation on the 300SDL about 6 years ago.
Place a plastic sheet over the entire engine compartment.
Use a PLASTIC putty knife to clean the hood of the old insulation. A metal one will scratch the paint off the hood and you now have a place for rust to form.
After scrapping the hood I used 3M weather strip adhesive remover ( 3m item number 08984) to clean the hood. I did NOT clean the hood until it was spotless. I don't think that is necessary.

http://products3.3m.com/catalog/us/en001/auto_marine_aero/automotive_aftermarket/node_GSSPN37QHGgs/root_GST1T4S9TCgv/vroot_GSLPLPKL4Xge/bgel_GSXXHHTMDNbl/gvel_WWR6DCKBSPgl/theme_us_aad_3_0/command_AbcPageHandler/output_html


Apply the adhesive as per the directions. 3 coats of adhesive, the 3rd one perpendicular to the first 2.
Allow it to dry 5 minutes. Then apply the insulation. Remember this is much like a contact cement. Once it has made contact your stuck with were you put it. Work from either the center out or from one corner out to the remaining 3 corners evenly. I actually worked from the turbo metal shield, to keep it from bendng out of shape. Yes you can remove it IF you have to, but it makes a mess out of the insulation, So carefully install the insulation. A couple of helpers makes the job go easier. You will need someone to hold the insulation while you apply it.
After you have the insulation installed use a rubber roller ( or wooden) to make the glue make as much contact as it can. This will ensure a strong bond. I used a roller that you do seams of wallpaper with.

The hood insulation was done 6 years ago and I do not have any sections that are releasing. Again follow directions and use a roller.

Dave
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1970 220D, owned 1980-1990
1980 240D, owned 1990-1992
1982 300TD, owned 1992-1993
1986 300SDL, owned 1993-2004
1999 E300, owned 1999-2003
1982 300TD, 213,880mi, owned since Nov 18, 1991- Aug 4, 2010 SOLD
1988 560SL, 100,000mi, owned since 1995
1965 Mustang Fastback Mileage Unknown(My sons)
1983 240D, 176,000mi (My daughers) owned since 2004
2007 Honda Accord EX-L I4 auto, the new daily driver
1985 300D 264,000mi Son's new daily driver.(sold)
2008 Hyundai Tiberon. Daughters new car

Last edited by dmorrison; 08-24-2003 at 11:15 PM.
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  #4  
Old 08-25-2003, 04:57 AM
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Location: UK - South East Coast
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Quote:
But I have replaced the hood insulation
Blimey - I didn't know the SL had insulation in the soft top!?! LOL!!


Anyway - Dave, you are the man!!

Exactly what I'm looking for, an adhesive bonding foam to metal with high temperature resistance. Unfortunately this product isn't listed on the UK site and therefore is perhaps only available in the US :-(

Maybe in the UK they re badge it, for some reason or another - but I guess a quick email to 3M will help out here.

Thanks for the replacement technique too. I previously never used the rubber roller , so that may be one of the reasons for my past failures too.

I'll let you know what 3M have to say.


Cheers
Lea

[Edit]

Ah - after some extensive 3M UK web site searching I think I have found it. Re-badged but with the same 08090 number.
http://products3.3m.com/catalog/uk/en002/auto_marine_aero/automotive_aftermarket/node_K9580115V5be/root_K3BHNB8005gv/vroot_CB1HCVHLJMge/gvel_50W71J5H7Vgl/theme_uk_aad_3_0/command_AbcPageHandler/output_html

Blimey their site is huge!
__________________
'93 R129 500SL-32
'89 190E 2.6 - sold in 2002

http://antron.pwp.blueyonder.co.uk/i...nature/Sig.jpg

Last edited by Learoy; 08-25-2003 at 05:40 AM.
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  #5  
Old 08-25-2003, 06:59 PM
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Replaced hood/bonnet insulation two years ago on 89 300e using 3m super trim adhesives (spray can). insulation still intact.
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  #6  
Old 08-26-2003, 12:49 AM
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Actually years ago, in the Mercedes Benz Club of America's magazine. Someone did sell an insulating insert to the convertible top. You know that part that is above your head when your driving and you have the soft top up because of a slight rain. Of course except for the few who would never drive their SL in the rain.
I really wish someone still made that. It clipped to the metal bars and folded with the top. Here in Texas with 105 degree weather, Sorry 40 degree weather, It would add that little extra insulation for the car.
A couple of weeks ago we sent europe an example of our typical 105 degree, again sorry, 40 degree hot weather, sucks doesn't it. So when are you going to send the 2-3 day steady rain that you guys get??????

Dave

PS I apoligize I thought I went to the 3M european section when I searched for the 3M products.

PPS Yes that is the product. Same number and same puke yellow color that we have here in the good ol US of A, But it do hold reeeal gooood!!!!!!
__________________
1970 220D, owned 1980-1990
1980 240D, owned 1990-1992
1982 300TD, owned 1992-1993
1986 300SDL, owned 1993-2004
1999 E300, owned 1999-2003
1982 300TD, 213,880mi, owned since Nov 18, 1991- Aug 4, 2010 SOLD
1988 560SL, 100,000mi, owned since 1995
1965 Mustang Fastback Mileage Unknown(My sons)
1983 240D, 176,000mi (My daughers) owned since 2004
2007 Honda Accord EX-L I4 auto, the new daily driver
1985 300D 264,000mi Son's new daily driver.(sold)
2008 Hyundai Tiberon. Daughters new car
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  #7  
Old 08-26-2003, 05:58 PM
kpr kpr is offline
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Location: winter park, fl
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go to home depot and buy liquid nails - two cans should do it. that is what my indie with 30yrs MB experience suggested. it works. i tried 3m first and was not as good.
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  #8  
Old 08-27-2003, 02:25 AM
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Have decided to stick with a product that is specifically designed for the job TBH. I don't think 'Liquid Nails' has a high enough temp. rating either - remember that your bonnet (hood) temp. can often reach 70-100 degs.

Finally tracked down an automotive distributer than sells 08090 - well they actually sell 08080 but have ordered 90 for me

I'll let you guys know how it all pans out.
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'93 R129 500SL-32
'89 190E 2.6 - sold in 2002

http://antron.pwp.blueyonder.co.uk/i...nature/Sig.jpg
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  #9  
Old 08-27-2003, 05:51 PM
kpr kpr is offline
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believe it or not, liquid nails has the right heat resistance. it was also recommended by my mechanic, who was with MB for 30yrs. good luck.
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