Preparation before applying 5200

estame6

Petty Officer 2nd Class
Joined
Sep 21, 2006
Messages
119
Preparing to apply 3m 5200 around thru transom out drives. Have thoroughly cleaned the area and but would like to wipe down area just in case. Can anyone suggest a product eg. alcohol, thinners, bleach to remove any lingering oil residue.
Many thanks for any suggestions.
 

Scott Danforth

Grumpy Vintage Moderator still playing with boats
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Jul 23, 2011
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49,581
tape off what you dont want the 5200 to get on.

if the area is exposed to sunlight, use 3M 4000 UV
 

estame6

Petty Officer 2nd Class
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Sep 21, 2006
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119
Thats great Scott. What product do you suggest to wash the area to make sure there are no contaminants. I mentioned a few but was just thinking of Acetone /MEK?
 
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dingbat

Supreme Mariner
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Nov 20, 2001
Messages
16,082
Surface Preparation:
There are waxes, coatings, sealants, grease, oil and other contaminants used in the marine industry, making it very important to clean all surfaces to be bonded before applying 3M TM Marine Adhesive/Sealant 5200. Recommended procedures include cleaning with 3M TM General Purpose Adhesive Cleaner*, P. N. 08984.

Hydrotreated Light Naphtha (Petroleum) 64742-49-0
Xylene 1330-20-7 30
Ethylbenzene 100-41-4 5
Toluene 108-88-3
Benzene 71-43-2


Limitations -
- Alcohol should not be used in preparation for bonding as it will stop the curing process, causing the adhesive to fail..
 
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estame6

Petty Officer 2nd Class
Joined
Sep 21, 2006
Messages
119
Thanks Dingbat, so anyone of these products will do the job?
I notice there all up there in price and only need enough to cove the end of a rag. Do any of these come in small containers from a box store?
Thanks

PS, just found just less than a pint of MEK in an old gallon can, would that do the trick?
 
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Grub54891

Admiral
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Jun 17, 2012
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6,078
Step 1: Throw out the 5200. Step 2: Get the 4000 or 4200. Step 3: As stated why seal the exterior of the outdrive? if it's leaking it's in need of transom work.
 

estame6

Petty Officer 2nd Class
Joined
Sep 21, 2006
Messages
119
Thanks Grub, understand. I haven't check much but always used 5200. What is the big difference between 4200 other than as mentioned the UV....
 

Grub54891

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Jun 17, 2012
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Thanks Grub, understand. I haven't check much but always used 5200. What is the big difference between 4200 other than as mentioned the UV....
4200 can be removed later if need be. 5200, not even the best adhesive remover will take it off.
 

estame6

Petty Officer 2nd Class
Joined
Sep 21, 2006
Messages
119
Thanks, I'm looking for some decent strength. Will 4200 give that?
 

dingbat

Supreme Mariner
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Nov 20, 2001
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16,082
Thanks, I'm looking for some decent strength. Will 4200 give that?
Are you sealing or using it to hold the drive on the back of the boat?
One would think the mounting bolts alone would suffice to attach it to the boat.
 

Regal_322

Recruit
Joined
Apr 28, 2022
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3
If you use 5200 where drive meets transom, you'll rip off chuncks of gelcoat when you have to remove the drive. Seen it happen a few times.
 
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