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Old 25-05-2022, 17:12   #1
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Yanmar 3GM30 Gear Case Gasket and sealant

I'm getting ready to re-install the Gear Case cover on my 3GM30F. According the the Seloc manual, I'm to coat both sides of the gasket with Threebond 3B8-500. Here's my problem - can't find that anywhere so not sure just what it is.

I'm not comfortable using anything on a new gasket, but I get why the manual might advise it.

I've seen MANY posts on this subject, but they've all left me confused. Any suggestions on the replacement for Threebond?
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Old 25-05-2022, 19:00   #2
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Re: Yanmar 3GM30 Gear Case Gasket and sealant

Threebond 3B8-500 (or 3B8-005) does not appear in the current Threebond catalogue
https://threebond.com/wp-content/upl...ver6-LOCAL.pdf

However your application for the gear case casket is not hi tech. Any of the multitude of gasket cements will do the job.

IMO - if both surfaces are clean, flat and corrosion free, the gasket alone is sufficient but if you are belts and braces type of person, a thin smear of any oil resistant gasket sealer could be used. There is no pressure requirements in this application.
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