The New And Improved Unofficial R65 Forum V2

Technical Discussion => BMW Technical Q&A, Primarily R65 => Topic started by: quixotic on July 01, 2013, 06:57:14 PM

Title: Neutral switch leak
Post by: quixotic on July 01, 2013, 06:57:14 PM

Has anyone tried using Hi-temp silicone seal on this?  Or is the gear oil under pressure and just blows through?  

Title: Re: Neutral switch leak
Post by: Bob_Roller on July 01, 2013, 06:58:35 PM

The oil leak is through the switch itself, not around the threads .

The oil isn't under any pressure, there is a vent for the transmission, it's through the small hole drilled through the negative battery cable bolt at the speedometer drive cable area .

Title: Re: Neutral switch leak
Post by: nhmaf on July 01, 2013, 08:40:24 PM

The plastic internal body of the switch is generally the part that cracks and develops a leak.  There is an all-metal alternative, but I don't recall the brand at the moment.  If there is a leak on the thread area, it would indicate that a new crush washer is needed-

Title: Re: Neutral switch leak
Post by: montmil on July 02, 2013, 09:06:07 AM

Check Motobins for their R65 repop neutral switch. It's Italian made and mostly brass. Installed one on my '81 R65.

A more economical price than BMW OEM, no dribbles for years now and Royal Air Mail to Texas was less pricey than buying "local".