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Dielectric grease

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Dielectric grease
Started at 07:39am on the 2nd November, 2018 by Clement
Clement Subject: Dielectric grease
A while ago (forgot when) the suggestion was made to pull every connector apart and apply a thin layer of dielectric grease to shut out moisture and prevent corrosion. Dielectric grease is non-conductive: the rationale seems to be that the connecting metal parts will push the grease aside so you achieve still good connectivity while sealing off against moisture etc. Have you tried this and is the rationale okay? Clement
Posted: 07:39am 2nd November, 2018
RoSy Subject: Dielectric grease
I've done this on several previous bikes, not Enfields so far, and found it it works at keeping moisture out where a connector may be exposed to direct water ingress. I shall do the same to my new C5 as I come across connectors that might need it. I just smear the pins / sockets and the sliding part. I can only assume it works as I never experienced a problem, so I would say yes go ahead. Is what I did do, is to do one two connectors at a time over a period of time so you would know if it was ok. No good doing them all and finding the bike won't start or lights not working, where would one start to look?
Posted: 08:56am 2nd November, 2018
ed.lazda Subject: Dielectric grease
Contacts with a microscopic film of grease or oxide can still conduct electricity by the phenomenon of quantum barrier penetration.
Posted: 09:50am 2nd November, 2018
John L Subject: Dielectric grease
+ 1 to excellent advice from RoSy. Aside from its waterproofing abilities, also enables you to pull connection apart (as opposed to simply pulling connector off the cable)......!
Posted: 09:51am 2nd November, 2018
stinkwheel Subject: Dielectric grease
The dielectric grease I use is an aerosol silicone grease with a straw. It's quite thin. You can squirt it into already assembled connectors too.

You could use most greases for motorcycle electrical connections. If you had a knife switch carrying 50KV, then a dielectric grease would be essential because the arcing could break down or set fire to a standard grease but motorcycle electrics aren't going to stress it that way. Many people use Vaseline. The main reason for using dielectric grease specifically is it is silicone based and as such, won't attack any insulation or rubbers.
Posted: 12:10pm 2nd November, 2018
Clement Subject: Dielectric grease
Thank you for your replies. I will go with it. Clement
Posted: 06:37pm 3rd November, 2018
ed.lazda Subject: Dielectric grease
I put a drop of ACF50 on the terminal before connecting up.
Posted: 10:09am 5th November, 2018
mart Subject: Dielectric grease
Vaselene ( petroleum jelly ) does the same thing
Posted: 10:44am 5th November, 2018
mart Subject: Dielectric grease
oops! - should have read Stinkwheels reply first
Posted: 10:49am 5th November, 2018
Clement Subject: Dielectric grease
Just to let you know how I got on: I applied the grease to most of the connectors. Lights, horn, ignition etc etc still working fine so nothing lost in the process and hopefully better connectivity and some future corrosion proofing. Big plus was pulling a 3 pin connector apart which was already white with corrosion so could be cleaned up. Clement
Posted: 05:33am 30th November, 2018
Wheaters Subject: Dielectric grease
I began building a small sports /trials car (a Liege) in 1999. It's had a relatively hard life, about 50,000 miles on it now, including being driven through river fords and mud etc. Having sprayed Waxoyl inside the chassis members before I put the bodyshell on I still had a few litres left so I painted the stuff everywhere I thought water ingress might cause problems, including all nuts and bolts on the chassis. I also did inside all the light fittings (it has separate headlight bowls) and most of the external electrical system bullet and spade connectors (I made the wiring harness myself). Folk say Waxoyl can adversely affect plastic wiring sheathing, but the car is approaching twenty years old and so far it doesn't appear to have done so at all.
Posted: 10:02am 30th November, 2018
Adrian Subject: Dielectric grease
I remember Waxoyl being advertised alongside Hammerite... Is it that time already, Nurse?

Posted: 11:33am 30th November, 2018

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