Grimeca master cylinder front brake light switch

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Greybeard
Posts: 108
Joined: 27 Oct 2018 18:47
Location: Cottingham
Location: East Yorkshire

Grimeca master cylinder front brake light switch

Post by Greybeard »

Hello, folks.
My '82 3 1/2, a triple disc jobbie, has the Grimeca front master cylinder with a built in stop light switch. Needless to say the switch ain't doing its allotted task so may need replacing unless I can revive it with repeated injections of WD40 :roll:
Before I attack it further, does anyone know whether these are a screw in switch like some of the Jap ones I've seen (though I've seen those with spanner flats on the switch body) or is it a press fit?
The overhaul of the bike is coming along well and it's really now just the fine details that need seeing to.

Regards. Steve
3potjohn
Posts: 1243
Joined: 02 Jun 2007 13:58
Location: Devon

Re: Grimeca master cylinder front brake light switch

Post by 3potjohn »

My 3 disk K had a screw in switch with 2 small spade terminals which also failed.I just got one from down the road ,a Japanese item which did the job and i took the trouble to fit heatshrink over the terminal end.I think the shop in question has stopped selling bits in favour of whole bikes otherwise Id get you one.dead cheap though.
John
Greybeard
Posts: 108
Joined: 27 Oct 2018 18:47
Location: Cottingham
Location: East Yorkshire

Re: Grimeca master cylinder front brake light switch

Post by Greybeard »

Thanks, John.
I shall grasp the nettle - well the switch anyway - with pliers and give it a twist :wink:
Good tip re the heat shrink too.

Steve
EVguru
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Joined: 01 Aug 2006 11:13
Location: Luton
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Re: Grimeca master cylinder front brake light switch

Post by EVguru »

It's a screw in switch and I recall the same as fitted to some Hondas. I also recall it's an imperial thread; 1/4" UNEF (32tpi), but 1/4" ME (model engineer) will work too.
Paul Compton
http://www.morini-mania.co.uk
http://www.youtube.com/user/EVguru
Greybeard
Posts: 108
Joined: 27 Oct 2018 18:47
Location: Cottingham
Location: East Yorkshire

Re: Grimeca master cylinder front brake light switch

Post by Greybeard »

I did wonder whether it was a screw in one, Paul, hence my question. The body of the switch has a slight knurling on it but no flats for a spanner - and not a lot of room for any pointed pliers either. 1/4 ME I can do, thanks for the info.
As the switch is jiggered anyway, there's nowt to be lost in giving it a forceful tweak in the morning :)

Steve
EVguru
Posts: 1528
Joined: 01 Aug 2006 11:13
Location: Luton
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Re: Grimeca master cylinder front brake light switch

Post by EVguru »

Left hand drill bit.
Paul Compton
http://www.morini-mania.co.uk
http://www.youtube.com/user/EVguru
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