Jota front brake switch

ngiles

ngiles

Senior member
Location
Sydney, Australia
In readiness for club registration I checked the lights etc and find the front brake switch is not working. Rear one is working and if I circumvent the front hydraulic switch by putting a wire across the two connectors then the brake light can be made to turn on, so the problem is with the switch not activating.  Not familiar with it but some questions:

- To remove switch - does that require the brake fluid to be drained and then re-bled as I assume once the switch is unscrewed fluid will dribble out of the hole
- Is the switch serviceable or is it likely that I will need to buy a new one - if the latter I see the one in the image attached offered by a place in the UK - but does anyone know of a local supplier of a replacement switch?

Thanks, Nick

 

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The NSW club has some spares, Bretts the bloke who would know. I don't think there serviceable and yes it will leak and need bleeding, but the other blokes, Brett and Marty are better at this than me. There are a couple of other local but interstate parts suppliers about if Brett doesn't have one.
 
If you are quick enough and have the replacement ready to go with the sealing washer you can get away with hardly losing a drop of fluid and the small bubble that may remain in there can work its way to the top.
 
Nick
As its part of the brakes would suggest not trying to service it as if it leaks...........you could loose your brakes worst case scenerio.

The club does not carry stop light switches. Front and rear switches are different length.

Contrary to what Vince has suggested we do not carry every single part for all models, we usually only carry Laverda specific parts and as these switches are generic to a few marques you should be able to find locally. 

Some Ducrappies used the same switches so you could try Gowanloch's, or as some Guzzi's also used then Motociclo may also be able to assist. Or if you are lucky your local motor factor may be able to assist as some early 12v Dak Dak's used to use the same switch back in the day.

If you luck out and can wait till the weekend then could probably did you out one of my spares and you could replace when you get one.
Anything to get another Lav back on the road.

Say here's a pic I managed to dig out of my old 80 Jota taken only a few years ago ( I wish.........that would have been taken in 81 best guess........

AdrOoc.jpg


SrFxUY.jpg

 
nice period pics, thanks for sharing!

Nick, to your problem and if you do not have proper vacuum gauge for bleeding the brakes, I have a "road-side-trick" how to do it:

First thing I do is to make sure the pistons in the calipers move freely. Then - if the break pads are not worn enough - take some old break-pads and replace the good ones with the old ones (make sure you mark them to know which was where...!!). Now I pump until the pads reach the brake disk again and stay there. if it is really road-side, you can also simply take the calipers off, put a spanner between the pads that is for sure slimer than the disk and follow the next steps after pumping out the pistons as much as possible without causing them to leak.

Next you take off the switch or what ever you want to replace, mount the new one and afterwards press the pistons back into the caliper as much as possible. This will pump all air up into the reservoir (make sure that ones is not overfloating...).

Now, I replace the old brake-pads with the better ones and pump until the brake-pads touch the disk again and build up proper resistance.

last I would replace the whole liquid asap at a bike dealer.

HTH
 
Nick. Hydraulic brake light switches can be found at pretty much any auto parts supplier or brake shop. Just be aware that different manufacturers use different threads in their brake systems  Make sure that whatever switch you buy has M10 x 1.0 thread. That thread is pretty much universal for Brembo brake systems.

For example, Japanese vehicles tend to use M10 x 1.25 while European are mostly M10 x 1.0. Most brake systems these days are metric, but I'd guess that some old British or American vehicles might use imperial threads such as BSP or NPT.

Harley Davidsons use M10 x 1.0 so you could pop into your local Harley shop and grab one.
 
Thanks all - I have ordered a replacement and so should be fitting it next week.  Appreciate all of the help and will let you know how I go!

Cheers, Nick
 
We all love to see another Laverda on the road, they're great fun to ride as opposed to just being shinny to look at.
 
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