twybrow
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| posted on 27/5/09 at 06:07 PM |
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Help with parts! Brake light sensor sealing....
With my SVA retest on Friday, I have just been let down by Wrights Auto Supplies. I ordered a new 4-way M10 brake fitting, and hydraulic sealant. Now
I just got an email telling me it will be another 7-10 days before the parts are in stock.
I have a new brake light sensor (M10), but now, I don't have a new fitting, or any proven method of sealing the two.
Does anyone know where I might get these parts tomorrow?! Alternatively, any other suggestions for sealing up what I have? I have tried PTFE, fibre
washer, copper washer and blue goo (Hylomex?). The best seems to be the copper washer, but the fitting is still weeping slightly.
My final plan is to use the fitting I have, and the new switch, and pray. Please help.... I cant bring myself to cancel the retest over something so
trivial....
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twybrow
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| posted on 27/5/09 at 06:13 PM |
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Would a Dowty seal be acceptable? I can get those from work (Dowty!).
Plan C might be to switch all of the ports aroundl but I am guessing this will just move the problem....
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spdpug98
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| posted on 27/5/09 at 06:14 PM |
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If you mean a 4 way brass union I know that Namrick do them as I have just bought a couple from them
I have one sitting on the shelf as a spare if you get stuck, u2u me if it is what you need.
Edited to add: you are probably a bit too far away from me for it to be of any use - sorry
[Edited on 27/5/09 by spdpug98]
My Blog: http://spdpug98.wordpress.com/
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blakep82
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| posted on 27/5/09 at 06:14 PM |
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friday as in day after tomorrow? eek.
if it wasn't so soon i'd have said phone rally design, they're really good when you phone them.
but now they're not going to be able to send it til tomorrow.... hopefully you mean friday next week? 
________________________
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prawnabie
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| posted on 27/5/09 at 06:20 PM |
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I have a 10mm switch and a 3 way t piece on my car if you are desperate - im in bromsgrove.
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twybrow
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| posted on 27/5/09 at 06:22 PM |
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I mean Friday as in this Friday lunchtime!
If I could be 100% sure it would arrive, I could potentially have something delivered Friday morning, but it's one hell of a longshot....
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RichardK
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| posted on 27/5/09 at 06:22 PM |
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What about having a chat with a small local garage about what they would recommend and if they would be prepared to sell you whatever they suggest.
Cheers
Rich
Gallery updated 11/01/2011
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theconrodkid
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| posted on 27/5/09 at 06:23 PM |
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the brake switches are normaly tapered thread where pipe ends are straight and the flare on the pipe does the sealing.
use a dowty for the time being and do permafrost job when the bits arrive.
who cares who wins
pass the pork pies
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twybrow
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| posted on 27/5/09 at 06:26 PM |
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My next door neighbour is my small friendly garage, and I will be seeing him ASAP, but I suspect he will advise a new fitting....
How can I seal onto the brake switch? If I made up a short flared copper line, to run from the union to the switch, how dow I seal the switch? Would
an olive be SVA ok?
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twybrow
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| posted on 27/5/09 at 07:08 PM |
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Ok update - I had a dig around, and found some fittings that came with my Wilwood M/C. These are the correct male fitting to seal in the 4-way union,
but the female part is wrong. I was thinking I could drill out he fitting, and weld the two pieces together.... Can it be done without
blocking/melting the switch?! Effectively, I have a spare switch, so I might give it to a mate to TIG tomorrow (stainless fittings). Otherwise, it is
a Dowty seal, plenty of sealant, a wing and also a prayer!
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adithorp
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| posted on 27/5/09 at 10:25 PM |
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Is the problem that you can't get a seal on the union you have now?
Is it just sealing against the (outer) end?
If so can't you take it off and file it flat. Think you'd find ally' washers on them normally although copper would be the old
school method. To get a better seal with a copper washer, heat it then quench in water. That'll soften copper (opposite of the effect on steel)
and give a better seal.
adrian
"A witty saying proves nothing" Voltaire
http://jpsc.org.uk/forum/
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twybrow
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| posted on 28/5/09 at 11:15 PM |
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Finally sorted it (I hope!). I took it all apart. Cleaned up the union - which turned out had a damaged thread (overtightened). I then rotated the
union, so the brake sensor was in a different hole. I only did the sensor up finger tight, and it seems to have done the trick. I haven't tried
it in anger, but fingers crossed!
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