[Rovernet] 3500S front brake bleed valve

[roger matheson]

Hi Geoff,

No ball.  The end of the screw is tapered and fits into a similar shaped 
cone in the caliper.  It is easy to screw them up too tight and then they 
get stuck.  I agree with all the above methods.  Let me add some more.  1. 
File two flats on either side of the screw so as to fit the largest shifting 
spanner you own. 2. Insert an "esyout" into the hole of the bleed screw as 
this will add twisting effort on any of the methods you try. 3. Some times a 
rounded screw isn't perfectly round, with a slightly smaller ring spanner 
see if you can tap it onto the screw with a hammer so as to carve grooves in 
the screw as the peeks of the spanner bite into the metal.  In Oz you can 
buy "Mole" locking pliers, also "Stilsons" .  There geometry in like pipe 
spanners which means that they grip tighter as you pull.  Alternatively use 
mutigrips but tighten a metal hose clamp over the ends of the handles to 
increase and maintain the squeezing grip. I would always soak in plenty of 
releasing fluid first.  Wire brush all dirt off the the screw so the fluid 
can penetrate into the thread.  When you have undone the screw, make sure 
you clean the mating surfaces and smear with brake fluid before putting in a 
new one and don't tighten it too much.

Please let us know how you go because I am not sure whether you guys hear us 
in Oz.
Cheers Roger
----- Original Message ----- 
From: "GeffMcCarthy" <geffandjulie at comcast.net>
To: "'Rovernet'" <rovernet at rovernet.org>
Sent: Thursday, November 21, 2013 10:23 AM
Subject: [Rovernet] 3500S front brake bleed valve


>I have rounded the 3/8 front bleed nipple, and cannot free it.  My 
>mechanic,
> Neville, needs to know if it is a taper, or a ball valve.  The calipers,
> AFAIK, are original, and I think, rebuilt by White Post.
>
> Help please!
>
>
>
> AvMedSafe
>
> Geoffrey W. McCarthy MD MBA DipAvMed
>
> 677 NW Melinda Ave Portland OR USA 97210
>
> 503-241-8468(h) 503-799-3809 (mobile)
>
>
>
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