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RE: Brakes

To: "'Ben Prince'" <blprince2@comcast.net>,
Subject: RE: Brakes
From: "Michael Salter" <michaelsalter@rogers.com>
Date: Sun, 16 Jan 2005 08:31:27 -0500
Hi Ben,
First I need to know if, when you open a bleed screw, with the reservoir
full, does fluid run or at least drip out?

Michael Salter
www.precisionsportscar.com
 

-----Original Message-----
From: Ben Prince [mailto:blprince2@comcast.net] 
Sent: Saturday, January 15, 2005 11:59 PM
To: Michael Salter; Healeys
Subject: Re: Brakes

Michael,

I found a rubber plug that fits into the brake fluid reservoir (with the cap
off).  I drilled a hole in the rubber to fit my compressor nozzle.  With the
compressor regulator set very low, I was able to blow some fluid from the
reservoir into the system .  I then tried to bleed the brakes at each wheel
in the normal fashion.

The good news is that I now have some pedal pressure.  The bad news is that
the pedal goes close to the floor before it starts to feel solid.  I double
checked the master cylinder push-rod and it is adjusted to go all the way
out when the brake pedal is released.  Any further ideas?  It seem to me
that air is still in the lines.  Any clever ideas on getting it out?

Thanks again for your help.
Ben
BN1

----- Original Message ----- 
From: "Michael Salter" <michaelsalter@rogers.com>
To: "'Ben Prince'" <blprince2@comcast.net>; "'Healeys'"
<healeys@Autox.Team.Net>
Sent: Saturday, January 15, 2005 1:11 PM
Subject: RE: Brakes


> Hi Ben,
> One thing which can cause the problem that you have encountered is a lack
of
> free play in the master cylinder push rod.
> When the master cylinder is assembled and installed correctly if you fill
> the reservoir with fluid, and open all or any bleed screws, fluid should
> eventually start to dribble out of the open bleed screw. This is one of
the
> best ways to bleed brakes, if you have the time, because it completely
> eliminates aeration of the fluid.
> Check that push rod. If you do not have clearance and you do eventually
> manage to bleed the system somehow the brakes will eventually lock on as a
> result of fluid expansion.
>
> Michael Salter
> www.precisionsportscar.com
>
>
> -----Original Message-----
> From: owner-healeys@Autox.Team.Net [mailto:owner-healeys@Autox.Team.Net]
On
> Behalf Of Ben Prince
> Sent: Saturday, January 15, 2005 4:43 PM
> To: Healeys
> Subject: Brakes
>
> I just replaced the wheel cylinders and brake hoses on my BN1.  I also
> rebuilt
> the master cylinder.
>
> With everything reassembled, I can't get any fluid into the system.  I
have
> pumped on the pedal with a bleed plug loose, but to no avail.  I hooked up
a
> suction device at a wheel cylinder and created 20 psi vacuum, but it
doesn't
> draw any fluid either.
>
> Perhaps I screwed up the master cylinder rebuild, but I don't think so.  I
> did, however, neglect to bench bled the master cylinder before I installed
> it,
> but it seems that would not be insurmountable.   Any suggestions on how to
> get
> fluid into the system and bleed it?  Is there a cap adapter so one can
> pressurize the fluid reservoir?
>
> Many thanks,
> Ben
> 54 BN1




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