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Re: [Healeys] Brake servo

To: healeys@autox.team.net
Subject: Re: [Healeys] Brake servo
From: healeyguy@aol.com
Date: Mon, 20 Jul 2009 14:42:39 -0400
Ge
Although the brake hoses may be bad they don't usually fail all at 
once. The Girling servo on the other hand will lock up the brakes 
quickly. I vote for a failing servo. My experience is that the vacuum 
piston sticks in the pressure on position due to fluid in the can and 
will release when the large spring overcomes the friction between the 
piston leather seal and the can bore. In really bad cases the piston 
does not release on its own and the hydraulic pressure in the line must 
be released by cracking a fitting open a bit in order to move the car. 
The servo will usually lock all four wheels if the rear shoes are in 
adjustment. A rebuild or replacement is in order.
Aloha
Perry


-----Original Message-----
From: Gaagten <gaagten@hetnet.nl>
To: Healey forum <healeys@autox.team.net>
Sent: Mon, Jul 20, 2009 6:16 am
Subject: [Healeys] Brake servo



Hello,
Yesterday I intended to go for a ride. Taking the car out of the garage 
I
noticed a strange behavour of my brakes.
The pedal felt very hard and not too much breaking was there. I just 
drove
some blocks and nothing was chanced. Pushing the brake pedal several 
times
resulted in blocking of the front brakes and the car could not be moved
anymore).
However after a little time the brakes released themselves again.
My conclusion is that something is wrong with the brake servo. The 
servo is on
the car as long as I have it (almost 15 years, about 20.000 km)
So, if I have to replace the unit, which servo type should I take. I 
have
probably a girling now. I know that the substitute for this is a Lockeed
servo.

Any other idea

Thanks and regards,
Ge Aagten
BJ8
The Netherlands
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