[Healeys] Soft Brakes

[Bob Haskell]

Price,

Some master cylinders have adjustable length rods.  I don't believe that 
they were originally fitted to the (big) Austin-Healeys.  The clevis pin 
and the holes in the clevis and pedal arm can wear creating slop, but 
you said that the brakes were fine before replacing the MC and 
rebuilding the servo.

Cheers,

Bob Haskell
AHCA 3000 Mk I registrar
http://www.ciahc.org/registry_3000mk1.php

On 03/06/2016 09:22 AM, Price Lindsay wrote:
> There is nothing in the Bently manual about adjusting the pedal. My pedal has about 1/2" of movement before it engages. The pedal is solid when I press it so I believe the system has been bled correctly.
>
> The feed back I receive when engaging the brakes when the car is in motion is that the servo is not assisting. I don't understand, as the servo was just rebuilt and it worked fine until I switched out the master cylinder.
>
> Price Lindsay
> 67 BJ8
>
>
> Sent from my iPhone
>
>> On Mar 6, 2016, at 3:39 AM, Oudesluys <coudesluijs at chello.nl> wrote:
>>
>> Hello Price,
>>
>> First make sure that the wheel brakes are properly adjusted.
>> When fitting a new master brake cylinder one usually has to adjust the rod between servo and cylinder, have a look at your workshop manual for the proper clearance which usually is around 0,3mm depending on make and type. To little clearance will lead to severely binding brakes, getting you stuck until the pressure can be released.
>> Also check that the system has been properly bled if the brake pedal feels spongy.
>> There is absolutely not anything like breaking in of cylinders or servo's. Only brake lining needs bedding in.
>>
>> Cheers,
>> Kees Oudesluijs
>>
>>
>> Op 6-3-2016 om 2:45 schreef Price Lindsay:
>>> Hi Kees -
>>>
>>> I have replaced my brake master cylinder and had the servo rebuilt. I took my BJ8 out for a short drive and the brakes felt "slow" to engage. When I stepped on the pedal hard they would stop fine. Prior to making the changes the brakes were great.
>>>
>>> Could the new master take time to break in?  There is an "in-out" adjustment on the petal, would an adjustment there make a difference?
>>>
>>> Thanks for your help, as always.
>>>
>>> Price Lindsay
>>> 67 BJ8
>>>
>>>
>>> Sent from my iPhone
>>
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