[Healeys] BN1 brake system

[Bob Spidell]

... but don't torque the snot out of the bleeder; I've seen bleeder 
holes where the seat of the bleeder 'needle' has been cracked due to 
excessive force, making the cylinder junk.


On 8/31/2022 1:00 AM, Simon Lachlan via Healeys wrote:
>
> Yes, for sure, an Eezibleeder helps. Keep the air pressure down, maybe 
> a bit less than suggested in the destructions.
>
> Otherwise, see this, below, from one of my manuals. (Curiously, not in 
> all of them).
>
> ““Ifthebleedingofanycylindercontinueswithoutsuccessforaconsiderabletime,itispossiblethatairisbeingdrawninpastthebleederscrewthreads.Insuchcasestightenthebleederscrewattheendofeachdownwardstroke*ofthepedalandallowthepedaltoreturnfullybeforere-openingit.Closethebleederscrewfinallyduringthelastpedalapplication.”
>
> *ie to prevent air being drawn in during the upward passage of the 
> pedal. (SDL 14/08/2019)”
>
> I suppose that, the brakes being old, the threads get worn and let air 
> back in as the pedal goes back up. So, I tighten the bleeder as the 
> fluid is still coming out, ie before the downward stroke is finished. 
> Slows the process up somewhat and tries the patience of ones wifely 
> assistant.
>
> Good luck anyhow.
>
> Simon
>
> *From:*Healeys <healeys-bounces at autox.team.net> *On Behalf Of *David 
> Leong via Healeys
> *Sent:* 31 August 2022 06:19
> *To:* 'Healey List (healeys at autox.team.net)' <healeys at autox.team.net>
> *Subject:* Re: [Healeys] BN1 brake system
>
> Use a power pressure bleeder (I have a Motive Bleeder) and tap on the 
> slaves to loosen any air bubbles. Make sure there are no high spots 
> where air can get trapped and not be purged out of the bleeder screw
>
> */Dave/*
>
> *From:*Healeys <healeys-bounces at autox.team.net> *On Behalf Of 
> *warthodson--- via Healeys
> *Sent:* Tuesday, August 30, 2022 5:27 PM
> *To:* healeys at autox.team.net
> *Subject:* [Healeys] BN1 brake system
>
> We have been trying for several months to bleed the brakes on RHD BN1, 
> to no avail. The car has been professionally restored & appears to be 
> in excellent condition. Today, we tried again to bleed the system 
> following the shop manual. I.E. backing off the adjusters on the front 
> & back & bleeding & then readjusting the brakes. The results were the 
> same. There seems to be an excessively large amount of pedal travel 
> before the brakes are engaged & when engaged they feel "spongy". We 
> have access to 2 other 100's for reference. Any help would be greatly 
> appreciated. Also, we are not clear on the adjustment of the free play 
> of the master cylinder.
>
> Gary Hodson
>
>
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