[Healeys] BJ8 Brakes

[Andy Thorp]

If these are the calipers in question then the reason for the problem is kind of obvious- there is no way of getting air out of one half as it has to flow downwards, then across the bottom pipe and up the other side. Any air stuck in the bores behind the pistons will stay trapped there. Reverse bleeding should clear it if the internal drillings are done sensibly.

https://www.ahspares.co.uk/product-images/fullsize/10a937bf-2288-4027-a5ec-2e753aadac6f-3.jpg

Andy.
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On Sun, 3/7/16, Simon Lachlan <simon.lachlan at homecall.co.uk> wrote:

 Subject: Re: [Healeys] BJ8 Brakes
 To: "'Healey List'" <healeys at autox.team.net>, "'Roger Grace'" <roggrace at telus.net>
 Received: Sunday, 3 July, 2016, 8:17 PM
 
Bleeding brakes can drive you
 crazy.See the attached, from my BMC
 manual. It addresses the question rather neatly, suggesting
 that air may be drawn in at the end of the downward push;
 for example, the threads on the bleeders may be slightly
 worn.The trick is to close the bleeder
 100% before the downward stroke ie, most important, while
 fluid is still coming out.A device such as A Gunson’s
 Eezibleed will mange that OK.The pdf’s first line may seem a
 little strange......it’s a note addressed to myself. The
 relevant paragraph is not in my pdf version of the manual
 for some reason so I added it as a reminder.Good luck,Simon