[Healeys] BJ8 Rear Brake

[Bob Spidell]

I don't. Have you looked for any kinks or sharp bends in the hard line 
(not likely to change, but we're grasping here)? Possibly, some 
contaminant got into the line, which can be overcome with pressure but 
might prevent withdrawal of the piston.

BTW, from your description, your rear shoes probably have at least 20K 
miles of material left. I've never had to change shoes in my Healeys due 
to wear; usually it's because of leaks (you cannot completely remove 
brake or differential fluid from shoes once they've been soaked).

bs


On 7/6/2021 8:34 AM, Healey wrote:
> Hi Bob,
>
>  No, I didn't pull the new wheel cylinder apart before install (never 
> heard of that one before). The bleeding went fine, and the piston 
> obviously moves out ok - it's just the lack of retracting that is the 
> problem.
>  So to confirm, noone thinks it's the hose (b/c the passenger side 
> works fine), correct?
>
> Thanks in advance
>
> On Monday, July 5, 2021, Bob Spidell <bspidell at comcast.net 
> <mailto:bspidell at comcast.net>> wrote:
>
>     Did you disassemble and lubricate the seals on the cyls before
>     install? I just replaced several on my BN2, and forgot to, but
>     when I checked they seemed to have some fluid in them, so may not
>     be an issue. I'd pull the recalcitrant cylinder and see if there's
>     anything wrong, the retract springs are pretty strong so the
>     cylinder would have to really be stuck. FWIW, I've installed
>     several of the 'cheapies' and not had an issue, and Tom Monaco
>     told me they're fine.
>
>
>     On 7/5/2021 3:37 PM, Healey wrote:
>
>          I had to replace a leaking, original wheel cylinder (drivers
>         side) earlier. Everything went fine with the install &
>         adjustment, except that on its inaugural run, it became
>         quickly apparent that things were not right.
>          Took the drum back off again, only to find that the
>         cylinder was not retracting properly.
>           Group wisdom from the internet says you need to replace the
>         rubber pipe.No problem - except there is only 1 of these
>         rubber brake pipes that goes into a T to feed both rear brakes
>         - and the problem is ONLY with the driver's brake - the
>         passenger side rear wheel cylinder retracts like a champ.
>         Driver's side spring is ok btw.
>          So what I don't understand is - if the inside of the rubber
>         pipe was swollen, not letting fluid back through, wouldn't
>         this affect both rear brakes, not just one of them?
>
>           Should I replace this one hose, or did I get a "bad" wheel
>         cylinder from Moss? (yes, I ordered the cheaper aftermarket
>         cylinder @ $14 as opposed to the TRW brand cylinder @ $70), or
>         do I replace both? or?
>
>           Lastly, what is the min thickness of the rear shoes? Both
>         are evenly worn & about the same thickness as the metal
>         mounting plate underneath.
>
>           Thanks in advance,
>
>         Neil
>
>

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/healeys/attachments/20210706/273c6948/attachment.htm>