[Healeys] Brake Lockup

Thu Aug 6 02:07:56 MDT 2020

Ah, well then it could be a bad brake hose.  I really prefer the modern
aeroquip to avoid this whole problem.

On Thu, Aug 6, 2020 at 11:28 AM Bob Spidell <bspidell at comcast.net> wrote:

> I think I bought SS pots when I rebuilt them, but it's been so long ago ...
>
> On 8/5/2020 8:04 PM, Alan Seigrist wrote:
>
> Hi Bob -
>
> If you have the original chrome plated Girling pots in there, little bits
> of corrosion can start, causing the pot to stick a little.  Worth taking
> the right caliper off (it's easy) and taking the pots out looking for
> rust.  If that's the case, easy fix, replace the pots with SS replacements
> and the seals, you'll never have a problem again.
>
> Best Regards,
>
> Alan
>
> On Thu, Aug 6, 2020 at 10:26 AM Bob Spidell <bspidell at comcast.net> wrote:
>
>> Flex lines are 'normal' rubber; but fairly new. I checked the hard line
>> today; no kinks (my memory was playing tricks again).
>>
>> It pulls down straight; looks like replacing the kinked RR hard line
>> might have helped (ya' think, Bob?). I'll pull the wheels and have a look
>> at pads and rotors; might be a while as I'm starting to think about harvest.
>>
>> Bob
>>
>>
>> On 8/5/2020 5:54 PM, Harold Manifold wrote:
>>
>> You should be able to judge if the callipers are apply even pressure to
>> the disk by the wear pattern on each side of the disk. If the wear is even
>> and the surfaces look very similar likely the pads are not seized. Don't
>> rule out air in the brake line. Are the flex hoses rubber or stainless
>> steel braid? You may have a flex hose that is expanding due to pressure in
>> the brake line.
>>
>> Harold
>>
>> ------------------------------
>> *From:* Healeys [mailto:healeys-bounces at autox.team.net
>> <healeys-bounces at autox.team.net>] *On Behalf Of *Bob Spidell
>> *Sent:* Wednesday, August 05, 2020 10:00 AM
>> *To:* Michael MacLean; Austin Healey
>> *Subject:* Re: [Healeys] Brake Lockup
>>
>> Your $0.02 is appreciated. Rotors and pads were replaced not too long
>> ago, but it's probably been 20 years since I rebuilt the calipers.
>>
>> Bob
>>
>> On 8/5/2020 9:27 AM, Michael MacLean wrote:
>>
>> Maybe the right caliper was fluid starved for so long that is froze in
>> place or at least is binding up for that reason.  If all the brake lines
>> are clear, the only thing left is the caliper.  Sounds like time for a
>> rebuild.  Just my two cents.
>> Mike MacLean
>> On Tuesday, August 4, 2020, 10:07:19 PM PDT, Bob Spidell
>> <bspidell at comcast.net> <bspidell at comcast.net> wrote:
>>
>>
>> Flex lines are only a couple years old, and the hard lines are fairly
>> fresh cupro-nickel. You got me thinking, though, the RF hard line may
>> have a slight kink (they're both coiled). I'll check it out.
>>
>> Bob
>>
>> On 8/4/2020 9:57 PM, sentenac.rw at gmail.com wrote:
>> > Bob, could there still be some debris in the right front brake line
>> > that keeps the right brake from being as effective as the left?  Or an
>> > internally frayed flex line to the right brake?
>> >
>> > -Roland
>> >
>> > On Tue, 4 Aug 2020 21:50:42 -0700, you wrote:
>> >
>> >> Thanks, Kees. The car's brakes are stock BJ8; i.e. single circuit. It
>> >> pulls down straight, but locks the front left only. I replaced pads and
>> >> rotors about 4 years/20K miles ago, and the old gear looked to be
>> pretty
>> >> evenly worn. The right rear line was the one that was pinched, and I
>> >> thought for sure that would cure the lock-up; it did pull before I
>> >> replaced the line, but I don't remember the direction (pull to the
>> right
>> >> would have been expected, I think).
>> >>
>> >> I'll take a look at the pads and rotors when I get a chance.
>> >>
>> >>
>> >> On 8/4/2020 9:18 PM, Kees Oudesluijs wrote:
>> >>> Sounds like one of the calipers is (partly) seized. The car is
>> >>> probably pulling to one side as well under normal braking. An overhaul
>> >>> of the calipers and new pads would probably sort it. Also check the
>> >>> discs.
>> >>>
>> >>> If you have a dual brake circuit fitted which is split in circuits
>> >>> with one front and the opposite rear brake, check the Pressure
>> >>> Differential Valve or Pressure Differential Warning Actuator (PDWA).
>> >>> The plunjer should be central but can get dislodged after leakage or
>> >>> bleeding the brakes.
>> >>>
>> >>> But first check the tyre pressures.
>> >>>
>> >>>
>> >>> Kees Oudesluijs
>> >>>
>> >>>
>> >>>
>> >>> Op 5-8-2020 om 05:00 schreef Bob Spidell:
>> >>>> Listers,
>> >>>>
>> >>>> Today I replaced a section of brake line on my BJ8 that I'd squashed
>> >>>> with a jackstand. The operation was a success, and I got good pedal
>> >>>> after bleeding, but when I stomped on the brakes only the front left
>> >>>> locked-up. This has been the case as long as I can remember, but as I
>> >>>> don't usually need to lock them up it hasn't bothered me. But, now
>> >>>> I'm wondering 'why?' There's no adjustment on disk brakes, obviously,
>> >>>> so why would one squeeze harder than the other?
>> >>>>
>> >>>> Bob
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