[Healeys] Brake Lockup

Bob Spidell bspidell at comcast.net
Tue Aug 4 23:05:37 MDT 2020


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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