On Mon, 12 Feb 2018 22:12:43 -0800, ultred ragnusen
> wrote:

>Clare Snyder > wrote:
>
>> If the shoes are not adjusted properly and the hand brake cable pulls
>> the shoes out to where they belong (giving a decent pedal) the shoes
>> are not on their anchors (depends on the type of brake) and any
>> suspension movement CAN tighten the cable, initiating a brake
>> application.
>
>That must be it.
>
>Once the leading shoe touched the drum, the trailing shoe must have been
>forced to follow, causing the grabbing.
>
>It must have been happening all the time, but only noticeable at speed.
>
>Thanks for explaining.
>
>My big mistake was in thinking the parking brake adjusted the "final"
>position of the shoes.
On some it does - but then you need to manually adjust the handbrake
(e-brake) linkage AFTER the shoes have adjusted - and this
meansbacking off the e-brake adjustment first.

Youstill have not said what vehicle this is - and sincethere areSO
MANY differentsetups for brakes, this is important information.