[T2] Rear brake problem, brakes lock when braking

david raistrick keen at icantclick.org
Fri Jan 11 09:13:00 PST 2019


oh - and the master could have a front problem.   does the pedal seem
long (without engine running, so no vacuum boost to trick you)?

On Fri, Jan 11, 2019 at 12:12 PM david raistrick <keen at icantclick.org> wrote:
>
> > By clicks you mean the hand brake? We adjusted the rear shoes correctly but no progress.
>
> clicks of the adjustment wheel at the brake (at least, that's how I
> generally set them - I run them tight, then back up a measured and
> equal number of clicks - where the spokes of the adjuster wheel cross
> the spring retainer - how many is based on feel and how much drag I
> feel.   front drums particularly lead one to this method, where it's
> super important to have them balanced side to side)
>
> if it were mine, I'd try backing out the adjustment a bit looser as a
> workaround.
>
> also:  you replaced the front pads.  did you do a bed-in procedure on
> them?   there can be a night and day difference in grip between a
> fresh set of pads and a set that's broken in (which the bed-in
> accelerates).
>
> beyond that - these are stock front calipers?  you've confirmed
> they're not hanging up on their slides (it's been a long time since I
> worked on a disk brake bay, but I'm 99% sure they're floating
> calipers)?   the slide pins and the pad backer edges and possibily the
> the frame all have sliding friction points that can be a source of
> binding.
>
> what about rear rubber lines?   when they've aged out, they swell in
> the middle - and they basically hold brake pressure against the cyl
> for a whole.   (usually you notice it as a loss of brakes due to over
> heating, but could also lead to earlier lockup)


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