[Roadsters] Brake question

[Dan Kroninger]

I did apply disc brake quiet the the backs of the pads and that did help a
bit, but did not resolve completely.

Sent from my iPhone

On May 20, 2013, at 2:14 PM, "Jerry Krakauer" <jsk977 at optonline.net> wrote:

>
> Actually, while I don't have a lot of knowledge of newer floating calipers,
> on older designed fixed calipers the pads are always lightly rubbing on the
> rotors, they do not retract. This wiping action is one of the reasons for
> improved wet braking compared to drums. Identifying the cause of squeal is
> one of those things that can drive you nuts. It may be caused by
sympathetic
> vibrations between the pad material and rotors. If that's the case you may
> want to try anti-squeal compound on the backs of the pads. Or, you may want
> to try an aggressive bed in procedure. On and off chirping can also
indicate
> disc run-out (many call it warping these days) Use a dial indicator to see
> if the rotors are true. If not, they can be cut if still within tolerance.
>
> Also, these Dunlop calipers have no guide pins, Pins are used on floating
> calipers, and yes the pads are the same as the series 1 XKE.
>
> Jerry Krakauer
> SRL311 00099
>
> -----Original Message-----
> From: datsun-roadsters-bounces at autox.team.net
> [mailto:datsun-roadsters-bounces at autox.team.net] On Behalf Of Dan Kroninger
> Sent: Monday, May 20, 2013 1:29 PM
> To: Datsun Mailing List
> Subject: [Roadsters] Brake question
>
> All,
>
> I have an issue with my brakes that I have had since I bought the car.  On
> shorter drives, I have no issues, but when I drive for more than an hour I
> get this squeak from the brakes.  It sounds like a squealer on modern disc
> brakes to alert when the pads are getting low.  I get it on both front
> brakes but not all the time and not always at the same time.  Stepping on
> the brakes makes it go away for a while, but the it comes back.  Some times
> it is a chirp chirp chirp and other times its a constant squeal.
>
> So far, I have replaced the hoses with stainless steal, replaced the pads,
> rebuilt the calipers, and bled the brakes several times.  They are
correctly
> and fully adjusted.  Any thoughts as to the cause?  It seems like the
> calipers are not retracting completely, but I don't know why.  The problems
> seems worse on hot days, but happens in the cold too.
>
> The pads are a bit tight in the caliper.  should they be filed down on the
> edges?
>
> Thanks in advance for your knowledge.
>
> Dan
> Dairyland Datsuns
> 68 1600.
> ________________________________________