Brake CLACK!

[Mark_T]

Could it be related to your ebrake? Perhaps you could try backing off the adjustment so the pads are nowhere near contacting the drum and see if the noise goes away.

[shadrach74]

It's amazing how little it takes to make a racket with breaks. I went through a similar situation with my GS400 DD in the process of seeking out the clank, I discovered axial movement in my upper control arms. I removed the old and installed new ones. Imagine my surprise as I was backing out of the garage after completing that 5 hour job only to hear the dreaded clank. I did not have any movement in the caliper when I tried to move it by hand. But as I said, there is no way a man can replicate even light brake force without an implement. Anyway, I pulled a Tstone and just lived with it. This turned out to work well, because it got worse and worse to the point of clanking on rough roads. I thought I needed new struts, but I could not replicate the noise with up and down movement with the car stationary. Then I thought it was the sway bar bushings,but they turned out to be fine.... Once the symptoms were bad enough it was an easy to see the problem was in fact a caliper that was moving a few mm. Even then, it was not what I would call loose feeling until I really wrenced on it. Always use Loctite blue on caliper bolts.

[healthservices]

does it happen only after you change directions and the first initial brake application in that direction?

[stateofidleness]

Originally Posted by healthservices

does it happen only after you change directions and the first initial brake application in that direction?

mine does this! started after my first DIY brake pad change. everything went back in with ease and no "issues" were encountered, but if I go from Reverse to Drive, the very first time I brake (hard or soft, doesn't matter), it makes a noticeable "click" as if the pads are seating against the rotor or something. Any time after that there's no noise.

What causes this? I've been too lazy to check myself. My brake functionality doesn't appear to be affected at all. Still stops on a dime.

[stephe57]

What I've seen typically is there are brake pucks or adhesive disc called "damping shims" that are attached to your original pads. When you removed the pads they will sometimes stay in the caliper cup and more often then not they come out with the pads as they have an adhesive backing. These "pucks" do not allow the pads to shift back and forth in the caliper. Just a thought as I have performed many brake services and most recent being a 993 in which I remember them coming off rather hard.



-Ty

*Speed Yellow 986*

[DFW02S]

Originally Posted by stephe57

What I've seen typically is there are brake pucks or adhesive disc called "damping shims" that are attached to your original pads. When you removed the pads they will sometimes stay in the caliper cup and more often then not they come out with the pads as they have an adhesive backing. These "pucks" do not allow the pads to shift back and forth in the caliper. Just a thought ....

That's a really helpful post for your 1st or 2nd.
If they're all this good, you'll be a legend by post 100!

[stephe57]

Originally Posted by DFW02S

That's a really helpful post for your 1st or 2nd.
If they're all this good, you'll be a legend by post 100!

I dont know about that . But Im almost positive the noise your hearing is the brake pad shifting back and forth in the caliper, thus making the audible click when going from reverse to drive or drive to reverse. Check it out, see if those damping shims are in there if not, I'm going to be pulling my 986 into the shop today and ill take a look as I'm still on the original pads. If mine are there I'll take some pics.

-Ty

*Speed Yellow 986*

[RandallNeighbour]

Originally Posted by healthservices

does it happen only after you change directions and the first initial brake application in that direction?

Yup. I think so.

[healthservices]

Originally Posted by healthservices

does it happen only after you change directions and the first initial brake application in that direction?

Originally Posted by RandallNeighbour

Yup. I think so.

brake pad play, or play in the mount bolts for the caliper loose.

most likely brake pad play.

[jcb986]

Randall, it could be a motor mount problem, think about it.:ah:

[thstone]

Originally Posted by Mark_T

Could it be related to your ebrake? Perhaps you could try backing off the adjustment so the pads are nowhere near contacting the drum and see if the noise goes away.

Done that. No joy. Same noise.