clack on the drum

[billschroeder5842]

My '69 has four drum brakes. When I apply the brakes I get a "clack" when then engage. This is especially noticeable at low speeds when moving the car around a parking lot. The brakes seem to work fine, just "clack" when applied.

Any ideas?

[A383Wing]

sounds like they are either not adjusted right, (too loose), or you have "divots" in the backing plates where the shoes rest against

Bryan

[elacruze]

sounds like they are either not adjusted right, (too loose), or you have "divots" in the backing plates where the shoes rest against

Bryan

It's also possible but not likely that your backing plate mounting bolts are a bit loose.

[madmike]

Could also be the anchor pin/spring assy, that retains the shoes to the backing plate.  If the pin breaks (especially both), nothing holds the brake shoes to the backing plate.

[billschroeder5842]

Thanks-looks like I have a project this wekend!

[billschroeder5842]

**Update* Well I finally got around to taking the drum apart. What I found was a leaky wheel cylinder and a broken (!) adjustment spring. This would explain the squealing when the brake was applied and the clack.

O'Reillys had a wheel cylinder and spring in stock--16.00 for both.

I made the repair after work today and everything seemed in order.

[Musicman]

Good to hear that found the issue and got it taken care of. 

[A383Wing]

I hope you changed both rear wheel cylinders...if one was leaking, the other ain't far behind..and if it leaks, it will destroy yer new shoes you just put on

Bryan

[Steve P.]

Agreed.... Allllllways change brake parts evenly side to side... New will react better and faster than old and this can cause control issues as well....