Question: What in the parking/emergency brake would cause a clatter on small bumps?
Background: I've had an annoying "clatter" from my rear end, very apparent when, for example, hitting even small bumps or potholes while driving close to a building (windows down). I've been underneath, checked everything out. As per one potential issue outlined in CD service manual - changed my shocks. Eventually put some rubber bungie cords temporarily on my exaust mounts to rule out the possibility that the exhuast is hitting a shield/body. I even took a microphone and put it on the rear fender and recorded the noise!
I once again consulted my service manual and noted that the emergency/parking brake has it's own drum and pads, and a notched wheel adjuster (just like in my 1955 Chevrolet BelAir!). I adjusted them tighter without positive result. I then however got the idea to drive the car down a local sloped backroad that has some small speedbumps.
I drove, listened and confirmed that the bumps were sufficient to cause the clatter. Then I redrove the route at the same speed (20mph/30kmh), but engaged the parking brake a few clicks, just enough to keep my speed down. Voila! - NO CLATTER.
This isolation is as far as I've gotten, and I believe I've finally isolated it. I'll remove the brake disk and take a look at the next sunny-day-off oportunity. Without having yet been inside the emergency/parking brake region of my car....... Any thougths out there on what I should be looking for? Scotz
Background: I've had an annoying "clatter" from my rear end, very apparent when, for example, hitting even small bumps or potholes while driving close to a building (windows down). I've been underneath, checked everything out. As per one potential issue outlined in CD service manual - changed my shocks. Eventually put some rubber bungie cords temporarily on my exaust mounts to rule out the possibility that the exhuast is hitting a shield/body. I even took a microphone and put it on the rear fender and recorded the noise!
I once again consulted my service manual and noted that the emergency/parking brake has it's own drum and pads, and a notched wheel adjuster (just like in my 1955 Chevrolet BelAir!). I adjusted them tighter without positive result. I then however got the idea to drive the car down a local sloped backroad that has some small speedbumps.
I drove, listened and confirmed that the bumps were sufficient to cause the clatter. Then I redrove the route at the same speed (20mph/30kmh), but engaged the parking brake a few clicks, just enough to keep my speed down. Voila! - NO CLATTER.
This isolation is as far as I've gotten, and I believe I've finally isolated it. I'll remove the brake disk and take a look at the next sunny-day-off oportunity. Without having yet been inside the emergency/parking brake region of my car....... Any thougths out there on what I should be looking for? Scotz