Clunk and drop in Brake pedal (1 Viewer)

[LandoNick]

Randomly I will press on the brake pedal then with a bit more pressure it make a clunk sound and the pedal goes a little further to the floor. Still have really good brakes. Pedal be catching on something or the brake booster or Master cylinder? Doesn't seem hydraulic but maybe.

 

[OSS]

I’d carefully go through the three pages of troubleshooting tips in the Toyota Body manual Brake section to try to narrow down the possibilities.

 

[YooperCruiser]

There's been a couple times in at my shop where I've seen rear brake shoes ride up on a ridge in the drum, then when brakes are applied the shoes drop off the ridge and cause the pedal to drop. Not very common but I have seen it happen