Drum brakes have been used on cars since the beginning and are still widely used on a various make and models.
So here are a couple of things to look for when your brakes are acting up.
First thing the customer noticed was that the emergency brake was not engaging with the lever fully pressed.
It was obvious that the emergency brake cable was not adjusted in a long time.
Be sure to clean up the threads before the anything else.
With the drums off, clean up and debris and brake dust -USE A DUST MASK and GLOVES.
Brake dust is one of the many things you want to keep out of your lungs!!
Visually inspect for Broken Springs, Leaking Wheel Cylinders, Excessive Grease, Loose Hardware.
From the looks of the Brake Shoes, I could tell the full surface of the shoe was not making contact with the inner drum surface. Which will wear out the brakes faster than usual and cause noisy or jittery braking.
Looks like this shoe was jumping around in the drum.
The surface should be smooth and evenly worn from top to bottom. Unlike this!!
The Drums are still nice and smooth, and since this is only an inspection and nothing was broken I used some 400 grit sandpaper and just gave the drums a quick wipe. No cracks or visual irregularities were visible.
The use of a Micrometer is requited to check brake drum tolerances. If the drum walls are beyond limits
DO NOT REUSE THE DRUM!
Good practice is to re-grease inner and outer bearings. Don’t forget the dust cap, not pictured here.
HAPPY MOTORING and SAFE DRIVING!