Each time you re-pack bearing you need to install the grease seals. After taking the drum or hub, apart use a new seal to assemble. Tap the seal with a hammer evenly.
lots, replace pads and shims, clean and pack wheel bearings with grease and replace grease seals, resurface/replace rotors
use new pads and shims, repack wheel bearings and replace grease seals, set factory bearing tension, and resurface/replace rotors.
Axel seals leaking grease on the brake shoes. Wheel cylinders leaking brake fluid. To much brake dust in the drums.
damaged grease seals; also overheating and thus melting grease, allowing it to leak past worn seals
make sure when you replace the pads, you repack the wheel bearings, replace the grease seals, set proper tension on the bearings, and resurface or replace the rotors
Many kinds of grease can be used for brake slide pins. They have to be heat and moisture resistant.
I would jack up the vehicle and support it with 4 good jack stands, remove all 4 wheels and disassemble all the brakes inspecting the pads/shoes, rotors/drums, calipers/wheel cylinders, all hold down hardware, brake hoses, brake lines, master cylinder, e-brake cables, e-brake shoes and grease seals, then make a list of the parts that are to be replaced. Without doing this you won't know what you need and don't need to buy.
if the bearings in the front are a one piece hub than the seals have blown.
As you press the brake pedal it pushes a rod inside the master cylinder that has seals on it which in turn forces brake fluid through the lines dowm to the wheels. This pushes out pistons in the calipers & wheel cylinders which have friction material attached to them (brake pads & brake shoes) against metal surfaces (rotors & drums) and slows the vehicle down. This is a very simpified explaination.
axel grease is very sticky and adheres to where you apply it. Keeps out water and seals out dirt.
leaking grease or cracks Looseness
leaking grease or cracks Looseness