either a seal is damaged, a brake line broke or you did not use the correct tools to take it apart. Buy a car repair manual for the correct procedure..
No
Check the brake fluid...
Check your owner's manual, but newer cars can also illuminate the brake light if the fluid in the master brake cylinder is too low. This may have happened if the brakes were bled but not filled, or if the caliper was pushed back in, but fluid was lost in overflow, etc.
After the brakes are put together and you've bled the lines, just wash everything down with water to get rid of any brake fluid that you couldn't wipe up.
Your brake fluid is how the brake system converts mechanical force of your foot on the brake pedal, into hydraulic force that applies your brakes. Without fluid, your hydraulic brakes will not function.
Did you check the vacuum hose or did you refill the brake fluid?
In the brakes.
Hi. If the brakes are sticking on it won't be the servo thats at fault it's sound more like the calipers need cleaning.
Brake Fluid.
Check the brake fluid reservoir, it may be low on brake fluid indicating it is time to have the brakes inspected.
You can find information on changing your brake fluid yourself is to go online and look up under the information for changing brake fluid. You can also speak with a mechanic.
you have to unbolt the caliper off the rotor, but not from the brake fluid line.