Hard Pedal

Requires extreme pressure to make brake function.

Can indicate power brake trouble, restricted hydraulic

lines, frozen callipers or wheel cylinders, or damaged

brake linings.


Low Pedal

Pedal nearly touches floorboard before brakes function.

May activate your brake warning light. Problems may

require a simple adjustment or indicate something much

more serious.
Pull

Car pulls to one side when brakes are applied. May be

an under inflated tire, misadjusted brakes or brakes

are in need of repair.


Drag

Sticking brakes, hot wheels or engine that seems to

have lost power. Brakes may be failing to release;

the condition can reverse itself, leaving you with no

brakes at all.


Squeal

Brakes should operate with a minimal amount of noise. Some noise is normal but excessive squeal, screech, grinding, groaning, chatter, clatter or bang means your brakes need attention.


Vibration

Brake pedal, steering wheel or entire vehicle shakes, vibrates or pulsates when brake is applied. May indicate need to resurface disc brake rotors - or signal a serious problem of a loose component or faulty steering mechanism.


Rotor machining

As any time you do work on the brake system, if you replace the brake pads, you need to have the rotors checked, machined and order to replace, if necessary we have machine shop services. what happens is you see the thickness of the rotor, as the rotor wears down from the friction being applied to it, it becomes narrower and narrower. And they have to maintain a minimal thickness in order for it to dissipate the heat that's built up from braking correctly and prevent the rotor from warping. Also, the piston and caliper assembly is designed to certain specifications. As the rotor wears out, the pads themselves have to go further and further together and closer together, that makes the piston come out further and further inside the caliper. It can only come out to a certain point before it doesn't have enough surface area to seal anymore or maintain its integrity from twisting. And that's the reason for the minimum thicknesses are, and if it's machine down beyond that or you neglect or don't take it in and have it machine and it wears down beyond that point, it can get to the point of safety where the piston and the caliper push it out so far to keep that contact that it can't stabilize itself in an emergency braking situation or in brake supply, the piston can bind and cause the brake system to lock up or fail or lose pressure. Either way, it's extremely hazardous and bad situation. And it's really important to keep the rotors within their serviceable tolerance levels. And each time you replace them and put your pads on, they're re-machined so they're perfectly smooth again and flat. Rotors and metals are actually a real porous surface, if you look at it magnified several times. The other thing that happen is the friction compounds used in brake pads are being embedded into the surface of the rotor and that causes a glazing action to occur, and it decreases the braking friction that can be applied between the brake pad and the rotor, and causes more heat and it reduces braking. So, that's why it's important for you to keep the rotors serviced when you do the pads.

© 2013 cdbatteries pty ltd.

  • google-plus-square
  • twitter-bird2-square
  • facebook-square