Metro, Prizm 2000-2002

Brake Pads

Print

Removal & Installation




CAUTION
Dust and dirt accumulating on brake parts during normal use may contain asbestos fibers from production or aftermarket brake linings. Breathing excessive concentrations of asbestos fibers can cause serious bodily harm. Exercise care when servicing brake parts. Do not sand or grind brake lining unless equipment used is designed to contain the dust residue. Do not clean brake parts with compressed air or by dry brushing. Cleaning should be done by dampening the brake components with a fine mist of water, then wiping the brake components clean with a dampened cloth. Dispose of cloth and all residue containing asbestos fibers in an impermeable container with the appropriate label. Follow practices prescribed by the Occupational Safety and Health Administration (OSHA) and the Environmental Protection Agency (EPA) for the handling, processing, and disposing of dust or debris that may contain asbestos fibers.

  1. Before servicing the vehicle, refer to the precautions section.
  2.  
  3. Set the parking brake and block the rear wheels.
  4.  
  5. Siphon a sufficient quantity of brake fluid from the master cylinder reservoir to prevent the brake fluid from overflowing from the master cylinder when removing or installing the brake pads. This is necessary, as the piston must be forced into the cylinder bore to provide sufficient clearance to install the pads.
  6.  
  7. Remove the wheel, then reinstall 2 lug nuts finger tight to hold the disc in place.
  8.  
  9. Remove the 2 caliper mounting bolts and then remove the caliper from the mounting bracket. Position the caliper out of the way and support it with wire so it doesn't hang by the brake line.
  10.  
  11. Remove the brake pads, the wear indicators, the anti-squeal shims, the support plates and the anti squeal springs (if so equipped). Disassemble slowly and take note of how the parts fit together. This will save much time during reassembly.
  12.  
  13. Inspect the brake disc for scoring or gouging. Measure the disc for both thickness and run-out.
  14.  
  15. Inspect the pads for remaining thickness and condition. Any sign of uneven wear, cracking, heat checking or spotting is cause for replacement. Compare the wear of the inner pad to the outer pad. While they will not wear at exactly the same rate, the remaining thickness should be about the same on both pads. If one is heavily worn and the other is not, suspect either a binding caliper piston or dirty slides in the caliper mount.
  16.  
  17. Examine the 2 caliper retaining bolts and the slide bushings in which they run. Everything should be clean and dry. If cleaning is needed, use spray solvents and a clean cloth. Do not wire brush or sand the bolts. This will cause grooves in the metal which will trap more dirt. Check the condition of the rubber dust boots and replace them if damaged.

    Click image to see an enlarged view

    Fig. Front disc brake assembly



    Click image to see an enlarged view

    Fig. Removing caliper mounting bolts



    Click image to see an enlarged view

    Fig. Removing the caliper from the rotor



    Click image to see an enlarged view

    Fig. Removing the outside brake pad



    Click image to see an enlarged view

    Fig. Removing the inside brake pad



    Click image to see an enlarged view

    Fig. The inside brake pad is attached to the caliper piston with a spring clip



    Click image to see an enlarged view

    Fig. Inside pad is at top and outside pad is on bottom. Note wear indicator springs protruding from sides of outside pad



    Click image to see an enlarged view

    Fig. Removing the anti-squeal springs from the caliper wear indicators



    Click image to see an enlarged view

    Fig. Using a C-clamp to compress the caliper piston



    Click image to see an enlarged view

    Fig. Coat the caliper mounting bolts with anti-seize during installation

  18.  

To install:

  1. Install the pad support plates onto the mounting bracket.
  2.  
  3. Install new pad wear indicators onto each pad, making sure the arrow on the tab points in the direction of disc rotation.
  4.  
  5. Install new anti-squeal pads to the back of the pads.
  6.  
  7. Install the pads into the mounting bracket and install the anti-squeal springs.
  8.  
  9. Use a caliper compressor, or a C-clamp to slowly press the caliper piston back into the caliper. If the piston is frozen, or if the caliper is leaking hydraulic fluid, the caliper must be overhauled or replaced.
  10.  
  11. Install the caliper assembly to the mounting plate. Before installing the retaining bolts, apply a thin, even coating of anti-seize compound to the threads and slide surfaces. Don't use grease or spray lubricants; they will not hold up under the extreme temperatures generated by the brakes. Torque the bolts to specification.
  12.  
  13. Remove the 2 lugs holding the disc in place and install the wheel.
  14.  
  15. Check the level of the brake fluid in the master cylinder reservoir; it should be at least to the middle of the reservoir.
  16.  
  17. Depress the brake pedal several times and make sure that the movement feels normal. The first brake pedal application may result in a very "long" pedal due to the pistons being retracted. Always make several brake applications before starting the vehicle. Bleeding is not usually necessary after pad replacement.
  18.  
  19. Recheck the fluid level and add to the MAX line if necessary.
  20.  


CAUTION
Dust and dirt accumulating on brake parts during normal use may contain asbestos fibers from production or aftermarket brake linings. Breathing excessive concentrations of asbestos fibers can cause serious bodily harm. Exercise care when servicing brake parts. Do not sand or grind brake lining unless equipment used is designed to contain the dust residue. Do not clean brake parts with compressed air or by dry brushing. Cleaning should be done by dampening the brake components with a fine mist of water, then wiping the brake components clean with a dampened cloth. Dispose of cloth and all residue containing asbestos fibers in an impermeable container with the appropriate label. Follow practices prescribed by the Occupational Safety and Health Administration (OSHA) and the Environmental Protection Agency (EPA) for the handling, processing, and disposing of dust or debris that may contain asbestos fibers.

  1. Before servicing the vehicle, refer to the precautions section.
  2.  
  3. Siphon a sufficient quantity of brake fluid from the master cylinder reservoir to prevent the brake fluid overflowing from the master cylinder when removing or installing the brake pads. This is necessary, as the piston must be forced into the cylinder bore to provide sufficient clearance to install the pads.
  4.  
  5. Remove the wheel and tire assembly.
  6.  
  7. Install 2 lug nuts finger tight to hold the disc in place.
  8.  
  9. Remove the 2 caliper mounting bolts and then remove the caliper from the mounting bracket. Position the caliper out of the way and support it with wire so it doesn't hang by the brake line.
  10.  
  11. Remove the 2 brake pads, the 2 wear indicators, the 4 anti-squeal shims, the 4 support plates (anti-rattle springs) and the 2 anti squeal springs, if so equipped. Disassemble slowly and take note of how the parts fit together. This will save much time during reassembly.
  12.  
  13. Inspect the brake disc for scoring or gouging. Measure the disc for both thickness and run-out. Complete inspection procedures are given later in this section.
  14.  
  15. Inspect the pads for remaining thickness and condition. Any sign of uneven wear, cracking, heat checking or spotting is cause for replacement. Compare the wear of the inner pad to the outer pad. While they will not wear at exactly the same rate, the remaining thickness should be about the same on both pads. If one is heavily worn and the other is not, suspect either a binding caliper piston or dirty slides in the caliper mount.
  16.  
  17. Examine the 2 caliper retaining bolts and the slide bushings in which they run. Everything should be clean and dry. If cleaning is needed, use spray solvents and a clean cloth. Do not wire brush or sand the bolts. This will cause grooves in the metal which will trap more dirt. Check the condition of the rubber dust boots and replace them if damaged.
  18.  

To install:

  1. Install the 4 pad support plates (anti-rattle springs) onto the mounting bracket.
  2.  
  3. Install new pad wear indicators onto each pad, making sure the arrow on the tab points in the direction of disc rotation.
  4.  
  5. Install new anti-squeal pads to the back of the pads.
  6.  
  7. Install the pads into the mounting bracket and install the anti-squeal springs, if so equipped.
  8.  
  9. Use a caliper compressor, a C-clamp or large pair of pliers to slowly press the caliper piston back into the caliper. If the piston is frozen, or if the caliper is leaking hydraulic fluid, the caliper must be overhauled or replaced.
  10.  
  11. Install the caliper assembly to the mounting plate. Before installing the retaining bolts, apply a thin, even coating of anti-seize compound to the threads and slide surfaces. Don't use grease or spray lubricants; they will not hold up under the extreme temperatures generated by the brakes. Torque the bolts to 25 ft. lbs. (34 Nm).

    Click image to see an enlarged view

    Fig. You will need a short extension to remove the front caliper mounting bracket bolts



    Click image to see an enlarged view

    Fig. Carefully remove the caliper assembly from the rotor



    Click image to see an enlarged view

    Fig. Suspend the caliper assembly out of the way to avoid hanging from the hose



    Click image to see an enlarged view

    Fig. Removing the outer brake pad from the caliper assembly

  12.  
  13. Remove the 2 lugs holding the disc in place and install the wheel.
  14.  
  15. Check the level of the brake fluid in the master cylinder reservoir; it should be at least to the middle of the reservoir.

    Click image to see an enlarged view

    Fig. Removing the inner brake pad from the caliper assembly



    Click image to see an enlarged view

    Fig. Note the correct position support plates (anti-rattle springs)

  16.  
  17. Depress the brake pedal several times and make sure that the movement feels normal. The first brake pedal application may result in a very "long" pedal due to the pistons being retracted. Always make several brake applications before starting the vehicle. Bleeding is not usually necessary after pad replacement.
  18.  
  19. Recheck the fluid level and add to the "MAX" line if necessary.

    Click image to see an enlarged view

    Fig. Correct placement of the support plates (anti-rattle springs)



    Click image to see an enlarged view

    Fig. Make certain the brake wear indicators are correctly installed

  20.  

 
label.common.footer.alt.autozoneLogo