Isuzu Ascender 2003-05

Brake Disc (Rotor)

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Removal & Installation



  1. Raise the vehicle.
  2.  
  3. Remove the tire and wheel assembly.
  4.  
  5. Compress the front brake caliper piston.
    1. Install a large C-clamp over the top of the brake caliper housing and against the back of the outboard brake pad.
    2.  
    3. Slowly tighten the C-clamp until the piston pushes into the brake caliper enough to slide the brake caliper off the rotor.
    4.  
    5. Remove the C-clamp from the brake caliper.
    6.  

  6.  
  7. Remove the rear brake caliper and mounting bracket.

    Click image to see an enlarged view

    Fig. Caliper mounting bracket removal

  8.  
  9. Remove rear brake rotor.
  10.  
  11. If the brake rotor is stuck, perform the following.
    1. Spray rotor and hub with penetrating oil.
    2.  
    3. Insert Slide hammer between the rotor friction surfaces in the vent section of the rotor. DO NOT place on the rotor friction surface.
    4.  
    5. Using the slide hammer, release the rotor from the hub assembly.

      Click image to see an enlarged view

      Fig. Rotor and slide hammer

    6.  

  12.  
  13. Remove the brake rotor.
    NOTE
    Whenever the rotor has been separated from the axle flange, clean any rust or foreign material from the mating surface of the axle flange and brake rotor. Failure to do this may result in increased lateral runout of the rotor and brake pulsation.


    NOTE
    If the brake rotor is not going to be replaced but just removed from the front hub to be refinished, mark the brake rotor left or right and the relationship of the brake rotor and a wheel stud. In doing so, it will reduce the possibility of vibration in the brake system.

  14.  
  15. Clean the brake rotor to the rear axle flange contact area.
  16.  
  17. Refinish the rotor, or replace if necessary.
  18.  
  19. Inspect the park brake components. If any of the following conditions are found, replace the affected parts.

    Bent or broken hold down spring
     
    Broken, cracked, or worn brake shoe lining
     
    Bent or damaged brake shoe
     
    Worn, bent, or damaged backing plate
     

  20.  

To install:

  1. Clean the park brake shoes using denatured alcohol.
  2.  
  3. Dry the park shoes using non-lubricated, filtered air.
  4.  
  5. Lubricate the contact area between the park brake shoe and the backing plate with high temperature silicone brake lubricant.
    NOTE
     It maybe necessary to readjust the park brake shoes to allow the brake rotor to be reinstalled.

  6.  
  7. Adjust the park brake.
  8.  
  9. Install the brake rotor by slowly turning the rotor while pushing the rotor on the axle flange.

    Click image to see an enlarged view

    Fig. Rear brake rotor installation

  10.  
  11. Install the rear brake caliper and mounting bracket.
  12.  
  13. Install the tire and wheel assembly.
  14.  
  15. Lower the vehicle.
  16.  
  17. Refill the brake master cylinder reservoir, if needed.
  18.  
  19. Pump the brake pedal slowly and firmly in order to seat the brake pads.
  20.  
  21. Burnish replaced or refinished rotors.
  22.  

 
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