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.

      Click image to see an enlarged view

      Fig. Compressing the front brake caliper

    6.  

  6.  
  7. Remove the mounting bolts from the brake caliper mounting bracket.
    NOTE
    When performing the following service procedure, the front brake caliper assembly and the front brake caliper mounting bracket can be removed as an assembly.



    Click image to see an enlarged view

    Fig. Caliper mounting bolt removal

  8.  
  9. Remove the brake caliper and mounting bracket assembly.
  10.  
  11. Remove the front brake rotor from the wheel hub.
    NOTE
    Whenever the brake rotor has been separated from the wheel bearing flange, clean any rust or foreign material from the mating surface of the rotor and flange. Failure to do this may result in increased lateral runout of the rotor and brake pulsation. If the brake rotor is not going to be replaced but just removed from the front hub, mark the relationship of the brake rotor and a wheel stud.



    Click image to see an enlarged view

    Fig. Rotor removal from wheel hub

  12.  
  13. Clean the brake rotor contact area on the front hub.
  14.  

To install:

  1. Install the brake rotor to the wheel hub.
  2.  
  3. Install the brake caliper assembly to the steering knuckle.
  4.  
  5. Install the brake caliper mounting bolt.
  6.  
  7. Tighten the brake caliper bracket mounting bolt to 110 ft. lbs. (150 Nm).
  8.  
  9. Install the tire and wheel assembly.
  10.  
  11. Lower the vehicle.
  12.  
  13. Fill the brake master cylinder to the proper level.
  14.  
  15. Pump the brake pedal slowly and firmly in order to seat the brake pads.
  16.  
  17. Burnish the replaced or refinished rotors.
  18.  

 
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