AutoZone 2009 GMC Truck Envoy Denali 4WD 5.3L SFI OHV 8cyl | Repair Guides | Brakes | Disc Brakes | Brake Pads | AutoZone.com

Search suggestions

    My Vehicles

    2009 GMC Truck Envoy Denali 4WD 5.3L SFI OHV 8cyl

    My Store

    2903 LEE BLVD
    (239) 368-4900

    CLOSED Open at 7:30 AM

    Save 20% Sitewide

    Use Code: YOUCHOOSE20

    See Details

    Get A $25 Gift Card

    Use Code: YOUCHOOSE25

    See Details

    Ford Mustang 1994-1998 Repair Guide

    Brake Pads

    Print

    REMOVAL & INSTALLATION




    CAUTION
    Older brake pads may contain asbestos, which has been determined to be a cancer-causing agent. Never clean brake surfaces with compressed air. Avoid inhaling any dust from any brake surface. When cleaning brake surfaces, use a commercially available brake cleaning fluid. Also, always replace the brake pads on both front wheels at the same time.

    Front

    The Mustang Cobra model utilizes dual piston front calipers, whereas all other models covered by this guide utilize single piston front brake calipers.

    EXCEPT COBRA MODEL

    See Figures 1 through 10

    1. Remove and discard half of the brake fluid in the master cylinder reservoir.
    2.  
    3. Raise and safely support the vehicle. Remove the front wheel(s).
    4.  

    To replace the brake pads, it is not necessary to disconnect the brake fluid hose from the caliper. If the hose is detached from the caliper, the brake system will need to be bled.

    1. Remove the brake caliper anchor plate mounting bolts, then, using a pivoting motion, lift the caliper and anchor plate away from the disc brake rotor.
    2.  



    Click image to see an enlarged view

    Fig. Fig. 1: Always replace all four front brake caliper pads at the same time-do not replace the brake pads on one wheel only, as this practice can lead to uneven and dangerous braking conditions



    Click image to see an enlarged view

    Fig. Fig. 2: To replace the front disc pads, locate the caliper and anchor plate bolts (arrows) ...



    Click image to see an enlarged view

    Fig. Fig. 3: ... then remove the two bolts



    Click image to see an enlarged view

    Fig. Fig. 4: Slide the caliper and anchor plate off of the rotor ...



    Click image to see an enlarged view

    Fig. Fig. 5: ... then suspend the caliper with strong cord or wire to prevent damaging the brake hose


    WARNING
    Do not let the caliper hang by the brake hose; otherwise, damage to the hose may occur, necessitating brake hose replacement.

    1. Suspend the caliper inside the fender housing with a length of wire or strong cord.
    2.  
    3. Remove the outer brake pad from the anchor plate by sliding the brake pad away from the outer leg.
    4.  
    5. Remove the inboard pad by separating the pad from the caliper piston and anchor plate, then remove the anti-rattle spring from the caliper. A small prytool may be necessary to remove the anti-rattle spring.
    6.  



    Click image to see an enlarged view

    Fig. Fig. 6: Remove the outboard brake pad ...



    Click image to see an enlarged view

    Fig. Fig. 7: ... then remove the inboard brake pad from the caliper



    Click image to see an enlarged view

    Fig. Fig. 8: Use a small prytool to pop one edge of the anti-rattle spring up ...



    Click image to see an enlarged view

    Fig. Fig. 9: ... then pull the spring off of the caliper

    To install:
    1. Inspect the brake rotor for scoring and wear; minor scoring or disc pad lining build-up does not require disc machining or replacement. If heavy scoring, cracks or other damage is evident, replace or have the rotor machined, as necessary.
    2.  
    3. Glaze on the rotor can be removed by hand-sanding it with medium grit garnet paper or aluminum oxide sandpaper.
    4.  
    5. While the brake pads are removed, it is a good time to inspect the caliper piston boot and caliper pin boots for damage, such as tearing. Replace the boots if any damage is evident.
    6.  
    7. Use a 4 in. (10cm) C-clamp and a small block of wood to press the caliper piston back into its bore until it is fully seated. This must be done to provide adequate assembly clearance, since the new brake pads will be thicker than the old ones that were removed.
    8.  



    Click image to see an enlarged view

    Fig. Fig. 10: Use a 4 in. C-clamp and a small block of wood to seat the caliper's piston prior to NEW pad installation

    The brake caliper is designed to have the anti-rattle spring installed in one orientation only. The right-hand and left-hand springs are identical, but installed in opposite directions. The spring should be installed from the disc brake pad side.

    1. Thoroughly clean all dirt and other residue from the disc caliper, especially from the brake pad lining abutments. Install the anti-rattle clip and the hold-down spring.
    2.  
    3. Peel the protective paper from the backside of the disc brake pad. Do not allow the sticky backside of the brake pad to become contaminated with dirt.
    4.  
    5. Install the inboard and outboard brake pads into the brake caliper and anchor plate. Be sure that the brake pad anti-rattle springs are fully engaged in the caliper assembly.
    6.  
    7. Install the caliper onto the disc brake rotor, then install the anchor mounting bolts to 95 ft. lbs. (130 Nm).
    8.  


    WARNING
    Failure to tighten the lug nuts in a star pattern may result in high rotor run-out, which speeds up the onset of rotor roughness, shudder and vibration.

    1. Install the wheel and lug nuts. Have an assistant depress the brake pedal, while you tighten the lug nuts in a star pattern to 85-105 ft. lbs. (115-142 Nm).
    2.  
    3. Lower the vehicle.
    4.  
    5. Pump the brake pedal prior to moving the vehicle to seat the brake pads. Refill the master cylinder.
    6.  

    COBRA MODEL
    1. Remove and discard half of the brake fluid in the master cylinder reservoir.
    2.  
    3. Raise and safely support the vehicle. Remove the front wheel(s).
    4.  

    To replace the brake pads, it is not necessary to disconnect the brake fluid hose from the caliper. If the hose is detached from the caliper, the brake system will need to be bled.

    1. Remove the retaining clip, washer and caliper mounting pin, then separate the caliper from the anchor plate and disc brake rotor.
    2.  


    WARNING
    Do not let the caliper hang by the brake hose; otherwise, damage to the hose may occur, necessitating brake hose replacement.

    1. Suspend the caliper inside the fender housing with a length of wire or strong cord.
    2.  

    Mark the removed brake pads as right or left to aid in identifying replacement parts.

    1. Remove both brake pads from the caliper.
    2.  

    To install:
    1. Thoroughly clean all dirt and other residue from the disc brake caliper and anchor plate, especially from the brake pad lining abutments.
    2.  
    3. Inspect the brake rotor for scoring and wear; minor scoring or disc pad lining build-up does not require disc machining or replacement. If heavy scoring, cracks or other damage is evident, replace or have the rotor machined, as necessary.
    4.  
    5. Glaze on the rotor can be removed by hand-sanding it with medium grit garnet paper or aluminum oxide sandpaper.
    6.  
    7. While the brake pads are removed, it is a good time to inspect the caliper piston boot and caliper pin boots for damage, such as tearing. Replace the boots if any damage is evident.
    8.  

    There are four different brake pads included with the new brake pad kit. The outboard brake pads, equipped with the insulating backing, are installed in the caliper housing, whereas the two inboard pads are installed in the caliper's pistons. Differently positioned retaining springs prevent the inboard pads from being installed in the outboard positions and vice versa. Use the removed brake pads for reference when installing the new pads.

    1. Peel the protective paper from the backside of the disc brake pad. Do not allow the sticky backside of the brake pad to become contaminated with dirt.
    2.  
    3. Install the inboard and outboard brake pads. Press the outboard pads against the caliper housing, and the inboard pads against the caliper pistons, until they are fully seated.
    4.  
    5. Install the caliper onto the disc brake rotor and anchor plate, ensuring that the guiding surfaces of the brake pad and anchor plate are seating correctly.
    6.  
    7. Install the disc brake caliper locating pin by depressing the front disc brake caliper, to compress the bias spring, and sliding the locating pin into position. Secure the locating pin with the washer and retaining clip.
    8.  


    WARNING
    Failure to tighten the lug nuts in a star pattern may result in high rotor run-out, which speeds up the onset of rotor roughness, shudder and vibration.

    1. Install the wheel and lug nuts. Have an assistant depress the brake pedal, while you tighten the lug nuts in a star pattern to 85-105 ft. lbs. (115-142 Nm).
    2.  
    3. Lower the vehicle.
    4.  
    5. Pump the brake pedal prior to moving the vehicle to seat the brake pads. Refill the master cylinder, if necessary.
    6.  

    Rear

    See Figures 11 through 21

    To seat the piston in the caliper for brake pad installation, a specific tool (Ford Tool T87P-2588-A or equivalent) is necessary.

    1. Remove and discard half of the brake fluid in the master cylinder reservoir.
    2.  
    3. Loosen the rear wheel lug nuts 1 / 2 turn to break them loose.
    4.  
    5. Block the front wheels, then raise and safely support the rear of the vehicle on jackstands.
    6.  
    7. Remove the wheel.
    8.  



    Click image to see an enlarged view

    Fig. Fig. 11: Do not fully remove the rear brake caliper for pad replacement-simply remove the top locating pin and pivot the caliper out and away from the rotor

    1. Separate the brake hose mounting bracket from the shock absorber bracket by removing the retaining screw.
    2.  
    3. Detach the parking brake cable and conduit from the rear brake calipers, as follows:
      1. Use a pair of needlenose pliers to pull the retaining E-clip off of the end of the parking brake cable conduit.
      2.  

    4.  



    Click image to see an enlarged view

    Fig. Fig. 12: To detach the cable from the rear caliper, first remove the conduit retaining E-clip ...



    Click image to see an enlarged view

    Fig. Fig. 13: ... then compress the cable lever and grasp the cable end using pliers



    Click image to see an enlarged view

    Fig. Fig. 14: Manipulate the cable end (A) to disengage it from the brake lever (B)



    Click image to see an enlarged view

    Fig. Fig. 15: ... then withdraw the cable and conduit from the brake cable mounting boss (arrow)

      1. Using a large pair of pliers, or an equivalent tool, compress the parking brake cable lever, then, using a second pair of pliers, pull the cable out as far as possible. With the cable extended as far as possible, disengage the cable from the lever.
      2.  
      3. Once the cable is free of the lever, release it. Then, withdraw the cable and conduit from the caliper mounting boss.
      4.  


    1. Hold the caliper locating pin hex head with an open-end wrench, then remove the upper pin retainer.
    2.  
    3. Pivot the caliper down and away from the rotor.
    4.  
    5. Remove the inner and outer brake pads and anti-rattle clips from the support bracket.
    6.  



    Click image to see an enlarged view

    Fig. Fig. 16: Remove the top locating pin, then pivot the caliper down and out from the rotor



    Click image to see an enlarged view

    Fig. Fig. 17: If so desired, the entire caliper can be removed from the rotor for pad replacement



    Click image to see an enlarged view

    Fig. Fig. 18: Suspend the caliper with wire or strong cord (arrow) while removing and installing the brake pads



    Click image to see an enlarged view

    Fig. Fig. 19: Remove the outboard brake pad ...



    Click image to see an enlarged view

    Fig. Fig. 20: ... then the inboard pad from the support bracket

    To install:

    Ensure that one of the two indentations on the caliper piston face is situated so that it will engage the nib on the brake pad when installed.

    1. Use a caliper piston adjuster tool (Ford Tool T87P-2588-A or equivalent) to turn the piston clockwise until it is fully seated.
    2.  


    WARNING
    NEVER attempt to seat the rear brake caliper piston by using a C-clamp, as with the front calipers-the rear calipers are not designed to be seated in this manner and you WILL ruin the caliper. Also, do not try to use needlenose pliers (or another incorrect tool) to turn the piston and seat it; the piston surface, indentations, and dust boots can be easily damaged.



    Click image to see an enlarged view

    Fig. Fig. 21: A brake caliper adjuster tool must be used to seat the rear caliper piston-never substitute another tool, such as a C-clamp or needlenose pliers, to seat the piston

    1. Install the anti-rattle clips and brake pads on the caliper.
    2.  
    3. Pivot the caliper up and onto the rotor. Ensure that the brake pads and anti-rattle clips are properly positioned once the caliper is installed.
    4.  
    5. Apply a threadlocking compound, such as Ford Threadlock and Sealer E0AZ-3554-AA, to the upper locating pin threads. Install the locating pin retainer and tighten it to 23-26 ft. lbs. (31-35 Nm) while holding the locating pins with an open-end wrench.
    6.  
    7. Connect the parking brake cable and conduit to the rear brake caliper as follows:
      1. Insert the cable and conduit through the rear caliper mounting boss until the stop on the conduit contacts the mounting boss.
      2.  
      3. Using a pair of needlenose pliers, install a new E-clip onto the cable conduit, ensuring that the clip is properly seated in the conduit retaining groove.
      4.  
      5. Use the large pair of pliers to compress the parking brake cable lever, then grasp the end of the cable with a second pair of pliers.
      6.  
      7. Manipulate the cable so that it is engaged by the cable lever, then release the cable.
      8.  
      9. Slowly release the brake cable lever until it rests against the parking brake cable end stop.
      10.  

    8.  


    WARNING
    Failure to tighten the lug nuts in a star pattern may result in high rotor run-out, which speeds up the onset of rotor roughness, shudder and vibration.

    1. Install the wheel and lug nuts. Have an assistant depress the brake pedal, while you tighten the lug nuts in a star pattern to 85-105 ft. lbs. (115-142 Nm).
    2.  
    3. Lower the vehicle.
    4.  
    5. Pump the brake pedal prior to moving the vehicle to seat the brake pads. Refill the master cylinder, if necessary.
    6.  

    INSPECTION



    Front and Rear

    Remove the brake pads and measure the thickness of the lining. If the lining at any point on any of the front pads is less than 0.125 in. (3mm), replace all four front disc brake pads. Also replace all of the front pads if any of them shows any cracking, separation, or contamination from oil, grease or brake fluid.

     
    AutoZone Logo