2004 Ford Expedition

Transcription

1 DISC BRAKE PADS Removal (Front) WARNING: The electrical power to the air suspension system must be shut off prior to hoisting, jacking or towing an air suspension vehicle. This can be accomplished by turning off the air suspension switch located in the right kick panel area. Failure to do so can result in unexpected inflation or deflation of the air springs, which can result in shifting of the vehicle during these operations. CAUTION: Install a new lining if worn to or past the specified thickness above the metal backing plate or rivets. Install new pads in complete axle sets. 1. If necessary, using a suitable suction device, remove the brake fluid in the master cylinder reservoir until it is half filled. 2. Remove the wheel and tire assembly. 3. Inspect the brake pads for wear or contamination. See Fig. 4. CAUTION: If the anchor housing spring is to be reused, do not force the anchor housing spring off the brake caliper. Do not install a damaged anchor housing spring. NOTE: Verify if the anchor housing spring has 1 end with 2 tabs. If yes, the left side anchor housing spring must be installed with the 2-tabbed end in the upper brake caliper cavity. 4. Remove the anchor housing spring. For the left brake caliper, release the lower portion of the anchor housing spring. See Fig. 10. Apply force at the center of the anchor housing spring and pull outward at the bottom of the anchor housing spring to remove it from the lower brake caliper cavity. Rotate the spring upward then remove it from the brake caliper. See Fig. 11. NOTE: On the right side, the anchor housing spring must be installed with the 2-tabbed end in the lower brake caliper cavity. The illustration shows the anchor housing spring end with 2 tabs. See Fig. 12. For right brake caliper, release the upper portion of the anchor housing spring. Apply force at the center of the anchor housing spring and pull outward at the top of the anchor housing spring to remove it from the upper brake caliper cavity. Rotate the spring downward then remove it from the brake caliper. See Fig. 13. NOTE: Do not allow the brake caliper to hang from the brake hose. Wednesday, September 24, :03:44 4:03:49 PM Page Mitchell Repair Information Company, LLC.

2 5. Remove the brake caliper. Remove the zero-drag spring. Remove and discard the brake caliper-to-anchor plate bolts, guide pins and boots. 6. Remove the brake pads from the brake caliper. NOTE: Use a wood block or used brake pad to protect the brake caliper piston boots. 7. Compress the brake caliper pistons. 8. Measure the brake disc thickness. See Fig. 14. Install a new brake rotor if it is not within specification. See FRONT BRAKE ROTOR. Installation 1. Using brake parts cleaner, clean the inner surfaces of the brake caliper where the brake pads attach. 2. Install new brake hardware as follows: Install the guide pin bushings into the caliper bores. Apply grease to the inside of the guide pin bushing. Do not apply grease to the guide pin threads. Push the guide pins into the bushing. 3. Install the inboard brake pad into the brake caliper. 4. Remove the protective paper from the outboard brake pad and install it into the brake caliper. 5. Install the brake caliper on the brake disc. 6. Tighten the guide pins and install the dust caps. 7. Install the zero-drag spring. NOTE: If present, the 2-tabbed end of the anchor housing spring must be installed first. 8. Install the anchor housing spring. Insert tab of the anchor housing spring into the brake caliper cavity. See Fig. 15. Twist tab into the brake caliper cavity (left side-upper brake caliper cavity/right side-lower brake caliper cavity). 9. Rotate the anchor housing spring and position the upper portion onto the anchor plate. See Fig Position the other anchor housing spring portion onto the brake caliper anchor plate. See Fig Push down and inward until the upper and lower ends of the anchor housing spring are latched and seated in the brake caliper cavities. NOTE: The latch must be positioned as shown. See Fig Verify that the anchor housing spring is correctly latched. 13. Install the wheel and tire assembly. Wednesday, September 24, :03:44 PM Page Mitchell Repair Information Company, LLC.

3 14. Apply the brake several times to verify correct brake operation. Fig. 10: Locating Anchor Housing Spring Wednesday, September 24, :03:44 PM Page Mitchell Repair Information Company, LLC.

4 Fig. 11: Removing Left Anchor Housing Spring Wednesday, September 24, :03:44 PM Page Mitchell Repair Information Company, LLC.

5 Fig. 12: Identifying Anchor Housing Spring Wednesday, September 24, :03:44 PM Page Mitchell Repair Information Company, LLC.

6 Fig. 13: Removing Right Anchor Housing Spring Wednesday, September 24, :03:44 PM Page Mitchell Repair Information Company, LLC.

7 Fig. 14: Measuring Front Brake Disc Thickness Wednesday, September 24, :03:44 PM Page Mitchell Repair Information Company, LLC.

8 Fig. 15: Installing Anchor Housing Spring (1 Of 4) Wednesday, September 24, :03:44 PM Page Mitchell Repair Information Company, LLC.

9 Fig. 16: Installing Anchor Housing Spring (2 Of 4) Wednesday, September 24, :03:44 PM Page Mitchell Repair Information Company, LLC.

10 Fig. 17: Installing Anchor Housing Spring (3 Of 4) Wednesday, September 24, :03:44 PM Page Mitchell Repair Information Company, LLC.

11 Fig. 18: Installing Anchor Housing Spring (4 Of 4) Wednesday, September 24, :03:44 PM Page Mitchell Repair Information Company, LLC.