Brake Disc

Brake Disc





NOTE: Dual Rear Wheels (DRW) shown, Single Rear Wheel (SRW) similar.









Removal

NOTE: The brake disc and the wheel bearing hub are the same part on Rear Wheel Drive (RWD) F-250-F-350 vehicles. To remove or install the front brake disc on RWD F-250-F-350 vehicles, refer to Front Suspension - Rear Wheel Drive (RWD) Service and Repair for the wheel bearing and wheel hub procedure.

All vehicles

1. Remove the wheel and tire. For additional information, refer to Wheels and Tires Removal and Replacement.

2. NOTICE: Do not allow the brake caliper to hang from the brake hose or damage to the hose can occur.

Remove and discard the 2 caliper anchor plate bolts and position the brake caliper and anchor plate assembly aside.

- Support the caliper and anchor plate using mechanic's wire.

Single Rear Wheel (SRW) vehicles

3. NOTE: If the brake disc cannot be removed easily, apply penetrating and lock lubricant on the brake disc-to-wheel hub mating surfaces.

Mark a wheel stud and the corresponding brake disc stud hole.

- This helps to make sure the lowest front brake disc runout is maintained during reassembly.





Dual Rear Wheels (DRW) vehicles

4. Remove the hub extender nuts and the hub extender.

5. NOTE: If the brake disc cannot be removed easily, apply specified penetrating and lock lubricant on the brake disc-to-wheel hub mating surface.

Mark the hub extender stud and the corresponding brake disc extender stud hole.

- This helps to make sure the lowest front brake disc runout is maintained during reassembly.





All vehicles

6. Remove the front brake disc.

Installation

All vehicles

1. Clean any rust or foreign material from the brake disc and wheel hub.
- Use specified brake parts cleaner to clean the front brake disc and hub surfaces.

2. Apply a thin coat of the specified anti-seize lubricant to the hub flange.

3. Align the marks on the disc and the hub and install the brake disc.

DRW vehicles

4. Position the hub extender and install the nuts.
- Tighten to 176 Nm (130 lb-ft).

All vehicles

5. NOTICE: Protect the piston and boots when pushing the caliper piston into the caliper piston bores or damage to components may occur.

If installing a new brake disc, using a suitable tool and a worn brake pad, compress the disc brake caliper pistons into the caliper.

6. Position the brake disc caliper anchor plate and install 2 new bolts.
- On F-250, F-350, tighten to 225 Nm (166 lb-ft).

- On F-450, F-550, tighten to 400 Nm (295 lb-ft).

7. Install wheel and tire. For additional information, refer to Wheels and Tires Removal and Replacement.
- Apply brakes several times to verify correct brake operation.