Brake Rotors - Front Pair

This procedure removes and replaces the front brake rotors on a 2021-2024 Ford F-150 with 3.5L EcoBoost V6 RWD. Includes caliper bracket removal and rotor replacement with proper torque specifications.

Warnings

Tools required

Parts

• Front brake rotors × 2 — Use OEM specification or quality aftermarket
• Rotor set screws (if corroded) × 2 — M6 x 1.0 x 10mm

Preparation

1. Park vehicle on level, solid surface and engage parking brake
2. Loosen front wheel lug nuts 1/4 turn while vehicle is on ground
3. Raise front of vehicle with floor jack at designated front jacking point
4. Support vehicle securely on jack stands placed at frame rail jacking points
5. Remove front wheels completely and set aside
6. Verify vehicle stability by gently pushing on fender before working underneath

Procedure

1. 1

   Remove caliper bracket bolts
   Locate the two caliper bracket bolts on the rear of the caliper assembly (18mm hex heads). These bolts secure the entire caliper and bracket assembly to the steering knuckle. Using a breaker bar if necessary, loosen and remove both bolts completely. Support the caliper assembly as you remove the second bolt to prevent it from falling.
   Torque spec

   Bracket Bolts117 Nm (86 lb-ft)
2. 2

   Support caliper assembly
   Carefully lift the entire caliper and bracket assembly off the rotor. Do NOT disconnect the brake hose. Use wire, a bungee cord, or a suitable hanger to suspend the caliper assembly from the suspension or frame. Ensure there is no tension or strain on the rubber brake hose. The caliper should hang freely without pulling on the hose.
   ⚠️Never let the caliper hang by the brake hose. Hose damage can cause brake fluid leaks and complete brake failure.
3. 3

   Remove rotor set screw
   Locate the small set screw in the face of the rotor (typically T30 Torx or Phillips head). This screw retains the rotor during assembly. Remove the set screw completely. If the screw is corroded or strips, it may be drilled out carefully. Note: Some rotors may not have this screw depending on previous service.
   Torque spec

   Rotor Set Screws8 Nm (6 lb-ft)
4. 4

   Remove old rotor
   Pull the rotor straight off the wheel hub. If the rotor is stuck due to corrosion, tap it gently from behind with a rubber mallet, alternating sides. Do NOT strike the rotor face. If severely corroded, spray penetrating oil around the hub center and allow to soak for several minutes. On F-150s, rotors can be quite heavy (approximately 20-25 lbs each), so maintain firm grip when removing.
5. 5

   Clean hub mating surface
   Use a wire brush to thoroughly clean the wheel hub face where the rotor mounts. Remove all rust, corrosion, and debris. The hub surface must be clean and flat to prevent rotor runout (wobble) which causes vibration and uneven wear. Pay special attention to the raised hub center and the flat mounting surface. Wipe clean with brake cleaner.
6. 6

   Prepare new rotor
   Remove new rotor from packaging. Clean both sides of the new rotor thoroughly with brake cleaner to remove protective oil coating. Wipe with a clean, lint-free cloth. Optionally, apply a thin coat of anti-seize compound to the hub center (not the rotor friction surfaces or mounting face). Ensure the rotor friction surfaces remain completely free of any contaminants.
7. 7

   Install new rotor
   Slide the new rotor onto the wheel hub, aligning the screw hole. Push the rotor fully onto the hub ensuring it sits flat against the hub face with no gaps. The rotor should rotate freely without wobbling. Install the rotor set screw and tighten to specification to hold the rotor in place during caliper installation.
   Torque spec

   Rotor Set Screws8 Nm (6 lb-ft)
8. 8

   Reinstall caliper bracket assembly
   Remove the caliper assembly from its support. Inspect brake pads for wear (if replacing pads, do so now before reinstalling). Position the caliper bracket over the new rotor, aligning the bracket bolt holes with the knuckle mounting points. Apply medium-strength thread locker to the caliper bracket bolt threads as specified. Start both bracket bolts by hand to ensure proper thread engagement.
   ⚠Thread locker is recommended per service specifications. Ensure bolts are not cross-threaded during installation.
   Torque spec

   Bracket Bolts117 Nm (86 lb-ft)
9. 9

   Torque caliper bracket bolts
   Using a calibrated torque wrench, tighten both caliper bracket bolts to the specified torque of 120 Nm (88 lb-ft). Tighten in stages: first to 60 Nm, then to final specification. Verify both bolts are torqued correctly. These are critical fasteners - under-torquing can result in caliper detachment during braking.
   ⚠️Caliper bracket bolts MUST be torqued to exact specification. Failure can cause caliper detachment and total brake failure.
   Torque spec

   Bracket Bolts117 Nm (86 lb-ft)
10. 10

    Verify caliper operation
    Before reinstalling the wheel, pump the brake pedal several times to verify caliper piston movement and pad seating. The pedal should become firm. Visually verify the brake pads are contacting the rotor properly and the caliper moves freely. Check that no brake hoses are kinked, twisted, or under tension.
11. 11

    Reinstall wheel
    Clean the wheel mounting surface on the rotor hat. Position the wheel onto the hub and install all lug nuts by hand. Using a torque wrench, tighten lug nuts in a star/cross pattern to the specified torque of 140 Nm (103 lb-ft). Go around twice in the star pattern to ensure even seating.
    Torque spec

    Wheel Lug Nuts140 Nm (103 lb-ft)
12. 12

    Repeat for opposite side
    Repeat steps 1-11 for the other front wheel. Both front rotors should be replaced as a pair to ensure balanced braking performance. Maintain the same attention to cleanliness, torque specifications, and caliper support throughout.

Reassembly

1. After both wheels are reinstalled and torqued, lower the vehicle to the ground
2. With vehicle on ground, re-torque all wheel lug nuts to 140 Nm (103 lb-ft) in star pattern to verify proper seating
3. Do NOT drive vehicle until brake pedal verification is complete

Verification

• Sit in driver's seat and pump brake pedal firmly 10-15 times. Pedal should become firm and hold steady pressure. If pedal is soft or sinks, DO NOT DRIVE and inspect for issues
• Start engine (power brakes will assist) and verify firm pedal feel with no excessive travel
• Perform a low-speed test drive (5-10 mph) in a safe area to verify brakes engage properly with no noise, vibration, or pulling to one side
• Perform several moderate stops from 30 mph to bed in the new rotors with existing pads (or new pads if replaced)
• Avoid hard braking for first 200 miles to allow proper break-in of rotor surface
• After first 50 miles, re-check wheel lug nut torque at 140 Nm (103 lb-ft)
• Visually inspect for any brake fluid leaks around caliper area after test drive

More procedures for this vehicle