how to fix the rear end noise on Ford F-150 Fourteenth Generation (2021-present)?

Solution

1. Preparation

• Gather tools and parts needed for the repair.
• Ensure the vehicle is parked on a level surface and engage the parking brake.
• Disconnect the battery if working on electrical components.

2. Inspect and Replace Rear Differential Fluid

• Tools Required: Socket set, fluid pump, drain pan
• Instructions:
  1. Remove the differential cover bolts using a socket set.
  2. Carefully pry off the cover to drain the old fluid into a drain pan.
  3. Inspect the cover for metal shavings or debris.
  4. Clean the mating surfaces of the differential and the cover.
  5. Replace the old fluid with manufacturer-recommended differential fluid, using a fluid pump for precision.
  6. Reinstall the differential cover with a new gasket and torque the bolts to the manufacturer's specifications.

3. Inspect and Replace Wheel Bearings

• Tools Required: Jack and jack stands, bearing puller, torque wrench
• Instructions:
  1. Lift the rear of the vehicle and secure it with jack stands.
  2. Remove the rear wheels using a socket set.
  3. Remove the brake caliper and rotor to access the wheel bearing.
  4. Use a bearing puller to remove the old wheel bearing from the hub.
  5. Install the new wheel bearing, ensuring it is properly seated.
  6. Reassemble the brake rotor and caliper, and reinstall the wheels.
  7. Torque the wheel nuts to specification.

4. Inspect and Replace Axle Components

• Tools Required: Socket set, torque wrench, pry bar
• Instructions:
  1. Inspect the axle shafts for any signs of damage or excessive wear.
  2. If necessary, remove the axle shafts by unbolting the differential cover and axle retaining bolts.
  3. Replace any damaged axle components and reassemble, ensuring proper torque on all bolts.