OEM Lincoln LS Steering Knuckle

Lincoln LS Steering Knuckle Parts and Q&A

• Knuckle, Front Passenger Side
  4W4Z-3K185-BA
  Q: How to Properly Maintain and Fix a Steering Knuckle on a Lincoln LS?

  A:

  Service and repair of the steering knuckle starts with hub bearing removal followed by hub removal. You should use the hex holding feature on the stud to avoid turning it when removing its nut before disconnecting the tie-rod end from the wheel knuckle and discarding this nut. A jack stand should be used to carry the knuckle weight after you disconnect the lower Control Arm. The hex holding feature should be used while removing the stud to prevent turning motion since the tapered washer from the ball joint needs to stay in place. Discard the nut after you detach the knuckle from the tapered washer through the nut removal process. For safe installation of the knuckle to the upper control arm always use a jack stand to suspend the weight because without it damaging could occur. A torque prevailing design characterizes the upper arm-to-knuckle nut and the lower arm-to-knuckle nut and tie-rod-to-knuckle nut components so new nuts need to be used. Install the knuckle by putting the tapered washer onto the ball joint attachments prior to upper and lower control arm attachment to the knuckle. The installation process ends by following specified torque values in reverse order to achieve proper part retention.
• Knuckle, Front Passenger Side
  6W4Z-3K185-AA
  Q: How to Service and Repair the Front Steering Knuckle on Lincoln LS?

  A:

  The first step to service the front wheel knuckle requires wheel bearing and hub removal. The hex-holding function stops stud rotation so you can remove tie-rod end nuts but you should separately discard the end before disconnecting the tie-rod end from the wheel knuckle. Reinstall the end using a torque of 100 Nm (74 ft. lbs.) when complete. Use a suitable jack stand to carry the knuckle weight when the lower Control Arm is disconnected to protect the upper control arm. Before disconnecting the suspension lower arm from the knuckle tighten the new nut to 200 Nm (148 ft. lbs.). Utilize the hex-holding function to stop stud rotation during removal and diskarding of the lower ball joint-to-lower arm nut. The nut removal enables knuckle detachment from the control arm and new application of the knuckle-to-upper control arm nut requires a torque setting of 90 Nm (66 ft. lbs.). The knuckle needs proper support during attachment to the upper control arm to avoid damage to the structure. The installation of new nuts becomes necessary because the upper arm-to-knuckle nut, lower arm-to-knuckle nut, and tie-rod-to-knuckle nut use a torque prevailing design. Reinstall the tapered washer onto the ball joint before putting back the upper and lower control arms to the knuckle while following the previously used removal steps.