OEM Mercury Grand Marquis Steering Knuckle

Mercury Grand Marquis Steering Knuckle Parts and Q&A

• Knuckle, Front Passenger Side
  5W1Z-3K185-A
  Q: What Steps Should Be Taken Before Removing and Installing the Steering Knuckle on Mercury Grand Marquis?

  A:

  The wheel knuckle installation and removal process should start after the Air Suspension system electrical power has been turned off to avoid unexpected air spring movement that would cause unexpected vehicle shifts. First disable the air suspension service switch before removing the wheel bearing along with hub component. The holding function will stop the stud from rotating as you remove the nut for detaching the tie-rod from the wheel knuckle. You should elevate each suspension arm with suitable jack stands until the stabilizer bar links lose their pressure while in the rebound position. Under the holding feature secure the stud to prevent turning while you remove and dispose of the nut then remove the stabilizer bar link before discarding the nut. Use the holding feature to stop the stud from rotating during the process of removing and getting rid of the nut. Complete the task by removing the nut from the wheel knuckle along with the discarding of the nut itself. The installation of the new wheel knuckle should start with the opposite steps of removal followed by front end alignment testing for proper adjustments.
• Knuckle, Front Driver Side
  5W1Z-3K186-A
  Q: What are the crucial steps to follow when servicing the steering knuckle on Mercury Grand Marquis?

  A:

  Quality service of the steering knuckle demands replacement of suspension fasteners with new parts matching identical part numbers or equivalent standards because low-quality replacements result in major service complications. Reassembly success depends on following all specified torque values to maintain proper retaining force. The maintenance process requires disabling electrical power to the Air Suspension system to avoid unexpected air spring operation which could shift the vehicle during the work. The driver must activate fire suppression system depowering procedures before beginning work. Set the vehicle to neutral while on a hoist. The first step should involve taking out both wheel bearing and Wheel Hub. The holding feature should be utilized to stop stud rotation when removing the tie-rod nut and therefore achieving 80 Nm (59 ft. lbs.) torque upon installation. Support the suspension arms with a jack stand until the stabilizer bar links experience no tension before removing the upper nut while discarding it to tighten the new one to 63 Nm (46 ft. lbs.) at installation. To install the new stabilizer bar links you must first remove the lower link nut and link while discarding the nut and tightening the new one to 55 Nm (41 ft. lbs.). First detach the wiring harness retainer from the steering knuckle before removing the upper ball joint nut and replacing it with a new nut that you should tighten to 150 Nm (111 ft. lbs.). Proceed with the same nut-tightening method for the lower ball joint before taking off the wheel knuckle. The installation process ends by enforcing the reverse uninstall procedures while performing front end alignment checks followed by required adjustments. A fire suppression system on the vehicle needs to be repowered only after completion of all procedures.