Q: How to service and repair the wheel hub on Lincoln LS?
A: The first step for working on wheel hubs requires placing the vehicle in NEUTRAL position while hoisting it on a stand. The shock absorber and spring assembly must come off before tackling an upper arm removal. The illustrations and tables present an ordered sequence for removing suspension components which should be followed exactly. The brake caliper pad and anchor plate removal must be performed carefully because hanging the caliper from the hose can result in damage. The removal of the lower arm-to-frame bolt begins with removing screws as well as pushpins and shield to expose the bolt before taking out the nuts and bolts while setting the steering gear to one side to free up the lower arm bolt. Follow installation of the lower arm by checking and aligning the front end if needed. The lower arm-to-frame nuts should remain loose until the installation process finishes along with the vehicle resting its weight onto wheel and tire assemblies. The upper arm-to-body nuts should remain loose until all installation steps are finished with the vehicle weight resting on the wheel and tire assemblies. During wheel bearing and hub assembly installation you should apply a small amount of lubricant to the surfaces where the bearing meets the knuckle.
Q: What precautions should be taken before servicing the wheel hub and what are the steps involved in the process on Lincoln Town Car?
A: The service and repair work on the wheel hub must start with disabling electrical power to the air suspension system to prevent sudden air spring inflation which could result in vehicle movement. The service requires first disconnecting the speed sensor electrical connector followed by stripping the wheel and tire combination. First detach the bolts to safely position the caliper along with pads and anchor plate to the side before removing the brake disc. Unfasten the retainers before taking out the bolts which keep the wheel bearing hub assembly together. The final step for installation includes doing the opposite of all removal actions.