Lincoln 6L1Z-3084-BA Arm Assembly - Front Suspension

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2WD models use coil springs and shock absorbers, while 4WD models utilize shocks and torsion bars. Coil springs are positioned between spring pockets on the frame and lower control arms for 1997-2002 models. In contrast, 2003 and later models have shock absorbers integrated into shock absorber/coil spring assemblies.

To disconnect the upper control arm from the steering knuckle, remove the cotter pin from the balljoint castle nut, loosen the nut a few turns (without removing it), use a small puller to break the balljoint loose from the knuckle, and then remove the nut. Afterward, remove the upper control arm pivot bolts and nuts. During this process, inspect the pivot bolt bushings for wear. If they are worn, the control arm needs replacement. Also, inspect the upper balljoint seal. If it's leaking, replace the control arm, as the balljoint itself is not serviceable.

Yes, warnings about specific procedures are mentioned.

Turn off the air suspension system.

Position a floor jack with a wood block under the lower control arm to relieve spring pressure from the upper control arm. Mark the position of the upper control arm camber adjustment cam. If the vehicle has a 4-wheel anti-lock brake system (4WABS), remove the bracket bolt for the wheel speed sensor wire and place the sensor wire out of harm's way.

While both 2WD and 4WD models have similar steering knuckles, their wheel bearing setups differ. 2WD models use inner and outer tapered roller bearings on a spindle within the steering knuckle, while 4WD models employ sealed hub and bearing assemblies bolted to the knuckle.