Lincoln 7L1Z-3078-A Arm Assembly - Front Suspension

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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.

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.

Remove the parking brake cable bracket bolt, upper arm-to-wheel knuckle bolt, and upper arm bushing nuts and bolts.

Yes, there are procedures provided for lower control arms, upper control arms, toe link rods, trailing arms (on 2007 and later models), and stabilizer bars.

When dealing with stubborn fasteners due to rust or corrosion, use penetrating oil, wire brushes, and caution. Strategies like applying a sharp blow with a hammer, heating the fastener area, or using breaker bars can help. However, exercise caution to prevent thread damage or fire hazards. Replace difficult-to-unscrew fasteners with new ones. For safety, use reliable jackstands and prefer a hydraulic floor jack for lifting and supporting components during various operations.

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.