Ford 9L3Z-3079-A Arm Assembly - Front Suspension

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The manufacturer advises discarding removed suspension component fasteners (nuts and bolts) and replacing them with new ones. To begin, loosen the wheel lug nuts and raise the front of the vehicle, supporting it securely on jackstands. Apply the parking brake and remove the wheel. Next, remove the wheel speed sensor from the steering knuckle. Then, remove the shock absorber/coil spring. Loosen the upper balljoint nut and use a balljoint separator or puller to separate the balljoint from the steering knuckle. Take caution not to allow the steering knuckle to fall outward, as it may damage the brake hose. It is recommended to wire the steering knuckle to the coil spring to prevent this. Proceed to remove the fasteners and detach the upper control arm from the frame. Inspect the bushings for wear and deterioration, and if necessary, have new bushings installed at an automotive machine shop. Installation is the reverse of removal, ensuring all suspension fasteners are tightened. It is advisable to have the wheel alignment checked and adjusted if needed.

Remove the lower shock absorber/coil spring fasteners.

Yes, the importance of simulating ride height before final tightening is emphasized.

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.

Measure the height of the center of the hub to the ground before proceeding. These measurements help ensure proper alignment and suspension adjustment. Additionally, you should loosen the wheel lug nuts and raise the front of the vehicle while securely supporting it on jackstands. Remove the wheel.

Yes, the importance of simulating ride height before final tightening is emphasized.

The front suspension system includes a steering knuckle, upper and lower ball joints, upper and lower control arms, coil springs, and shock absorbers (or shock absorber/coil spring assemblies).

Position the arm in the frame brackets and install new bolts and nuts, ensuring they are installed with their heads facing toward each other. Align the marks made prior to disassembly. Tighten the pivot bolt nuts, starting with the front nut, but do not torque them yet.