Ford DT4Z-4K138-A Shaft Assembly

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To remove the drive axle: Remove the drive axle/hub nut while applying the brakes. Disconnect the brake hose bracket and wheel speed sensor wiring harness from the shock absorber. Remove the lower ball joint nut and bolt to separate the lower control arm from the steering knuckle. Use a drive hub remover to separate the drive axle from the hub, and secure the knuckle assembly out of the way with wire. Depending on the model, follow specific instructions: On 2014 and earlier models (right-side drive axle), strike the inner face of the inner CV joint with a brass drift. On 2015-2018 models and 2019 FWD models (right-side drive axle), remove the support bearing retaining strap nuts and pull out the right-side axle assembly. On 2019 AWD models (right-side drive axle), use a prybar to free the end of the drive axle from the intermediate shaft. For the left-side drive axle, use a drive axle remover or pry the inner CV joint out of the transaxle. Carefully support the CV joints and remove the drive axle from the vehicle.

To install a new drive axle: Replace the spring clip at the inner end. Lubricate the seals and insert the drive axle into the differential or intermediate shaft, ensuring the spring clip locks in place. For the left-side drive axle, position the clip gap at 6 o'clock for easier insertion. Apply grease to the outer CV joint splines. Secure the knuckle assembly and connect the lower control arm. Seat the drive axle with the old drive axle/hub nut, tighten it while preventing rotation, then replace it with a new nut, tightening within five minutes of initial threading. Install the wheel, lower the vehicle, and tighten the lug nuts.