Ford 5L1Z-3B436-AA Joint And Stub Shaft Assembly

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First of all, to remove the rear axle assembly, turn off the air suspension system if equipped. Loosen the rear wheel lug nuts, lift the rear of the vehicle securely with jack stands, and block the front wheels. Disconnect the rear axle brake lines, vent tube, and brake hose. For truck models, position a floor jack under the differential case, disconnect the shock absorbers, and remove the spring U-bolt nuts, U-bolts, and spring plate. On 4WD models, remove the rear spring spacers while lowering the axle. For Expedition and Navigator models, remove the stabilizer bar brackets, lower the stabilizer bar, disconnect the air suspension system height sensor, and support the rear axle differential case with a floor jack. Disconnect the rear axle track bar, remove the rubber jounce bumper, and disconnect suspension arms and shock absorbers. Lower the axle assembly to the floor.

After supporting the driveaxles, the front crossmember needs to be removed.

Once all attachments are disconnected from the axle housing, you should carefully lower the axle assembly to the floor.

The differential is offset to the left, requiring a longer axleshaft on the right side to maintain equal lengths.

During removal, you should remove the brake disc and suspend the brake caliper with mechanic's wire. Also, remove the bolt retaining the parking brake cable to the control arm and cover the stabilizer bar link stud threads.

Remove the front carrier bushing bolts.

To remove the axleshaft, you push the outer (flanged) end of the axleshaft in and remove the C-lock from the inner end of the shaft. Then, you withdraw the axleshaft, being careful not to damage the oil seal in the end of the axle housing as the splined end of the axleshaft passes through it.

The axle identification tag is usually located on the differential cover or the inner end of the right axle tube.

Follow the reverse of the removal process.

For rear driveaxle removal on these models, block the front wheels, loosen the wheel lug nuts, raise the rear of the vehicle with jackstands, and remove the wheel.

After removing the lock bolt, you rotate the differential case 180-degrees and slide the pinion shaft out of the case until the stepped part of the shaft contacts the ring gear.

The notched end of the pinion shaft should be slid out of the differential case as far as it will go.

An optional locking limited-slip rear axle allows for normal operation until one wheel loses traction, at which point it equalizes the rotation speed of the axleshaft driving the wheel with traction.

Swing the knuckle/hub assembly out (away from the vehicle) until the end of the driveaxle is free of the hub.

Tighten the caliper mounting bolts to the specified torque.