Orient your box so that the top is pointing up. Open your new wheel box.

Inside you will find a small box which contains the axle and freehub body.

Pull out the wheel and remove the packaging.

Remove the freehub cap.

Open the axle box and remove your hub axle/freehub.

Remove the non-driveside Axle endcap by pulling it away from the driveside hub axle while turning counter-clockwise. Hold the driveside of the axle in place while loosening the endcap.

Remove the packaging from around the freehub body

Ensure your hubshell seal is completely seated and oriented in the correct direction. (This should be ok if you are assembling a new wheel, though if you have recently serviced or removed the seal its a good idea to doublecheck)

Ensure the freehub sleeve is installed on the axle behind the freehub body.

Slide the freehub spacer flush against freehub internals.

Insert the axle into the drive side of the hub.

Gently apply pressure to the freehub and rotate counter clockwise. This will engage the pawls and seat the freehub in the hub shell.

Install non-drive axle endcap. Hold the driveside of the axle in place while loosening the endcap. Apply pressure and tighten clockwise until endcap spins freely.

You have completed your hub assembly!!!