The front drive axle assembly used on the E-4WD (electronic four wheel drive) Aerostar is a Dana model 28-2. An identification tag is attached to the cover plate via a cover bolt.
The differential carrier is made of aluminum and is mounted to the sub-frame assembly. The axle shafts are retained by C-clips in the differential case. The differential assembly must be lowered from the sub-frame assembly to remove the axle shafts. The differential bearings are adjusted and preloaded using shims placed in between the bearings and differential case.