Differential Assembly: Application and ID
Driveline SystemThe source of the drivetrain's power is generated by the engine and delivered to the transmission. The driveline transfers the engine torque through the driveshaft to the axle.
The driveshaft is connected to the output shaft of the transmission and to the axle.
Vehicles with 4.0L engines use universal joints at both ends of the driveshaft to allow for angular motion. A slip yoke is used to allow for any changes to the length of the driveshaft.
Vehicles with 4.6L engines use a constant velocity joint in the rear of the driveshaft and a universal joint in the front. A center bearing and the constant velocity Joint allow for length changes to the driveshaft.
The engine torque enters the axle through the drive pinion, which rotates the ring gear. The ring gear is mounted to the differential case, which contains the gears that transmit power to the axle shafts. These shafts rotate the drive wheels. Available axles are as follows:
^ Conventional axle-Ford 7.5-inch ring gear
^ Conventional axle-Ford 8.8-inch rear axle
^ Limited slip axle-Ford 8.8-inch rear axle
For additional information on the driveshaft.
The engine angle is built into the engine mounts. If the engine angle is out of specification, the engine mounts must be inspected for damage.
The vehicle certification (VC) label is located in the driver door jamb. The axle code is on the VC label.
Vehicle Certification (VC) Label Example:
Rear Axle Identification Label:
