All rear axles are identified by a broadcast code on the right axle tube near the carrier. The rear axle identification and the manufacturer's codes must be known before attempting to adjust or to repair the axle shafts or the rear axle case assembly. The rear axle ratio, the differential type, the manufacturer, and the build date information is stamped on the right axle tube on the forward side.

In order to verify reports made on rear axle assemblies, include the full code letters and the build date numbers.

Refer to Maintenance and Lubrication in General Information for periodic maintenance and lubrication intervals.