Inspection And Verification

Inspection and Verification

Certain axle and driveline symptoms are also common to the engine, transmission, wheel bearings, tires, and other parts of the vehicle. For this reason, be sure that the cause of the trouble is in the axle before disassembling, adjusting or repairing the axle. For additional information, refer to Vehicle/Testing and Inspection.

Certain driveshaft vibration symptoms are common to the front accessory drive (FEAD), the engine, transmission or tires. Be sure the cause is the driveshaft before repairing or installing a new driveshaft. For additional information, refer to Vehicle/Testing and Inspection.

Certain symptoms may be caused by Traction-Lok (R) differentials. Check the vehicle certification label and axle identification tag to determine the type of differential. For additional information, refer to Vehicle/Application and ID.

Noise Acceptability

NOTE: A gear-driven unit will produce a certain amount of noise. Some noise is acceptable and audible at certain speeds or under various driving conditions such as a newly paved blacktop road. Slight noise is not detrimental to the operation of the axle and is considered normal.

With the Ford Traction-Lok (R) differential, slight chatter noise on slow turns after extended highway driving is considered acceptable and has no detrimental effect on the locking differential function.

Universal Joint (U-Joint) Inspection

Place the vehicle on a frame hoist and rotate the driveshaft by hand. Install a new U-joint if it shows signs of seizure, excessive wear or incorrect seating.