Expedition 2WD V8-281 4.6L SOHC (1998)
6. Check the attachment of the driveshaft to the rear axle flange. Replace any worn parts.
7. WARNING: KEEP HANDS AWAY FROM THE BALANCE WEIGHTS WHILE THE DRIVESHAFT IS ROTATING.
Check the driveshaft for out of balance.
1
With the transmission in gear, run the vehicle with the speedometer indicating 64-80 km (40-50 mph).
2
Have an assistant barely contact the driveshaft with a marker in the rear, middle, and front ends to indicate heavy spots.
8. Balance the driveshaft.
1
Install two stainless steel screw-type hose clamps on the driveshaft with the clamp screws opposite the mark.
2
Tighten the hose clamps starting at the pinion yoke end of the driveshaft.
9. Run the vehicle at 64-80 km (40-50 mph).
10. If the vibration is still evident, rotate the clamps away from each other until balanced and test.
11. If necessary, continue to rotate the clamps apart in smaller increments and test. If the vibration still exists, repeat the procedure at the front of the
driveshaft.
