Inspect the driveshaft every 10 000 km (6.000 miles).
1. Check the output input and yokes on transmission and axles for looseness. If loose, disconnect driveshaft and torque end yoke retaining nut to pecification.
2. Check for excessive radial looseness of the transmission input and output shafts.
3. Check for excessive looseness should not exceed 0.15 mm (.006 in).
4. Check the slip spline for excessive radial movement. Radial looseness between the slip yoke and the tube shaft should not exceed 0.17mm (.007 in.).
5. Check the shaft for damage, bends or missing balance weights. Remove any foreign material on the shaft, such as undercoat or concerte.
6. If run out readings are required, remove the axle shaft and place the transmission in neutral. With the driveshaft mounted in the vehicle, rotate the driveshaft by hand and check the indicator readings. The runout readings should not exceed an additional .010 T.I.R. beyond readings shown.
7. Check Welch plug for looseness.
NOTE: If Welch plug is missing, check driveshaft length to be sure stub shaft is not hitting the Welch plug and dislodging it.