B4000 SE Cab Plus 4WD V6-4.0L OHV (1997)
Propeller Shaft: Service and Repair
Balancing
NOTE: Vibration or shudder during fast acceleration, coasting, or during engine braking, may be caused by the rear axle casing being loose, tire
balance, improper driveline installation or balance.
If vibration occurs after propeller shaft service:
1. Disconnect the propeller shaft and remove the front yoke.
2. Rotate the front yoke 180 degrees.
3. Connect the propeller shaft to the front yoke and reinstall in vehicle.
4. If the vibration persists, disconnect the propeller shaft at the rear yoke.
5. Rotate the rear yoke 180 degrees and reconnect the propeller shaft to the rear yoke.
NOTE: If rotating the propeller shaft 180 degrees does not eliminate vibration, balance the propeller shaft.
6. Balance the propeller shaft.
WARNING: Use caution when checking the propeller shaft.
a. Raise and support the vehicle.
NOTE: Both front and rear axles should be supported to allow all of the wheels to rotate at normal ride height.
b. With the transmission in gear, increase the vehicle speed to the maximum vibration level.
c. Note and record the speed of this vibration period as a base-line speed.
d. Run the vehicle until the propeller shaft rotating speed is 64 - 80 km/h (40 - 50 mph).
NOTE: Do not run the vehicle for an extended period of time.
e. Carefully mark the propeller shaft with chalk as the chalk initially contacts the rear, center and front of the propeller shaft.
NOTE: The chalk marks will indicate the heavy side of the propeller shaft.
f.
Install two hose clamps on the propeller shaft so that their heads are located 180 degrees from the chalk mark, starting at the rear yoke end of
the propeller shaft.
