B4000 SE Cab Plus 4 4WD V6-4.0L SOHC (2001)
Companion Flange: Testing and Inspection
Companion Flange Inspection
DRIVE PINION STEM AND COMPANION FLANGE INSPECTION
Check the companion flange runout when ail other checks have failed to show the cause of vibration. One cause of excessive companion flange runout
is improper installation of the axle drive pinion seal. Check to see if the spring on the seal lip has been dislodged before replacing the ring gear and
pinion.
