EBS00540 FAULTY DRIVE TRAIN The following conditions may indicate damaged shaft drive components: NOTE: _ Areas A, B, and C above may be extremely difficult to diagnose. The symptoms are quite subtle and difficult to distinguish from normal vehicle operating noise. If there is reason to believe these compo- nents are damaged, remove the components and check them. 10 - 3 FAULTY DRIVE TRAIN TRBL SHTG Symptoms Possible Causes 1. A pronounced hesitation or “jerky” move- ment during acceleration, deceleration, or sustained speed. (This must not be con- fused with engine surging or transmission characteristics.) 2.
A “rolling rumble” noticeable at low speed; a high-pitched whine; a “clunk” from a shaft drive component or area. 3. A locked-up condition of the shaft drive mechanism, no power transmitted from the engine to the front and/or rear wheels. A. Bearing damage. B. Improper gear lash. C. Gear tooth damage. D. Broken drive shaft. E. Broken gear teeth. F. Seizure due to lack of lubrication. G. Small foreign objects lodged between the moving parts.