DRIVE SHAFT WITHOUT INTERMEDIATE SUPPORT
| Drive shaft fault diagnosis = | 
| Symptom | 
| 1.The drive shaft is of radial runout. | 
| >The drive shaft sliding yoke fails to be assembled correctly. | 
| >The drive shaft is distorted or bending. | 
| >The universal knuckle shaft journal or needle bearing is worn out. | 
| >The connecting bolt is loose. | 
| >The drive shaft is unbalanced. | 
| >The intermediate support bearing is worn out or damaged. | 
| >The intermediate support bearing bracket is loose or the rubber cushion block is aged. | 
| 2.There is abnormal noise at starting and during running | 
| >The universal knuckle is worn out or damaged. | 
| >The sliding yoke is worn out or damaged. | 
| >The drive shaft is loose. | 
| >The needle bearing, sliding yoke and intermediate bearing are short of lubricant. |