F 350 4WD Pickup V8-351 5.8L VIN H EFI (1997)
Drive/Propeller Shaft: Testing and Inspection
Driveshaft Vibration
1. Road test vehicle to determine critical vibration points. Note road speed, engine rpm and shift lever positions at which vibration occurs.
2. Stop vehicle and run engine with clutch depressed (automatic transmission in NEUTRAL) through critical speed ranges determined in Step
3. With clutch depressed, all potential engine and clutch concerns are eliminated. If vibration persists, the driveshaft must be balanced.
