Drive Shaft Balance
- Often drive shaft imbalance can be cured by disconnecting shaft, and rotating it 180° in relation to other components. Test by raising rear wheels off ground, and turning shaft with engine.CAUTION: DO NOT run engine with transmission engaged for prolonged periods, as overheating of engine or transmission may occur.
- On most models, balancing may be done by marking shaft in 4 positions, 90° apart. Place marks approximately 6" forward of weld, at rear end of shaft. Number marks 1 through 4.
- Place a screw-type hose clamp in No. 1 position, and rotate shaft with engine. If there is little or no change, move clamp to No. 2 position, and repeat test.
- Continue procedure until vibration is at lowest level. If no difference is noted with clamp moved to all 4 positions, vibrations may not be drive shaft imbalance.
- If vibration is lessened but not completely gone, place 2 clamps at that point, and run test again. The combined weight of clamps in 1 position may worsen vibration. If so, rotate clamps 1/2" apart, above and below best position, and repeat test.
- Continue to rotate clamps as necessary, until vibration is at lowest point. When point is reached where vibration has been eliminated, bend end of clamp so it will not loosen. If vibration level is still unacceptable, repeat procedure at front end of drive shaft.
NOTE: Shaft flange & slip joint flange in same plane.