How to Check a Driveshaft

Written by tina reichmann
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Driveshafts are made of steel and aluminium and contain U joints that permit the shaft to turn at angles. When driveshafts are manufactured, they are balanced by a weight welded on the sides. The signs of an imbalanced driveshaft are comparable to those of an out-of-balance tire. You can check the driveshaft yourself to see if it is imbalanced.

Skill level:
Moderately Easy

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Things you need

  • Wheel chocks
  • Car jack
  • Jack stand
  • Safety glasses

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Instructions

  1. 1

    Chock your wheels to be certain the car is parked on a level surface. Make sure the parking brake is set.

  2. 2

    Insert a floor jack under your car's lift point. Raise the car until you have enough room to access the driveshaft and install the jack stand underneath the vehicle.

  3. 3

    Put on your safety glasses and crawl under the vehicle. Grab the driveshaft. Turn it to the left and right with your hand to check the U-joints. If there is excessive movement, the U-joints might need to be replaced.

  4. 4

    Inspect the driveshaft for abnormalities. If it has dents, it might be imbalanced and in need of replacing.

  5. 5

    Remove the jack and lower it to remove wheel chocks

  6. 6

    Test-drive the vehicle to see if the driveshaft is balanced. If it is not, it will create a vibration in the seat and floor.

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