Testing On Vehicle
With engine off and transmission in Neutral, raise one wheel off ground and block both front and rear of opposite wheel. Install suitable tool across two wheel studs and attach torque wrench to center of tool. Observe torque required to continuously turn wheel smoothly through several revolutions.
NOTE:
Disregard breakaway torque.
Repeat test for opposite side. If differential is operating properly, torque should be 40-200 ft. lbs.