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If you do, don't forget that the tandem axles are tied together by their center drive shaft, nothing will turn unless at least two wheels are jacked up. -Chuck

Do lockouts help? Yes, and no. They only help fuel mileage to the degree that they stop the gears in a differential from spinning, and to the degree that they stop tire scuffing. First, lockouts should not be used on the front axle of a truck that has a sprag transfer case.... it will do...

Differentials confuse a lot of people. Although it appears from a diagram that there is a driven and a non driven side, it isn't really that way. Unless the differential is broken, neither axle shaft is directly connected to the ring and pinion set. The ring and pinion set drive a spider gear...

Absolutely correct! To anyone that is confused about that, think about what your car does when it suddenly accelerates: The front lifts up, and the back hunkers down. This is because the center of mass is above the wheels, and the wheels are trying to run away from the center of mass.... that...

Here's a copy. -Chuck