That's exactly how its supposed to work. Jack up any of the 4 wheel ends and it'll do that, not just on the rear axle.
Think about it, with a single drive axle, both rear wheels drive. Break either axle shaft and you're stuck. The power divider is just another differential between the 2 drive axles and behaves the same way. Power splits 50/50 to both axles all the time. All locking the power divider in does is remove the differential action from the power divider. This causes both drive axles to be driven at the same speed, rather than multiply speed through the gearsets to the 1 wheel that has lost traction.
Front axle on tandem
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by biggi1996, Jun 7, 2021.
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The input shaft doesn't go straight through and out the back, it actually drives a gear which relays power down to the front drive axle pinion. At the same time the back end of that input shaft drives a spider gear on the interaxle. Effectively its just putting a mini differential between the drive axles and it behaves exactly the same. Interaxle lock simply locks the input shaft to the interaxle carrier, making it solid. -
Well would one of you explain the problem at hand instead of being myth busters and pointing out what the problem is not.
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Stray dog. When I put truck in gear truck will not move, rear axle spins and front won't .
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How do you mean rear axle spins?
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It turns as it would if driviining, but front did not.
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Does only the front diff have spring brakes on it and the rear one doesn’t? If it does. Are they releasing?
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