"Broken back driveline"?


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Posted by Clint Dixon [65.125.107.130] on Thursday, August 12, 2010 at 12:39:04 :

In Reply to: How about the transfer case? posted by Chriscase [75.36.47.210] on Thursday, August 12, 2010 at 12:08:22 :

I have never heard it put that way, but yes, this is the path of the axes from the transfer case, through the front driveshaft, and on to the front differential on the WDX-WM300 model Power-Wagons.

The thru axes of the engine/transmission, transfer case, and the rear axle pinion gear are all parallel.

The thru axes of the transfer case and the front axle pinion gear are not parallel but angled at a dimension equalling two times that of the angle between the thru axes of the transfer case and the front driveshaft.

The angle between the thru axes of the front axle pinion gear and the front driveshaft equals the angle between the thru axes of the transfer case and the front driveshaft. This equal angularity eliminates vibration in the front driveline. Only where equal agularity can not be achieved, does a constant velocity joint need to be used.

The front axle housing is factory welded with the correct angled relationship between the 3rd member mounting face, spring perch faces, and steering knuckle pins to provide the equal angularity at both ends of the front driveshaft. Only minimal shimming should be required if angles are found to be unequal after years of use and wear.

Junior



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