Join Date: Apr 2007
Location: Medford, NJ
Thanked 34 Times in 18 Posts
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Actually the best way to learn to check backlash and rotational torque is to watch a video of it being done. The reason is that it is kind of complicated to explain and difficult to visualize using a worded description.
I recommend a DVD by Paul Zank entitled "Differential Rebuilding." In addition to setting up ring and pinions, it will show you how to correctly set up the dial indicator to correctly read the backlash. It will also show you how to read rotational torque. This is absolutely one of those cases where watching the video is worth a thousand words.
2004 Dodge 2500 4WD, 5.9L CTD, 6 speed manual, 4.56 axle ratio, 9.25" Truetrac front differential, 11.5" TracRite rear differential, 4" Rancho lift, JKS swaybar disconnects, 37" BFG KM2, H2 wheels, Magnaflow exhaust, Smarty JR