I like the direct gear lash measurement of Steve's method, it would seem that is the more accurate way. That being said, I wish we had better guidance on the lash setting. .010-.020 is a lot of tolerance for something that is supposed to be precise.
Has anyone been skilled enough to get an LMTV to sound smooth and quiet (whirring noise aside, relatively) at 55mph?
Would it help to put in Royal Purple Maxgear 75w-140 Synthetic (with protection for yellow metals)? Is there a heavier option?
Here is the noise it makes at 50-57mph (closer to 60, speedometer reads low according to GPS). It sounds so much less severe on video than in the truck. Listen for the low frequency growling sounds. When the hubs are warmer, the vibration happens at lower speeds.
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