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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: got2haul on July 03, 2008, 08:01:54 am
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Does anyone know if it makes any difference in the operation and smoothness of the driveshaft if the driveshaft support bearing is off center just enough to prevent the driveshaft from being in a true straight line from the transmission yoke to the differential yoke? Mine looks like the center bearing isn't exactly centered and is causing the two-piece shaft to have a slight kink to the left at the support bearing where the front and rear sections connect. Not much, but maybe 1/4" to 3/8" of an inch off. I've devised a way to measure it, but haven't had time to construct the jig I'll need. (The support bearing is mounted as far to the right as the original mounting bolt-holes will allow.)
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Tie a string from the center of two yokes like a chalk line. Then mark the center of the center support and the support bearing. then align your two witness marks.
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Ok, I get it. Doh! Why didn't I think of that? Remove the bolts from the support bearing so the string can pass over the bracket and I can mark its center in relation to the yokes' center. Then measure and mark the center of the bearing and line the two up. Thanks!
Good stuff, this forum!