Chasing the Drive Line Gremlin - The 1947 - Present Chevrolet & GMC Truck Message Board Network

jlget · 02-18-2004, 08:53 PM

Still chasing a vibration in the drive line. I have changed out the center carrier, improved not solved.

It revisiting the problem, there is a couple of areas that might be problematic. First the tail shaft on the transmission has quite a bit of play in it. Is this natural? Second, the rear u-joint as it bolts to the rear end has about 1/8" side play in the area between the u-joint caps and the tabs on the rear end. This seems to me that if installed favoring one side that this would create some vibration. Is this correct? The rear u-joint appears to fit correctly in the drive shaft. It was suggested in an earlier post to have the shaft balanced which I will do once I have eliminated other problems.

Comments?

Jim

Big J · 02-18-2004, 09:08 PM

Looks like your on the right track. There should be no play in any drive line (side to side anyway). The drive shaft spins at such a high rpm if its out of balance the least little bit, you'll feel it. More than likely you'll have to eliminate all the problems you listed before its fixed. Good luck.

02-18-2004, 08:53 PM	#1
jlget Registered User Join Date: Feb 2004 Location: Brazoria County, Texas Posts: 38	Chasing the Drive Line Gremlin Still chasing a vibration in the drive line. I have changed out the center carrier, improved not solved. It revisiting the problem, there is a couple of areas that might be problematic. First the tail shaft on the transmission has quite a bit of play in it. Is this natural? Second, the rear u-joint as it bolts to the rear end has about 1/8" side play in the area between the u-joint caps and the tabs on the rear end. This seems to me that if installed favoring one side that this would create some vibration. Is this correct? The rear u-joint appears to fit correctly in the drive shaft. It was suggested in an earlier post to have the shaft balanced which I will do once I have eliminated other problems. Comments? Jim __________________ '72 Super Cheyenne '78 Bonanza A36 '00 Cadillac DHS '04 Chevy Avalanche

02-18-2004, 09:08 PM	#2
Big J Its lookin' like a Blazer! Join Date: Aug 2003 Location: Gods Country, KY Posts: 1,772	Looks like your on the right track. There should be no play in any drive line (side to side anyway). The drive shaft spins at such a high rpm if its out of balance the least little bit, you'll feel it. More than likely you'll have to eliminate all the problems you listed before its fixed. Good luck.



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