The Ford Barn

mach0415 · 09-23-2012, 03:46 PM

I would also check the u-joint. FWIW A u-joint will vibrate at those higher speeds under power and then when power is removed in a coast down, vibration will decrease.

George Miller · 09-23-2012, 04:00 PM

Quote:

Originally Posted by juke joint johnny

I think George means the one inside the front of the torque tube !!
John Cochran

Yes that is the one, very important. When the drive shaft is turning in the 2000 rpm range, it will let the U joint move around on the back side, if it is not there.

columbiA · 09-23-2012, 10:27 PM

A friends car had a bad vibration over 35 mph.The problem was that the inner ball cap around U-joint was not installed.Front of TTwas free to jump up & down & DS moved forward enough to knock out the brg stop on trans case & required another case to repair.

09-23-2012, 03:46 PM	#21
mach0415 Senior Member Join Date: Jul 2011 Location: Chester, SC Posts: 162	Re: a vibration problem at 40 mph I would also check the u-joint. FWIW A u-joint will vibrate at those higher speeds under power and then when power is removed in a coast down, vibration will decrease. __________________ Thanks, Mark in SC "We the unwilling, led by the unknowing, are doing the impossible for the ungrateful." -- By society, who is still arguing over who said it.

09-23-2012, 10:27 PM	#23
columbiA Senior Member Join Date: Nov 2011 Location: B.C. Canada Posts: 1,746	Re: a vibration problem at 40 mph A friends car had a bad vibration over 35 mph.The problem was that the inner ball cap around U-joint was not installed.Front of TTwas free to jump up & down & DS moved forward enough to knock out the brg stop on trans case & required another case to repair.