KLB

I have a shutter symptom went moving from a dead stop through 1st gear. The
shutter seems to disappear once we get into 2nd gear and I can't say that I
notice it in third or overdrive.

I have had the center bearing replaced and am wondering if the drive shaft
could be out a quarter, half or three quarters of a turn?

Everything else seems fine, any ideas?

KLB

Sorry folks lets try this again Shutter = Shudder (odd vibration)

James Sweet

KLB wrote:
> Sorry folks lets try this again Shutter = Shudder (odd vibration)
>
>


I've seen this caused by bad U-joints, that's the first thing I'd check.

KLB

U-Joints seem ok but I will check again just to be sure. Is it critical
that one marks drive shaft when replacing center bearing?

Michael Pardee

"KLB" <JennickREMOVE@ns.sympatico.ca> wrote in message
news:r7qnf.138583$Ph4.4240696@ursa-nb00s0.nbnet.nb.ca...
> U-Joints seem ok but I will check again just to be sure. Is it critical
> that one marks drive shaft when replacing center bearing?
>
Not to that extent. I echo the u-joint concern - if one has a spot where it
binds, it will behave like that. Mis-indexing the driveshaft causes a more
constant, subtle vibration at higher speeds rather than at lower speeds.

Mike

User

In article <r7qnf.138583$Ph4.4240696@ursa-nb00s0.nbnet.nb.ca>,
JennickREMOVE@ns.sympatico.ca says...
> U-Joints seem ok but I will check again just to be sure. Is it critical
> that one marks drive shaft when replacing center bearing?
>
>
>
If you inspect the drive shaft closely on either side of the joint at
the center support, you will see a small, faintly stamped set of arrows
pointing at each other. This was the orientation of the shafts when they
were balanced as a unit at the factory. You likely will have to do a lot
of cleaning to find the marks. The longitudinal length of each arrow is
about 1/2" with often just a single line for the point at a 30* angle.
The drive shaft alignment should be: )=====-(|======|, where )and(
represents the orientation of the front joint and the forward joint on
the front shaft and | represents the opposite joint sections rotated in
the same plane by 90*.

Bob
--
The goal when driving is to miss the maximum number of objects.

KLB

Thanks Bob, will start cleaning first chance I get.