driveline vibration

[BAMF]

I still have some driveline vibration after installing my carrier bearing shim kit. Do I add more shims? Or will it be there until I install some ladder/traction bars? Thanks in advance.

[gingram2000]

Does anyone have a image of dual driveline "clocking"? Or a link to a site that can explain it??

[gingram2000]

Found it. The word I was looking for was phasing.

Measuring propshaft Angles

[BAMF]

Awesome! Thanks for the info. Looks like I may need to add another shim to my carrier bearing. I'll post updates soon.

[BAMF]

sweet... added another shim and it seemed to fix it. Still need those traction bars though. thanks

[Ray Bennett]

I worked on my vibration for months before I figured out that when droping the carrier bearing you can not shim it straight down as you drop it you have to put more angle in it to match the angle of the drive line. this dove me nuts until I realized the carrier bearings on f350s are angled much more than the bearings on 250s. try that before traction bars , you may not need them, how much did you lift the rear?

[BAMF]

it's a 6" lift

[Ray Bennett]

Yep, that is it, no matter how much you drop the bearing you will not get rid of vibes till you angle to match the front drive shaft. Im thinking you will need a 1/4 inch difference in how much more you shim the back. Hope tha helps, no one seems to tell anyone about this little trick. I had to learn the slow hard way.

[BAMF]

Originally Posted by Ray Bennett

Yep, that is it, no matter how much you drop the bearing you will not get rid of vibes till you angle to match the front drive shaft. Im thinking you will need a 1/4 inch difference in how much more you shim the back. Hope tha helps, no one seems to tell anyone about this little trick. I had to learn the slow hard way.

ok, how do i angle it? And do I keep all the shims in there that i have now? Thanks

[gingram2000]

You use the shims to get the angle. Add or subtract.