Drive line angle

[Bill in pa]

I have a carrier bearing and a slight vibration.
Any ideas how to change the angle to solve this?
Rear of trans is 3° up.
Front shaft is 1° down.
Rear shaft is 0°.
Front of to tandem is 1° up.

 

[rustystud]

What

I have a carrier bearing and a slight vibration.
Any ideas how to change the angle to solve this?
Rear of trans is 3° up.
Front shaft is 1° down.
Rear shaft is 0°.
Front of to tandem is 1° up.

What truck do you have ?

 

[Bill in pa]

M35A2C quad cab.
Im thinking I need to lower the carrier bearing slightly.
To me that's my only option.
Being the engine/trans/transfer are factory positioned.
As is the rear axles
From what I have read, no angle should ever read "0".

 

[gringeltaube]

Im thinking I need to lower the carrier bearing slightly.
To me that's my only option.

Yes, it is also the easiest to give it a try and see if any changes/improvement, after that.
As a first step I would not exceed 1° between T-case and first portion of rear prop shaft. Ideally, this one should be like an "extension" of the TC output shaft and then the angle after the carrier bearing should be the same as the one at the first rear axle input.

 

[WillWagner]

If the rear of TRANS is up, look at the front mount. Was that moved when the cab was added to?

You DO know that these trucks vibrate, shimmy, wiggle all the time. How can you tell

 

[Bill in pa]

If the rear of TRANS is up, look at the front mount. Was that moved when the cab was added to?

You DO know that these trucks vibrate, shimmy, wiggle all the time. How can you tell

None of the mounting points were changed when the cab was stretched. The

 

[WillWagner]

No t-case....