Driveline Vibration

[M32H32IS]

Thoughts on this vibration?

Starts @ 30”ish” mph under load & continues through 75 mph.

At 40 mph I apply light throttle to smooth out the vibration.

At speeds above 45, I let off the throttle to reduce the vibration.

Feels like it’s coming from the front but I’m not certain.

I hear clicks at times when taking off or stopping. Typically clicking stops by 10pm when taking off & starts around 10 mph when coasting to a stop.

Vibration increases with speed not engine RPM.

 

[M32H32IS]

Today I’m going through the following and hope to narrow down the culprit:

1) Remove rear tires and check EPB adjustment.

2) Rotate tires to see if vibration follows

3) Inspect all drivetrain components for visual wear and tightness.

 

[16FujiDisco]

Maybe a wheel out of balance? Could be carrier bearing/ prop shaft bearing, but that usually gets worse as speed increases

 

[M32H32IS]

I started inspecting brakes & wheel bearings. All seem good to go.

Front end has some play on passenger side from steering rack, but that was a prior issue and hasn’t worsened.

0 play in either CV up front.

Front driveshaft has 0 play.

Rear driveshaft has some play, could be due to carrier but I haven’t removed heat shield to inspect closely.

Rear CV’s have 0 play.

 

[theegovernor]

There us a tsb for vibration from the transfer case. The fix is to install a dampener.

 

[avslash]

Carrier bearing

 

[t3s1a]

1. Wheels balance
2. Check the front lower control arms. Worn/torn rear bushings are a common source of steering vibration, clanks, and vibration on light braking.
3. Missing damper on the transfer case will cause vibration between 2-3k rpm under load.

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[M32H32IS]

The bushing on the center carrier hearing isn’t separated but it is sagging considerably and there is play.

I’m guessing this is the culprit?

Ordering the JXB, hopefully it resolves the issue.