I installed an OME 2.5' lift and got the well documented slight "grinding" sound on deceleration. It only occurs in 4 wheel drive, so is something in the front end. It is louder when the hubs are not locked. My local mechanic took a hard look and replaced one of the u-joints, and tightened up the nut on the front transfer output shaft. But it didn't fix the noise. Further investigation found oil leaking from the auto transmission to the transfer case, so it appears the seal is gone. There is no apparent play in the bearing on the front output shaft. The drive shaft was not removed, so is not "out of phase" or other potential issues.
So, we likely need to replace the transmission/transfer case seal to address the leak. And its possible the front output shaft bearing is contributing to the noise (not sure though). He has looked at the service manual and is looking for more info on how to replace that seal between transmission and transfer case. He's a great mechanic but not familiar with these split case units.
Is it best to remove the transmission and transfer case to get at the seal, or to pull apart the transfer case while on the truck? Is there any detailed description on how to get at the seal? Its not super clear in the manual and the posts I've seen don't really cover that seal. Pics would be amazing....
And.....while he's in there, is it best to just rebuild everything (bearings, seals) or just the parts that appear worn? It sounds to me like the labor of getting the TC apart is the biggest part of the job.
FWIW, the truck has 157,000 km and otherwise in good shape.
Any info is appreciated.
So, we likely need to replace the transmission/transfer case seal to address the leak. And its possible the front output shaft bearing is contributing to the noise (not sure though). He has looked at the service manual and is looking for more info on how to replace that seal between transmission and transfer case. He's a great mechanic but not familiar with these split case units.
Is it best to remove the transmission and transfer case to get at the seal, or to pull apart the transfer case while on the truck? Is there any detailed description on how to get at the seal? Its not super clear in the manual and the posts I've seen don't really cover that seal. Pics would be amazing....
And.....while he's in there, is it best to just rebuild everything (bearings, seals) or just the parts that appear worn? It sounds to me like the labor of getting the TC apart is the biggest part of the job.
FWIW, the truck has 157,000 km and otherwise in good shape.
Any info is appreciated.