I just got back from a few weeks of offroading and was experiencing a vibration up around 70 mph. I had to service the double cardon on the front propshaft anyway, and inspected it in the process. U-joints looked good. Everything in order there, same with the rear drive shaft and Rotoflex.
I did find a nasty bit of lash in the front pinion and off the transfer case. Here's a video of what I am getting...
Lash - YouTube
The play in that front pinion looks just a tad bit excessive. I have a new set of 4.11 gears and bearings that will be going in asap so I am not as concerned about it. The play on the transfer case front output shaft I am mostly curious about. It too seems excessive, however I have never tested the play in that before so I am not certain what is normal and what is not. In reviewing the workshop manual this appears to have a roller bearing so I would expect that there should be some play there. If so, how much relative to what we are seeing in the video?
Any feedback here is welcome. I've got a fair bit of drivetrain work lined up for the vehicle over the next month or two...I'm about to put in a 3" lift, replace the rear rotoflex with a U-joint and install a double cardon rear drive shaft, and lastly install 4.11 gears front and rear and replace the TrueTracs with Ashcroft air lockers....So with all that happening I'm not adverse to getting into the T-case if need be. But I'm just not sure if that amount of play is normal.
Also worth noting the vehicle has 54000 miles. The last 15k includes some pretty aggressive wheeling though.
I did find a nasty bit of lash in the front pinion and off the transfer case. Here's a video of what I am getting...
Lash - YouTube
The play in that front pinion looks just a tad bit excessive. I have a new set of 4.11 gears and bearings that will be going in asap so I am not as concerned about it. The play on the transfer case front output shaft I am mostly curious about. It too seems excessive, however I have never tested the play in that before so I am not certain what is normal and what is not. In reviewing the workshop manual this appears to have a roller bearing so I would expect that there should be some play there. If so, how much relative to what we are seeing in the video?
Any feedback here is welcome. I've got a fair bit of drivetrain work lined up for the vehicle over the next month or two...I'm about to put in a 3" lift, replace the rear rotoflex with a U-joint and install a double cardon rear drive shaft, and lastly install 4.11 gears front and rear and replace the TrueTracs with Ashcroft air lockers....So with all that happening I'm not adverse to getting into the T-case if need be. But I'm just not sure if that amount of play is normal.
Also worth noting the vehicle has 54000 miles. The last 15k includes some pretty aggressive wheeling though.