Some of you may remember I re-geared my 2011 (auto) JKU to 4.88's and added ARB lockers up front (already had lsd in the rear) at TeraFlex Plus. Yes, I properly broke the new gears in, then had them change out the gear oil.
About 3 months later, and a couple of states away (had it done at TeraFlex Plus in Murray, Utah. Am now in north county San Diego, CA until the fall...) I'm hearing a whirring noise. Took it to my mechanic, who diagnosed at least pinion gear bearings are shot. The rear diff fluid was FULL of metal shavings... He recommended I take it to Jerry at Oceanside Driveline.
When the folks at TeraFlex Plus did the re-gear, they chose to not instal new pinion gear bearings, stating mine were perfect.
3 mechanics have now told me that there is only one reason for my bearings to fail this soon. There are two ways to set up a re-gear.
1) Using new bearings -
2) Re-using the original bearings.
In the second case, the bearings can not be tightened as much as if they were new. And so - they must have set the system up as if they used all new parts, tightening them too much.
Now, my jeep is at Oceanside Driveline... and apart. The front is good.
The rear is thrashed, including the ring and pinion gears, all bearings, the lsd is chewed up and carrier bearings too. The entire rear end is having to be rebuilt. Ouch!
Driving it back to Utah was not an option. Too far. Too much damage already. Wouldn't have made it
I put a couple of calls in to one of the service fellows, to let them know the predicament I'm in, and get specifics on the re-gear (double checking my facts). I've emailed TeraFlex Plus (Dennis Wood is the service manager) yesterday. And I've sending a hard copy letter today. Haven't heard anything from the email as yet...
Will keep you posted as to the outcome.
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