Dd re-gear fail/pattern check

[slow600]

05 Lj with d44 rear. Got frustrated and said fukit after many many attempts, slapped it together with fresh lube and a prayer. Surprisingly low noise, mainly high pitched whine at 50mph at part throttle or unloading the rear. Negligible noise under power or decal above/below that speed.

Need to pull the cover to be sure, but no disco glitter seen through the fill hole. Backlash .007, don’t remember my pinion depth. Started with factory shim under pinion bearing, all subsequent adjustments were under inner race.

Where would you start next if you were a da like me? Pattern was getting better the deeper pinion went (I think), but ran out of shims to get pinion preload where it needed to be. Was set at 14 in lbs.

 

[NDCjeepsmith]

Is that before you ran it or currently after running it? How many miles?

It looks way deep to me but your transfer is shit... do yourself and anyone else that you're asking for help a favor, and thin out your compound with a couple drops of gear oil. You do not need to slather that shit on.

Hell I'll use one of those white tube's for 4 different installs, you don't need much.

Also run the pinion with a drill, forward and reverse... AND apply pressure to the ring gear while it's spinning, that helps tremendously with pattern lay in and will also make a ghost pattern on the unpainted teeth which sometimes will tell a better story of what's going on.

 

[slow600]

this is before driving, going to pull cover this weekend.

will thin down my compound more, i did apply pressure with my hand holding a leather glove. not sure if this is enough or not.

 

[NDCjeepsmith]

this is before driving, going to pull cover this weekend.

will thin down my compound more, i did apply pressure with my hand holding a leather glove. not sure if this is enough or not.

How much has it been driven? Miles?

It's not like you gotta put your whole body weight on it, just some drag.

What gear brand and ratio? OEM pinion shim is a great starting point. Yukon and revolution I've had to adjust no more than 6 thou from factory.

14 for pinion preload is too loose, you'll end up letting the pinion walk which will destroy the gear set.

I'm assuming the pinion preload was checked with nothing else installed, just the pinion and carrier?

 

[slow600]

ive put a few hundred miles on it so far #smart. richmond gear in 4.56 flavor, i did start with oem shims and most likely went wrong from there. i did check preload sans seal.

where is sw mo are ya? im in clever 65631

 

[NDCjeepsmith]

Just outside of Joplin.

 

[NDCjeepsmith]

A few hundred shouldn't destroy them if it's out too far.... although the first two heat cycles are the most important for break in and thats within the first hour of driving.

You may always have noise now. Sometimes you just do tho.