Ring\Pinion

[backwoodsLJ]

Put new 4.56 ring and pinion in the XJ yesterday and a locker.Would like to know what some have done as far as breaking in the gears.This is what I found for advise!
Insure axle is filled with high quality hypoid gear lubricant, minimum GL5 rating, and any required additive.
Drive the vehicle under light load for 20 miles.
Stop and let the differential cool completely, at least 30-60 minutes.
Drive 500 easy miles at varying speeds and light loads.
Change gear oil and any additive.
Any opinons would be great!
The back axle gears were already in the axle I bought so no break-in needed...

[Creepy]

yep.

what were your backlash measurements? how did the pattern look?

[backwoodsLJ]

I believe 0.006" on backlash.Had a budy who has done many gears installs.We had carrier out many times and used old bearings for set up bearings.Pattern looks good.I'm keeping my fingers cross.XJ has been in garage since last fall and getting real itchy to get out and wheel.Looking to do a trail next saturday?

[rue]

If the rears were used and the fronts are new,I'd just run them.I've put new gears in the buggies before and didn't do anything to break them in,Just beat on them...LOL they looked good after a year of abuse.

Rue

[backwoodsLJ]

This is what I'm hearing from the local crowd,just go wheel it.Have a few dollars invested in the front and did'nt want to f-it up! So thought I'd ask fellow jeepers.... ;D

[90bronco]

Thanks for backing me up Rue
You can break them in Saturday Darren .

[justajeep]

Driving on the road isn't going to do much to break them in anyway, no load on them in 2wd! Sounds like they were set up good, so nothing to worry about.