Topic: new gear break in

[tom415]

So im currently working on installing a set of yukon 5.29s in my 84 toy and the contact on there site dident work so i thought you guys would no. In the instruction booklet that came with the gears it says to drive the gears for 500 miles before towing with them so i am assuming its the same for wheeling right? and also if i do have to break them in for that  many miles how do i put those miles on the front end?

[-Matt-]

i wouldn't worry about it as long as yours gears are setup pretty close to specs. those are just the desirable conditions for breaking gears in. just be somewhat easy on them until they begin to mesh better and bearings fully break in.

[tom415 [OP]]

ok thanks thats what i was hoping people would say because 500 miles is alot of time for me at least

[Axled89s]

not too much to worry about in the front..  I still change my oil after the first couple of whelling trips though

[79coyotefrg]

So im currently working on installing a set of yukon 5.29s in my 84 toy and the contact on there site dident work so i thought you guys would no. In the instruction booklet that came with the gears it says to drive the gears for 500 miles before towing with them so i am assuming its the same for wheeling right? and also if i do have to break them in for that  many miles how do i put those miles on the front end?

dude, its all about the heat cycle,

drive it 5 miles, then ten, let it cool completely,  then drive again,  do this over and over, its not hard, "oh i need to go to walmart,  (5 miles away) spend some time selecting your items, then your cooled and can drive again

[axled89]

good info.   when i did mine it was the same qeustion??

[tom415 [OP]]

all right guys thanks for the info 

[Volcom]

When I built my 4Runner 3 years ago, I made a couple heat up and cool down runs on the diffs, loaded it on a trailer, and headed to Moab for a week    Still running the same diffs and the last 2 years have been on 40's.