Front diff, rear diff, T case oil change
 

so Im going to take this on today, the diffs seem simple enough but I had 2 questions

1. I want new bolts, thread size? bolt size? certain stress rating? # per diff.

2. what oil do you recomend? and how much per diff


then, Im less confident about the t case a couple questions

1. what kind of oil? how much?

2. how to drain? I saw a thread once but didnt understand iot clearly. anything to lube?

thanks guys

[QUOTE=Troth;477111]so Im going to take this on today, the diffs seem simple enough but I had 2 questions

1. I want new bolts, thread size? bolt size? certain stress rating? # per diff.

2. what oil do you recomend? and how much per diff


then, Im less confident about the t case a couple questions

1. what kind of oil? how much?

2. how to drain? I saw a thread once but didnt understand iot clearly. anything to lube?

thanks guys[/QUOTE
my transfer case was just ATF, drained from the bottom and filled from the top until ift came out the hole...the diffs are the same...I used 75-90W in both and took the covers off...cleaned them and then filled until it leaked out the hole...done.

for my diffs i use 75/90 synthetic but i am also running gears and stuff.

fist step, crack open a cold one.

then, for the diffs, remove all bolts but leave the top one in and loose. then with a mallet, tap the side of the diff until it breaks free. the top bolt will keep the fluid from pouring all over the place. just be sure to have the catch pan below the diff. once most of the fluid is out, remove cover.
then clean both mating surfaces with a gasket scraper being careful not to gouge. u can use a drill with a wire wheel.
if you wanted to paint the cover, now is the time.

then use brake cleaner to clean out the insides good. check to see if you have clutch discs (LSD) in the carrier or spider gears. also inspect the ring gear teeth for damage.
use rags to clean out all brake cleaner.

then use some RTV sealant around the diff, be sure to go around the bolt holes. then leave for about 5 minutes, then reinstall cover and tighten bolts in a criss-cross pattern, just a bit past tight. snug. (think it's 25-30 lb/ft).

then if you have LSD, put in the additive then fill up to the hole with either 75 or 80W90 gear oil till it starts to overflow out the fill hole.

the front is the same procedure, just no LSD additive.

transfer case is simple, bottom plug is drain, top is fill. use auto transmission fluid, dexron III or mercon. same as you would use on an aw4 xj auto tranny.

clean up and finish your beer.

Excellent write-up! For clarification, which additive are you referring to in regards to LSD's?

And why doe he only get one beer?

Screw it...
Lets just make it a party!
:cheers::cheers::cheers::cheers::cheers::cheers:

Its called safety... if you give him too many beers he won't get done... and then when he sobers up he won't remember that he never finished and drive off without having lube either the diffs or T-case....


BTW.. to the OP... Do you tow trailers or haul heavy loads with your Jeep?

^yup, that's right. gotta be sober so you remember the process.
or you can get your neighbor to come over and do it while you drink the beers. just as long as somebody's sober enough to remember.

haha thanks guys!

side note: I installed a labaron vent in my hood. stay tuned to fabrication today for the thread!