chris092183

iTrader: (1)

Man I cant say how much I hate installing rearends. I think it's because the lack of info on the yukon instructions I have. This is my first time so I need exact step by step instructions. Anyway, anybody have trouble with the crush sleeve? I can't get my pinion preload correct because my impact is a cheap craftsman. On the yukon gear install manual it said that you might have to put 3-400ft/lbs of pressure. I believe I should be over that because I have about 3' length with the cheater bar and I can bench around 345 but using only one hand would bring that down to about 170. Isn't the rule for cheater bars: 1'=100ft/lbs?so what gives? Both pinion races are fully seated, I pressed the bigger of the two pinion bearings all the way on the pinion. I placed the pinion inside the diff with the large bearing and crush sleeve then from the other side I put on the smaller bearing, yoke, washer then pinion nut. I left off the seal as i didn't want it to get damaged.
FYI I had to install the carrier so I could put my axles in in order to use my brakes. I didn't have enough leverage with the pipe wrench nor did I have a good grip on both toke pinion nut.

blown02408

iTrader: (4)

I feel your pain! I just did a front and rear gear swap on a 09 Jeep CJ it took heating the crush sleeve up and slaming everything back together then throwing some lube on the threads and having at it with the biggest 1/2 inch IR impact we had. I think it is advertized at 580 ft/lbs forward 780 ft/lbs reverse torque!!! Did I mention the compressor was set at 150psi.

budhayes3

iTrader: (19)

Here's a good gear swap write-up that axisT6 made for us, hope this helps:

https://www.performancetrucks.net/fo...d.php?t=460061

Rhino79

iTrader: (7)

I just did my gear swap, used my 18v cordless snap-on impact, worked like a champ. It did have to hammer for a few seconds tho!

chris092183

iTrader: (1)

Thanks Bud but there wasn't anything on axis' thread that went more into depth about the crush sleeve.

TXsilverado

iTrader: (19)

sometimes the crush sleeve can be a pita. just give it hell. once you get it started it will get easier. i good impact usually makes it easier.

TurboGibbs

iTrader: (6)

I have broken a breaker bar on them before. I have reused many crush sleeves for this reason. I would peen it with a hammer on the gear shaft to flatten it out a hair and install. Several rear ends in high hp applications have survived this.

chris092183

iTrader: (1)

what is the purpose of the crush sleeve anyway? Can I just use my old one if i can't get this bastard to crush?

6789olds

the crush sleeve lets you tightin your pinion nut with out pre loading the pinion bearing too much . it also holds pre load on them . no you can not use the old one the preload is measured in roatating friction . not torque on the nut . once the crush sleeve starts to crush you need to measure how much "inch pounds" it takes to get the yoke to rotate . i beleive its like 20 inch pounds . so with no load on the rear end when you spin the yoke it should have slight drag 20 inch pounds this is without the carerer in the housing . kinda like doing a wheel bearing. lube up the crush sleeve put a 48 inch pipe wrench on the yoke to hold it then i use a 3/4 inch drive breaker and a 4 foot jack handle cheater .

blown02408

iTrader: (4)

How do you get a 4' long wrench under a truck on jackstands and turn it....lol!