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And now the bearings. I wiped as much grease off as I can. I use a Dremel cut off wheel and cut the outer cage.
Once cut, I pry the outer cage off, remove the rollers, and the brake backing plate.
After that, inner bearing race time. Same as the lock ring, this inner race is under a...
Moved the axle shafts on to the bench to start carefully cleaning the old sealant off the brake backing plates.
Came out well. Very fiddly doing this with the bearing in the way. No way to remove the bearings without destroying them. And, you don't want all this crap in the grease.
And...
More fun, time to install the differential carrier into the axle housing.
I suspected the old carrier bearings were probably worn when I initially removed the carrier from the housing. It did not fall out, but I was able to snatch it out with my hands. With good bearings you usually need to...
Time to install the pinion yoke and set the pinion bearing preload. A few words from the FSM. NOTE - These numbers are for the pinion ONLY, before you install the differential/ring gear. This is pinion ONLY rotating torque.
Tool I use to check the rotating torque, 1/4" drive torque wrench...
At this point I stop, remove the old yoke and nut. The pinion will NOT fall out of the axle housing because the outer bearing is now pressed into place. I installed the new pinion oil seal now that the pinion is installed.
Stopped here for the day. The next part is the most fiddly -...
Pressing the new differential carrier bearings on.
Keeping the races correctly oriented. Probably does not matter since both bearings are identical and new, but good practice.
Finally feel like I'm getting somewhere, two subassemblies ready to go.
My box of press tools. Mostly old...
Used my large two jaw puller and bearing splitter, removed both old differential carrier bearings.
Kind of neat how the part number from the original bearing was etched into the side of the carrier!
Unfortunately my two jaw puller is not long enough to remove the inner pinion bearing...
Alright, now the fun part. The FSM references special tools that don't exist to reassemble all this stuff inside the differential case. The FSM is of no use. I watched a video from IIRC Yukon or Randy's Ring and Pinion, a bit better, but they also use special tools. I watched a 30 minute video...
The Bellevue spring goes on the side gear first, bevel facing the differential case side.
The two types of disc's. They just stack up on top of the Bellevue washers in an alternating pattern.
Picture from the FSM.
New Bellville washer and clutch stack on left, old stuff on right. You...
Cleaning and inspecting parts.
Back sides of spider gears and thrust washers look and feel fine, no scratches, gouges, etc.
All these little teeth on the back side of the side gears look good.
None of the clutch discs were burnt or cracked.
But, if you look closely, the little teeth...
Got some more work completed today. Started on disassembling the Trac Lok.
Two clips on this shaft, two screwdrivers and a hammer will take them off. Be careful, they will go flying off!!
With a 3.31 ratio I did not have to remove the ring gear from the carrier, the cross shaft easily...
Started cleaning parts.
Make sure you keep these on the correct sides!!!
Axle housing cleaned.
Round one cleaning complete on these parts. Will finalize cleaning and inspection once more disassembly is completed on these components.
And new parts.
New differential carrier and...
Even with the pinion a hair loose (only loose if you pull on it) I wanted to check the ring and pinion back lash, for a base line. So, generally, if you are only changing bearings, the original shims should be fine. But, never hurts to check.
What the FSM says, 5-10 with 8 thousandths...
Quick history lesson. I purchased this Scrambler back around April 2009, about 116k miles on it. It had a pretty good rear pinion oil seal leak. Way back in 2009 I took it to my ring and pinion/driveshaft guy to install a new pinion seal. He installed a new seal but also advised me the bearings...
Quick maintenance summary for my own benefit.
April 2009, 116k miles - purchased
May 2012, mileage not noted - Moser one piece axles installed
December 2012, 120k miles - general mileage note
January to September 2017, mileage not noted - engine rebuilt by Hesco, Mopar MPI added, rebuilt T5...
Red Scrambler. Bed loaded with tools, spare parts, camping stuff for Michigan. BUT weight in bed no more then 400 pounds of cargo. 20 gallon tank full.
Scrambler weight inducing add ons:
Front winch
Rear bumper tire carrier
Rock sliders
Gen Right gas tank skid plate
Rock Hard in cab cage
1/2...
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