1 Ton Swap - Part 3 - Rear 14 Bolt Prep
Happy New Year
Continuing on the 1 ton swap, this next part will cover the rear in chronological order, even though again we worked on both axles off-and-on.
As with the front, the first thing to do was to strip away all the brackets & hardware from the rear.
One of the main aspects of ensuring we had the correct 14b variation was obviously axle width, but also this "ribbing" on the pumpkin which isn't always present:
Pulling the shafts, it really set in that I would finally have a full-float rear...
...but that I would also need to do something about the massive pumpkin.
So, once again, long evening of torching and grinding was ahead to get the axle stripped, although not nearly as much material to remove as the SD60.
With the axle down to bare metal, it was time to weld the truss on, which all other bracketry is keyed off-of in the Artec 1-ton swap kit.
As always, great welds outta R2. Looking in the cavity, you can see the pinion pilot bearing, which is another key features of the 14 bolt in addition to the 10.5" ring gear and full-float shafts.
With most things now in place it was time to work on the clearance. We went with the Ballistic Fabs shave kit. With the shaved diff cover on the axle, this gave us a visual indication as to how much clearance we would be gaining (2")
With the cover in place and a steady hand, the next step was to sawzall the material to be removed, effectively "scalping" the bottom of the diff cover.
The shave kit comes with a new replacement plate to weld to the diff after the shave. With the bottom plate bolted to the diff cover, we slowly ground down the remaining way to ensure we didn't overdo things and create too much of a gap.
After that, it was time to weld, but first we needed to bring the cast steel up to proper temperature.
After quickly-but-carefully welding the bottom plate on, the axle was wrapped to ensure a slow, even cool-down.
The last thing that needed to be done was to have the Ring Gear machined down slightly to clear the new bottom. Ballistic Fabs had turned down the ring gear, but unfortunately not quite enough as it was still touching:
So away it went to get turned a bit more, but we got it back ready to rock and installed it and a new Grizzly Locker (not shown) from Yukon before setting up the gears.
Paired with a set of 4340 rear shafts, the axle would appear to be close to complete after things were painted, but there was quite a bit more doing to get the axle set up to run under a Jeep!