Does anyone have any good ideas how to remove the pinion bearing races from the D44a? No suprise they are stuck since it's aluminum/ steel and they tend to stick together like superglue
I tried heating the race/ pumpkin and then pound them out, but the races wouldn't move. After two hours I gave up. Front HPD30 races came out in about 5 seconds each.
I was wondering if I could ie. heat up the races by welding a bead onto the races, then trying again? I just can't remember the thermal expansion rates of steel and aluminum, if steel expands more then there's probably no point in doing that. I hate that aluminum housing!
After getting fed up with the rear axle I moved on to the front axle.
Started out by boxing in the pass. side UCA mount with 1/4" plate. The bushing heated up so much I was actually able to press it out using a 2- jaw puller and a thick washer that happened to be just the correct size. Even the steel surrounding came out!
Because of the 1.5" WB stretch in the front, my coils weren't in the ideal location, especially so @ full bump. I also hate the sound they make now. So I cut off the stock coil buckets, cleaned them up a little, cut two 7" long pieces of 4" x 2" (.188" wall), notched them, burned in the coil buckets, and then burned them to the axle.
Coils are now @ stock location and axle is 1.5" forward, should have no problems anymore. I also added ~½" lift to the buckets. Shock mounts will be done tomorrow or next week.
The donor Jeep (1999 XJ with only 40k miles!) I bought the front HPD30 from was rolled over at relatively slow speed. However, knowing the crappy stock LCA mounts they were bent. I first tried straightening them - unsuccesfully. They ended up being diamond- shaped
I decided not to try anymore, instead cut them off and fabbed new, much beefier LCA mounts from 1/4" plate and burned them in. These are not finished, they will get a plate welded in between the two halves and the axletube (sort of miniskids looking from the front):
1998 Grand Cherokee 5.9 LX daily driver, 1.75" BB, 32" KM2s, HPD30 Eaton e-locker/D44a stock LSD, 4.56 gears, custom- fabbed tube bumpers and tube fenders,...
1990 XJ Limited (4-door), 4.0 I6, AW4, NP242, ***rolled and totalled @ 165k miles***
1990 XJ (4-door), 4.0 I6, AW4, NP242, PBR 42" tires, Unimog 404 portal axles, 110" WB, full cage + uniframe completely rebuilt, front 3-link + panhard / double triangulated 4-link rear,... ***SOLD***