Finally got around to swapping in my durango steering box today. Overall I'm impressed but it could be because my other one was junk. It bolts up without a hitch. Same bolt pattern just a wider box. 3 full turns lock to lock. To do this you will need...
A steering gear box from a 99 Durango 5.2L
Pitman arm puller
1 and 5/16" socket
ft/lbs torque wrench
power steering fluid
Jack and stands
Steering gear to frame: 65 ft/lbs
Pitman arms to shaft: 185 ft/lbs
Stabilizer bar to frame: 55 ft/lbs
Stabilizer bar to link: 27 ft/lbs
Center link to pitman arms: 55 ft lbs
Start by Jacking up the front axle and getting the wheels off of the ground. Then secure jackstands under the vehicle.
Then remove the cotter pin on the castle nut holding the draglink to the pitman arm, followed by removing the castle nut.
Then drop the draglink from the pitman arm by using a pickle fork.
If you have sway bar disconnects, disco them and pull them down to swing the antisway bar out of the way of the pitman arm nut. If not then you must drop the swaybar by removing the mounting bolts.
Remove the nut and washer from the pitman arm.
Remove the pitman arm using a puller
Position a drain pan under the steering box then remove the power steering lines going into the steering box, then allow it to drain.
Remove the sheild going over the steering shaft behind the steering box by removing the 13mm bolt holding it on. Then rotate the steering shaft until you can see the other 13mm bolt at the joint on the input shaft on the box. Remove the 13mm bolt and slide the steering shaft back and out of the way of the box.
Remove the 3 mounting bolts for the steering box from the uniframe rail. Make sure you have a hold on the box as you remove the last bolt. Lower the box and pull it out.
Now you have the two next to eachother.
Reinstall everything in reverse. When reattaching the steering shafts collar to the input shaft of the box it was a tight fit for me. I jammed a flathead in the crack in the collar to open the gap up a bit so I could slide it on. Not sure why it didnt line up for me. Maybe a different spline count? Make sure you bottom out the steering shaft and drop in the 13mm bolt.
Once everything is installed and torqued down you then add fluid to the steering box. Turn the wheels from lock to lock with the front end still off the ground. Do this for a few times and check the fluid level. I had to do this for about 10mins to get out all of the air. Dont overfill the reservoir. If you do, pull out the excess with a turkey baster. After you burp the system for a bit and dont see the fluid burping up in the reservoir then start the vehicle. Turn lock to lock for a bit more just to make sure no air is left in the lines. Drop the vehicle off the jackstands and check the fluid level once more. Take her for a drive and see how it goes.