First unplug this connector:
Now, you can remove the steering wheel center nut. IIRC this is a 19mm nut. You'll need an extension to get a decent sized ratchet to clear the steering wheel, I used about an 8 inch extender and it was perfect. If you have an impact you can get it right off, I didn't have one so I had to have a friend hold the steering wheel steady while I broke the nut loose.
Now you will need the steering wheel puller:
Before you start using this, take some white out or something similar and mark where the steering wheel meets the center threaded shaft, so when you reassemble you can put it on straight. I found you don't have to be crazy accurate with this since you'll be be putting the steering wheel back on straight anyway, so you'll know what "angle" to put the wheel back on.
I forgot to take pictures of me actually using the puller, but I can describe it to you:
While the unit is "assembled" like the pictures show, you need to screw the silver bolts into these two holes:
Mine didn't fit that well, you only need to screw them in a turn or so for them to catch enough to use the puller. When they are snug, tighten down the black center bolt into the center of the steering wheel threaded shaft.. The little black collar in the puller box goes around the bottom of the black center bolt to help keep it centered as you tighten. As you tighten, the steering wheel will pop off. As you remove it, ensure that the cruise control and airbag sensor wires do not snag as you pull them through the steering wheel.
After the steering wheel is off, you'll need to undo these bolts to remove the whole plastic assembly:
Once that is off, you can remove the cruise control bracket, which is these two screws:
Then you will have to remove this black unit by removing these screws:
Congratulations, you can now start reassembling with your new steering wheel you want to install. Thanks once again to jserrano for the good condition leather SE steering wheel.
Start by reinstalling that black unit. Then reinstall the cruise control metal bracket. After that, reinstall the large plastic assembly. Don't forget to re-attach the horn button connectors. I decided to disassemble the horn buttons and clean the contacts to ensure they would work properly for a long time. I had problems with the buttons on my previous steering wheel. I had to push them just the right way to get them to activate.
When you reinstall the steering wheel onto the hub, you need to start by turning the rotating hub assembly. You need to turn the assembly clockwise until it stops. Do not use force, it will stop easily on it's own. Then you need to turn it back counter clockwise a certain number of turns before you put the steering wheel on. This part is where some people may need some clarification. In the haynes manual, it told me to twist the assembly back 2.5 turns before installing the steering wheel, on the actual twisting assembly, it told me to twist it 4 times back before installing the wheel. Since in my experience the assembly only turned clockwise about 3 turns before stopping, I decided to only turn it back about 2.5 turns because I thought 4 turns would turn it back too far, possibly causing it to break when I turned the wheel hard over to the left. When you turn it back, you need to turn it back a little less than 3 turns counterclockwise until the white pin aligns with the arrow which is at the direct bottom of the assembly. I forgot to take a picture of the spinning assembly directly, but this is what it looks like:
As you install the wheel, make sure you correctly align the splines, do not just force the wheel on. As you install it, pull the airbag connector and cruise control wires through the hole in the steering wheel. Move it around and slightly left and right until it aligns with the splines it was removed from (this is where your mark and keeping the wheel straight comes in handy). Tuck the wires down into their clips and try to keep them neatly wired and not twisted around. Now you can reinstall the airbag. I actually had some problems with this. My airbag sat way over to the left with a huge gap to the right between it and the steering wheel. I had to dremel the mounting holes of the airbag out to be able to push the airbag in furthur before securing the bolts. I believe this is probably related to variations in altima assembly. However, after reaming out the holes a little bit, I was able to get the airbag to fit well without a large gap to the right.
Other than these issues, reassembly is completely the opposite of dissasembly. Make sure you torque down the center nut to appropriate specs (22 to 29 ft lbs). Also, make sure you torque the airbag tamper proof torx bolts down to the correct specs too (132 to 216 inch