Rear ring and pinion replacement

Okay, first off what rear end? If this is a half ton then you have four different ring gear sizes which I need to know and if it is a three quarter or one ton then it is different again. Now I must add you will need tools. You will need to be able to set the pinion preload and then you will need to be able to check back lash (with a dial micrometer) and read the marking compound. Also, be able to feel the crush sleeve and then torque it correctly. Also, be able to press the bearing off the old pinion to get the shims out from under it. You also need an insulation kit as you should not reuse the old bearings instead you bore them a little to use them to set it up before you press the new bearings on and such. Now if you go to Randy's ring and pinion and check the tech help and read the tips and how to's so you can see what I am referring to. Also, you can use their site to identify you rear end and get your parts. Let me know what you want to do and we can take it from there.

Okay, I will assume that you know how to take it apart so I will give you the instructions on installation. Now I do recommend that you use the old pinion bearing and hone it out so that is just fits the new pinion without having to press it on so you can set you pinion depth without pressing on and off the new bearing, once you have the right number of shims then put shims in place and press the new bearing on, make sense? If not let me know. Now here are the instruction to put it back together.
1) First set you pinion depth with a pinion depth gauge(see picture below) and side bearing preload (see picture below). You do this by using the shims that are on the old pinion and putting them on the new pinion and then use the old bearing as described above and check depth. If depth is good then using a bearing installer install the new bearing on until it is tight against the shims.
2) Install new crush sleeve onto pinion. Lube pinion bearings. Install pinion into the axle housing. Install the outer bearing into pinion using bearing installer. Hold the pinion in position from inside housing while driving bearing onto pinion. Install the pinion oil seal.
3) Install ring gear squarely into the differential case. Tighten ring gear bolts evenly and alternately to specifications (listed below). Ring gear bolts are left hand thread.
4) Lube ring gear and side gears with gear oil. Install left and right side gears and thrust washers into case as marked in disassembly. Install one spider gear into side gears and rotate until spiders are exactly opposite and rotate into place.
5) Verify shaft fits through both spiders and install thrust washers and install shaft. Install lock bolt and just snug it.
6) if side bearing were remove install side bearings.
7) Lube side bearings and install races. Install different case into housing install the spacers between race and housing as they were when you took it apart with the chambered edge of spacer against the housing. Install bearing caps and loosely tighten bolt so the diff can move without falling out set side bearing preload (specs below) and then tighten everything to specs if all checks good. Now use your marking grease and then rotate the differential and make sure that the pinion rides in the middle of the ring gear. You can also use Randy's ring and pinion web and click on tech tips for more tips and if you have any questions please just ask.

Pics PInion depth

Back lash

Back lash should be .005-.009.
Side bearing preload .008

Pinion preload twenty to twenty five inch pounds to rotate pinion.

Torque specifications.
Center pin lock bolt 27 lb ft
Ring gear to carrier bolts 90 lbft
side cap bolts 60 lbft
Pinion is set with the crush sleeve on rotating torque. so once pinion preload is set the pinion nut is at the right torque.