Firstly, this is a very difficult and advanced task. If your only mechanical experience includes the front brakes and some sway bar links, I wouldn't recommend trying this on your own. It requires alot of precise movement in alot of tight places, where the consequences of failure are an engine rebuild. You need to lay under the engine with oil dripping all over your face. It is not comfortable, it is not fun, it is not easy and it is not over quickly.

This tutorial closely follows the Hayne's manual for the replacement procedure of the Rear Main Seal for the 19872001 Jeep Cherokee and Jeep Comanche. By extension, the 4.0 is hardly any different across other Jeep vehicles, so most of the information here also applies to 19872006 Jeep Wranglers (YJ + TJ), and 19932004 Jeep Grand Cherokees (ZJ + WJ).

Any time you remove the oil pan, you'll need to replace the gasket.

TOOLS:
Socket set 8mm19mm
Deep Sockets: 13/16, ½, 7/16
Various wrenches
Torque wrench 7 75 ftlbs
Extensions, swivel joint
brass punch that closely matches this surface area of the RMS
Jack and stands
Cleaning Supplies
The Spare Tire Jack

CONSUMABLES and PARTS:
High Temperature Gasket Maker Anaerobic: https://www.amazon.com/Permatex51813...
Rear Main Seal (19871999): https://www.rockauto.com/en/moreinfo....
Rear Main Seal (20002006): https://www.rockauto.com/en/moreinfo....
Oil Pan Support Bracket (19992006): https://www.summitracing.com/parts/mo...
Oil Pan Gasket
Dish soap
Engine oil

00:00 Video Starts
00:04 Introduction
01:51 Tools Required
04:01 Oil Pan Removal Procedure
11:34 Main Bearing Cap and Upper Seal
17:39 Lower Seal 0006
20:13 Lower Seal 8799
21:07 Installation Procedure
26:10 Don't Forget to add oil!

This video primarily shows a 2001 XJ, but also features a 1987 MJ.

Music:    •     

This was the first time I've used Chapters in a video, let me know if they can be improved or if they help at all. Thank you all for watching and I wish you the best on the project