Unfortunately, the engine must be removed to remove the crankshaft and replace the main bearings.
Here are the step by step directions to help you out:
NOTE: To remove the crankshaft from the engine, the engine must be removed from the vehicle.
CAUTION: The bedplate to cylinder block mating surface is a critical sealing surface. Do not pry on or damage this surface in anyway.
NOTE: The bedplate contains the lower main bearing halves. Use care when handling bedplate as not to drop or damage bearing halves. Installing main bearing halves in the wrong position will cause sever damage to the crankshaft.
NOTE: The bedplate has pry points cast into it. Use these points only. The pry points are on both the left and right sides, only the left side is shown.
CAUTION: When removing the crankshaft, use care not to damage bearing surfaces on the crankshaft.
NOTE: Thoroughly inspect the connecting rod bearing bores and main bearing bores for scoring, blueing or severe scratches. Further disassembly may be required.
If connecting rod bearing bores show damage, the cylinder heads must be removed to service the piston and rod assemblies. If the bedplate or the cylinder block main bearing bores show damage the engine must be replaced.
I hope this helps! Let me know if you have any more questions!
The best manual would be the one from the Jeep parts department.
It will be expensive, but very comprehensive.
Your next best ption is to get a generic one from an auto parts store (chilton, haynes, etc...). These manuals will be less comprehensive but they will help.
If you need anything specific, just let me know and I will see if I can get it for you so you dont need to buy a manual.
Let me know if you need anything!
I am going to need something that obviously has torque specs disassmbly and assembly procedures. I have found a manual realtively inexpensive for a 5.2 that has alot of pertinent info are they the same basic engine paltform or not? Would any jeep dealer have this in stock or would it need to be ordered. I want to do this right. I have also discovered that this is a ongoing problem with these motors. Oil sludging up and then severe motor damage as a result. Is there something than can be done to help the oiling system some special machine work like cross drilling the crank and honing out oil passages etc. or are there any aftermarket items from mopar or direct connection that would help. My main concern is all the sensors and wires and sending units what to remove and not remove during R & R process. Thank i look forward to your reply any additional info would be appreciated to make this a smooth transition. Also once I star this project is there a way to contact you direct through this service so that i am not having to refresh the situation with someone new all the time.
First of all, you just need to reply to this and I will be notified to respond.
With regards XXXXX XXXXX manuals, I would stick with the 4.7 manual, not the 5.2. They are similar, but I would not trust all the torque specs.
With regards XXXXX XXXXX oil buildup problems, I would just make sure to change the oil every 2K-3K miles once the engine is in to prevent any sludge issues.
You will need to call the local Jeep/Chrysler/Dodge parts department to see if they have a manual in stock for your Jeep.
Let me know of any questions you have along the way!