OK, believe me or not -
There is no bearing inside of the oil pump drive assembly (at least on a 2006 LJ 4.0) AND timing the engine - even if you lose your marks or the engine moves position - does not require anything but a little trial and error (unless I got freakishly lucky).
Ask me how I know…..
So my Jeep started squealing like a stuck pig Sat Morning. I remembered this thread from some time back ( love wasting time on JF, saves soo much money…) and knew it was the oil pump drive "bearing." Called local Chysler dealer, she gave me a part number and said thet there was not one in a dealership for 400 miles. NAPA same story. Found a dealer in Kansas that had one, he shipped it to me….all is well so far.
Follow my trusty JF write up, remove the old part. Hmmm resembles the new part but is clearly not a match, no way to make it work. Rather pssd decided to disassemble the one that came off… punched out roller pin, took shaft out…………….. NO BEARINGS. The shaft spins in 2 metal bushings, a top one and a bottom one. So I cleaned and greased the shaft (there was a ring of "stuff" towards the top end of the shaft that must have been making the noise) and put it back together. Lesson 1. No bearing, don’t buy a new part until you take yours apart clean it and try it again. Mine has not made a peep since reassembly.
Tried to put it back in correctly, did not. Thought I had it seated and I did have the marks lined up - tightened it down fired it off: start sputter die damn. Did not get it seated originally, it seated when I started it, in the wrong timing. Now I have lost the reference marks (i.e., the engine is in a different position than before) and think I am up a creek. BUT - similarly to an old distributer, you can turn the housing in increments and then try to start the motor…3rd time she fired and ran perfectly. So far soo good (drove 40 miles today). Seems to be in perfect time? So I guess lesson 2 is pay attention and follow the directions so you get it back on correctly….
Any chance it is not in perfect time? Sounds perfect, power is fine, idles fine?
Sorry for the longwinded post - but if I wasted your time it is your fault for reading it!!
And there is no bearing!!!!
77 CJ5 - Sold; 05 Built KJ CRD - sold; 80 Built CJ7; 06 Silver TJ Unlimited SoftTop - OME N66/67, 934/949 - etc. - and a big black lab in the back