There was some discussion earlier in the week about a greasable centering ball in the front drive shaft's double cardan joint. I told Anarchy I would post later with some info.
Below are two pics, the one showing an exploded view of the CV (double cardan) joint with all of the necessary components. Please note where the grease fitting is and where the plug in the back of the centering ball yoke should be (if needed). On my '98 the plug was not there, leaving the centering ball to lose it's grease and allowing dirt, moisture, and grit to get in.
I had to install a 1/8" NPT socket head pipe plug into the existing hole (after threading it) and drilled and tapped a 10-32 hole for the mini grease fitting as shown in the other pic.
You can buy these ready made centering ball yokes from NEAPCO or any other driveline company complete with the grease fitting.
It sure makes it easier to lubricate that front drive shaft now that everything has a fitting.
Just passing on the info .....
98 JGC Pearl Amesthyst,I6 Select Trac,front tow hooks,rear shackle, mopar skids, rear trac loc, westin safari bar, mopar bug deflector, greasable U-Joints all around, class IV trailer hitch, K&N drop in, more to come ....