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This pretty much works for all vehicles that have ball joints.
When you're ready to install the ball joints on your axle, especially the uppers, install the grease fitting into the ball joint FIRST, then mark the direction the fitting is pointing with a permanent marker. Then remove the grease fitting, and install the ball joint with the mark pointing the direction you'd like to grease it. That way it'll be installed the right way, without having to overtighten or leave it looser than you'd like.
That may or may not work on these trucks. When the alignment guy goes to turn the eccentric around the joint, The joint might move with the eccentric, messing up which way your grease fitting is pointing.
The eccentric goes around the stem of the ball-joint, the grease zerk is in the cup of the ball-joint and is pressed into the traction beam. So I don't see how an alignment tech rotating the eccentric could possibly move the cup and the grease zerk that screws into it.
I just did my balljoints and I was able to line up the zerks for easy accessibility and press them in with the zerks installed and pointed in the right direction. easy peasy
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