OverlandZJ
Expedition Leader
dieck said:Thanks. Anybody have a picture of this? I'm having a hard time understanding where this is...![]()
Here ya go, note the dimple at end of screwdriver.

dieck said:Thanks. Anybody have a picture of this? I'm having a hard time understanding where this is...![]()
John B said:Here ya go, note the dimple at end of screwdriver.
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John90XJ said:My understanding is that not all of the Double Cardan joints have a center section grease fitting.
John B said:Hmmm...wasnt aware of that, thanks for posting that. Any idea what did or did not have the fitting?
The shaft pictured is an original Mopar front XJ shaft. I'll have to check my newer Woods shaft.
dieck said:Also, I have a tru-trac in the rear D35. I've heard conflicting advice on if this needs any friction modifiers or special lubes. I thought that it had no clutches and was all mechanical, which would lead me to believe that it requires nothing special. But just about everyone I talk to swears it requires some nasty smelling stuff.
John90XJ said:Replace the pinion seal. It's not hard and the problem won't get better until you do it. Make sure you have an airgun capable of getting the pinion nut re-torqued.
EDIT: I just read the factory service manual for both the D35 and the Chrysler 8.25 and they give a fair amount of detail about measuring bearing preload and how to get it set back to spec once you've replaced the seal. If you would like the details straight from the FSM, let me know and I'll email them to you in a .PDF. FWIW, we usually just rattle them back on until it "feels" right and not worry about it. When I pulled my D35 apart after about 200k miles, it looked fine and the gears were then sold off to someone else.
You don't need friction modifier in a gear driven LSD. Just use the recommended gear oil. The FSM says to use 75-90 for normal operations, 80-140 synthetic for trailer towing. Here is the Eaton manual: http://www.eatonperformance.com/PDFs/TrutracOwner-1.pdf
dieck said:You are amazingly responsive. Thank you. It's interesting how much incorrect info there is even among the people that install this stuff for a living. I'll dig into the right steps to prelace the pinion seal.
You hit that right on the nose. I keep getting fliers/coupons from Jeep dealers and quick-lube places here in Toledo for tranny flushes, oil changes, et cetera. Most of them list exactly how much fluid and what type they're going to add; the funny part is that just about every one lists almost verbatim "full ATF flush." I even called two to see if they were just using ATF as a general term. Nope--they actually believe that the AW4 engine uses it.dieck said:It's interesting how much incorrect info there is even among the people that install this stuff for a living.
toledotimber said:If it has the AW4 transmission, just remember it does NOT take ATF, no matter what any dealer or shop says. It takes Dexron/Mercon.
EDIT: Nice looking Jeep, by the way.