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Greasing the Seldom Seen Flat Zerk

J0E

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I assume there are folks out there that have lifted their 392 to 3 1/2" and installed an aftermarket front drive shaft and maybe have a full set of skids also. My question is, how in the heck are you getting grease into the flat zerk at the transfer case? Adams says they should greased every 3k miles. For starters, since the 392 has full time 4WD, the transfer case has to be put in neutral and the front tires have to be off the ground to rotate the driveshaft to get the zerk in the right position. To add to the frustration, the skid plate(s) and crossmember make it almost impossible to see the zerk let alone get the needle in there to grease it....what a PITA!
>Adams says they should greased every 3k miles.
Where do they say that?

My guess is they are recommending way more than necessary.

How often should I grease my shaft and what type of grease should I use?

FWIW…I know you’re “supposed” to grease this joint every 3-5K miles but on my old lifted 06’ Power Wagon I never greased the factory CV joint (same design as Adams) and had no failures over 120K miles. I’m going with the Adams driveshaft on my 392 and while I definitely don’t look forward to greasing it I’ll do my best to do it every 5K…even if it’s a massive PITA.
If you're not going through water/mud, my guess is every 15K miles is more than enough.





 

XtremeRetard

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Had to remove my Next Venture Motorsports transfer case skid plate. Then the only way I was able to get to the flat grease zerk was to disconnect the driveshaft at the front differential and lift it up as high as possible and tie it to the motor mount. This allows enough space between the u-joints to get to the flat grease zerk fitting. I sure wish Teraflex made a Rzeppa driveshaft for the JL.
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Intersetingly Terraflex suggested to me that the JK shaft would fit. I forget the minor issue they mentioned, but in theory it will fit. Hit them up for the details. But I ended up just getting one with the MC lift otherwise I would have tested out the JK shaft..

MC label their JL shaft as JK as well.... so...
 

EbyCreek

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I agree that the JK shaft should work on the JL. Just hate to spend that kind of money without being sure it would fit. You would think if it fit that Teraflex would tell you that. It wouldn't take much time for someone at Teraflex to put one on and see.
 

XtremeRetard

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Like I said it does fit.. But whatever you do. Do not ring them and ask!
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