How to Rejuvenate a Worn Out Johnny Joint

jjvw

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Feb 17, 2018
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Colorado, USA
We all know that Johnny Joints live forever with absolutely no maintenance. Until they don't. Of the 16 JJs on my Jeep, there are a few that have not been well greased since I installed them about 50-60k miles ago.

Lately I have been noticing an occasional clunk along with some odd tracking while driving. I finally figured out that I had three well worn joints that needed my attention.

Rather than buy $21 rebuild kits, Blaine had the interesting suggestion of adding more washers to tighten up the races.

I first tried some spare JJ washers, but those were way too thick and I was unable to press the joint together without the top washer sliding into the circlip groove. So I went to the hardware store and found these thin spacer bushings that are less than half the thickness of a JJ washer and only cost $1.75 each.
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These particular spacers were just a hair too large in diameter to fit into the JJ housing, so I ran the edge over a file a couple times.
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One washer gets added onto either side of the races and the whole mess gets pressed back together and reassembled.

The next drive was instantly better. And it only cost $3.50 per joint to fix!

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Regardless, everyone should grease their Johnny Joints!