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Unread 05-26-2015, 08:07 AM   #1
TanCJ
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1984 CJ7 
 
Join Date: Sep 2012
Location: Fraziers Bottom, WV
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Amc 20 clicking

I have an open diff AMC 20 on my CJ7 and while I'm driving forward, my driver side rear wheel makes a clicking noise and a slight pop. I placed the jeep on level ground, jacked it up. The passenger side wheel spins freely and without hesitation. The driver side wheel can not be turned by hand. Where should I start to fix this problem?

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Unread 05-26-2015, 08:37 AM   #2
dirtdudeaz
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1983 CJ7 
 
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Only way to know anything for sure is to open the cover and look inside. Minimum it requires an oil change, and some new RTV for the cover, which isn't a bad deal.

Did this happen all of the sudden one day while driving down the road? Have you been wheeling recently and it started after that?
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Unread 05-26-2015, 09:34 AM   #3
OrangeCJ-5
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I'd start by pulling the drum on that side to check that the brake isn't stuck on.
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Unread 05-26-2015, 09:56 AM   #4
TanCJ
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I pulled the drum and the axle is not wanting to turn. Going to pop the cover off and go on. It just started backed it up and click click pop. NO wheeling no hauling nothing....
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Unread 05-26-2015, 11:55 AM   #5
TanCJ
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Ok pulled the cover no metal everything looks good.
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Unread 05-26-2015, 12:10 PM   #6
1018
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Clicking and popping sounds like a lunchbox locker in there. Can you watch it spin with the diff cover off? If it's an open diff, I'd check my spider gears as it was being turned to make sure there was no damage to the teeth.
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Unread 05-26-2015, 12:18 PM   #7
matt1980
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if the wheel does not want to turn with brakes removed I would turn my attention to wheel bearing. Is there any in/out movement or up down play at the hub?
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Unread 05-26-2015, 12:18 PM   #8
TanCJ
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Yes the teeth everything looked great. The passenger side tire will spin freely all the teeth everything looked good.
I think Im going to pull the guts out on the driver side never done this before soo happy happy joy joy.
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Unread 05-26-2015, 12:22 PM   #9
1018
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Check the bearings like Matt said. That may be the culprit if the diff and brake looks good.
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Unread Yesterday, 10:57 AM   #10
TanCJ
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Location: Fraziers Bottom, WV
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I know this is covered does anyone know a good guide to getting the axle out? Very green when it comes to working on differentials. Whats a good kit to order to upgrade to 1P axles?
Also my jeep is a 1984 cj7.
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Unread Yesterday, 11:07 AM   #11
matt1980
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Are your axles damaged or are you just looking for the peace of mind with the 1 Piece? As for removing the axles once you get the bolts holding the backing plate off it should slide out. If you are upgrading to 1 piece axles you don't need the hub to come off. The backing plate can come off the bearing side if it is easier, you will have to cut/press the bearing off the old axle though. One of my hubs wouldn't budge so I went the other way. The wheel bearing is not a press fit in the axle housing. If you upgrade you will have the press the new bearing and retainer on the new axles, I used the press I have in my garage, nothing special, 12 ton, probably came from harbor freight or northern tool, don't remember.
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Unread Yesterday, 11:20 AM   #12
TanCJ
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Not sure if the driver side is damaged, that is where all the noise is coming from I have a feeling the bearing went out. Is there anything in the diff that needs to be done before it will slide out?
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Unread Yesterday, 12:13 PM   #13
matt1980
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Mine is a 1980 narrow track and I do not believe yours is different other than being a little wider, can someone that knows for sure confirm he is good to unbolt and slide it out. I can not immagine there are clips or anything in there but it would be great if someone else can confirm.
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Unread Yesterday, 07:41 PM   #14
1018
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When I pulled mine (85 wide Trac, 1 piece) I don't recall any clips.
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