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Old 06-23-2008, 08:15 PM   #1
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Rear axle questions

So I went wheeling this weekend and had a great time until sunday when i tried to climb a hill. I had gotten about 75% of the way up when I heard a pop and I started to roll backwards. It got dangerous and the butthole pucker factor came into play but all is safe and sound with no major damage I think.

What had happened was my rear yoke decide to call it quits along with my U-joints. So I took off my yoke and noticed that my pinion (sp?) is really loose up inside my diff. Is that normal or should ther be a bearing holding it steady?

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Old 06-23-2008, 09:41 PM   #2
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should not be loose, is the nut still there? the threads you see are actually part of the pinion gear itself, and a nut is used to hold the yoke, to the pinion. nut could've come loose, or the bearings are toast. either way, not good cuz damage to ring and pinion could've occured from that coming loose.

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Old 06-23-2008, 09:55 PM   #3
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^ x2 ^. You'll DEFINITELY want to inspect the ring and pinion soon. When mine went it was the spider gears that shattered. I just replaced the whole thing with an 8.8.
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Old 06-24-2008, 05:22 AM   #4
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well i pulled the yoke and thats when i noticed it. the nut was off and the yoke was out.
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Old 06-24-2008, 06:52 AM   #5
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NOT GOOD!!! Your next step should be to pull the cover and check the gears.
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Old 06-26-2008, 01:25 AM   #6
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My spider gears exploded when i dropped the clutch . not a big deal but i would defintely check. my ring and pinion had about a 1/32 inch of play (just a guess i dont really remember tha well).
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Old 06-26-2008, 04:54 AM   #7
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well i popped the diff cover and checked the gears and all is good. I installed the new yoke and tightened it back down and now the only play in the pinion is the slack that is supposed to be there.
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89 YJ with 2.5l motor and a 5 speed
SOA, SYE, 33" by 12.5" on fake beadlocks, Tom Woods driveshaft, Rugged Ridge HD steering linkage, Warn steering box skidplate, Daystar Rock crusher rear bumper, Daystar Polyurethane bushing kit, Tomken steering box support, Hi-Lift jack, Currie F+R greaseable shackles, Auto-Meter guages, Smittybilt F/bumper, Smittybilt 8k winch, Viair onboard air, free stuff from uncle sam
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Old 06-26-2008, 06:44 AM   #8
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Quote:
Originally Posted by myblack89yj View Post
well i popped the diff cover and checked the gears and all is good. I installed the new yoke and tightened it back down and now the only play in the pinion is the slack that is supposed to be there.
that's good to hear. she runs good?
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Old 06-26-2008, 07:15 AM   #9
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Quote:
Originally Posted by myblack89yj View Post
well i popped the diff cover and checked the gears and all is good. I installed the new yoke and tightened it back down and now the only play in the pinion is the slack that is supposed to be there.
so what happened, pinion nut came loose? if so, get a new one right away, and use a little blue thread locker when you put it on. if it came loose once, it probably will again, they're technically one use nut, that self locks, if it loosens again it might cause bigger damage.
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Old 06-26-2008, 02:07 PM   #10
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well ill find out tonight if she drives fine but in the process of installing the u-joint in my drive shaft i noticed that the holes holding the u-joint in place had started to crack and now i need a new CV joint. can anyone point me in the direction of a strong and cheap rear driveshaft?
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89 YJ with 2.5l motor and a 5 speed
SOA, SYE, 33" by 12.5" on fake beadlocks, Tom Woods driveshaft, Rugged Ridge HD steering linkage, Warn steering box skidplate, Daystar Rock crusher rear bumper, Daystar Polyurethane bushing kit, Tomken steering box support, Hi-Lift jack, Currie F+R greaseable shackles, Auto-Meter guages, Smittybilt F/bumper, Smittybilt 8k winch, Viair onboard air, free stuff from uncle sam
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Old 06-26-2008, 02:21 PM   #11
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i got a front shaft from an xj and had it shortened. you can get the shafts for 40 bucks or less and to cut it down was less than 100 bucks, iirc

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