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Old 06-13-2009, 02:48 AM   #1
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loud clunking sound from rear

so a couple weeks ago my buddy decided to do donuts in the dirt with my baby. after a couple i started noticing a loud noise while turning left. later on that day it just got worse on bumps and especially on left turns. i cant figure out what it is. i thought it might be the diff so i took it apart the other day and the gears all look good no unusual wear on any of them. while im wheeling it just gets a lot worse and it sounds like the rear end is going to fall apart. could it be the axle shaft? wouldnt the wheel fall out if it was?
thanks

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Old 06-13-2009, 08:15 AM   #2
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Normally on a c clip D35 axle if you break the shaft the axle will walk itself out of the tube as you drive. If you do not have a c clip axle you will have to pull the axle to see if it has damage. A quick way to get an idea sometimes is to put the jeep on jack stands and try to spin the axle while in gear. If you hear the clunking that is the side to look at first.

I would also check the suspension parts. Did you break an axle u bolt, are your shocks all still good and in place, and how are your bushings and shackles?

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Old 06-13-2009, 09:40 AM   #3
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check to see if you broke a spring center bolt
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Old 06-13-2009, 12:48 PM   #4
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Normally on a c clip D35 axle if you break the shaft the axle will walk itself out of the tube as you drive. If you do not have a c clip axle you will have to pull the axle to see if it has damage. A quick way to get an idea sometimes is to put the jeep on jack stands and try to spin the axle while in gear. If you hear the clunking that is the side to look at first.

I would also check the suspension parts. Did you break an axle u bolt, are your shocks all still good and in place, and how are your bushings and shackles?
when i opened up the diff i had it on stands and moved the wheels and i didn't hear anything. it comes and goes. when i make hard left turns it sounds like a wrench go thrown in to a bunch of moving gears. Also when i wheel i wont do it then all of a sudden it starts and does it even in a straight line.

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check to see if you broke a spring center bolt
ill double check but it sounds like a rolling sound. i was trying to do a very steep hill climb and i was coming down in reverse the sound got really bad so i climbed out while my buddy drove. i couldn't see anything and i got under and tried to wiggle everything. im pretty sure its internal.
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Old 06-13-2009, 12:56 PM   #5
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How far did you pull the dif apart did you remove the carrier you might want to look deeper into it.
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Old 06-13-2009, 09:47 PM   #6
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check to mak4e sure you did not sheer off the center pin in the diff, then make sure you have all your spider gears.
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Old 06-14-2009, 12:53 PM   #7
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rear pinion bearing... same thing going on with mine.... when it gets alot of pressure on it, it sounds almost like it is slipping the axleshaft or something... but deff. check into that....
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Old 06-15-2009, 12:26 AM   #8
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thanks a lot im gonna look in th the pinion bearing.
as far as the spider gears they all looked fine no missing teeth or unsual wear.
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Old 06-15-2009, 04:33 AM   #9
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When looking at the carrier in a diff there is more to look at than the spider gears. Did you look to see if the c clips were still on the axle stubs? With no load on the driveshaft check all of the bearings, try to move the carrier side to side, try to rotate it forward and back to check backlash should be oly 15k movement here and also check the pinion bearing this way as well.

When you drained you oil did it have shavings of metal in it or debris. If all of these check out ok then you probably have no issues with the diff and carrier and should start looking elsewhere.
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Old 06-15-2009, 06:34 AM   #10
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Axle shaft is broken

Quote:
Originally Posted by 78cj7 View Post
Normally on a c clip D35 axle if you break the shaft the axle will walk itself out of the tube as you drive. If you do not have a c clip axle you will have to pull the axle to see if it has damage. A quick way to get an idea sometimes is to put the jeep on jack stands and try to spin the axle while in gear. If you hear the clunking that is the side to look at first.

I would also check the suspension parts. Did you break an axle u bolt, are your shocks all still good and in place, and how are your bushings and shackles?
One of the axle shafts in the read is broken.

I did the same thing
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Old 06-24-2009, 02:49 PM   #11
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Let me know what you come up with because mine is real bad. When you turn right i get the cachunk on the left and turn left I get it on the right. When I cross uneven terrain it sounds like the whole rear end is ripping appart.
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Old 06-26-2009, 05:08 PM   #12
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One of the axle shafts in the read is broken.

I did the same thing
So do i have to replace the whole shaft or what? sorry never heard of the read. imma newb
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Old 06-26-2009, 06:05 PM   #13
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I am sure he meant the rear
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Old 06-29-2009, 12:29 AM   #14
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so i just found out i have a non c clip axle. that explains a lot to me. some guy gave me a free d35 out of a 97 xj can i use the same shafts or some how make it work.
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Old 06-29-2009, 04:22 AM   #15
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Yes the 87 should have non c clip axles as well so you can use those.
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Old 06-29-2009, 10:37 AM   #16
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the xj axle is 97
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Old 06-29-2009, 10:51 AM   #17
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Oops my bad, a 97 D35 probably will not interchange I think it is a c clip axle. But you can swap the entire axle that would probably be easiest if the gears match up.
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Old 06-29-2009, 10:52 PM   #18
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is it easy to swap the 4.10 gears from my axle to the xj d35? the xj d35 has 3.55
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Old 06-30-2009, 04:28 AM   #19
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is it easy to swap the 4.10 gears from my axle to the xj d35? the xj d35 has 3.55
NO that is why I said if the gears match up, it would be an easy swap.
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Old 08-23-2009, 07:47 PM   #20
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Do you guys know what are stock gearing on a '90 YJ? I need to replace my rear end and i'm assuming it has stock gearing in it.
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Old 08-23-2009, 08:20 PM   #21
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3.73 is the usual

Maybe some unfortunate souls got 3.07
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Old 08-23-2009, 08:46 PM   #22
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id say defiantly make sure the axle shafts are still i one piece and go deeper and check ur bearings and races in the axle to make sure that u didn't crack a race will that axle really just swap in no mods

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