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Unread 06-13-2011, 01:58 PM   #1
jeepgirl92
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1992 XJ Cherokee 
 
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How to replace flywheel 92 Cherokee Laredo

Sorry for the new thread. I've been searching the site for a little over 2 hours and didn't find exactly the answer I need.

My 92 Cherokee Laredo 4.0 automatic transmission 4wd has been making a really bad knocking sound. It started making noise only when the air was on and over 2-3 days started getting worse, and now does it all the time. I didn't find any cracks in the flexplate, and then replaced the rod bearings. It didn't fix the problem. Any ideas?

I'm considering replacing the flywheel because I can't isolate the problem, but the noise is definitely coming from that general area. What I want to know is if it's possible to replace the flywheel without dropping the transmission? How hard it will be, and how long it should take? I'm hoping I can just slide the transmission back without dropping it? But I'd really appreciate some step-by-step guideline on the easiest way to do it... or suggestions of other things the problem could be before replacing the flywheel.

Thanks in advance!

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Unread 06-13-2011, 03:02 PM   #2
lowicz96
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Well i dont have much advice with the noise but i can help to remove the flexplate/flywheel (kinda the same thing but different between manuals and auto's).

1) pull spark plugs
2) rotate motor (with a wrench or similar) until you find one of the torque converter bolts. Loosen all 4 torque converter bolts.
3) Unbolt the exhaust at the header and remove the cross member. Support the trans with a jack. (This is a good time to replace the exhaust donut gasket)
4) lower the rear of the trans down and unbolt the top two trans bolts holding it to the engine. (E12 reverse torx bolts). Then raise the trans back up, support the engine and remove the rest of the bolts holding the trans to the engine.
5) remove the trans with the torque converter still attached to the trans. I usually just use a jack with some wood.
6) then you can remove the flexplate to inspect/replace it.
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Unread 06-14-2011, 07:19 PM   #3
Redrum8675
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flywheel and flexplate are the same thing on an automatic
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Unread 07-06-2011, 03:56 PM   #4
brigbeach
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Quote:
Originally Posted by lowicz96 View Post

2) rotate motor (with a wrench or similar) until you find one of the torque converter bolts. Loosen all 4 torque converter bolts.
How would I rotate the motor with a wrench?
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Unread 07-06-2011, 05:23 PM   #5
cruiser54
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Have you checked the tightness of the torque converter to flexplate bolts yet? That's VERY common.
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Unread 07-19-2011, 11:49 AM   #6
XmuthJ
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I'm about to go digging around my 92 to figure out what's wrong, I'll take pics along the way and make a lil writeup cause i can't seem to find anything too detailed about this issue.
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Unread 07-19-2011, 02:31 PM   #7
Luke94XJ
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X2 on the Torque converter bolts, they've been loose on two of my friend's Xjs, use some loctite on them.
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Unread 07-19-2011, 02:41 PM   #8
cruiser54
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Remove the lowermost 1/4 moon looking cover where the engine meets the trans and shine a light up there.

Four 15mm headed bolts. See if the one you can see is loose. If it is, remove it, apply Loctite to the thread and tightn it back up. Rotate the engine around til you've done all 4 bolts. A 3/4" socket on the front pulley will turn the engine over.
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Unread 07-19-2011, 09:11 PM   #9
Goldenknob
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Blue locktite not red. right? lol

I thought my torque converter bolts were loose and come to find out, it was my cat rattling, lol. Does the sound change with the rpm's of your engine? mine mostly rattled at idle.
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Unread 07-19-2011, 09:13 PM   #10
cruiser54
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Color doesn't seem to define the different types of LocTite anymore like it used to. Medium Strength is what to use.
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Unread 07-19-2011, 09:23 PM   #11
brigbeach
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Quote:
Originally Posted by cruiser54 View Post
Remove the lowermost 1/4 moon looking cover where the engine meets the trans and shine a light up there.

Four 15mm headed bolts. See if the one you can see is loose. If it is, remove it, apply Loctite to the thread and tightn it back up. Rotate the engine around til you've done all 4 bolts. A 3/4" socket on the front pulley will turn the engine over.
thank you
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