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Unread 02-17-2012, 04:02 PM   #1
flippinjeep
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1990 YJ Wrangler 
 
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overdrive unit please help

i got a 99 grand cherokee 4.0 4x4 and i had to pull off the overdrive unit to fix the seal and when i went to slid it back on it would go almost all the way but stop with about 1 inch befor the trans

i looked inside the overdrive unit and the bottom gear is off set from the rest of the gears....so i know that why it wont slide back on but how do i get the aligned back up?



thanks rob

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Unread 02-17-2012, 04:53 PM   #2
bigchevyman24
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Going to have to get it rebuilt by a pro. If the shaft gets turned at all while it is off the gears will misalign. There is a spring in the rear of the unit that has 700+ lbs of pressure on it so you really need to take it to a tyranny shop to get it rebuilt. Check my 2wd to 4wd thread below for more detailed info...
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Unread 02-17-2012, 05:11 PM   #3
flippinjeep
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damn really?



thats bull sh**.....what would make it turn to make itself off align?
anyone know a price range for the rebuild?
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Unread 02-17-2012, 05:31 PM   #4
bigchevyman24
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I was in the same boat. I bought a used one off eBay($125) and now have no reverse. You can get a rebuilt one on eBay for around $300...I am just gonna get my whole tranny rebuilt since I am pushing 140k miles anyway...

I would call and see pricing. You may be better off to tow it to a tranny shop and get them to rebuild it and put it on. It is possible to put it on yourself but be very very careful not to spin the shaft on the unit while it is not attached to the tranny. Are you sure the splines are offset? Another reason it may not go on is the metal fluid tube may not be lining up. Did you look at my thread? I have pretty detailed info on how to install it...
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CURRENT: 2001 WJ V8 LIMITED - Quadratrac, 60th anniversary, Fat Bob's 2.5/2 lift, HID's, roof rack, 31" Rugged Terrains, 5k lb Curt Hitch

SOLD: 2000 WJ 2WD CONVERTED TO 4X4, 97 TJ ON 35'S, 95 XJ ON 33'S
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Unread 02-17-2012, 05:34 PM   #5
flippinjeep
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yeah i have checked everything and you can clearly see the the bottom set of gears is not lined up
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Unread 02-17-2012, 06:55 PM   #6
bigchevyman24
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Well yeah, definately need it taken apart and put back together. Don't know if you have to get it "rebuilt" with new parts but it will need to be taken apart. Just don't try yourself because everything will shoot out and could injure you. I would get a pro to look at it...
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CURRENT: 2001 WJ V8 LIMITED - Quadratrac, 60th anniversary, Fat Bob's 2.5/2 lift, HID's, roof rack, 31" Rugged Terrains, 5k lb Curt Hitch

SOLD: 2000 WJ 2WD CONVERTED TO 4X4, 97 TJ ON 35'S, 95 XJ ON 33'S
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Unread 02-18-2012, 01:13 PM   #7
flippinjeep
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ok so i called the tranz shop and im gonna take it up to him on monday and he said should be a quick easy fix with out buying a rebuild kit
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Unread 02-18-2012, 02:05 PM   #8
bigchevyman24
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Good. He is probably just gonna take it apart and put it back together the right way... I would probably let Kim put it on too, just to be on the safe side...
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CURRENT: 2001 WJ V8 LIMITED - Quadratrac, 60th anniversary, Fat Bob's 2.5/2 lift, HID's, roof rack, 31" Rugged Terrains, 5k lb Curt Hitch

SOLD: 2000 WJ 2WD CONVERTED TO 4X4, 97 TJ ON 35'S, 95 XJ ON 33'S
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