Will the D30 in my 97 have a crush sleeve?
#1
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Will the D30 in my 97 have a crush sleeve?
I'm going to swap out the leaky pinion seal in my 97's front axle. Now I know its a D30 but is the pinion set by a crush sleeve. I am quite capable of doing the project just concerned about the "line it up to the marks you made earlier" trick for the pinion nut/shaft; don't want to over tq. it.
Thanks for the help!
Thanks for the help!
#5
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Location: Blakeslee, PA
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Year: 97
Model: Cherokee
Engine: 4.7
What Overlander just said.
All XJ fronts until Mid 1999 were the High Pinion variety. To reduce part numbers & inventory ... the factory switched to the TJ style housing (which does use a crush sleeve).
But in the case of the 97 ... the pinion preload is accomplished via shims.
Joe
All XJ fronts until Mid 1999 were the High Pinion variety. To reduce part numbers & inventory ... the factory switched to the TJ style housing (which does use a crush sleeve).
But in the case of the 97 ... the pinion preload is accomplished via shims.
Joe
#6
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Nice! Thanks for the information. I went by Jeep today to get my factory options list and spoke with a tech, Chip, there in the shop. I asked him about my concerns with over torquing the crush sleeve when he assured me that just "poppin" it with the impact wouldn't come close to the actual torque load required to crush one; some 200ft-lbs. He claims to do most of the driveline work the dealership sees.
Either way, if there isn't a concern for over preloading the pinion bearing, via the crush sleeve, then I'm good to go. I'll grab an 1 1/8" socket from work and get this knocked out tomorrow night.
Either way, if there isn't a concern for over preloading the pinion bearing, via the crush sleeve, then I'm good to go. I'll grab an 1 1/8" socket from work and get this knocked out tomorrow night.
#7
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Year: 97
Model: Cherokee
Engine: 4.7
Well ... at least you know what dealer NOT to go to for driveline work.
Once you have "crushed" a crush sleeve ... it's stupid easy to overtighten and burn up the bearings. The "by the book" way is to put a new sleeve in and re-crush --- checking preload all the way. An "accepted alternative" is to mark the pinion nut and shaft and match it when you reinstall.
Oh .. it takes *well* more than 200 ft lbs to get a crush sleeve to begin collapsing.
But as said earlier ... none of this applies to you. You can just "go & gun" for your front axle.
Joe
Once you have "crushed" a crush sleeve ... it's stupid easy to overtighten and burn up the bearings. The "by the book" way is to put a new sleeve in and re-crush --- checking preload all the way. An "accepted alternative" is to mark the pinion nut and shaft and match it when you reinstall.
Oh .. it takes *well* more than 200 ft lbs to get a crush sleeve to begin collapsing.
But as said earlier ... none of this applies to you. You can just "go & gun" for your front axle.
Joe
Last edited by EndlessMtnFab; 01-19-2010 at 07:04 AM.
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#11
Goody for you! Here you go Kyle...
#14
CF Veteran
Thread Starter
So let it be known, for anyone who may stumble across this thread
D30's before mid 1999 uses shims to set pinion bearing preload
and
D30's past mid 1999 utilize a crush sleeve to set pinion bearing preload.
Case closed. Thanks guys
D30's before mid 1999 uses shims to set pinion bearing preload
and
D30's past mid 1999 utilize a crush sleeve to set pinion bearing preload.
Case closed. Thanks guys
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