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Unread 07-08-2013, 10:21 AM   #1
Timer
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2004 KJ Liberty 
 
Join Date: Jul 2011
Location: Pittsburgh, Pa
Posts: 10
pinion seal replacement.

Well as the title says my minion seal needs replaced. Acting more like a drain lately. Any tips or tricks to fixing this my self or should I have a professional do it?

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Unread 07-08-2013, 05:44 PM   #2
BeerMonkeY
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2007 JK Wrangler 
 
Join Date: May 2005
Location: Lake Winola,PA
Posts: 1,204
well to do it absoulty correct its a bit time consuming with bearing preload and inch pounds and what not but many people get away with just zipping the pinion nut back on after a seal change. i have done it many times on a few jeeps with just zipping it on but when i did it on my JK i either didnt put it on tight enough or did it to tight as runied my gears, $800 later i had new gears and bearings.
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Unread 07-10-2013, 12:12 AM   #3
grenade187
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2002 KJ Liberty 
 
Join Date: Oct 2011
Location: vancouver, bc
Posts: 61
I'm assuming you're doing the front axle as those tend to wear out quicker. Did mine recently, basically followed the procedure in the factory service manual.

First jack up the front end, remove wheels, calipers and rotors. Then remove front driveshaft, then check that the pinion rotates smoothly. Using an inch-pound torque wrench, record the torque required to rotate the front pinion. Then remove the pinion nut, preferable to use a spanner and a breaker bar, but some people use an impact hammer (air ratchet, whichever you prefer), it's just harder on the gears and bearings. Remove flange, you may need to use a puller. Then you can get at the seal, you should be able to get it out with a hammer and chisel, just don't go crazy.. you can destroy the old seal but don't damage the housing. Install new seal, reinstall companion flange. Tighten pinion nut, then use a torque wrench to rotate the pinion gear - rotating torque should be equal to what you recorded during removal plus 5 inch-pounds. If it's less than what you need, tighten the pinion nut a little more, then check again. Once you've got that sorted, reinstall front driveshaft, brakes, wheels and you're on your way. Hope this helps!
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Unread 07-10-2013, 07:20 AM   #4
Timer
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2004 KJ Liberty 
 
Join Date: Jul 2011
Location: Pittsburgh, Pa
Posts: 10
It's the rear seal but according to the manual it's more or less the same process.
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Unread 07-10-2013, 07:20 AM   #5
Timer
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2004 KJ Liberty 
 
Join Date: Jul 2011
Location: Pittsburgh, Pa
Posts: 10
Ty guys!
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