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Old 04-01-2014, 10:19 PM
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Front pinion seal

Hello all,
Anyone ever replace a front pinion seal? Mine is leaking and im tired of waiting on someone else to fix it. Is seems straightforward until its time to put the pinion nut back on. Does the crush sleeve create a problem?

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2013 jk 6spd - 18/59 coils - PS BFH Trail Stinger - Teraflex Hinge and Carrier - Yukon 4.56 gears - Teraflex c gussets - Teraflex front axle sleeves - Alloy USA Ball Joints - Banks Monster Exhaust - JKS Quick Discos - Pro-Comp 7069's - Falken Wildpeak MT 37's - MORE Oil Pan/Trans Skid - PS Bombshell Diff Covers - Rancho 7000 MT's
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Old 04-01-2014, 10:33 PM   #2
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It is straightforward. The tricky part will be running the nut back down to spec. I'd run it down to 160 ft/lb and see how it feels. To truly test you'd need to check the preload. Short of that check it for heat build up or any looseness after a 50 mile run. Then check the same again in a couple of weeks.

Heck, I figured you'd have called by now.


Bob K.

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Old 04-02-2014, 05:39 AM
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Quote:
Originally Posted by nwbronco View Post
It is straightforward. The tricky part will be running the nut back down to spec. I'd run it down to 160 ft/lb and see how it feels. To truly test you'd need to check the preload. Short of that check it for heat build up or any looseness after a 50 mile run. Then check the same again in a couple of weeks. Heck, I figured you'd have called by now. Bob K.
Lol i actually just remembered last night that i was gonna reach out to you forgive me my memory's shot lol i'll message ya in the morning!
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2013 jk 6spd - 18/59 coils - PS BFH Trail Stinger - Teraflex Hinge and Carrier - Yukon 4.56 gears - Teraflex c gussets - Teraflex front axle sleeves - Alloy USA Ball Joints - Banks Monster Exhaust - JKS Quick Discos - Pro-Comp 7069's - Falken Wildpeak MT 37's - MORE Oil Pan/Trans Skid - PS Bombshell Diff Covers - Rancho 7000 MT's
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Old 04-02-2014, 09:08 AM   #4
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It's all good. Hopefully you get the issues fixed and enjoy the rig for it's purpose.

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Old 05-27-2014, 09:35 AM
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Well it seems something is up again. Wound up not getting the pinion seal fixed as i just havent had the time (pinion seal is sitting in my closet) lol but this sunday i was gonna tackle it. wouldnt ya know both the front and rear are leaking now. Bad. I dont understand what is going on. Theres gotta be something going on thats creating pressure in there to blow both seals. I have noticed the jeep dosent want to go as easily as it did. I think theres a lot of play somewhere. When wheeling in 4 lo all you hear is the driveline slapping from all the looseness. Bob if you see this i was gonna try to reach out to you after work.
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Old 05-27-2014, 12:45 PM   #6
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I see this and maybe you do have other problems. Give me a holler when you can.

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Old 05-27-2014, 12:49 PM   #7
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It does not have to be pressure. Oil is splashed up the pinion by gear motion and retained by the splash ring to lube the outer bearing. Incorrect preload or torque spec can cause a bit of wiggle room for the pinion. It usually is felt as a vibration and will cause the seal to leak.

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