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1987-2016 Wrangler Jammock Black 2.0 Jeep Hammock (YJ, TJ Rancho rockGEAR promotion gear from January 1-February 29,Zone Offroad Body and Suspension Lift Kits, Brackets, Disc

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Unread 06-25-2013, 10:17 PM   #1
Tankmeister
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1993 ZJ 
 
Join Date: Oct 2010
Location: Berlin, NJ
Posts: 303
Np231 issue

I have a 93 4.0 with the np231. Got stuck in a sticky situation and flooded the tranny with water. So I proceeded to flush it until it was completely out, issue is, when I'm in 4 wheel for a period of time or stress it a bit, it whines very loud, to be more specific ( makes the same whiring noise as if you were going in reverse with a manual trans.) is the t-case gonna go or do I have time to save it and what do I do?

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1996 ZJ "Tank" - 5.2 Deceased =(
1993 ZJ "Halftrack" - 4.0 with 4" Rough Country Lift and 31x10.50xR15 General Grabber AT^2's, Custom Limb Risers, Bumper Lights, Rubicon Express Double Shear Track-Bar, Rancho Steering Stabilizer, Crown HD steering setup, Black Widow roof basket.
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Unread 06-25-2013, 10:43 PM   #2
jm8881
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1996 ZJ 
 
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Location: Palm Desert, California
Posts: 729
Did you flush the tcase as well? They don't, or shouldn't, share fluid.
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Unread 06-25-2013, 10:53 PM   #3
Tankmeister
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1993 ZJ 
 
Join Date: Oct 2010
Location: Berlin, NJ
Posts: 303
Nah I haven't, and I honestly don't know how to. So any tips would be great
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1996 ZJ "Tank" - 5.2 Deceased =(
1993 ZJ "Halftrack" - 4.0 with 4" Rough Country Lift and 31x10.50xR15 General Grabber AT^2's, Custom Limb Risers, Bumper Lights, Rubicon Express Double Shear Track-Bar, Rancho Steering Stabilizer, Crown HD steering setup, Black Widow roof basket.
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Unread 06-27-2013, 07:39 PM   #4
Tankmeister
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1993 ZJ 
 
Join Date: Oct 2010
Location: Berlin, NJ
Posts: 303
I also need to know how I can figure out what spline I have, it's the 231 that connects to the 42re trans.
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1996 ZJ "Tank" - 5.2 Deceased =(
1993 ZJ "Halftrack" - 4.0 with 4" Rough Country Lift and 31x10.50xR15 General Grabber AT^2's, Custom Limb Risers, Bumper Lights, Rubicon Express Double Shear Track-Bar, Rancho Steering Stabilizer, Crown HD steering setup, Black Widow roof basket.
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Unread 06-28-2013, 10:15 AM   #5
RoldGold
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1996 ZJ 
 
Join Date: Jun 2013
Location: Philadelphia, PA
Posts: 316
Should be able to find info on splines here: http://www.jeepforum.com/forum/f13/t...-np242-685644/
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1996 Grand Cherokee Limited 4.0L
PSC Steering Gear; NP249 w/ new VC; Moog TRE's, Track Bar, Stabilizer bar bushings and endlinks, control arm bushings
Still no lift, and almost no paint on the hood
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Unread 06-28-2013, 11:43 PM   #6
JohnnyZJ
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2007 JK Wrangler 
 
Join Date: Oct 2008
Location: Calgary
Posts: 2,564
23 spline outer

Tcase has two 30mm plug bolts on the tcase. One to fill one to empty. Easy peasy
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Unread 06-30-2013, 04:42 PM   #7
Tankmeister
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1993 ZJ 
 
Join Date: Oct 2010
Location: Berlin, NJ
Posts: 303
Thanks, drained and refilled it, came out like BBQ sauce.
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1996 ZJ "Tank" - 5.2 Deceased =(
1993 ZJ "Halftrack" - 4.0 with 4" Rough Country Lift and 31x10.50xR15 General Grabber AT^2's, Custom Limb Risers, Bumper Lights, Rubicon Express Double Shear Track-Bar, Rancho Steering Stabilizer, Crown HD steering setup, Black Widow roof basket.
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