How does this happen? - JeepForum.com
Search  
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep Cherokee & Comanche Forums > XJ Cherokee Technical Forum > How does this happen?

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineRubicon Express Suspensions from CCOR 706-207-4140Smittybilt Hard Tops @ Oconee Off-Road! 706-534-9955

Reply
Unread 05-07-2013, 08:38 PM   #1
MuddSnapper
Registered User
1990 XJ Cherokee 
 
Join Date: Feb 2013
Location: St Cloud, MN
Posts: 114
How does this happen?

Front axle

img_20130507_152507_045.jpg  
__________________
1990 Renix XJ 'Rusty Blue'
4.5" Procomp
31" Copper STT

[URL="http://www.jeepforum.com/forum/f22/1990-xj-4-0-renix-build-codename-mudd-1492362/"]Project MUDD[/URL]
Life begins at the end of your comfort zone
MuddSnapper is offline   Reply With Quote
Unread 05-08-2013, 10:49 AM   #2
98muddyjeep
rockin lil red wagon
 
98muddyjeep's Avatar
1998 XJ Cherokee 
 
Join Date: Jun 2008
Location: Hatboro PA
Posts: 1,225
Are you talking about the marks on the plate behind the pinion gear?
__________________
ah,beer the cause of and cure to all of lifes problems ...Homer J Simpson... I am the guy in the red jeep!
98muddyjeep is offline   Reply With Quote
Unread 05-08-2013, 11:05 AM   #3
CJ7-Tim
Real Jeeps have dents.
 
CJ7-Tim's Avatar
2000 XJ Cherokee 
 
Join Date: Apr 2002
Location: out in the garage - Minneapolis, Minnesota
Posts: 21,643
Original stock gears, or replacement gears ?
__________________
.

According to the National Shooting Sports Foundation, AR-15 sporting rifles account for nearly 20% of all U.S. firearms sales.

Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ......

Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.
CJ7-Tim is offline   Reply With Quote
Unread 05-08-2013, 11:39 AM   #4
TheBoogieman
Demonic Jeep Freak!
 
TheBoogieman's Avatar
1998 TJ Wrangler 
 
Join Date: Aug 2006
Location: Charlottesville, Va
Posts: 27,722
I'm getting old.The pics weren't big enough.
__________________
Quote:
When I had 3.07s I would draft behind birds as an attempt to do the speed limit.
TheBoogieman is offline   Reply With Quote
Unread 05-08-2013, 12:24 PM   #5
Diamond-x
Registered User
1991 XJ Cherokee 
 
Join Date: Aug 2008
Location: Socal
Posts: 1,190
You're gonna need to provide a little more info.
Was there any schrapnel or excessive grit in the diff? Was the pinion excessively loose? Was it like that when you installed it?
Look for a large chunk of something in the nooks and crannys of the diff.
Judging by the large pic (kudos for actually putting it in focus) it looks like something contacted the plate over-and-over, possibly the pinion.
But were gonna need more info to diagnose.
Diamond-x is offline   Reply With Quote
Unread 05-09-2013, 12:49 PM   #6
MuddSnapper
Registered User
1990 XJ Cherokee 
 
Join Date: Feb 2013
Location: St Cloud, MN
Posts: 114
90 xj stock Dana 30, as far as i know stock gears. Bought it for 900 in Feb. with a 4 in lift and 31's. No grit, fluid looked pretty new though. 241 t case with slack in the chain, shaft turns more than it should when you trust it by hand. I've been having this gnarly shake and growl at low speeds, worse when braking to a stop. Opened her up cleaned her real good, even took the front shady out and it might gave helped but not a noticeable difference. Anything else you need?

Would bad shaft seals cause this? Might have to take a video..
__________________
1990 Renix XJ 'Rusty Blue'
4.5" Procomp
31" Copper STT

[URL="http://www.jeepforum.com/forum/f22/1990-xj-4-0-renix-build-codename-mudd-1492362/"]Project MUDD[/URL]
Life begins at the end of your comfort zone
MuddSnapper is offline   Reply With Quote
Unread 05-09-2013, 05:00 PM   #7
CJ7-Tim
Real Jeeps have dents.
 
CJ7-Tim's Avatar
2000 XJ Cherokee 
 
Join Date: Apr 2002
Location: out in the garage - Minneapolis, Minnesota
Posts: 21,643
Probably a sloppy pinion bearing. Any play in the axle yoke ?
__________________
.

According to the National Shooting Sports Foundation, AR-15 sporting rifles account for nearly 20% of all U.S. firearms sales.

Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ......

Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.
CJ7-Tim is offline   Reply With Quote
Unread 05-09-2013, 05:03 PM   #8
MuddSnapper
Registered User
1990 XJ Cherokee 
 
Join Date: Feb 2013
Location: St Cloud, MN
Posts: 114
Only slightly front to back. Maybe a few thousandths? It is wet around the yoke like it was leaking at one point but my driveway only does spits of brake fluid from a leaking abs hose..
__________________
1990 Renix XJ 'Rusty Blue'
4.5" Procomp
31" Copper STT

[URL="http://www.jeepforum.com/forum/f22/1990-xj-4-0-renix-build-codename-mudd-1492362/"]Project MUDD[/URL]
Life begins at the end of your comfort zone
MuddSnapper is offline   Reply With Quote
Unread 05-10-2013, 02:15 PM   #9
Diamond-x
Registered User
1991 XJ Cherokee 
 
Join Date: Aug 2008
Location: Socal
Posts: 1,190
Quote:
Originally Posted by CJ7-Tim View Post
Probably a sloppy pinion bearing. Any play in the axle yoke ?
^ this
Diamond-x is offline   Reply With Quote
Unread 05-11-2013, 08:05 AM   #10
AZ Jeff
Web Wheeler
2014 JK Wrangler 
 
Join Date: Sep 2005
Location: San Tan Valley Arizona, AZ
Posts: 7,382
Quote:
Originally Posted by MuddSnapper View Post
Only slightly front to back. Maybe a few thousandths? It is wet around the yoke like it was leaking at one point but my driveway only does spits of brake fluid from a leaking abs hose..
There should NEVER be any axial play in the pinion when installed correctly.
__________________
AZ-Jeff
1992 XJ -- stock (RIP)
2000 XJ -- lots of basic mods. Sold to fellow forum member. I miss it.
2014 JK -- the project is just starting!
AZ Jeff is offline   Reply With Quote
Unread 05-11-2013, 08:59 AM   #11
MuddSnapper
Registered User
1990 XJ Cherokee 
 
Join Date: Feb 2013
Location: St Cloud, MN
Posts: 114
Quote:
Originally Posted by AZ Jeff View Post
There should NEVER be any axial play in the pinion when installed correctly.
OK. I didnt install a new one yet but I will keep that in mind. On the pass side I think my u joint is shot. The shaft slides in and out a decent amount. Could that be from the C clip breaking or the U joint
__________________
1990 Renix XJ 'Rusty Blue'
4.5" Procomp
31" Copper STT

[URL="http://www.jeepforum.com/forum/f22/1990-xj-4-0-renix-build-codename-mudd-1492362/"]Project MUDD[/URL]
Life begins at the end of your comfort zone
MuddSnapper is offline   Reply With Quote
Unread 05-11-2013, 09:23 AM   #12
98muddyjeep
rockin lil red wagon
 
98muddyjeep's Avatar
1998 XJ Cherokee 
 
Join Date: Jun 2008
Location: Hatboro PA
Posts: 1,225
The front axles dont use c clips to hold them in,the unit bearings at the wheel hold the front axles in and no it wouldnt cause that,I have seen some awful bad u joints in my time with no internal damage.
__________________
ah,beer the cause of and cure to all of lifes problems ...Homer J Simpson... I am the guy in the red jeep!
98muddyjeep is offline   Reply With Quote
Unread 05-11-2013, 09:27 AM   #13
CJ7-Tim
Real Jeeps have dents.
 
CJ7-Tim's Avatar
2000 XJ Cherokee 
 
Join Date: Apr 2002
Location: out in the garage - Minneapolis, Minnesota
Posts: 21,643
Somebody with experience needs to see inside the diff and feel for any pinion play. You need to take you Jeep to a trusted and skilled mechanic for a proper diagnostic inspection of the differential.
__________________
.

According to the National Shooting Sports Foundation, AR-15 sporting rifles account for nearly 20% of all U.S. firearms sales.

Progressive Liberalism: Bringing you new Healthcare ideas so wonderful, they have to include mandatory participation ......

Originally Posted by Ronald W. Reagan: Government is not the solution to our problems; Government is the problem.
CJ7-Tim is offline   Reply With Quote




Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.