NAXJA Forums -::- North American XJ Association  

Go Back   NAXJA Forums -::- North American XJ Association > NAXJA Unibody Jeep Technical Forums > Jeep Cherokee XJ (1984 - 2001) > Modified Tech Discussion
HOME Member FAQ Sponsor Info Rules Bylaws E-Mail

Modified Tech Discussion Forum for Tech related discussion for Modified XJ's and MJ's.

Reply
 
Thread Tools Display Modes
  #1  
Old September 28th, 2008, 22:49
squirrel80 squirrel80 is offline
NAXJA Forum User
 
Join Date: Jun 2008
Location: Prescott Valley, AZ
Posts: 1,106
Drivetrain Noise I need help

So I have completed my XJ project only to find out that I need to start taking it all back apart. I am so discouraged right now that I am having a hard time even motivating myself to continue. Here is the history: '92 XJ with an AW4 and 231 transfer with 135,000 miles. It drove and ran fine when I started , it was completely stock. My mods: 6"BDS long arm lift with JK dana 44s regeared to 5.13, 231 was rebuilt and a Tom Woods Super Duty SYE was installed. Transmisson was completely rebuilt and and the converter was rebuilt by TCS. New front and rear Tom Woods driveline were installed and all the pinion angles are good. Everything works flawless but I am getting a drivetrain noise and a little bit of vibration. It does not sound like a gear whine and when we set them up the pattern looked very good and hit in the center of the teeth. Also I had about 7 to 8 thousands of backlash in both. The sound is more of a loud gear mesh with a little bit of a clatter. I know it is almost impossible to diagnose a sound by a text desciption but I'm looking for any sugesstions. I pulled the front drive shaft and the vibration went away a bit, but you can still here the sound. The sound starts as soon as I start to roll from a stop and is about the same under power or coast. the vibration is worse under power. I put about 100 miles on it this weekend some highway some city and some wheeling and it never got worse or better. I started to lean toward the transfer case so I have pulled it out and everything inside looks good. The only sign of any wear is a bit of rubbing on the bottom shift fork from the gear above it. I do not have the terms for this, but everything seemed to be in its place and I can't find anything wrong. Can anyone give any kind of words of encouragement in a direction to head. My next step is going to be disassembling the diffs. I just can't get motivated to take apart what I just spent months putting together.
Reply With Quote
  #2  
Old September 29th, 2008, 07:59
Clean Racing Clean Racing is offline
NAXJA Forum User
 
Join Date: Mar 2004
Location: Bellingham, Wa
Posts: 2,507
Re: Drivetrain Noise I need help

Before you condemn the diffs... Have your driveshafts rechecked for balance.. I just had a pair of TW shafts that were no more than a month old vibrating.. Had them rebalanced and all is good again.. Also make sure there is grease in the CV on the shaft as well.. I am not saying that TW is a junk product, they are some of the nicest shafts out there.. I figured he had someone new doing the balancing duties..
Reply With Quote
  #3  
Old September 29th, 2008, 09:27
squirrel80 squirrel80 is offline
NAXJA Forum User
 
Join Date: Jun 2008
Location: Prescott Valley, AZ
Posts: 1,106
Re: Drivetrain Noise I need help

I did grease all the zerks on both shafts but did not check the CV. Also rechecking the balance is a good idea. I have an Inland driveline real close to me so I will do that.
Reply With Quote
  #4  
Old September 29th, 2008, 11:38
squirrel80 squirrel80 is offline
NAXJA Forum User
 
Join Date: Jun 2008
Location: Prescott Valley, AZ
Posts: 1,106
Re: Drivetrain Noise I need help

Well how about that for a quick answer. The driveline shop just called and both dirvelines were right on the money. So Tom Woods is safe. Now I'm going to pull the transfer back apart and take some photos tonight. I want to make sure there is nothing I am missing before I put it back in.
Reply With Quote
  #5  
Old September 29th, 2008, 12:36
jbjustin33415 jbjustin33415 is offline
NAXJA Forum User
 
Join Date: Jul 2007
Location: West Palm Beach, FL
Posts: 186
Re: Drivetrain Noise I need help

My jeeper made a similar noise as the one you are describing. I could really hear it when driving next to a wall or barrier on the highway. The noise was coming from the tcase, it was the planetary gears binding up. They would freespin for a couple revolutions then lock up. There was also massive amounts of metal shavings in the case. When you pull the tcase make sure the planetary gears work right and shift it back and forth between 2wd and 4wd and spin it. Are you in Palm Springs, CA or Palm Springs, FL?
Reply With Quote
  #6  
Old September 29th, 2008, 12:50
squirrel80 squirrel80 is offline
NAXJA Forum User
 
Join Date: Jun 2008
Location: Prescott Valley, AZ
Posts: 1,106
Re: Drivetrain Noise I need help

I did not see any kind of shavings in the case. But I will be giving a good look again tonight and taking pictures. I am leaning toward the Synchonizer Hub might be upside down. I hope it is that easy. I was not there when the transfer was taken apart the first time. By the way I'm in California.
Reply With Quote
  #7  
Old September 29th, 2008, 18:46
squirrel80 squirrel80 is offline
NAXJA Forum User
 
Join Date: Jun 2008
Location: Prescott Valley, AZ
Posts: 1,106
Re: Drivetrain Noise I need help

Here are some photos I just took. Am I miising something or does all this look to be in the right place.

http://s53.photobucket.com/albums/g7...ansfer%20case/
Reply With Quote
  #8  
Old September 29th, 2008, 19:36
xjjeeper19 xjjeeper19 is offline
NAXJA Forum User
 
Join Date: Feb 2007
Location: inland empire, ca
Posts: 2,429
Re: Drivetrain Noise I need help

As for inland empire driveline...don't go there, they are way over priced. Go to Ed moore in San bernardino.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Drivetrain noise NEWYXJ OEM Tech Discussion 3 July 15th, 2009 22:26
Post Mud Bog Drivetrain Noise MountainFisher OEM Tech Discussion 6 September 2nd, 2008 14:34
drivetrain noise - grinding kellen OEM Tech Discussion 7 March 11th, 2008 21:53
Please help diagnose drivetrain noise. Powerman Modified Tech Discussion 22 June 20th, 2006 10:04
'93 drivetrain into '88 XJ ChipsXJ OEM Tech Discussion 2 October 12th, 2005 11:37


All times are GMT -7. The time now is 09:42.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
NAXJA and NAXJA logo's Copyright NAXJA. All content/images Copyright NAXJA 1999-2014