Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here XJ (84-01)
All OEM related XJ specific tech. Examples, no start, general maintenance or anything that's stock.

Harmonic Balancer????

Old 07-07-2012, 10:36 PM
  #1  
Member
Thread Starter
 
Join Date: Nov 2011
Location: Quakertown PA
Posts: 105
Likes: 0
Received 0 Likes on 0 Posts
Year: 2001
Model: Cherokee
Engine: 4.0
Default Harmonic Balancer????

So now that I got my front end all tight and DW all but gone now the next problem is popping up...

Driving it tonight I was getting a vibration that I was blaming on my rear. It felt like it was coming from the rear but I'm not so sure now. I couldn't figure out if it was at 40mph or 2,000 rpm so I'm not sure if its speed or RPM related.

I parked it for a while then got in to drive home... I now believe the vibe is RPM related because it got worse and I had it at about 20mph too. I was getting a squeal too but it sounded like a metallic squeal and not a loud high pitched belt squeal. The squeal is load related. It happens under acceleration not a certain speed or RPM.

When I got home I put it in neutral and revved it up a little and couldn't duplicate the vibe or the squeal. I put it in drive and kinda went like I would if I wanted to power brake a car to load the drive line and still couldn't reproduce it.

Is there a way to check or diagnose the balancer?

its an '01 4.0 AW4
Brian71583 is offline  
Old 07-07-2012, 10:49 PM
  #2  
Senior Member
 
The_ocho's Avatar
 
Join Date: Apr 2012
Location: Vegas
Posts: 954
Likes: 0
Received 0 Likes on 0 Posts
Year: 1992
Model: Cherokee
Engine: I6
Default

get under the front and look up at the balancer.. there is a inner and outer ring to the balancer held together by rubber.. the outer ring likes to move in and out when the rubber goes bad. mine moved in and started rubbing through the timing cover. look up and make sure the inner and outer ring are flush with each other. if not or the rubber is cracked replace the thing before it gets worse. make sure you buy/rent a puller and installer for the job tho you will need it. People say its a hard job, its really not. took me 30 min from start to end by going from under the rig and working on my back. also make sure you replace the seal as they wear to the balancer and will leak on your new one

here is a pic of mine. you can see the outer ring moved in and the rubber is sticking out the front
Name:  IMG_1062.jpg
Views: 357
Size:  57.5 KB
The_ocho is offline  
Old 07-07-2012, 11:01 PM
  #3  
CF Veteran
 
Join Date: Apr 2012
Location: Wisconsin
Posts: 5,302
Likes: 0
Received 0 Likes on 0 Posts
Model: Cherokee
Default

The balancer is two metal rings with rubber sandwiched in between. Normally you can spot a slipping outer ring visually. Might try applying a little pressure to the outer ring with a pry bar and see if it's solid.

Might also try removing your drive belt and running the engine for a few moments to see if the noise disappears. Could be a bearing in something driven by the belt.
Radi is offline  
Old 07-07-2012, 11:07 PM
  #4  
CF Veteran
 
DFlintstone's Avatar
 
Join Date: Aug 2011
Location: Nor-Cal Coast
Posts: 10,455
Likes: 0
Received 0 Likes on 0 Posts
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
Default

Originally Posted by Brian71583 View Post
I put it in neutral and revved it up a little and couldn't duplicate the vibe or the squeal. I put it in drive and kinda went like I would if I wanted to power brake a car to load the drive line and still couldn't reproduce it.
It sure sounds like you are describing a U-Joint. I know it sounds a little goofy, But I liken it to the feel of having a fish on the line, the feel of the wiggle. Also the cherps and squeals would be well connected to the speed you are moving btw.
DFlintstone is offline  
Old 07-08-2012, 08:23 AM
  #5  
Member
Thread Starter
 
Join Date: Nov 2011
Location: Quakertown PA
Posts: 105
Likes: 0
Received 0 Likes on 0 Posts
Year: 2001
Model: Cherokee
Engine: 4.0
Default

Originally Posted by DFlintstone

It sure sounds like you are describing a U-Joint. I know it sounds a little goofy, But I liken it to the feel of having a fish on the line, the feel of the wiggle. Also the cherps and squeals would be well connected to the speed you are moving btw.
Or possibly a pinion bearing? Mine is wet around the front (pinion) pretty good. It wasn't a month or so ago and it seems to be getting wetter. The vibes feel like they are coming from the back but the squeal sounds like the front.

I guess I should get outta bed n go diagnose the balancer.
Brian71583 is offline  
Old 07-08-2012, 09:08 AM
  #6  
Member
Thread Starter
 
Join Date: Nov 2011
Location: Quakertown PA
Posts: 105
Likes: 0
Received 0 Likes on 0 Posts
Year: 2001
Model: Cherokee
Engine: 4.0
Default

I just went out and checked it as best I could. The belt is tracking straight and I couldn't really get a pry bar in there to well... but the best I could I couldn't get and play out of it.

I revved it up to around 3 grand and still couldn't get any noise or vibes out of it. The belt was tracking straight.

I also checked my u-joints for my rear drive shaft and couldn't feel any play.

The front drive shaft isn't in the Jeep right now.

I took a picture of the balancer to see if you guys see anything obvious that I am missing. To me it looks good minus the pan gasket leaking behind it.
Attached Thumbnails Harmonic Balancer????-balancer.jpg  
Brian71583 is offline  
Old 07-08-2012, 09:38 AM
  #7  
CF Veteran
 
DFlintstone's Avatar
 
Join Date: Aug 2011
Location: Nor-Cal Coast
Posts: 10,455
Likes: 0
Received 0 Likes on 0 Posts
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
Default

Oh, not to be a pest. You do know if the driveline is under any pressure you won't feel any movement. You gotta be in neutral or have one wheel raised up. Sometimes if you lay your finger on the gap between the ears and turn the drive line back and forth with the other HAND, you can feel play. Of course you have the engine off for this! ("Zero play!),(any movement is bad.) Anyway something to check, mine go often. If it IS a U-Joint, it will get worse soon enough!

Last edited by DFlintstone; 07-08-2012 at 11:41 PM. Reason: NO COMMENT!!
DFlintstone is offline  
Old 07-08-2012, 06:08 PM
  #8  
Member
Thread Starter
 
Join Date: Nov 2011
Location: Quakertown PA
Posts: 105
Likes: 0
Received 0 Likes on 0 Posts
Year: 2001
Model: Cherokee
Engine: 4.0
Default

Replaced the rear ds u joints n that seemed to fix the problem. Now I just need front ds u joints and a new rear lol
Brian71583 is offline  
Old 07-08-2012, 11:37 PM
  #9  
CF Veteran
 
DFlintstone's Avatar
 
Join Date: Aug 2011
Location: Nor-Cal Coast
Posts: 10,455
Likes: 0
Received 0 Likes on 0 Posts
Year: 90,84
Model: Cherokee
Engine: 4.0,2.5
Default

And the crowd cheers! Well done. Now the front will be easy
DFlintstone is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
cpnwrench
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
10
11-21-2017 12:19 AM
ROCKRIDGE 4WD
Vendor Showcase
1
04-07-2016 06:06 PM
64dodge
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
3
09-30-2015 05:50 PM
agrasso5567
Cherokee Chat
13
09-27-2015 03:08 PM
rusty_bucket
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
2
09-15-2015 08:19 PM

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

Thread Tools
Search this Thread
Quick Reply: Harmonic Balancer????


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description: