grinding noise under jeep cj7 - 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 CJ Forum > grinding noise under jeep cj7

Introducing MONSTALINER™ UV Permanent DIY Roll On Bed LineNEW!! HMF 50"-52" light bar mounting brackets!! Year End Clearance Sale! Save 20%

Reply
Unread 01-25-2012, 02:38 PM   #1
a1980jeepcj7
Registered User
1980 CJ7 
 
Join Date: Jan 2012
Location: Rochelle, Illinois
Posts: 4
grinding noise under jeep cj7

When my 80 cj7 is moving, it sounds like the tranny is grinding really bad. I have a 4 speed and believe its a t176 tranny but not sure. I put a new release bearing, input bearing, pressure plate, and clutch in it and its still grinding just as bad. any ideas?

a1980jeepcj7 is offline   Reply With Quote Quick reply to this message
Unread 01-25-2012, 04:09 PM   #2
82JeepCJ7
Registered User
1982 CJ7 
 
Join Date: Jun 2010
Location: Marysville, WA
Posts: 5,027
Hows your U-joints look?
__________________
Beat it to fit, paint it to match!

Wheel, Wrench, Repeat.
82JeepCJ7 is offline   Reply With Quote Quick reply to this message
Unread 01-25-2012, 04:18 PM   #3
jm708
Registered User
2014 JK Wrangler 
 
Join Date: Sep 2005
Location: sycamore, IL, IL
Posts: 280
Is it only when its moving? My starter was hanging up on the fly wheel. It did it most of the time stopped or moving. Just a thought.
jm708 is offline   Reply With Quote Quick reply to this message
Unread 01-25-2012, 06:12 PM   #4
dd4bama
Registered User
1985 CJ7 
 
Join Date: Oct 2009
Location: Fort Benning, GA
Posts: 196
Quote:
Originally Posted by 82JeepCJ7 View Post
Hows your U-joints look?
What are symptoms of bad u-joints? Also, can a weekender change those?
dd4bama is offline   Reply With Quote Quick reply to this message
Unread 01-25-2012, 06:27 PM   #5
BagusJeep
Web Wheeler
 
BagusJeep's Avatar
1981 CJ7 
 
Join Date: Jul 2009
Location: Bali, Indonesia
Posts: 4,685
if you get under the vehicle and grab each proposhaft you can feel if there is any play at all in the joints at the end. If so they need changing.

I have seen up to 1/2" of play in neglected joints but they make vibration, not grinding.

To change you need the following tools:

- a vise
- a hammer
- a pair of pliers
- some odd nuts and bits and bobs of metal
- spanners

Unbolt the driveshaft and remove, takes less than 5 minutes. If you jack the vehicle up put it on stands but most you can get under without jacking which is MUCH safer. Get it on the bench and you will see the joint is held into the yoke on the shaft with a circlip in each end. Prise out the clips. You now need to force it out and puting it in a vise with several nuts etc to exert force on it will get it to move, I just beat it with a hammer and punch on the ground though this takes longer on old joints.

When you have it apart the bearing cups will drop off and you may find a lot of black dust and metal filings. This was your bearing.

Getting it back together make sure you lube the joint well before you install. There are needle bearings inside most of them so make sure you do not let them drop out and load them up with good quality bearing grease and pressure grease them once on, lubing the sliding joint as well. Lack of grease is a cause of failure.

The only other thing to know is that the shafts are balanced and the two parts are on a sliding joint that will drop apart. Mark them first so you get them back on the same way round or it will vibrate.

With practice (yes, you will get practiced) you can get them apart and replaced in about 30 minutes with simple hand tools.

However the grinding noise may be something else.
__________________
BagusJeep lives in Bali, the Land of Temples.
With a Jeep every prayer counts.

1981 CJ7 258ci - Bagusjeep
1984 CJ7 258ci - Puthijeep
1981 J20 258ci - Gladys
1995 Cherokee 4.0 - CHEROKEE
BagusJeep is offline   Reply With Quote Quick reply to this message
Unread 01-25-2012, 07:00 PM   #6
dd4bama
Registered User
1985 CJ7 
 
Join Date: Oct 2009
Location: Fort Benning, GA
Posts: 196
Thanks for the information.
dd4bama is offline   Reply With Quote Quick reply to this message
Unread 01-26-2012, 06:51 AM   #7
Fatbook
Registered User
1983 DJ 
 
Join Date: Jan 2012
Location: clarksville, tn
Posts: 37
Cat!
__________________
Pro Patria-Ne Desit Virtus
Fatbook is offline   Reply With Quote Quick reply to this message
Reply

Tags
cj , clutch , grinding , noise , tranny

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.
Note: All free e-mails have been banned due to mis-use. (Yahoo, Gmail, Hotmail, etc.)
Don't have a non-free e-mail address? Click here for a solution: Manual Account Creation
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.


Thread Tools


Suggested Threads





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.