post #1 of Old 04-07-2013, 10:58 AM Thread Starter
zarnold
Member
1998 ZJ 
 
Join Date: Oct 2012
Location: Park Ridge
Posts: 360
Dana 44a - chipped teeth on the ring gear

So, I'm in the process of replacing the wheel bearings on my 44a, but found broken teeth on the ring gear. I'm not really interested in putting any money in the axle, and finding the chipped teeth makes it easier not to. So does anybody know how long it might last?

Attached Thumbnails
IMG_0633_r.jpg  
zarnold is online now  
post #2 of Old 04-08-2013, 04:51 PM
Foundrydude
Registered User
1995 ZJ 
 
Join Date: Jan 2011
Location: Flatsville
Posts: 2,690
Between 1 and 25,000 miles depending on luck and how hard it's stressed by the driver. You could probably do a couple low side holeshots on pavement and ruin it within eyeshot of where it's parked right now. Or you could drive like there's an egg under the throttle and it might outlive the truck

good luck with the project
Foundrydude is offline  
post #3 of Old 04-08-2013, 06:43 PM
gearheadnick
Registered User
1997 ZJ 
 
Join Date: Mar 2012
Location: Tunkhannock
Posts: 700
Well, the contact pattern between the ring and pinion is supposed to be in the middle of the teeth, so most of that damage shouldn't hurt, but that one tooth is iffy. I had a hot rod that ground up the spider gears into powder, and the ring gear had damaged corners. I cleaned out the axle, threw in some junkyard spiders, and kept on driving. After about a year the pinion bearing gave out in a bad way, totaling the axle.

I totally agree with foundrydude. Personally, I would clean out the axle real good and avoid burnouts. Drive it till it breaks. Meantime, go to a you pull it yard and get another axle cheap, overhaul it, and have it on standby.

My cylinder head overhaul: http://www.jeepforum.com/forum/f13/cylinder-head-r-r-picture-heavy-1348138/
My transmission overhaul: http://www.jeepforum.com/forum/f13/how-change-transmission-electronics-1560948/
gearheadnick is online now  
post #4 of Old 04-08-2013, 08:04 PM
CatSplat
Registered User
1994 ZJ 
 
Join Date: Jul 2009
Location: Calgary
Posts: 1,375
I'd drive it to the junkyard and back to pick up a replacement axle.

1994 5.9L ZJ, retrofitted UC package, NP242 swap, 17" JK Moabs with 32" BFG MT KM's.
The Jeep of Theseus
CatSplat is offline  
post #5 of Old 04-08-2013, 08:13 PM
kg6mov
Hears the voices
 
kg6mov's Avatar
1996 ZJ 
 
Join Date: Nov 2012
Location: Cupertino
Posts: 9,919
Yeh, time to pull a new one.

1996 ZJ Green Laredo V8, 2.5" OME and Bilsteins, 33's, Holes drilled in the roof.
1998 ZJ 5.9 - Junked
1984 F250, 460 BB, T19, work truck/future tow pig
1987 Mercedes 300D Turbo, the diesel daily, 30mpg in style

Quote:
Originally Posted by Texas ZJ1 View Post
I heard someone yell "mall crawler" from the back porch. I'll go see who said that. Be right back.
kg6mov is offline  
post #6 of Old 04-08-2013, 08:16 PM
zjosh93
Registered User
1993 ZJ 
 
Join Date: Aug 2010
Location: Austin
Posts: 1,956
I had a GM axle do that once, drove the chip through the bottom of the housing and drained all my gear oil in a nice line down the highway. A trail so clear and clean that my dad just followed it to the side street I pulled into. Drove it ten miles home and threw in a junkyard axle.

I'd replace it.
zjosh93 is offline  
post #7 of Old 04-09-2013, 05:58 AM
ratmonkey
R.I.P.
 
ratmonkey's Avatar
1997 ZJ 
 
Join Date: Dec 2006
Posts: 19,793
It's already beyond borrowed time.
Bet it howls like a dog on a full moon.

'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

ratmonkey is offline  
post #8 of Old 04-09-2013, 06:45 AM
durango-bob
Registered User
2000 TJ Wrangler 
 
Join Date: Jul 2008
Location: Sioux Falls
Posts: 3,102
I'd be concerned about what caused it. It looks like several teeth are damaged so you had something in the case that the teeth hit. It doesn't look like the chip from the tooth was big enough to cause the damage, but I could be wrong. With metal fragments in the oil, the bearings will not last too long.
durango-bob is offline  
post #9 of Old 04-09-2013, 07:43 AM Thread Starter
zarnold
Member
1998 ZJ 
 
Join Date: Oct 2012
Location: Park Ridge
Posts: 360
Thanks for the information guys! I've found a replacement at my local u-pull-it. I plan on just leaving it on the jack-stands until I swap it out.
zarnold is online now  
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



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
Trackbacks are Off
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome