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  1. TJ Wrangler Technical Forum
    I am in the process of rebuilding my 2006 65th anniversary edition TJ's front differential. I took the cover off my differential to find my pinon gear has a few chips in it. I am looking for recommendations on rebuild kits to do a complete rebuild. I believe it is a Dana 30, but i am not sure...
  2. XJ Cherokee
    So driving Saturday evening, on US 22, and going about 60pmh, I felt like I hit something or lost power for the blink of an eye and then began hearing this awful grinding noise, but losing any control in braking, speed, or steering. I was on a work trip and did manage to get to my overnight...
  3. Engines & Drivetrain
    Im definitely not an expert gear setter and my first attempt at this did not end amazingly but with everything i learned the first time and while working on it the second im at the point where the only thing that can help is someone with experience. I've set these gears enough times to lose...
  4. JK Wrangler Technical Forum
    I have a 2015 jk Willy’s with a 3 inch lift and 35 inch tires. It’s a daily but I need to regear it. I don’t do anything crazy so would I be looking at 4:10 or 4.56? I can’t seem to find the answer I’m looking for in the search bar. Thanks!!!
  5. Jeep CJ Forum
    I am currently Rebuilding a Dana 30 from a 79 CJ7 and am looking for advice on the Preload amount for the Differential Side Bearings. I am not asking about the Pinion Preload! The Dana Spicer Service Manual states that it wants 0.015” of shims greater than what is required to achieve Zero End...
  6. WJ Grand Cherokee Forum
    Hello! First post here, apologies if I missed anything obvious. I'm generally familiar with automotive concepts but I'm not an expert mechanic by any means. I've got a 2004 WJ with 193,000 miles on it, located in interior British Columbia. The rear differential has been making an oscillating...
  7. ZJ Grand Cherokee Forum
    I have been going to this single mechanic who take care of my Grand Cherokee 5.2 1997 for quite sometime now. Last thing he did was to change most important parts in my differential as the cracking noise was coming from everywhere. He said he changed most of the damaged parts and old ones...
  8. XJ Cherokee Technical Forum
    Hi Guys I have a Jeep Cherokee 2015 that needs a new rear differential Part number 68090612AG I have been quoted £1500 but have found a Jeep GRAND cherokee part on Ebay ( 6818473AB) My question is would that part fit my standard Cherokee? Ive asked the ebay seller and he says it does Any advice...
  9. Engines & Drivetrain
    My wife's 2013 Jeep, Grand Cherokee - Limited, 3.6L is about to leave her stranded on the highway. Extremely loud hum from the backend, getting worse every day. Took it in to Jeep, and they said it needs a new rear differential. ($3500 repair). Metal flakes in the oil. Being handy, I thought...
  10. WK2 Grand Cherokee Forum
    Looking for some feedback from you experts out there…. Just put on new tires and vibration still there at highway speeds. Accelerating, it goes away. Putting it in neutro, still there. Possible causes: — It feels like an unbalanced driveshaft, but… if vibration stops when accelerating, then it...
  11. WJ Grand Cherokee Forum
    I've noticed a clunking noise that sounds like it is somewhere in the front end. I am suspecting it is the differential because it gets worse with 4wd engaged. It is not grinding or whirring so I don't think its a bearing. It is tied to wheel speed and not engine rpm and is approximately the...
  12. KJ Liberty Forum
    I'm hoping you guys can help me figure out my part mystery. I've got a 2006 3.7 with the 3.73 front diff. I went off roading with some friends and cracked the passenger side axle housing that mounts in the diff. That axle housing has a flange on the end and theres a bracket that runs...
  13. WK Grand Cherokee & XK Commander Forum
    Hi, I have a problem with a hard noise*(like knocking) when coasting with my 2008 CRD Jeep GC (Quadra Drive II). I suspect it to be the front differential (as it is where the noise comes). It doesn't make that noise always. It just happens randomly when coasting. I changed the front...
  14. Jeep CJ Forum
    The surface I drive on with the least traction is icy roads. I'm making safety more of a priority these days.. I want to choose my differentials based on the least traction situation (ice and/or black ice). I'll start by saying the appropriate TIRES are probably the most important factor. I get...
  15. XJ Cherokee Technical Forum
    Hi folks, appreciate assistance as always. I'm rebuilding my 8.25 diff, had a whir that I diagnosed to a bad outer pinion bearing and race - both were pretty pitted. I've replaced all bearings, have new seal, new pinion nut/washer. I also installed a Spartan locker and a crush sleeve...
  16. YJ Wrangler Technical Forum
    Hello Ladies & Gents, I've had myself a problem recently. (I'm learning, so please don't berate me for my mistake. I know I messed up.) When replacing a yoke & pinion seal on my rear axle, I screwed up/ordered the wrong seal, resulting in the oil leaking out of my diff while driving. What...
  17. WK Grand Cherokee & XK Commander Forum
    Short version: If your rear pinion seal is leaking, change the diff fluid when you replace the seal Looking for opinions on if I actually need to change the rear end and if so, what do people suggest? Long version: The ring and pinion has always been loud since I got the Jeep with around 87k...
  18. ZJ Grand Cherokee Forum
    '97 ZJ Laredo 2WD w/206000 miles. Driver's rear is making a distinct bearing noise and I have a whine from the differential. I might as well do a rebuild while I'm opening the differential for the axle bearing and know I won't have to open it again soon. I'm just getting confused on what...
  19. XJ Cherokee Technical Forum
    I pulled this axle assembly from a '98 XJ in the salvage yard. Dana 30 HP, just pulled the cover, the stock fill plug is obviously magnetic with a bunch of residue, the odd area is where I touched it. Also, ^ and < markings on the bearing caps and housing makes me think these gears, or the...
  20. Engines & Drivetrain
    2002 WJ w/QuadraDrive 30 I'm getting some small bidding mostly when I'm tight turning (like pulling out of the driveway) it does it more when turning left. But now over the past week or so, it feels like doesn't roll freely like it should when I first take off. Like something is holding the...
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