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Stock JK TechBulletin board forum regarding issues with OE (original equipment) components of the Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) such as factory suspension parts, engine, transmission, body parts, interior fixtures and the on-board computer.
First, let me thank you for taking the time to read the post and hopefully respond.i have been a Wrangler owner for years and we just bought my wife her first wrangler. It is an unlimited sport and certified Jeep preowned so still under bumper to bumper warranty ( just bought it last Saturday). Today I changed her oil and both differential fluids. The front was fine with just a small amount of fine shavings attached to magnet. The back had me surprised when large metal chunks were attached to the magnet. So many that some fell off the magnet and into catch pan. I am wondering if this is something I should call service department tomorrow and tell them about. I have attached photos with the chunks. I have changed my fair share of diff fluid and none has ever had this many large chunks. I am hoping someone can chip in and verify that I should call tomorrow. Thanks so much in advance. Oh, the Jeep has 40,000 miles on it currently.
I'll second that.
Looks like they may be spider gear teeth.
Tell them, if they remove the differential cover to have a look, you want to look, too, and take some pictures.
Thank you that’s a great idea! I have used this dealer and purchased the last 5 Jeeps from them I trust them but I want to see how bad it is. Thanks again.
From your pictures.. looks like teeth off a side gear in the Diff... Take them & the old diff gear lube with the Jeep to the dealer.. Certified Pre-Owned covers with a $100 deductible. You are probably experiencing clunking noises turning corners when starting from a stop.
They should replace your diff gears, and throw in a master rebuild kit. You may have to fight with them over that. If they insist "not covered", I'd pay for the kit and have them use it, even if it means you pay added labor. This could just as easily turn into a "you can't go anywhere because your differential is locked up" event when you're a $2,000 tow from the nearest help.
Last edited by Mark Doiron; 02-10-2020 at 12:57 AM.
That is pretty ugly . I think we're all working under the assumption that these are factory gears. You don't have any indication that the axles have been regeared by previous owner right? It's not unheard of with factory gears, but more common to see this after a re-gear. I do know someone that had factory gear teeth break on a jeep that was hardly offroaded. I couldn't believe the pictures when he showed me. I only as about a regear as that would be a clear "out" on the warranty coverage.
I do recall reading on Wrangler Forum several posts about side gears breaking - most claimed to have factory limited slip diffs. You have a Certified Pre Owned warranty; recommend return to the dealer you bought from and let them take necessary action.
02-09-2020, 03:25 PM
Differential chunks
. I think we're all working under the assumption that these are factory gears. You don't have any indication that the axles have been regeared by previous owner right? It's not unheard of with factory gears, but more common to see this after a re-gear. I do know someone that had factory gear teeth break on a jeep that was hardly offroaded. I couldn't believe the pictures when he showed me. I only as about a regear as that would be a clear "out" on the warranty coverage.
