Serenity 2.0 Build
- Thread starter Dynamic
- Start date
Got Bored over quarantine added the S&B CAI that has multiple configs so i can seal it up for off-road but leave it open for daily
(Cant find pics and don't have jeep so Pic later)
Added the Diabolical SlipStream
Was told the breaks needed replaced and we don't replace we upgrade so Dynatrac Progrip Setup went on
Huge improvement over stock cant wait to test it out in more off camber situations
And Some Dirty Dog Netting
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(Cant find pics and don't have jeep so Pic later)
Added the Diabolical SlipStream
Was told the breaks needed replaced and we don't replace we upgrade so Dynatrac Progrip Setup went on
Huge improvement over stock cant wait to test it out in more off camber situations
And Some Dirty Dog Netting
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Now to the Bad Current .... problem :wrench
Rear End Blew - was towed to dealer they quoted 1850 + i had to acquire parts since they are not stock (Never was the goal to have them do the work but thats where we ended up
A few Days later we (Uncle and I) Were able to go rescue her from the dealership and she went for a ride (Bad ideas cause now i want a tow rig to take it places
Current Status, everything pulled that's broke
Culprit ... Pinon is toast no idea what happened here like i said havnt been able to wheel in about 2 years so... Currently working through the Yukon Y.E.S. Warranty process
Gears got chewed up in the process
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Rear End Blew - was towed to dealer they quoted 1850 + i had to acquire parts since they are not stock (Never was the goal to have them do the work but thats where we ended up
A few Days later we (Uncle and I) Were able to go rescue her from the dealership and she went for a ride (Bad ideas cause now i want a tow rig to take it places
Current Status, everything pulled that's broke
Culprit ... Pinon is toast no idea what happened here like i said havnt been able to wheel in about 2 years so... Currently working through the Yukon Y.E.S. Warranty process
Gears got chewed up in the process
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Upcoming Projects (Repairs and some Upgrades)
Prior to rear diff complete failure i had noticed my Steering stabilizer was very sloppy and loose inspection shows its blown. Falcon out of warranty and none in stock anywhere so ordered Fox so thats in the pile waiting to go in
-FOX 2.0 TS STEERING STABILIZER
-Gears / Gear Kit Ect - Pending Y.E.S. warranty process
Springs have kinda been trash for awhile and have sagged hard but expected that from Teraflex
-4" EVO Plush ride coils all around
And since it was all torn apart and prices were good for BF Sales I am upgrading the rear driveshaft to match the front
-ADAMS EXTREME DUTY SERIES REAR 1310
Also i got this in a trade for basically free so gotta clean it up aquire a remote and the mounting parts for the hardrock bumper but i finally have a winch i guess
Prior to rear diff complete failure i had noticed my Steering stabilizer was very sloppy and loose inspection shows its blown. Falcon out of warranty and none in stock anywhere so ordered Fox so thats in the pile waiting to go in
-FOX 2.0 TS STEERING STABILIZER
-Gears / Gear Kit Ect - Pending Y.E.S. warranty process
Springs have kinda been trash for awhile and have sagged hard but expected that from Teraflex
-4" EVO Plush ride coils all around
And since it was all torn apart and prices were good for BF Sales I am upgrading the rear driveshaft to match the front
-ADAMS EXTREME DUTY SERIES REAR 1310
Also i got this in a trade for basically free so gotta clean it up aquire a remote and the mounting parts for the hardrock bumper but i finally have a winch i guess
Way the failure on the Pinion is pretty amazing. what ratio 4.88 or 5.13? Love to see a close up or two of the pinion teeth damage.
Had a Set of Yukon Gears in the back of the Red Jeep. During the failure analysis it was very clear that there was a void space at the root of the tooth that broke. The broken piece was about 3/4 of an inch long. The rear gears were installed in 2018. Replaced with Motive Gears from ECGS, gears alone were only $205.00 plus shipping. ( note use UPS it is a 1 day delivery to VA)
Had a Set of Yukon Gears in the back of the Red Jeep. During the failure analysis it was very clear that there was a void space at the root of the tooth that broke. The broken piece was about 3/4 of an inch long. The rear gears were installed in 2018. Replaced with Motive Gears from ECGS, gears alone were only $205.00 plus shipping. ( note use UPS it is a 1 day delivery to VA)
I am not with the Jeep atm but your pieces sound an aweful lot like this
They are 4.88. You say 2018 about when in 2018 was your install out of curiosity. Cause my buddy had exact same gears done same time and he had the very same problem. Got me thinking maybe a bad batch
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They are 4.88. You say 2018 about when in 2018 was your install out of curiosity. Cause my buddy had exact same gears done same time and he had the very same problem. Got me thinking maybe a bad batch
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Rob's gears didn't look nearly as bad as yours, but that could just be that he caught his long before they could get bad... The timing on the regears does sound pretty coincidental though! If there are visible voids/bubbles under where your teeth were on the pinion, that would definitely point to casting problems with a batch of the Yukon gears, But your pinion got chewed on by the ring gear so much, it might have erased all evidence of a bad casting now...
I'm guessing if your failure was the same as Robs the the initial broken tooth/teeth didn't fall through to the bottom of the differential housing as cleanly as his, leading to a lot more secondary damage...
I'm guessing if your failure was the same as Robs the the initial broken tooth/teeth didn't fall through to the bottom of the differential housing as cleanly as his, leading to a lot more secondary damage...
Couple snaps of the offending tooth. You can clearly see the grain structure is not right. Please feel free to use these snaps and share with Yukon. This is leading to a bad batch.
Bought these is Jan/Feb of 2018. This makes me wonder about the front gears now. Ugh!
Rob
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Bought these is Jan/Feb of 2018. This makes me wonder about the front gears now. Ugh!
Rob
Sent from my Moto Z (2) using Tapatalk
So, I see a draw bar in your picture with the rear disassembled. What do you tow and what does it weigh? Reason I ask , is my axles issues started after my trip to WY. I was towing my little 700# trailer on the highway. it might be possible that with big tires deep gears and a load that these bad batch of pinions are giving up the ghost.
Just a thought.
Cheers
Just a thought.
Cheers
So chatted with a friend who ones a off road shop... Had several Yukon gear sets going bad. Round the 2018 time frame Yukon moved gear production to , you guessed it, China. Quality control is not their strong point.
Gears that are still American made are Revolution and Motive.
Makes my nervous since I just installed Yukon bearing in my diffs....
We need to take back America from the Chinese......
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Gears that are still American made are Revolution and Motive.
Makes my nervous since I just installed Yukon bearing in my diffs....
We need to take back America from the Chinese......
Sent from my Moto Z (2) using Tapatalk
zuke said:
So we got the pinon out today and they took some fancy magnify glass to it and feel confident it was a bad cast. I know enough to be dangerous but they mentioend about there being very specific "Spots" that were different. Dunno if this is a better pic or not
But some other points that could lead to a bad known batch. Once i gave them my serial and YES info they didnt ask any other questions and did not require me to send in the old gears they just overnighted fresh ones.
Back running under her own power again. Still a few things to do in the coming months but atleast i can drive it again that was the important part
Rear end completely tore apart and fully cleaned after the ring and pinon exploded.
New replacements installed.
Drive shaft was starting to leak and didnt look great so upgraded to an Adams Rear 1310 it was on the list and now was as good a time as any.
Took the front cover off to change fully and did a full inspection of gears and everything looked good up there so cleaned and changed fluids.
Also greased all the things that needed greasing and Changed the engine oil.
Phase 2 (thanks work bonus). The steering stabalizer was blown and i was sure the tie rod was bent. Then i figured i would do the drag link since it was the only other piece not upgraded. When i was talking to NR4x4 they had a complete package to include the tierod / dragling / track bar and trackbar frame reinforcement brace so i just went all in will just sell the terflex monster bar to recoop a small bit
Clearly much beefer
Yeti XD pro Alluminum
All the pieces
The Track Bar Reinforcement Brace Yes i know the springs are shot Evo Plush coils just came in last week need to make time to toss them on yet.
Inner View of the brace thats a significant enforcement
Currently assembled - The upper skid plate needed to be trimmed to fix the attinuatior but it all fits nicely
Clearly much beefer
Yeti XD pro Alluminum
All the pieces
The Track Bar Reinforcement Brace Yes i know the springs are shot Evo Plush coils just came in last week need to make time to toss them on yet.
Inner View of the brace thats a significant enforcement
Currently assembled - The upper skid plate needed to be trimmed to fix the attinuatior but it all fits nicely
