UNDER the JL WRANGLER RUBICON : A Look at Suspension / Steering Components & MORE!

wayoflife

Administrator
Staff member
UNDER the JL WRANGLER RUBICON : A Look at Suspension / Steering Components & MORE!

One of the first things that Cindy and I did soon after bringing home our brand new, Jeep JL Wrangler Rubicon Unlimited, was rack it up so that we could get a good look at everything underneath and while everything was still clean. Certainly, it's a lot easier to photograph and handle things like suspension and steering components, when dirt and mud isn't falling in your face. For those of you who are interested, these are the pics we took and hopefully, they'll give you a better idea of what you can expect to find, under a JL Wrangler.

Going up...
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REAR END
Okay, these first set of shots are all from the rear end and document in detail, some of components you'll most likely be working with there when lifting your JL Wrangler. First up, a total overview.
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A couple of shots that give you a better look at the JL Wrangler muffler and its all new Dana M220 rear axle.
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A side shot of the muffler.
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While similar to a Dana 44, the shape of the Dana M200 is definitely new and unique to it.
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This passenger side 3/4 shot of the rear end shows how the rear shocks are now mounted on the outside of the frame rails. A nice improvement over the JK setup.
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It's a little hard to see but here's a closer shot of where the shock is mounted on the frame rail. Nice thing is, it now uses a through bolt instead of a bar pin.
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Here's a closer look at the passenger side rear coil, track bar frame mount, bump stop, shock and sway bar.
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A view looking across the length of the JL Wrangler rear track bar. As you can see, it's bigger, beefier and shaped differently than the old JK.
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And, this is the driver side so that you can see the bigger, beefier and raised axle side track bar mount.
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3/4 shot of the rear from the driver side.
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We ordered our JL Wrangler with the tow package and taking a step back, you can see what the hitch receiver looks like mounted under the rear bumper.
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Here you can see that unlike the JK before, the JL Wrangler tow package comes with a weatherproof, standard 7-Pole and 4-Pole Trailer Connector Socket.
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Being that we do have a Rubicon, it did come with a nice red J-hook style tow hook mounted on the driver side frame rail.
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MIDDLE
This is a shot looking forward at the belly of the JL Wrangler from the rear axle. As you will see, the EVAP canister - also known as, the 'rock target', has been relocated out of the way and up behind the passenger side rear fender liner.
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As you can see, the JL Wrangler exhaust system still utilizes a resonator and the rear drive shaft is still an rzeppa design, just like the old JK.
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Shot of the rzeppa CV joint at the standard cut, Dana M220 pinion. As you can see, the CV boot retainer is now flared.
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Although the housing has been redesigned, Rubicon model JL Wranglers still have an NV241OR Rock-Track transfer case.
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Shot of the rzeppa CV joint at the transfer case output shaft.
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Here are a few shots that show what the JL Wrangler transfer case skid plate now looks like.
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A few more shots of the transfer case skid plate being that it really takes a beating.
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Even more than the transfer case skid, the gas tank skid plate is without question that takes the brunt of all abuse out on the trail. While the factory skids are still serving their purpose on our 2 JK's, they are beat to all hell and it's nice to see that Jeep has redesigned this skid to have more structural embossing and ribbing to help reinforce it.
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View from the middle of the JL Wrangler looking back toward the Dana M220 rear axle.
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Being that we ordered our JL Wrangler with the new 8-Speed ZF automatic transmission, it came with a skid bar to help protect the sump pan. You can see it here in this pic along with the exhaust loop and redesigned exhaust cross over that allows the front drive shaft to have a greater amount of droop without tearing the slip shaft boot.
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Another shot of the JL Wrangler transmission skid bar from the other side.
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A closer shot of the JL Wrangler exhaust loop from the other side.
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Just beyond the transmission cross member and exhaust hanger, you can just see the front drive shaft output shaft. As you can see, it is still an rzeppa CV just like on the JK.
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Looking toward the outside edge of the JL Wrangler, you can see the Rubicon rocker sliders are still mounted to the pinch seam and to the bottom of the tub.
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Stepping out from under the JL Wrangler, you can see that the rear fender wells come with pinch seams that have already been trimmed or angled back so that bigger tires can be run without making contact with them.
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FRONT END
Once again, just like the JK, the JL Wrangler front drive shaft utilizes a u-joint bolted up to a pinion flange on the Dana M210 front axle.
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Here you can see that the Dana M210 is a high pinion axle and that the amount of caster it has allow the front drive shaft to almost be in line with the pinion even at a full droop.
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Here are a few shots of what a lot of people are still unsure of on the JL Wrangler - the FAD or, front axle disconnect motor.
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Designed to disconnect the front axle when driving in 2WD, the FAD was incorporated into the design of the Dana M210 front axle to help improve fuel economy.
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The fact that it has its own skid plate indicates to me that the FAD needs to be protected. Fortunately, it is an electric motor as opposed to the old school vacuum CAD's of yesteryear and hopefully, it'll hold up to water better than the electronic sway bar disconnect.
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Moving over the passenger side front wheel, you can get a good look at the JL Wrangler lower control arm, red Rubicon shock which is not secured to the frame using a through bolt instead of a stud, the coil beyond it and the new beefed up Dana M210 end forging or what most people refer to as the "axle C".
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Here's a better shot of the JL Wrangler front shock upper frame mount with through bolt.
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A 3/4 view of the passenger side axle C, the new Dama M210 aluminum knuckle, ball joints, axle shaft u-joint and all new 2-piston brake caliper.
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A closer view of the 2-piston brake on the driver side.
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Looking up at a JL Wrangler, 3.6L V6 Pentastar Engine. As you can see, it looks completely different from a 3.6L in a JK and the oil pan is even more out of the way and smaller too!
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More than the tiny oil pan, the reason why I'd want to install some kind of armor here is to protect the transmission cooler lines from renegade branches and roots on the trail.
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Here's a shot of the motor mount.
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The JL Wrangler comes with an all new steering box and it is now made out of aluminum.
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Going way up front, you can see the Rubicon electric sway bar disconnect sitting just above the air dam skid plate.
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To help get better lighting on everything, turned our JL Wrangler Rubicon around so that it was pointing toward the garage door. Also, to help get a better look at all the steering components, I went ahead and removed the air dam skid plate. Here's a few shots of what it looks like up front without it.
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With the air dam skid removed, you can get a clear shot of the electric sway bar disconnect motor, the sway bar itself, the sway bar end links, the pitman arm, drag link, track bar, tie-rod, steering stabilizer, axle C's, knuckles and of course, the all new Dana M210 front axle. You can even see how the front drive shaft now has a clear path downward.
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Close up look at the electric sway bar disconnect motor.
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Close up look at the driver side coil and sway bar link. Notice how the lower spring perch now comes with an isolator that's indexed for the coil.
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Here's a closer look at the new JL Wrangler tie-rod end with adjuster on the driver side.
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View of the driver side steering knuckle with the lower ball joint in view.
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On the passenger side, you can see the all new beefy tube designed drag link with forged ends tying into the knuckle just above the tie-rod.
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A look at the passenger side coil. Again, notice how it has an indexed lower spring perch isolator.
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The steering stablizer is still mounted low and is exposed to damage but the way it's mounted up has been improved. As you can see, it is now mounted on the axle just past the FAD unit and is secured to the passenger side steering knuckle right at the tie-rod end.
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DIAGRAM OF SUSPENSION & STEERING COMPONENTS
For those of you who are new to Jeeps or working on one with coils and a 4-link suspension system, I have created the following color coded diagram to help you identify most of what you'll be working with on a JL Wrangler when installing a lift or making adjustments to your steering and alignment.

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There's a lot less you need to work with in the rear but this diagram outlines some of the components you will be working with there.
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I hope the photos and information I've provided in this post is helpful to you. Please let me know if you have any questions. :cool:
 

JTCO

Meme King
Wow. That's a ton of info. Thanks for taking the time to post all that up. It will be helpful.
 

wayoflife

Administrator
Staff member
Wow. That's a ton of info. Thanks for taking the time to post all that up. It will be helpful.

Thanks! Been working on this for a while now. Got a JL Journal video to go with it coming soon too :yup:
 

JLU_RUBI

New member
Good pics. Does anyone know or have pictures of the 2.0 turbo exhaust routing? That’s the drivetrain I’m planning on ordering and I’m interested to see if the “loop” is gone. That loop on the pentastar is an issue for a lot of people. Might have ripped mine loose on my ‘12 before....


Sent from my iPhone using JL Wrangler Jeep Forum mobile app
 

wayoflife

Administrator
Staff member
Thx again for consistently providing excellent write ups!! On a side note, curious how you like the blind spot monitoring system, pros/cons?

Glad to hear they're helpful to you. Regarding blind spot monitoring, we didn't get the Safety Group with our JL. Sorry.
 

wayoflife

Administrator
Staff member
Good pics. Does anyone know or have pictures of the 2.0 turbo exhaust routing? That’s the drivetrain I’m planning on ordering and I’m interested to see if the “loop” is gone. That loop on the pentastar is an issue for a lot of people. Might have ripped mine loose on my ‘12 before....

That's funny, never had a problem with the loop on our 2012 JK. We did have to flip it when we installed an EVO long arm but that's about it.

The 2.0L doesn't have the loop. Here are a couple of pics to show you what it looks like underneath it.
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That being said, what it does have is a bigass battery where the EVAP canister used to be.
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JLU_RUBI

New member
That's funny, never had a problem with the loop on our 2012 JK. We did have to flip it when we installed an EVO long arm but that's about it.

The 2.0L doesn't have the loop. Here are a couple of pics to show you what it looks like underneath it.

That being said, what it does have is a bigass battery where the EVAP canister used to be.

Thank you for that. Yeah I ripped mine loose and my buddy did is as well. $900 to fix. Ended up putting a skid plate on that covered that loop. Its amazing to me that they do so many things well with the wrangler and then do goofy stuff like zero protection for the oil pan. The aftermarket is a beautiful thing.
 

JAGS

Member
Great pics. Dig the outlines of the suspension components. The ones you did for the JK is what first showed me the suspension components of a wrangler. I had never known any of that before getting my first jeep in 2012. (still barely know all of the components, LOL) Anyways, I would imagine the JL is going to bring even more people into the wrangler world and more into offroading. Those outlines will be great for all of us, again.

Thanks for posting all this up. :yup::thumb: Tony will still be mad about the little bit of dirt that was there. :cheesy:
 

Sierra Nevada

New member
Nice pics! New to Wranglers. Not sure exactly where the electronics are at for the forward and aft lockers. Saw the sway bar disconnect electronics. Nice. My Red Rubi JL will be delivered in roughly 5 more wks. These photos really help a lot to prep for an underbody inspection at the dealers. :thumb:
 

millercreek

New member
My red JLUR arrived today. I'll be picking it up tomorrow. After looking at your beautiful white JLUR I'm excited to say the least. I'll be watching your mods closely. I love what Cindy and you have done to your last 2 JKU's. Thanks for all the information you pass along.
 

Trail Bud

Member
Look like the tow electric on the bottom of the rear bumper could get smashed on a drop off.

Love the diagrams of the front and rear! Nice job.
 

jlvinny

New member
Hi Eddie
Have you heard anything about the turbo diesel coming out yet do you have any more info on it I can’t even get a spy shot that they are even working on it. It’s like it’s asleep I hope somebody wakes it up soon I’m gonna go out of my mind!!If you find anything out please let me know!!
Ps nice picks
Thanks Vinny


Sent from my iPhone using JL Wrangler Jeep Forum mobile app
 

wayoflife

Administrator
Staff member
Thank you for that. Yeah I ripped mine loose and my buddy did is as well. $900 to fix. Ended up putting a skid plate on that covered that loop. Its amazing to me that they do so many things well with the wrangler and then do goofy stuff like zero protection for the oil pan. The aftermarket is a beautiful thing.

I don't know, the oil pan practically sits on top of the axle and unless you really suck at picking good lines or refuse to use a spotter, the odds of hitting and hard enough to leave you high and dry is really pretty small. If anything, I'm more trouble by the transmission cooler lines being so exposed and have seen where renegade tree branches or roots have caught and pulled the out. But, like you said, aftermarket is a beautiful thing.

Great pics. Dig the outlines of the suspension components. The ones you did for the JK is what first showed me the suspension components of a wrangler. I had never known any of that before getting my first jeep in 2012. (still barely know all of the components, LOL) Anyways, I would imagine the JL is going to bring even more people into the wrangler world and more into offroading. Those outlines will be great for all of us, again.

Thanks for posting all this up. :yup::thumb: Tony will still be mad about the little bit of dirt that was there. :cheesy:

LOL!! Glad to hear that posts like these have been helping you for quite some time now :cool:

Thanks for posting this! Excited to see the video!

Cool! We should have it up by tomorrow :yup:
 

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