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Yes for DEF protection Plate 61 100.00%
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  #25  
Old 04-23-2014, 12:32 AM
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Re: Vulnerable DEF injector wiring!

I crawled under my Limited ORA2 and looked at the situation. I don't think a solid plate is going to be a good idea. The DPF sits next to the injector and a solid shield is going to create heat issues.

There ia an unused bracket to the rear on the frame rail that could serve as a rear attachment point. The frame rail has a few holes that could be used for forward attachment also. A piece of 10 gauge steel cut to size and heavily perforated to allow air flow would work well. I am concerned that heavy mesh wire would allow a stick to go through. The proposed shield would need to have a relief curve in it to keep from pinching the cable and hose that crosses under the frame. The frame holes near the cables are blocked so rerouting through isn't a good option.

Anyone have any other ideas?
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  #26  
Old 04-23-2014, 02:03 AM
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Re: Vulnerable DEF injector wiring!

2014 Grand Cherokee - DEF parts diagram - see attached PDF file.
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File Type: pdf 2014_wk2_DEF_parts.pdf (95.0 KB, 180 views)
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  #27  
Old 04-23-2014, 02:03 AM
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Re: Vulnerable DEF injector wiring!

Thanks for that SITREP.
Quote:
Originally Posted by ExcursionDiesel View Post
I am concerned that heavy mesh wire would allow a stick to go through.
I am not sure that your stick fear is entirely rational. The odds of one being oriented vertically to go through the mesh and having the vehicle come down on top of it seems pretty low. If you high center on a gnarly root and that punches a hole through the mesh and damages the DEF injector, well, not sure a skid plate would have helped either.

Even if protection made of expanded steel (heavy wire mesh) was only an 80% solution I'd still take that over the default setup. Anyway I would say don't rule it out based mainly on a fear of sticks making it through.
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  #28  
Old 04-23-2014, 07:57 AM
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Re: Vulnerable DEF injector wiring!

Is there any realistic chance that the DEF components will be more protected or better routed on the 2015 models?
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  #29  
Old 04-24-2014, 03:28 PM
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Re: Vulnerable DEF injector wiring!

Does the Urea Skid Plate - #16 on the parts list above, cover the vulnerable area? If not, what is it designed to protect?

Just picked up our Limited 4x4 EcoDiesel last week and am learning a lot from this forum. Love the truck so far.

This seems like an issue that Jeep ought to have an easy fix for!
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  #30  
Old 04-24-2014, 04:18 PM
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Re: Vulnerable DEF injector wiring!

No, it appears it does NOT as it is the skid plate for the Urea tank at the rear of the vehicle.

Back to square one......
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  #31  
Old 04-24-2014, 04:39 PM
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Re: Vulnerable DEF injector wiring!

Quote:
Originally Posted by philbytx View Post
No, it appears it does NOT as it is the skid plate for the Urea tank at the rear of the vehicle.
I assume that the Urea skid-plate is NOT standard on EVERY Diesel, right? If it isn't, it might still be a good idea to get one...
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  #32  
Old 04-24-2014, 06:52 PM
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Re: Vulnerable DEF injector wiring!

The skid plates are on the ORA2 equipped vehicles. Not sure if ORA1 includes them.

It is now a verified fact that there is no factory solution for protecting the DEF injector and wiring. At least one owner has fabricated a wire mesh shield. I've suggested a 10 gauge perforated plate and located some attachment points. So the discussion should shift to a best solution. Any ideas?
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  #33  
Old 04-24-2014, 07:57 PM
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Re: Vulnerable DEF injector wiring!

Using the attachment points you identified, would the only bend in the plate need to be the one you described to avoid pinching the hose /cables? Also, the attachment points you identified all seem to be on the frame rail. Are there any other potential points to give it some lateral stability?
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  #34  
Old 04-24-2014, 09:28 PM
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Re: Vulnerable DEF injector wiring!

Can anyone find a shot of the underbody that shows the routing of that entire hose/harness from the DEF tank to the injector? Is it possible to re-route so that it crosses over (or through) the frame rail closer to the rear of the vehicle to potentially help eliminate the problem?

Still seems like a small skid plate will be necessary to protect the brittle plastic DEF injector itself, though, but at least re-routing might keep the harness from getting snagged by brush.
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  #35  
Old 04-25-2014, 12:08 AM
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Re: Vulnerable DEF injector wiring!

You are correct about the mounting holes I saw. I didn't see any other holes near the passenger side but I'll look a closer look tomorrow. The plate definitely needs support across its width as well. I am still concerned with baking the wiring and connectors if the plate traps heat.
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  #36  
Old 04-25-2014, 11:00 AM
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Re: Vulnerable DEF injector wiring!

Someone just needs to design something up in CAD that can be cut on a waterjet or plasma table. Make it bolt on (as much as possible) and add some cool looking vent holes and have it powder coated black.

Next figure out how many you will need to sell and at what price to the rest of us to make yours net cost free.

Then post the cad file up here for the rest of us so you don't have to be the middleman...unless you want to be.

Who doesnt like bad ass waterjet cut powder coated cool looking skid that we hope will never been seen?

Please put me on the list for the first run.
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