I have known for some time that I really needed to protect my Vapor Canister (many folks call this the "Evap"). There are many excellent Evap Skids. I have friends with Evap-only skids from River Raider, Benchmark-Designs, Rock Hard 4x4, and many others. They are all good designs and each have their own strong points. I would have been happy with any of them. However, I plan on adding an onboard air system, which helped me quickly settle on River Raider's combination 2.5 Gallon Air Tank + Evap Skid.
Like all products built by River Raider this combination Skid is built like a tank. It is solid and definitely provides you with a great way to protect both an Air Tank and an Evap Canister. This Skid requires very few tools to install.
Lets start by taking a quick look at the Evap in its normal location.
Before you remove the Evap Canister take a moment to study the orientation of the Evap Sensor. The sensor is the white plastic piece with a hose going into it. The sensor also has an electric plug on one side of it. The orientation is critical because there is a gravity switch within it that is used by the vehicle to determine if a rollover has occurred, in which case it will shut certain things down. Failure to maintain the same orientation, after relocating the Evap Canister, will cause warning lights to appear on the dash.
Removing the Sensor is quite easy once you know what to do. On the bottom edge of the sensor is a tab, which needs to be gently bent back a small amount with a small flat blade screwdriver.
Here is a shot that shows the tab once the sensor has been removed.
Here is a quick shot of what your Evap Canister will now look like just prior to being removed and relocated.
Remove the other hose that is connected to the Evap Canister. The hose uses a somewhat unique connector that looks complicated but is rather easy to release. The connector has a small plate (catch) on opposite sides. A small screwdriver works well to depress the little catch. Make sure to have a small flashlight to help illuminate the connector so you can see what you're doing.
Okay, now it is time for the fun stuff. It is time to remove the Evap Canister and the mounting plate it is attached to. There are just three 16mm bolts holding the mounting plate onto your Jeep. Two bolts are at one end and a single bolt at the other. Here is a picture of the mounting plate and Evap removed from the Jeep.
It is now time to remove the Evap Canister from the mounting plate. This is very simple and only requires a small flat blade screwdriver. There is a small tab (metal finger) that needs to be gently pried upward, which will then allow the Evap to be slid off the mounting plate.
Here is picture of the mounting plate once the Evap Canister has been removed
Now things start getting interesting. You need to trim (cut) the mounting plate. There is a lot of excess metal on the plate which is no longer required. To save you any measuring just take a look at the RED
cut-lines in this next photo to see where you should make your cuts.
We're getting to the good stuff. Now that you have cut off the excess metal it is time to drill a couple 1/4" holes in the mounting plate. The instructions from River Raider tell you to hold the mounting plate up to the Skid and mark the location of the holes. I'll save you some angst and aggravation. The two holes need to be drilled exactly 5" apart (center to center) from each other. Also, do not drill two holes as suggested, rather, drill two slots. This will give you a ton of maneuverability when doing your final positioning. I have used RED
to show you approximately where to drill the two slots. Just remember the two slots should be 5" apart.