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Unread 05-10-2010, 12:12 PM   #1
JeffreyCharles
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1976 CJ5 
 
Join Date: Feb 2009
Location: Vallejo, CA
Posts: 568
Charcoal canister filter replacement

After reading up on a number of threads regarding fuel vapor smells/leakage - particularly Mike Romain's postings - I decided to give a shot at replacing the filter at the bottom of my canister while I was doing an oil change over the weekend. Picked up a replacement filter from Napa (part #2998 - Filter Breather) for about $3, pulled the canister up and flipped it over and was initially stumped as to how to remove the old filter. It quickly became obvious one simply pulls it out past the plastic molding across the canister bottom. Mine wasn't attached or held in place by anything other than that molding (a lip around the edge of the canister bottom and a thin bar across the middle).

At first I just kinda poked at the old filter (which was filthy) and then I set the canister back down, upright, to answer a question from my wife. At that point I heard an odd sound which turned out to be the charcoal running out of the canister all over the ground. Apparently I'd shifted the old filter to the side just enough to create a hole.

So I cleaned that up, put the charcoal back into the canister (about a cup's worth), installed the new filter and all seems well.

My question: is it really the case that the filter is just held in place the way I describe? Or is mine perhaps missing some screws or some other retaining mechanism to make it all more secure? Seems like it would be easy for a branch or something to poke up just right and catch that filter, pushing it aside just enough to allow the charcoal to all fall out.

Here are the old and new filters:

http://jeep.smallcraft.net/projects/...s/IMG_0406.jpg

And here's the underside of the canister:

http://jeep.smallcraft.net/projects/...s/IMG_0407.jpg

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Unread 05-10-2010, 02:53 PM   #2
Mike Romain
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The newer ones have a screen to hold in the charcoal better, but otherwise that's the same as mine.
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86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
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Unread 05-10-2010, 04:37 PM   #3
JeffreyCharles
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Thanks Mike!
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Unread 05-10-2010, 09:28 PM   #4
Hybrid Jeep
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Wouldn't be a bad idea to pick yourself up some activated carbon at a pet store.. replace the 30 year old stuff with new!
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Unread 05-12-2010, 11:07 AM   #5
JeffreyCharles
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Good idea, I hadn't thought of that. Same stuff, huh?
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Unread 05-12-2010, 11:27 AM   #6
thord
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i replace the filter on mine, but did not see a way to get the old charcoal out. how do you do that to replace it?
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Unread 05-12-2010, 04:29 PM   #7
JeffreyCharles
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Though I haven't replaced my charcoal at this point it was very easy to remove the old charcoal once the filter was removed - simply turn the canister right-side up over a bucket and all the charcoal will simply fall out on its own. At least, that's the way it was with my canister.
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Unread 05-12-2010, 08:06 PM   #8
DUX4LIFE
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I cut the seam at the bottom and the bottom grate came off and the charcoal came out. I rinsed the charcoal and poured it back in. Then reused the filter element and glued the bottom back on. If your careful when you cut the seam it will go back together easily. I think there is a lip on the bottom.
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