5.9 Crank Case vent filter?

[Jim Ross]

In the Geno's catalog, it lists a crank case vent filter "on top of the valve cover assembly".

Is this item located under or inside the valve cover?

How often does it need to be changed?

 

[JJPage]

Same question was asked on this forum just a short while back. If memory serves me... I believe you are able to clean the factory unit and re-use.



If you do a search you may be able to find it, cannot remember the posters, but I think maybe sag2, rbattelle, or maybe Joe Donnelly, not sure I spelled their names correct.

 

[Shadrach]

Your sig says '01. The 03 - 05 had a small breather under the plastic cover thats on top of the aluminum valve cover. Take off the 4 bolts holding the plastic part ( it has the "C" on it ) and then remove the hoses and two small bolts and pull it out of the valve cover. Lube the oring on the new one and push it in and reassemble. Shadrach

 

[macdaddy]

I'm doing mine tomorrow the little booger was $105. 00 at the dealer. Seems reasonable after six years and 91k miles.

Mac

 

[Jim Ross]

Shadrach,... . (that was my uncle's old CB handle),
I do have an '01, but I recently bought an '07 regular cab dually 4x4 5. 9.

 

[rbattelle]

I'm doing mine tomorrow the little booger was $105. 00 at the dealer. Seems reasonable after six years and 91k miles.

In my opinion, there is no need to ever replace this unless it's somehow damaged.



It's a simple vapor/oil separator, with no filter. It has internal baffles just like any other ordinary separator, and it's clear (to me) why Cummins never specified a replacement interval.



I've attached a photo where I tried to show inside the breather to show it's empty. It's upside down in the photo.



-Ryan

 

[macdaddy]

In my opinion, there is no need to ever replace this unless it's somehow damaged.



It's a simple vapor/oil separator, with no filter. It has internal baffles just like any other ordinary separator, and it's clear (to me) why Cummins never specified a replacement interval.



I've attached a photo where I tried to show inside the breather to show it's empty. It's upside down in the photo.



-Ryan

I think your right Ryan. However I've had it for awhile. . and don't think I kept the receipt. Thanks for the pic. Until now I was under the impression that it had some sort of filter element or mesh inside.



Mac

 

[rbattelle]

I think your right Ryan. However I've had it for awhile. . and don't think I kept the receipt.

Mac, I'd do one of two things. Either keep the new one as a replacement "just in case", or put the new one on but clean and retain the old one "just in case".



You never know, someone here might damage theirs and buy a replacement from you at half cost or something.



Whatever you do, don't throw the old one away!



-Ryan

 

[Jim Ross]

Thanks Guys!
BTW, where does the vent hose go to on the '07? On the '01 it goes into a little "pill bottle" on the front of the engine.

 

[Shadrach]

The 06 and up is a totally different filter, much bigger and does need to be replaced from time to time. The hose goes to the air intake pipe just before the turbo. Shadrach

 

[TRAMPLINEMAN]

We have a couple '09 2500s at work that run 16 hours a day thru all types of conditions. Earlier this year, we were called out to North Dakota for storm work. While there, two of the trucks went down. The trucks would only go 10 miles an hour with no power what so ever. On both trucks, the crank case filter was the culprit. Both trucks had approx. 80K miles. Our mechanic tried to clean and reuse the stock filters with no luck. Replacements were installed, codes cleared and trucks were back to normal.

 

[Joseph Donnelly]

See TDR Issue 60, p. 92 for a discussion on the crankcase filter in the valve cover (under the plastic cover) for 2003-2005 Turbo Diesels.

 

[rscurtis]

I'm with rbatelle on this, no need to replace it. It is simply a liquid separator to return oil to the CC, not send it out the breather tube. The '07. 5+ however, is another animal, it it considered a filter with a maintenance schedule.

 

[Jim Ross]

Thanks Guys.
and Joe, I'm the guy who bought the 275's from you at Sam's Town a few years back, they're still working fine after 100K in my '01.
Jim

 

[firemedic2524p]

See TDR Issue 60, p. 92 for a discussion on the crankcase filter in the valve cover (under the plastic cover) for 2003-2005 Turbo Diesels.

Hi all!!

Brand new to this forum. I’m having an issue with the CCV Filter and would like to read the issue mentioned above by Donnelly.

Where can this issue be found?

Thanks in advance!!!!

 

[Prairie Dog]

I replaced the oil separator (it's NOT a filter, just an oil/vapor separator) a couple of years ago because it had a leak around the seam since new. Dealer could never figure it out but I finally did.
After removing it, I took it apart. There's nothing to it. It could have gone many more hundreds of thousands of miles and then been transferred to another truck. There's just nothing to wear out of fill up. (had pics but Photo Bucket lost em).
No way I would ever replace one of these unless it's leaking oil all over.

 

[Diesel life]

Any one know the size of the o ring it needs

 

[Prairie Dog]

I had a leak from new at the CCV . I finally replaced it and did an autopsy on the old one.
Guys, there's nothing to them. It's an empty box with a bit of sctoch-bright type materail on the top and a devider between two chambers. The top and bottom are glued together (that's where mine leaked). There's the two sides of the housing, sctoch brite and an o-ring.
You could take one off a worn out truck and use it on another one. There's no collection of anything in it either, it's just an air/oil seperator.
They will never wear out.

 

[seafish]

^^^
All that said, the o-ring does in fact flatten out and leak after years and it is easily replaced.
Unfortunately I do NOT know the size...you will need to remove the PCV after removing the screw and then use with a large pry bar or screwdriver with a surprising amount of force to pry off the CCV and then remove the o ring in order to find the right size to replace it.