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Old 08-19-2017, 03:35 PM   #1
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2004 IC T444E Air Actuated Louver?

OK I was innocently looking for a place to mount a 19" electric fan to push air through my cooling system. Ive seen a set of louvers on the front of the radiator stack. I always thought they were redirecting or rather straightening the airflow before entry. Today since I was looking close at mounting this fan at that location, I noticed the air line and piston actuator mounted to the side of this louver assy. This thing opens and closes fully.
Anyone know anything about this system and how it works? I get that it's a cold weather air dam but how is it told to open and close under what conditions? This thing can be replaced by a vinyl manual air dam if need be and that fan will drop right in its place. Im much more concerned about the heat margins on these engines especially towing as I am- than I am about cold weather operation.


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Old 08-19-2017, 03:49 PM   #2
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Anyone know anything about this system and how it works? I get that it's a cold weather air dam but how is it told to open and close under what conditions? This thing can be replaced by a vinyl manual air dam if need be and that fan will drop right in its place. Im much more concerned about the heat margins on these engines especially towing as I am- than I am about cold weather operation.


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That closes in cold weather until coolant warms-up. It's air-actuated, usually. Shutterstat.

Is your fan clutch operating properly? Are the shrouds intact? Good coolant? or just preemptive-strike?
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Old 08-19-2017, 04:36 PM   #3
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Preemptive strike. Anyone who's driven through the Mohave in summer has seen the results of the poor cooling margins some of these turbo diesels have in those conditions - Burned hulks of RV's or carbon burn spots where one burned. So I figure a $200 fan and a couple of 20# ABC fire extinguishers can go a long way toward helping avoid that.
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Old 08-19-2017, 05:00 PM   #4
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yep I have those air shutters on my carpenter bus.. and they *WORK* if you happen to be travelling in wicked cold weather.. they keep your heater nice and warm inside.

id be surprised if your 444E overheats since you have a 2000 series trans.. or perhaps you have really short rear gears?

I was recently out with mine in near 100 degree and humoid sunny weather with the A/C Blasting and the warmest I saw was a quick 210 when I was on a long 6% grade.. but quickly dropped back to 202 after that...

making sure your belt fan clutch is good goes a long way... and navistar likes them to come on LATE.. so you can re-clock it.. or if you have an electric clutch, re-program the computer to turn it on earlier than the 214 they want it to activate...

if you dont plan on running the bus in wicked cold weather you can remove the air shutters..

also i'll say that my 444E is a texas bus and doesnt have those shutters.. I had it out in 0f ohio winter weather and my temp still reached operating. and my heaters were warm even driving around in town. (and i like it warm enough in the bus to wear a short sleeve shirt).. so my guess is removing them wont hurt a thing.

not sure how much an electric fan will help.. probably some if you locate it on the radiator half only.. (or do you not have the split radiator?
-Christopher
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Old 08-19-2017, 05:19 PM   #5
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It would be nice if those were available aftermarket for our daily drivers. Sometimes, a winter front isn't available or they're a PITA to attach.
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Old 08-19-2017, 05:32 PM   #6
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sounds like he is going to have a set available. those were installed on northern bus fleets fairly often. in ohio here they were a Pretty common item on the older busses.. im guessing they still put them on the new ones.. though I havent seen them. at least not in central ohio.. but it may be the newer busses run hotter on their own because of emissions standards.. most engines burn cleaner when they are running warmer.

they are a permanantly installed item and not a portable device like the front bra is thats used on some busses in cold winter.
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Old 08-19-2017, 06:35 PM   #7
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sounds like he is going to have a set available. those were installed on northern bus fleets fairly often. in ohio here they were a Pretty common item on the older busses.. im guessing they still put them on the new ones.. though I havent seen them. at least not in central ohio.. but it may be the newer busses run hotter on their own because of emissions standards.. most engines burn cleaner when they are running warmer.

they are a permanantly installed item and not a portable device like the front bra is thats used on some busses in cold winter.
-Christopher


Thanks guys ... Im still gathering information but Ill be sure to update if I decide to nix or move the louvers. As far as a bra goes, as I am a person who prefers function way before form, Im going to make a custom bra from that heavy school bus seat vinyl I have laying around!

One more ? I seem to have a spin on fuel filter and I cant find any mention of one in the service manuals or even NAPA. Whats the skinny with the red filter?


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Old 08-19-2017, 06:53 PM   #8
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that looks like a fuel / water separator.. im assuming it has a drain valve on the bottom?
the wire could be for a fuel pre-heater, or a water-in-fuel light..

-Christopher
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Old 08-19-2017, 07:53 PM   #9
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that looks like a fuel / water separator.. im assuming it has a drain valve on the bottom?
the wire could be for a fuel pre-heater, or a water-in-fuel light..

-Christopher


I do have one of those lights ... I just mapped them the other day and there's quite a few of them ... they don't just give you a WARN light on these busses. Is this separator a service item? Or is it like the fuel strainer - clean and replace. The fuel strainer also pulls water off incoming fuel yes?


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Old 08-19-2017, 08:01 PM   #10
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on my DT360 the water / fuel separator is also a filter for larger particles.. so I change it when I change my fuel filter... its a spin-on and readily available..

I think on my bus its 13 Micron and the normal fuel filter is 10. or something like that.

every so often I crack the valve and let a couple ounces of fuel drain on the ground.. its probably supposed to be periodic.. but I just do it when the mood strikes. every few weeks or so.... usually on a mnorning check when everything is cold.
-Christopher
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