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Old 03-14-2018, 10:01 PM   #1
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Year: 1999
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Missing door valve... HELP

i have a 1999 international amtran is3009. it is a 30' flat front, engine front 27-passenger bus with air brakes. the door opens and closes using the air system.

well the door is supposed to open and close using the air system.

i am missing the valve regulator/valve dump assembly. i was able to locate the parts i need...

international part number:
441126001 valve regulator $450
453442001 valve dump assy $360

my big concern right now is the cost. i'm already feeling the money crunch from the build and to ad an additional unexpected $800 right now is gonna kill me.

does anyone know of a good resource to search for used parts, or a good resource to search for bus junk yards to see if i can find that year bus somewhere. or is it just a matter of calling every junkyard in america to see if they happen to have this bus... ha
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Old 03-15-2018, 07:54 PM   #2
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I see a filter and regulator, you could get those cheaper somewhere else (like Harbor Freight). I don't know what the dump valve is, other then guessing it dumps air to the atmosphere. You could most likely buy it from a pneumatic supply house a heck of a lot cheaper.

I would get a regulator, set it to the door opener's operating pressure and play around with the door (when no children or pets are wandering around) and see how it works and figure out what the "dump" valve is and get one cheap.

...or just put in a manually operated door.
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Old 03-15-2018, 08:15 PM   #3
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Originally Posted by bus-bro View Post
I see a filter and regulator, you could get those cheaper somewhere else (like Harbor Freight). I don't know what the dump valve is, other then guessing it dumps air to the atmosphere. You could most likely buy it from a pneumatic supply house a heck of a lot cheaper.

I would get a regulator, set it to the door opener's operating pressure and play around with the door (when no children or pets are wandering around) and see how it works and figure out what the "dump" valve is and get one cheap.

...or just put in a manually operated door.
It's way more fun when children and pets ARE wandering around
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Old 03-15-2018, 09:02 PM   #4
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i have the dump valve off mine you can have ill take a pic of it tomorrow.
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Old 03-16-2018, 06:10 AM   #5
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i looked in there and the ball has a hole in the upper side to let the air out, neat! this what your looking for? pm me your address and I'll send it to ya
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Old 03-16-2018, 06:16 AM   #6
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oh no this wont work you have an electronic system and mine was manual. i have the door valve and cylinder if you want to change it over.
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Old 03-16-2018, 11:01 PM   #7
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tomorrow...

i'll take a few pics of what pieces i do have and how my door opens. if you compare that to yours hopefully we can see if it will work before mailing it out...
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Old 03-17-2018, 05:36 AM   #8
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if you cant find your electronic fix you could just go to a manual system. i have the valve witch sends air to either the front or back of the cylinder to push the door shut or pull it open. the dump valve goes in between. you could mount both next to the door or by the driver where mine was located.
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