International Eagle 9400i - Problems to build up pressure

Is your current compressor getting clean air from the engine intake? Check the piping to make sure everything is connected properly and your compressor isn't sucking dirty air or the pipe is collapsed. How did the last components fail? Any signs of oil contamination in the system. What brand of parts are you buying? Who is the "aftermarket" maker of the dryer? Check all your lines between the governor and the tank and air dryer for any blockages.

 

http://www.bendixvrc.com/itemDisplay.asp?documentID=4498

See if this can help you. Make sure you have the lines to the governor hooked up correctly as well. I have seen drivers replace governors and hook the lines up wrong or put plugs where plugs don't belong.

 

I never heard of Automann, we've only ever used Bendix for those. Bad batch of parts maybe? Maybe try a Bendix one? Take the air lines off at the governor and the wet tank, blow out the line and see if there is any rust particles coming out or something else that is getting into the valve and buggering it up.

 

i agree bendix Governor new . rebuilt always caused me problems . price difference is not that much

 

HeavyD.... I have a 2006 9400i and have a similar problem except with mine air build up takes longer than usual ....once built up it maintains air and air during braking is normal but as soon as I stop and let it idle my secondary gauge losses 30 lbs or more within 15 seconds. I have replaced dryer and govenor twice but still have air blow back to govenor which sounds like a air leak but was told is air going back to govenor and out bleeder valve hole.My mechanic spent 7 hrs trying to isolate the proplem and called International who told him either it needs a check valve at one of the tanks or maybe a new compressor head which you would think if it was compressor both primary and secondary would both lose air. That said he clamped off the lines to the air tanks one at a time to see if it would make a difference and no luck so he doesnt think its a check valve. Do you have any ideas what it might be ??

 

The secondary system supplies air to your steer axle brakes and all your air related accessories including air suspension and transmission. If the air still leaks down with the parking brake applied, (buttons pulled out) then your maxi's are ok. If the air only leaks down with the engine running and you have a Cummins ISX then you have a leak in the turbo actuator solenoid, line to the turbo, or the actuator at the turbo itself. I think the engine fan also gets it's air supply from the secondary system. Try to dump your suspension and see if the leak stops, if it does you have an air bag or line leaking. Some leaks are hard to find, I have had some leaks that are so bad they make no noise at all! Hope this helps!