Me and the hubby are company drivers. We don't own our truck but I like to try to learn things about the truck. So we pick up regular 53' trailers, dry bed. Nothing special. Most of the trailers are new-ish and don't give us too much of a problem. The last few trips we have gotten trailers that were obviously older. PTI all checked out fine. But as we drive the air pressure increases really high. Both needles pointing to 6 o'clock on the gauge. Our truck releases the excess air but it climbs right back up within a second or two. So we are releasing air pretty constantly. When we don't have the trailer attached its fine. When we have a newer trailer it's fine.
We are only going to have this trailer for another hour or so. What is it about the older trailers that might make this happen?? Oh, we have a 2012 cascadia.
Air pressure issues
Discussion in 'Freightliner Forum' started by STap, Sep 12, 2013.
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UR air gov. on air comp. is sticking, replace.
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Needles pointing to "6 o'clock" means nothing>what is the psi reading on the guage?
If this constant cycling is going on it may be an internal leak in a brake chamber on a trailer that you don't hear. Have you parked the truck/trailer in a quiet area with all of the brakes released and listened carefully for air movement? -
Sorry about that... The gauge reads about 175. The gauge numbers stop at 150. And no, haven't parked it in a real quite area. But that is definitely something for me to listen for. I'm still new at all this and I know the standard PTI doesn't necessarily cover EVERYTHING that can happen in the road.
Any input is greatly appreciated. -
stop driving IT the weakest air line willpop off U will B sitting on side of road. stop at any T,stop its a 2 simple fix, ck UR mant. desk
STap Thanks this. -
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Never mind. Truck is doing the same without trailer. Shop time for us. Booger!!
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Air compressor governor is shot
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