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Southern Mn | This is on a 2002 Sterling AT9523 semi. I have developed a fairly major air leak here at the air “manifold”. Air is exhausting at what I assume is an exhaust port, kinda looks like a little trumpet end on it. So I assume my leak is in another component and this is where it’s exhausting.
I still leaks with the parking brakes on or off
Leaks with the service brake on or off
Leaks with the diff lock on or off
Leaks with the sliding 5th wheel locked or unlocked
Basically, I haven’t found any component that might be the culprit.
Any ideas how to track it down?
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 IMG_3315 (full).jpeg (126KB - 5 downloads)
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Finding air leak on truck
